/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 21:24:09,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 21:24:09,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 21:24:09,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 21:24:09,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-05-21 21:24:09,523 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 21:24:09,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 21:24:09,524 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 21:24:09,524 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 21:24:09,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 21:24:09,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 21:24:09,526 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 21:24:09,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 21:24:09,526 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 21:24:09,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 21:24:09,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 21:24:09,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 21:24:09,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 21:24:09,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 21:24:09,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 21:24:09,527 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 21:24:09,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 21:24:09,527 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 21:24:09,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 21:24:09,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 21:24:09,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 21:24:09,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 21:24:09,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 21:24:09,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 21:24:09,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 21:24:09,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 21:24:09,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 21:24:09,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 21:24:09,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 21:24:09,528 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 21:24:09,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 21:24:09,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 21:24:09,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 21:24:09,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 21:24:09,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 21:24:09,765 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-21 21:24:09,766 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-21 21:24:09,767 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl [2021-05-21 21:24:09,767 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl' [2021-05-21 21:24:09,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 21:24:09,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-21 21:24:09,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 21:24:09,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 21:24:09,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 21:24:09,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:24:09" (1/1) ... [2021-05-21 21:24:09,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:24:09" (1/1) ... [2021-05-21 21:24:09,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 21:24:09,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 21:24:09,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 21:24:09,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 21:24:09,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:24:09" (1/1) ... [2021-05-21 21:24:09,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:24:09" (1/1) ... [2021-05-21 21:24:09,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:24:09" (1/1) ... [2021-05-21 21:24:09,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:24:09" (1/1) ... [2021-05-21 21:24:09,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:24:09" (1/1) ... [2021-05-21 21:24:09,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:24:09" (1/1) ... [2021-05-21 21:24:09,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:24:09" (1/1) ... [2021-05-21 21:24:09,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 21:24:09,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 21:24:09,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 21:24:09,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 21:24:09,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:24:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 21:24:09,893 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-05-21 21:24:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-05-21 21:24:09,894 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-05-21 21:24:09,894 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-05-21 21:24:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-05-21 21:24:09,894 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-05-21 21:24:09,894 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-21 21:24:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 21:24:09,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 21:24:09,894 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-05-21 21:24:09,894 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-05-21 21:24:09,895 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-05-21 21:24:09,895 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-05-21 21:24:09,895 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-05-21 21:24:09,895 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-05-21 21:24:09,895 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 21:24:10,043 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 21:24:10,044 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-21 21:24:10,045 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 09:24:10 BoogieIcfgContainer [2021-05-21 21:24:10,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 21:24:10,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 21:24:10,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 21:24:10,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 21:24:10,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.05 09:24:09" (1/2) ... [2021-05-21 21:24:10,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b81b8f5 and model type easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 09:24:10, skipping insertion in model container [2021-05-21 21:24:10,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 09:24:10" (2/2) ... [2021-05-21 21:24:10,049 INFO L111 eAbstractionObserver]: Analyzing ICFG easy10.wvr.bpl [2021-05-21 21:24:10,053 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 21:24:10,053 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 21:24:10,053 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 21:24:10,053 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 21:24:10,130 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-05-21 21:24:10,149 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-05-21 21:24:10,177 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 21:24:10,177 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 21:24:10,177 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 21:24:10,177 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 21:24:10,178 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 21:24:10,178 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 21:24:10,178 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 21:24:10,178 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 21:24:10,184 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 45 transitions, 122 flow [2021-05-21 21:24:10,486 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5271 states, 5269 states have (on average 3.4991459479977225) internal successors, (18437), 5270 states have internal predecessors, (18437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:10,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 5271 states, 5269 states have (on average 3.4991459479977225) internal successors, (18437), 5270 states have internal predecessors, (18437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:10,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:10,535 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:10,536 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:10,536 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:10,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:10,543 INFO L82 PathProgramCache]: Analyzing trace with hash -127225446, now seen corresponding path program 1 times [2021-05-21 21:24:10,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:10,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028210845] [2021-05-21 21:24:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:10,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:10,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028210845] [2021-05-21 21:24:10,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028210845] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:10,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:10,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-21 21:24:10,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983424978] [2021-05-21 21:24:10,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 21:24:10,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:10,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 21:24:10,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 21:24:10,719 INFO L87 Difference]: Start difference. First operand has 5271 states, 5269 states have (on average 3.4991459479977225) internal successors, (18437), 5270 states have internal predecessors, (18437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:10,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:10,785 INFO L93 Difference]: Finished difference Result 4197 states and 14419 transitions. [2021-05-21 21:24:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 21:24:10,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:10,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:10,826 INFO L225 Difference]: With dead ends: 4197 [2021-05-21 21:24:10,826 INFO L226 Difference]: Without dead ends: 4197 [2021-05-21 21:24:10,827 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 21:24:10,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4197 states. [2021-05-21 21:24:11,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4197 to 4197. [2021-05-21 21:24:11,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4197 states, 4196 states have (on average 3.436367969494757) internal successors, (14419), 4196 states have internal predecessors, (14419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 14419 transitions. [2021-05-21 21:24:11,043 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 14419 transitions. Word has length 39 [2021-05-21 21:24:11,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:11,043 INFO L482 AbstractCegarLoop]: Abstraction has 4197 states and 14419 transitions. [2021-05-21 21:24:11,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:11,044 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 14419 transitions. [2021-05-21 21:24:11,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:11,053 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:11,053 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:11,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 21:24:11,054 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:11,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:11,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1294182084, now seen corresponding path program 2 times [2021-05-21 21:24:11,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:11,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141207819] [2021-05-21 21:24:11,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:11,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:11,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141207819] [2021-05-21 21:24:11,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141207819] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:11,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:11,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-21 21:24:11,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523290361] [2021-05-21 21:24:11,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-21 21:24:11,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:11,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-21 21:24:11,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 21:24:11,081 INFO L87 Difference]: Start difference. First operand 4197 states and 14419 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:11,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:11,112 INFO L93 Difference]: Finished difference Result 3290 states and 11077 transitions. [2021-05-21 21:24:11,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-21 21:24:11,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:11,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:11,128 INFO L225 Difference]: With dead ends: 3290 [2021-05-21 21:24:11,128 INFO L226 Difference]: Without dead ends: 3290 [2021-05-21 21:24:11,130 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-21 21:24:11,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2021-05-21 21:24:11,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 3290. [2021-05-21 21:24:11,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 3289 states have (on average 3.367892976588629) internal successors, (11077), 3289 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:11,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 11077 transitions. [2021-05-21 21:24:11,229 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 11077 transitions. Word has length 39 [2021-05-21 21:24:11,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:11,229 INFO L482 AbstractCegarLoop]: Abstraction has 3290 states and 11077 transitions. [2021-05-21 21:24:11,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:11,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 11077 transitions. [2021-05-21 21:24:11,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:11,276 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:11,276 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:11,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 21:24:11,276 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:11,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:11,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1879996152, now seen corresponding path program 3 times [2021-05-21 21:24:11,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:11,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357676753] [2021-05-21 21:24:11,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:11,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:11,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357676753] [2021-05-21 21:24:11,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357676753] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:11,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:11,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:11,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996564154] [2021-05-21 21:24:11,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:11,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:11,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:11,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:11,696 INFO L87 Difference]: Start difference. First operand 3290 states and 11077 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:12,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:12,795 INFO L93 Difference]: Finished difference Result 3861 states and 12851 transitions. [2021-05-21 21:24:12,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-21 21:24:12,796 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:12,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:12,811 INFO L225 Difference]: With dead ends: 3861 [2021-05-21 21:24:12,812 INFO L226 Difference]: Without dead ends: 3794 [2021-05-21 21:24:12,812 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 708.3ms TimeCoverageRelationStatistics Valid=179, Invalid=1543, Unknown=0, NotChecked=0, Total=1722 [2021-05-21 21:24:12,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2021-05-21 21:24:12,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 3406. [2021-05-21 21:24:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3405 states have (on average 3.3612334801762116) internal successors, (11445), 3405 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:12,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 11445 transitions. [2021-05-21 21:24:12,889 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 11445 transitions. Word has length 39 [2021-05-21 21:24:12,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:12,889 INFO L482 AbstractCegarLoop]: Abstraction has 3406 states and 11445 transitions. [2021-05-21 21:24:12,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:12,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 11445 transitions. [2021-05-21 21:24:12,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:12,895 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:12,895 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:12,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 21:24:12,895 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:12,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:12,896 INFO L82 PathProgramCache]: Analyzing trace with hash 160380182, now seen corresponding path program 4 times [2021-05-21 21:24:12,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:12,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478671636] [2021-05-21 21:24:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:13,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:13,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478671636] [2021-05-21 21:24:13,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478671636] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:13,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:13,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:13,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965637273] [2021-05-21 21:24:13,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:13,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:13,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:13,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:13,148 INFO L87 Difference]: Start difference. First operand 3406 states and 11445 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:14,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:14,515 INFO L93 Difference]: Finished difference Result 3950 states and 13052 transitions. [2021-05-21 21:24:14,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 21:24:14,515 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:14,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:14,532 INFO L225 Difference]: With dead ends: 3950 [2021-05-21 21:24:14,533 INFO L226 Difference]: Without dead ends: 3907 [2021-05-21 21:24:14,533 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 841.5ms TimeCoverageRelationStatistics Valid=249, Invalid=2301, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:24:14,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3907 states. [2021-05-21 21:24:14,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 3412. [2021-05-21 21:24:14,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3411 states have (on average 3.359132219290531) internal successors, (11458), 3411 states have internal predecessors, (11458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 11458 transitions. [2021-05-21 21:24:14,621 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 11458 transitions. Word has length 39 [2021-05-21 21:24:14,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:14,622 INFO L482 AbstractCegarLoop]: Abstraction has 3412 states and 11458 transitions. [2021-05-21 21:24:14,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:14,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 11458 transitions. [2021-05-21 21:24:14,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:14,628 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:14,628 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:14,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 21:24:14,629 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:14,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:14,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1620218120, now seen corresponding path program 5 times [2021-05-21 21:24:14,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:14,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321914049] [2021-05-21 21:24:14,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:14,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:14,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321914049] [2021-05-21 21:24:14,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321914049] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:14,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:14,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:14,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390798958] [2021-05-21 21:24:14,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:14,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:14,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:14,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:14,917 INFO L87 Difference]: Start difference. First operand 3412 states and 11458 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:16,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:16,282 INFO L93 Difference]: Finished difference Result 3905 states and 12948 transitions. [2021-05-21 21:24:16,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-21 21:24:16,282 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:16,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:16,293 INFO L225 Difference]: With dead ends: 3905 [2021-05-21 21:24:16,293 INFO L226 Difference]: Without dead ends: 3841 [2021-05-21 21:24:16,294 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 824.7ms TimeCoverageRelationStatistics Valid=240, Invalid=2210, Unknown=0, NotChecked=0, Total=2450 [2021-05-21 21:24:16,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2021-05-21 21:24:16,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3394. [2021-05-21 21:24:16,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.3642793987621573) internal successors, (11415), 3393 states have internal predecessors, (11415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:16,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11415 transitions. [2021-05-21 21:24:16,374 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11415 transitions. Word has length 39 [2021-05-21 21:24:16,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:16,375 INFO L482 AbstractCegarLoop]: Abstraction has 3394 states and 11415 transitions. [2021-05-21 21:24:16,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:16,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11415 transitions. [2021-05-21 21:24:16,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:16,381 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:16,381 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:16,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 21:24:16,381 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:16,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:16,382 INFO L82 PathProgramCache]: Analyzing trace with hash -999783720, now seen corresponding path program 6 times [2021-05-21 21:24:16,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:16,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985147296] [2021-05-21 21:24:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:16,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:16,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:16,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985147296] [2021-05-21 21:24:16,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985147296] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:16,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:16,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:16,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341674857] [2021-05-21 21:24:16,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:16,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:16,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:16,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:16,609 INFO L87 Difference]: Start difference. First operand 3394 states and 11415 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:17,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:17,550 INFO L93 Difference]: Finished difference Result 3861 states and 12845 transitions. [2021-05-21 21:24:17,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-21 21:24:17,550 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:17,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:17,560 INFO L225 Difference]: With dead ends: 3861 [2021-05-21 21:24:17,560 INFO L226 Difference]: Without dead ends: 3794 [2021-05-21 21:24:17,561 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 513.2ms TimeCoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2021-05-21 21:24:17,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2021-05-21 21:24:17,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 3402. [2021-05-21 21:24:17,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3401 states have (on average 3.3610702734489855) internal successors, (11431), 3401 states have internal predecessors, (11431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:17,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 11431 transitions. [2021-05-21 21:24:17,647 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 11431 transitions. Word has length 39 [2021-05-21 21:24:17,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:17,648 INFO L482 AbstractCegarLoop]: Abstraction has 3402 states and 11431 transitions. [2021-05-21 21:24:17,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:17,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 11431 transitions. [2021-05-21 21:24:17,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:17,657 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:17,658 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:17,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 21:24:17,658 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:17,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:17,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1130378568, now seen corresponding path program 7 times [2021-05-21 21:24:17,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:17,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367221791] [2021-05-21 21:24:17,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:17,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:17,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367221791] [2021-05-21 21:24:17,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367221791] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:17,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:17,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:17,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066491734] [2021-05-21 21:24:17,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:17,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:17,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:17,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:17,868 INFO L87 Difference]: Start difference. First operand 3402 states and 11431 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:18,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:18,780 INFO L93 Difference]: Finished difference Result 3849 states and 12805 transitions. [2021-05-21 21:24:18,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 21:24:18,781 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:18,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:18,790 INFO L225 Difference]: With dead ends: 3849 [2021-05-21 21:24:18,790 INFO L226 Difference]: Without dead ends: 3786 [2021-05-21 21:24:18,791 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 543.3ms TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2021-05-21 21:24:18,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-05-21 21:24:18,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3394. [2021-05-21 21:24:18,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.3631005010315356) internal successors, (11411), 3393 states have internal predecessors, (11411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:18,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11411 transitions. [2021-05-21 21:24:18,864 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11411 transitions. Word has length 39 [2021-05-21 21:24:18,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:18,864 INFO L482 AbstractCegarLoop]: Abstraction has 3394 states and 11411 transitions. [2021-05-21 21:24:18,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:18,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11411 transitions. [2021-05-21 21:24:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:18,870 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:18,870 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:18,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 21:24:18,870 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:18,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:18,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1266057160, now seen corresponding path program 8 times [2021-05-21 21:24:18,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:18,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303843532] [2021-05-21 21:24:18,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:19,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:19,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303843532] [2021-05-21 21:24:19,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303843532] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:19,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:19,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:19,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630054253] [2021-05-21 21:24:19,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:19,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:19,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:19,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:19,071 INFO L87 Difference]: Start difference. First operand 3394 states and 11411 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:20,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:20,322 INFO L93 Difference]: Finished difference Result 4016 states and 13206 transitions. [2021-05-21 21:24:20,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:24:20,323 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:20,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:20,332 INFO L225 Difference]: With dead ends: 4016 [2021-05-21 21:24:20,332 INFO L226 Difference]: Without dead ends: 3973 [2021-05-21 21:24:20,333 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 792.6ms TimeCoverageRelationStatistics Valid=268, Invalid=2488, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 21:24:20,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3973 states. [2021-05-21 21:24:20,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3973 to 3402. [2021-05-21 21:24:20,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3401 states have (on average 3.3610702734489855) internal successors, (11431), 3401 states have internal predecessors, (11431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:20,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 11431 transitions. [2021-05-21 21:24:20,407 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 11431 transitions. Word has length 39 [2021-05-21 21:24:20,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:20,407 INFO L482 AbstractCegarLoop]: Abstraction has 3402 states and 11431 transitions. [2021-05-21 21:24:20,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:20,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 11431 transitions. [2021-05-21 21:24:20,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:20,414 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:20,414 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:20,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-21 21:24:20,414 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:20,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:20,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1248311834, now seen corresponding path program 9 times [2021-05-21 21:24:20,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:20,415 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187513109] [2021-05-21 21:24:20,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:20,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:20,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187513109] [2021-05-21 21:24:20,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187513109] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:20,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:20,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:20,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729178403] [2021-05-21 21:24:20,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:20,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:20,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:20,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:20,627 INFO L87 Difference]: Start difference. First operand 3402 states and 11431 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:21,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:21,870 INFO L93 Difference]: Finished difference Result 4004 states and 13168 transitions. [2021-05-21 21:24:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:24:21,870 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:21,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:21,878 INFO L225 Difference]: With dead ends: 4004 [2021-05-21 21:24:21,878 INFO L226 Difference]: Without dead ends: 3952 [2021-05-21 21:24:21,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 780.3ms TimeCoverageRelationStatistics Valid=260, Invalid=2392, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:24:21,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2021-05-21 21:24:21,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3396. [2021-05-21 21:24:21,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 3.3625920471281296) internal successors, (11416), 3395 states have internal predecessors, (11416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:21,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 11416 transitions. [2021-05-21 21:24:21,943 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 11416 transitions. Word has length 39 [2021-05-21 21:24:21,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:21,943 INFO L482 AbstractCegarLoop]: Abstraction has 3396 states and 11416 transitions. [2021-05-21 21:24:21,943 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:21,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 11416 transitions. [2021-05-21 21:24:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:21,949 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:21,949 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:21,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-21 21:24:21,949 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:21,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:21,950 INFO L82 PathProgramCache]: Analyzing trace with hash -347573590, now seen corresponding path program 10 times [2021-05-21 21:24:21,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:21,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290599852] [2021-05-21 21:24:21,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:22,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:22,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:22,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290599852] [2021-05-21 21:24:22,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290599852] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:22,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:22,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:22,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214092975] [2021-05-21 21:24:22,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:22,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:22,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:22,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:22,128 INFO L87 Difference]: Start difference. First operand 3396 states and 11416 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:23,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:23,082 INFO L93 Difference]: Finished difference Result 3977 states and 13079 transitions. [2021-05-21 21:24:23,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 21:24:23,082 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:23,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:23,089 INFO L225 Difference]: With dead ends: 3977 [2021-05-21 21:24:23,089 INFO L226 Difference]: Without dead ends: 3922 [2021-05-21 21:24:23,090 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 603.8ms TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:24:23,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2021-05-21 21:24:23,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3396. [2021-05-21 21:24:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 3.3620029455081) internal successors, (11414), 3395 states have internal predecessors, (11414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:23,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 11414 transitions. [2021-05-21 21:24:23,149 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 11414 transitions. Word has length 39 [2021-05-21 21:24:23,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:23,149 INFO L482 AbstractCegarLoop]: Abstraction has 3396 states and 11414 transitions. [2021-05-21 21:24:23,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:23,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 11414 transitions. [2021-05-21 21:24:23,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:23,154 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:23,154 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:23,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-21 21:24:23,155 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:23,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:23,155 INFO L82 PathProgramCache]: Analyzing trace with hash 825078632, now seen corresponding path program 11 times [2021-05-21 21:24:23,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:23,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908040228] [2021-05-21 21:24:23,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:23,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:23,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908040228] [2021-05-21 21:24:23,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908040228] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:23,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:23,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:23,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109246724] [2021-05-21 21:24:23,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:23,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:23,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:23,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:23,342 INFO L87 Difference]: Start difference. First operand 3396 states and 11414 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:24,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:24,224 INFO L93 Difference]: Finished difference Result 3912 states and 12927 transitions. [2021-05-21 21:24:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 21:24:24,225 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:24,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:24,231 INFO L225 Difference]: With dead ends: 3912 [2021-05-21 21:24:24,231 INFO L226 Difference]: Without dead ends: 3866 [2021-05-21 21:24:24,232 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 532.9ms TimeCoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2021-05-21 21:24:24,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2021-05-21 21:24:24,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3400. [2021-05-21 21:24:24,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3400 states, 3399 states have (on average 3.360400117681671) internal successors, (11422), 3399 states have internal predecessors, (11422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:24,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 11422 transitions. [2021-05-21 21:24:24,296 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 11422 transitions. Word has length 39 [2021-05-21 21:24:24,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:24,296 INFO L482 AbstractCegarLoop]: Abstraction has 3400 states and 11422 transitions. [2021-05-21 21:24:24,296 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:24,296 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 11422 transitions. [2021-05-21 21:24:24,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:24,302 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:24,302 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:24,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-21 21:24:24,302 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:24,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:24,302 INFO L82 PathProgramCache]: Analyzing trace with hash 577612470, now seen corresponding path program 12 times [2021-05-21 21:24:24,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:24,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097514957] [2021-05-21 21:24:24,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:24,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:24,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097514957] [2021-05-21 21:24:24,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097514957] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:24,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:24,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:24,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96041253] [2021-05-21 21:24:24,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:24,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:24,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:24,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:24,480 INFO L87 Difference]: Start difference. First operand 3400 states and 11422 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:25,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:25,649 INFO L93 Difference]: Finished difference Result 3963 states and 13072 transitions. [2021-05-21 21:24:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:24:25,649 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:25,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:25,656 INFO L225 Difference]: With dead ends: 3963 [2021-05-21 21:24:25,656 INFO L226 Difference]: Without dead ends: 3899 [2021-05-21 21:24:25,657 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 749.3ms TimeCoverageRelationStatistics Valid=242, Invalid=2208, Unknown=0, NotChecked=0, Total=2450 [2021-05-21 21:24:25,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3899 states. [2021-05-21 21:24:25,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3899 to 3450. [2021-05-21 21:24:25,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3450 states, 3449 states have (on average 3.358944621629458) internal successors, (11585), 3449 states have internal predecessors, (11585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:25,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 11585 transitions. [2021-05-21 21:24:25,721 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 11585 transitions. Word has length 39 [2021-05-21 21:24:25,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:25,721 INFO L482 AbstractCegarLoop]: Abstraction has 3450 states and 11585 transitions. [2021-05-21 21:24:25,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:25,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 11585 transitions. [2021-05-21 21:24:25,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:25,727 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:25,727 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:25,727 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-21 21:24:25,727 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:25,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:25,728 INFO L82 PathProgramCache]: Analyzing trace with hash 2116487992, now seen corresponding path program 13 times [2021-05-21 21:24:25,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:25,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648021426] [2021-05-21 21:24:25,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:25,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:25,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648021426] [2021-05-21 21:24:25,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648021426] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:25,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:25,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:25,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941492035] [2021-05-21 21:24:25,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:25,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:25,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:25,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:25,907 INFO L87 Difference]: Start difference. First operand 3450 states and 11585 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:26,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:26,708 INFO L93 Difference]: Finished difference Result 3857 states and 12851 transitions. [2021-05-21 21:24:26,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 21:24:26,709 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:26,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:26,715 INFO L225 Difference]: With dead ends: 3857 [2021-05-21 21:24:26,715 INFO L226 Difference]: Without dead ends: 3790 [2021-05-21 21:24:26,715 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 434.3ms TimeCoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2021-05-21 21:24:26,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2021-05-21 21:24:26,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3490. [2021-05-21 21:24:26,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 3489 states have (on average 3.351390083118372) internal successors, (11693), 3489 states have internal predecessors, (11693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:26,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 11693 transitions. [2021-05-21 21:24:26,783 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 11693 transitions. Word has length 39 [2021-05-21 21:24:26,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:26,783 INFO L482 AbstractCegarLoop]: Abstraction has 3490 states and 11693 transitions. [2021-05-21 21:24:26,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:26,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 11693 transitions. [2021-05-21 21:24:26,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:26,788 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:26,788 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:26,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-21 21:24:26,789 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:26,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:26,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1985893144, now seen corresponding path program 14 times [2021-05-21 21:24:26,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:26,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211734965] [2021-05-21 21:24:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:26,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:26,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211734965] [2021-05-21 21:24:26,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211734965] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:26,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:26,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:26,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039755098] [2021-05-21 21:24:26,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:26,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:26,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:26,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:26,957 INFO L87 Difference]: Start difference. First operand 3490 states and 11693 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:27,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:27,767 INFO L93 Difference]: Finished difference Result 3845 states and 12811 transitions. [2021-05-21 21:24:27,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-21 21:24:27,768 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:27,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:27,774 INFO L225 Difference]: With dead ends: 3845 [2021-05-21 21:24:27,774 INFO L226 Difference]: Without dead ends: 3782 [2021-05-21 21:24:27,774 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 460.9ms TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2021-05-21 21:24:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2021-05-21 21:24:27,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 3482. [2021-05-21 21:24:27,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 3481 states have (on average 3.3521976443550705) internal successors, (11669), 3481 states have internal predecessors, (11669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:27,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 11669 transitions. [2021-05-21 21:24:27,830 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 11669 transitions. Word has length 39 [2021-05-21 21:24:27,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:27,830 INFO L482 AbstractCegarLoop]: Abstraction has 3482 states and 11669 transitions. [2021-05-21 21:24:27,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:27,830 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 11669 transitions. [2021-05-21 21:24:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:27,835 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:27,835 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:27,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-21 21:24:27,835 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:27,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:27,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1455992696, now seen corresponding path program 15 times [2021-05-21 21:24:27,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:27,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28562348] [2021-05-21 21:24:27,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:27,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:27,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:27,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28562348] [2021-05-21 21:24:27,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28562348] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:27,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:27,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:27,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063862109] [2021-05-21 21:24:27,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:27,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:27,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:27,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:27,997 INFO L87 Difference]: Start difference. First operand 3482 states and 11669 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:28,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:28,864 INFO L93 Difference]: Finished difference Result 3869 states and 12871 transitions. [2021-05-21 21:24:28,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-21 21:24:28,864 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:28,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:28,870 INFO L225 Difference]: With dead ends: 3869 [2021-05-21 21:24:28,870 INFO L226 Difference]: Without dead ends: 3746 [2021-05-21 21:24:28,871 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 473.8ms TimeCoverageRelationStatistics Valid=159, Invalid=1401, Unknown=0, NotChecked=0, Total=1560 [2021-05-21 21:24:28,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2021-05-21 21:24:28,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 3450. [2021-05-21 21:24:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3450 states, 3449 states have (on average 3.3543055958248766) internal successors, (11569), 3449 states have internal predecessors, (11569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:28,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 11569 transitions. [2021-05-21 21:24:28,928 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 11569 transitions. Word has length 39 [2021-05-21 21:24:28,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:28,928 INFO L482 AbstractCegarLoop]: Abstraction has 3450 states and 11569 transitions. [2021-05-21 21:24:28,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:28,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 11569 transitions. [2021-05-21 21:24:28,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:28,933 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:28,933 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:28,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-21 21:24:28,934 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:28,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:28,934 INFO L82 PathProgramCache]: Analyzing trace with hash 737581526, now seen corresponding path program 16 times [2021-05-21 21:24:28,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:28,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439943608] [2021-05-21 21:24:28,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:29,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:29,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:29,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439943608] [2021-05-21 21:24:29,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439943608] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:29,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:29,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:29,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821371006] [2021-05-21 21:24:29,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:29,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:29,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:29,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:29,090 INFO L87 Difference]: Start difference. First operand 3450 states and 11569 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:30,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:30,642 INFO L93 Difference]: Finished difference Result 5674 states and 19244 transitions. [2021-05-21 21:24:30,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-21 21:24:30,643 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:30,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:30,652 INFO L225 Difference]: With dead ends: 5674 [2021-05-21 21:24:30,652 INFO L226 Difference]: Without dead ends: 5631 [2021-05-21 21:24:30,653 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 837.1ms TimeCoverageRelationStatistics Valid=309, Invalid=3113, Unknown=0, NotChecked=0, Total=3422 [2021-05-21 21:24:30,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2021-05-21 21:24:30,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 3544. [2021-05-21 21:24:30,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3544 states, 3543 states have (on average 3.3519616144510302) internal successors, (11876), 3543 states have internal predecessors, (11876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:30,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 11876 transitions. [2021-05-21 21:24:30,732 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 11876 transitions. Word has length 39 [2021-05-21 21:24:30,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:30,733 INFO L482 AbstractCegarLoop]: Abstraction has 3544 states and 11876 transitions. [2021-05-21 21:24:30,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:30,733 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 11876 transitions. [2021-05-21 21:24:30,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:30,738 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:30,738 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:30,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-21 21:24:30,739 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:30,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:30,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1043016776, now seen corresponding path program 17 times [2021-05-21 21:24:30,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:30,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323501242] [2021-05-21 21:24:30,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:30,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:30,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:30,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323501242] [2021-05-21 21:24:30,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323501242] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:30,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:30,903 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:30,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960193393] [2021-05-21 21:24:30,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:30,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:30,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:30,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:30,904 INFO L87 Difference]: Start difference. First operand 3544 states and 11876 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:32,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:32,667 INFO L93 Difference]: Finished difference Result 6535 states and 22174 transitions. [2021-05-21 21:24:32,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-21 21:24:32,668 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:32,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:32,681 INFO L225 Difference]: With dead ends: 6535 [2021-05-21 21:24:32,681 INFO L226 Difference]: Without dead ends: 6483 [2021-05-21 21:24:32,683 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 970.2ms TimeCoverageRelationStatistics Valid=351, Invalid=3809, Unknown=0, NotChecked=0, Total=4160 [2021-05-21 21:24:32,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6483 states. [2021-05-21 21:24:32,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6483 to 3538. [2021-05-21 21:24:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 3.35340684195646) internal successors, (11861), 3537 states have internal predecessors, (11861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:32,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 11861 transitions. [2021-05-21 21:24:32,759 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 11861 transitions. Word has length 39 [2021-05-21 21:24:32,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:32,760 INFO L482 AbstractCegarLoop]: Abstraction has 3538 states and 11861 transitions. [2021-05-21 21:24:32,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:32,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 11861 transitions. [2021-05-21 21:24:32,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:32,765 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:32,765 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:32,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-21 21:24:32,765 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:32,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:32,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1656065096, now seen corresponding path program 18 times [2021-05-21 21:24:32,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:32,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830278356] [2021-05-21 21:24:32,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:32,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:32,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:32,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830278356] [2021-05-21 21:24:32,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830278356] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:32,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:32,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:32,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182944676] [2021-05-21 21:24:32,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:32,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:32,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:32,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:32,941 INFO L87 Difference]: Start difference. First operand 3538 states and 11861 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:34,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:34,219 INFO L93 Difference]: Finished difference Result 5563 states and 18698 transitions. [2021-05-21 21:24:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:24:34,219 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:34,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:34,228 INFO L225 Difference]: With dead ends: 5563 [2021-05-21 21:24:34,228 INFO L226 Difference]: Without dead ends: 5508 [2021-05-21 21:24:34,229 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 672.0ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:24:34,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-05-21 21:24:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 3622. [2021-05-21 21:24:34,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3621 states have (on average 3.352388842861088) internal successors, (12139), 3621 states have internal predecessors, (12139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:34,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 12139 transitions. [2021-05-21 21:24:34,298 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 12139 transitions. Word has length 39 [2021-05-21 21:24:34,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:34,298 INFO L482 AbstractCegarLoop]: Abstraction has 3622 states and 12139 transitions. [2021-05-21 21:24:34,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:34,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 12139 transitions. [2021-05-21 21:24:34,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:34,303 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:34,303 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:34,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-21 21:24:34,303 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:34,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:34,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1466249978, now seen corresponding path program 19 times [2021-05-21 21:24:34,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:34,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719919479] [2021-05-21 21:24:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:34,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:34,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719919479] [2021-05-21 21:24:34,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719919479] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:34,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:34,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:34,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499749232] [2021-05-21 21:24:34,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:34,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:34,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:34,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:34,482 INFO L87 Difference]: Start difference. First operand 3622 states and 12139 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:35,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:35,972 INFO L93 Difference]: Finished difference Result 6424 states and 21632 transitions. [2021-05-21 21:24:35,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-21 21:24:35,973 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:35,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:35,983 INFO L225 Difference]: With dead ends: 6424 [2021-05-21 21:24:35,983 INFO L226 Difference]: Without dead ends: 6364 [2021-05-21 21:24:35,984 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 772.0ms TimeCoverageRelationStatistics Valid=275, Invalid=2805, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:24:36,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2021-05-21 21:24:36,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 3620. [2021-05-21 21:24:36,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3619 states have (on average 3.3528599060513953) internal successors, (12134), 3619 states have internal predecessors, (12134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:36,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 12134 transitions. [2021-05-21 21:24:36,051 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 12134 transitions. Word has length 39 [2021-05-21 21:24:36,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:36,051 INFO L482 AbstractCegarLoop]: Abstraction has 3620 states and 12134 transitions. [2021-05-21 21:24:36,051 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:36,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 12134 transitions. [2021-05-21 21:24:36,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:36,056 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:36,056 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:36,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-21 21:24:36,056 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:36,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:36,057 INFO L82 PathProgramCache]: Analyzing trace with hash 951313716, now seen corresponding path program 20 times [2021-05-21 21:24:36,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:36,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477528567] [2021-05-21 21:24:36,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:36,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:36,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:36,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477528567] [2021-05-21 21:24:36,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477528567] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:36,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:36,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:36,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113521827] [2021-05-21 21:24:36,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:36,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:36,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:36,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:36,213 INFO L87 Difference]: Start difference. First operand 3620 states and 12134 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:37,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:37,331 INFO L93 Difference]: Finished difference Result 5484 states and 18506 transitions. [2021-05-21 21:24:37,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-21 21:24:37,331 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:37,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:37,339 INFO L225 Difference]: With dead ends: 5484 [2021-05-21 21:24:37,340 INFO L226 Difference]: Without dead ends: 5393 [2021-05-21 21:24:37,340 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 560.1ms TimeCoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:24:37,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2021-05-21 21:24:37,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 3620. [2021-05-21 21:24:37,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3619 states have (on average 3.3512019894998617) internal successors, (12128), 3619 states have internal predecessors, (12128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:37,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 12128 transitions. [2021-05-21 21:24:37,402 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 12128 transitions. Word has length 39 [2021-05-21 21:24:37,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:37,402 INFO L482 AbstractCegarLoop]: Abstraction has 3620 states and 12128 transitions. [2021-05-21 21:24:37,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 12128 transitions. [2021-05-21 21:24:37,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:37,406 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:37,406 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:37,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-21 21:24:37,406 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:37,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:37,407 INFO L82 PathProgramCache]: Analyzing trace with hash -551168490, now seen corresponding path program 21 times [2021-05-21 21:24:37,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:37,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115964510] [2021-05-21 21:24:37,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:37,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:37,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115964510] [2021-05-21 21:24:37,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115964510] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:37,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:37,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:37,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230318014] [2021-05-21 21:24:37,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:37,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:37,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:37,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:37,568 INFO L87 Difference]: Start difference. First operand 3620 states and 12128 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:38,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:38,903 INFO L93 Difference]: Finished difference Result 6297 states and 21308 transitions. [2021-05-21 21:24:38,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:24:38,904 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:38,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:38,914 INFO L225 Difference]: With dead ends: 6297 [2021-05-21 21:24:38,914 INFO L226 Difference]: Without dead ends: 6181 [2021-05-21 21:24:38,915 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 680.3ms TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:24:38,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2021-05-21 21:24:38,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 3598. [2021-05-21 21:24:38,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 3.3525159855435085) internal successors, (12059), 3597 states have internal predecessors, (12059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:38,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12059 transitions. [2021-05-21 21:24:38,996 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12059 transitions. Word has length 39 [2021-05-21 21:24:38,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:38,997 INFO L482 AbstractCegarLoop]: Abstraction has 3598 states and 12059 transitions. [2021-05-21 21:24:38,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:38,997 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12059 transitions. [2021-05-21 21:24:39,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:39,001 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:39,001 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:39,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-21 21:24:39,001 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:39,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:39,002 INFO L82 PathProgramCache]: Analyzing trace with hash -17245494, now seen corresponding path program 22 times [2021-05-21 21:24:39,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:39,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075591254] [2021-05-21 21:24:39,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:39,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:39,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075591254] [2021-05-21 21:24:39,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075591254] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:39,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:39,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 21:24:39,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601818822] [2021-05-21 21:24:39,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 21:24:39,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:39,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 21:24:39,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-05-21 21:24:39,143 INFO L87 Difference]: Start difference. First operand 3598 states and 12059 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:39,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:39,858 INFO L93 Difference]: Finished difference Result 3859 states and 12840 transitions. [2021-05-21 21:24:39,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 21:24:39,858 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:39,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:39,864 INFO L225 Difference]: With dead ends: 3859 [2021-05-21 21:24:39,864 INFO L226 Difference]: Without dead ends: 3792 [2021-05-21 21:24:39,865 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 456.4ms TimeCoverageRelationStatistics Valid=157, Invalid=1325, Unknown=0, NotChecked=0, Total=1482 [2021-05-21 21:24:39,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3792 states. [2021-05-21 21:24:39,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3792 to 3610. [2021-05-21 21:24:39,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.3485730119146577) internal successors, (12085), 3609 states have internal predecessors, (12085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:39,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12085 transitions. [2021-05-21 21:24:39,915 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12085 transitions. Word has length 39 [2021-05-21 21:24:39,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:39,915 INFO L482 AbstractCegarLoop]: Abstraction has 3610 states and 12085 transitions. [2021-05-21 21:24:39,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:39,915 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12085 transitions. [2021-05-21 21:24:39,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:39,919 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:39,919 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:39,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-21 21:24:39,920 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:39,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:39,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1736861464, now seen corresponding path program 23 times [2021-05-21 21:24:39,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:39,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802831760] [2021-05-21 21:24:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:40,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:40,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:40,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802831760] [2021-05-21 21:24:40,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802831760] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:40,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:40,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 21:24:40,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190610331] [2021-05-21 21:24:40,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 21:24:40,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:40,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 21:24:40,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-05-21 21:24:40,059 INFO L87 Difference]: Start difference. First operand 3610 states and 12085 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:41,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:41,031 INFO L93 Difference]: Finished difference Result 3857 states and 12839 transitions. [2021-05-21 21:24:41,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 21:24:41,031 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:41,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:41,037 INFO L225 Difference]: With dead ends: 3857 [2021-05-21 21:24:41,038 INFO L226 Difference]: Without dead ends: 3796 [2021-05-21 21:24:41,038 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 632.8ms TimeCoverageRelationStatistics Valid=209, Invalid=1771, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 21:24:41,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3796 states. [2021-05-21 21:24:41,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3796 to 3598. [2021-05-21 21:24:41,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 3.349179872115652) internal successors, (12047), 3597 states have internal predecessors, (12047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:41,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12047 transitions. [2021-05-21 21:24:41,108 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12047 transitions. Word has length 39 [2021-05-21 21:24:41,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:41,108 INFO L482 AbstractCegarLoop]: Abstraction has 3598 states and 12047 transitions. [2021-05-21 21:24:41,108 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:41,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12047 transitions. [2021-05-21 21:24:41,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:41,112 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:41,112 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:41,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-21 21:24:41,112 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:41,113 INFO L82 PathProgramCache]: Analyzing trace with hash 368691914, now seen corresponding path program 24 times [2021-05-21 21:24:41,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:41,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735847926] [2021-05-21 21:24:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:41,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:41,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:41,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735847926] [2021-05-21 21:24:41,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735847926] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:41,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:41,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 21:24:41,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397335841] [2021-05-21 21:24:41,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 21:24:41,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:41,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 21:24:41,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-05-21 21:24:41,281 INFO L87 Difference]: Start difference. First operand 3598 states and 12047 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:42,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:42,255 INFO L93 Difference]: Finished difference Result 3911 states and 12982 transitions. [2021-05-21 21:24:42,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 21:24:42,255 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:42,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:42,261 INFO L225 Difference]: With dead ends: 3911 [2021-05-21 21:24:42,261 INFO L226 Difference]: Without dead ends: 3781 [2021-05-21 21:24:42,262 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 647.3ms TimeCoverageRelationStatistics Valid=210, Invalid=1860, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:24:42,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3781 states. [2021-05-21 21:24:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3781 to 3574. [2021-05-21 21:24:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.3515253288553035) internal successors, (11975), 3573 states have internal predecessors, (11975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11975 transitions. [2021-05-21 21:24:42,312 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11975 transitions. Word has length 39 [2021-05-21 21:24:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:42,312 INFO L482 AbstractCegarLoop]: Abstraction has 3574 states and 11975 transitions. [2021-05-21 21:24:42,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:42,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11975 transitions. [2021-05-21 21:24:42,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:42,317 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:42,317 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:42,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-21 21:24:42,317 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:42,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:42,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2088323530, now seen corresponding path program 25 times [2021-05-21 21:24:42,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:42,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784640478] [2021-05-21 21:24:42,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:42,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:42,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784640478] [2021-05-21 21:24:42,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784640478] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:42,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:42,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:42,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521030098] [2021-05-21 21:24:42,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:42,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:42,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:42,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:42,478 INFO L87 Difference]: Start difference. First operand 3574 states and 11975 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:43,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:43,331 INFO L93 Difference]: Finished difference Result 3867 states and 12844 transitions. [2021-05-21 21:24:43,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-21 21:24:43,331 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:43,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:43,337 INFO L225 Difference]: With dead ends: 3867 [2021-05-21 21:24:43,337 INFO L226 Difference]: Without dead ends: 3800 [2021-05-21 21:24:43,337 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 569.9ms TimeCoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2021-05-21 21:24:43,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2021-05-21 21:24:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3574. [2021-05-21 21:24:43,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.348166806605094) internal successors, (11963), 3573 states have internal predecessors, (11963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:43,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11963 transitions. [2021-05-21 21:24:43,388 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11963 transitions. Word has length 39 [2021-05-21 21:24:43,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:43,388 INFO L482 AbstractCegarLoop]: Abstraction has 3574 states and 11963 transitions. [2021-05-21 21:24:43,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:43,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11963 transitions. [2021-05-21 21:24:43,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:43,392 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:43,392 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:43,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-21 21:24:43,393 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:43,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:43,393 INFO L82 PathProgramCache]: Analyzing trace with hash 487027796, now seen corresponding path program 26 times [2021-05-21 21:24:43,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:43,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325749603] [2021-05-21 21:24:43,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:43,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:43,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:43,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325749603] [2021-05-21 21:24:43,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325749603] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:43,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:43,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:43,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885121073] [2021-05-21 21:24:43,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:43,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:43,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:43,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:43,559 INFO L87 Difference]: Start difference. First operand 3574 states and 11963 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:44,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:44,616 INFO L93 Difference]: Finished difference Result 3904 states and 12922 transitions. [2021-05-21 21:24:44,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:24:44,616 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:44,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:44,622 INFO L225 Difference]: With dead ends: 3904 [2021-05-21 21:24:44,622 INFO L226 Difference]: Without dead ends: 3843 [2021-05-21 21:24:44,623 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 697.3ms TimeCoverageRelationStatistics Valid=249, Invalid=2201, Unknown=0, NotChecked=0, Total=2450 [2021-05-21 21:24:44,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2021-05-21 21:24:44,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3562. [2021-05-21 21:24:44,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3510249929795) internal successors, (11933), 3561 states have internal predecessors, (11933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11933 transitions. [2021-05-21 21:24:44,676 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11933 transitions. Word has length 39 [2021-05-21 21:24:44,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:44,677 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11933 transitions. [2021-05-21 21:24:44,677 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:44,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11933 transitions. [2021-05-21 21:24:44,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:44,681 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:44,681 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:44,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-21 21:24:44,681 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:44,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:44,681 INFO L82 PathProgramCache]: Analyzing trace with hash -673136106, now seen corresponding path program 27 times [2021-05-21 21:24:44,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:44,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964733179] [2021-05-21 21:24:44,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:44,833 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:44,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964733179] [2021-05-21 21:24:44,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964733179] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:44,833 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:44,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:44,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331596654] [2021-05-21 21:24:44,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:44,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:44,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:44,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:44,834 INFO L87 Difference]: Start difference. First operand 3562 states and 11933 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:45,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:45,656 INFO L93 Difference]: Finished difference Result 3819 states and 12706 transitions. [2021-05-21 21:24:45,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-21 21:24:45,656 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:45,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:45,663 INFO L225 Difference]: With dead ends: 3819 [2021-05-21 21:24:45,663 INFO L226 Difference]: Without dead ends: 3752 [2021-05-21 21:24:45,663 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 519.6ms TimeCoverageRelationStatistics Valid=176, Invalid=1546, Unknown=0, NotChecked=0, Total=1722 [2021-05-21 21:24:45,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2021-05-21 21:24:45,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3570. [2021-05-21 21:24:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3570 states, 3569 states have (on average 3.347996637713645) internal successors, (11949), 3569 states have internal predecessors, (11949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:45,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3570 states to 3570 states and 11949 transitions. [2021-05-21 21:24:45,717 INFO L78 Accepts]: Start accepts. Automaton has 3570 states and 11949 transitions. Word has length 39 [2021-05-21 21:24:45,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:45,717 INFO L482 AbstractCegarLoop]: Abstraction has 3570 states and 11949 transitions. [2021-05-21 21:24:45,717 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:45,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3570 states and 11949 transitions. [2021-05-21 21:24:45,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:45,721 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:45,721 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:45,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-21 21:24:45,722 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:45,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:45,722 INFO L82 PathProgramCache]: Analyzing trace with hash -803730954, now seen corresponding path program 28 times [2021-05-21 21:24:45,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:45,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410432699] [2021-05-21 21:24:45,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:45,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:45,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410432699] [2021-05-21 21:24:45,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410432699] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:45,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:45,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:45,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36106823] [2021-05-21 21:24:45,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:45,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:45,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:45,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:45,883 INFO L87 Difference]: Start difference. First operand 3570 states and 11949 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:46,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:46,716 INFO L93 Difference]: Finished difference Result 3807 states and 12666 transitions. [2021-05-21 21:24:46,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-21 21:24:46,716 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:46,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:46,722 INFO L225 Difference]: With dead ends: 3807 [2021-05-21 21:24:46,723 INFO L226 Difference]: Without dead ends: 3744 [2021-05-21 21:24:46,723 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 530.0ms TimeCoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2021-05-21 21:24:46,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2021-05-21 21:24:46,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3562. [2021-05-21 21:24:46,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.349901713001966) internal successors, (11929), 3561 states have internal predecessors, (11929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:46,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11929 transitions. [2021-05-21 21:24:46,776 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11929 transitions. Word has length 39 [2021-05-21 21:24:46,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:46,776 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11929 transitions. [2021-05-21 21:24:46,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:46,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11929 transitions. [2021-05-21 21:24:46,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:46,781 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:46,781 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:46,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-21 21:24:46,781 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:46,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:46,781 INFO L82 PathProgramCache]: Analyzing trace with hash -939409546, now seen corresponding path program 29 times [2021-05-21 21:24:46,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:46,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205593295] [2021-05-21 21:24:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:46,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:46,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:46,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205593295] [2021-05-21 21:24:46,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205593295] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:46,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:46,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:46,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505129696] [2021-05-21 21:24:46,942 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:46,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:46,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:46,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:46,942 INFO L87 Difference]: Start difference. First operand 3562 states and 11929 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:48,090 INFO L93 Difference]: Finished difference Result 3914 states and 12924 transitions. [2021-05-21 21:24:48,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:24:48,091 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:48,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:48,097 INFO L225 Difference]: With dead ends: 3914 [2021-05-21 21:24:48,097 INFO L226 Difference]: Without dead ends: 3865 [2021-05-21 21:24:48,097 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 767.2ms TimeCoverageRelationStatistics Valid=262, Invalid=2390, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:24:48,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2021-05-21 21:24:48,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3556. [2021-05-21 21:24:48,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.351336146272855) internal successors, (11914), 3555 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:48,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11914 transitions. [2021-05-21 21:24:48,152 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11914 transitions. Word has length 39 [2021-05-21 21:24:48,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:48,152 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 11914 transitions. [2021-05-21 21:24:48,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:48,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11914 transitions. [2021-05-21 21:24:48,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:48,156 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:48,157 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:48,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-21 21:24:48,157 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:48,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:48,157 INFO L82 PathProgramCache]: Analyzing trace with hash -20925976, now seen corresponding path program 30 times [2021-05-21 21:24:48,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:48,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864304104] [2021-05-21 21:24:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:48,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:48,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864304104] [2021-05-21 21:24:48,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864304104] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:48,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:48,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:48,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816627774] [2021-05-21 21:24:48,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:48,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:48,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:48,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:48,310 INFO L87 Difference]: Start difference. First operand 3556 states and 11914 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:49,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:49,162 INFO L93 Difference]: Finished difference Result 3841 states and 12736 transitions. [2021-05-21 21:24:49,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 21:24:49,162 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:49,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:49,168 INFO L225 Difference]: With dead ends: 3841 [2021-05-21 21:24:49,168 INFO L226 Difference]: Without dead ends: 3786 [2021-05-21 21:24:49,169 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 545.3ms TimeCoverageRelationStatistics Valid=194, Invalid=1698, Unknown=0, NotChecked=0, Total=1892 [2021-05-21 21:24:49,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-05-21 21:24:49,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3556. [2021-05-21 21:24:49,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.350773558368495) internal successors, (11912), 3555 states have internal predecessors, (11912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:49,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11912 transitions. [2021-05-21 21:24:49,221 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11912 transitions. Word has length 39 [2021-05-21 21:24:49,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:49,221 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 11912 transitions. [2021-05-21 21:24:49,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:49,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11912 transitions. [2021-05-21 21:24:49,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:49,226 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:49,226 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:49,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-21 21:24:49,226 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:49,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:49,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1151726246, now seen corresponding path program 31 times [2021-05-21 21:24:49,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:49,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985319554] [2021-05-21 21:24:49,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:49,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:49,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985319554] [2021-05-21 21:24:49,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985319554] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:49,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:49,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:49,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493458984] [2021-05-21 21:24:49,387 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:49,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:49,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:49,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:49,388 INFO L87 Difference]: Start difference. First operand 3556 states and 11912 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:50,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:50,215 INFO L93 Difference]: Finished difference Result 3784 states and 12604 transitions. [2021-05-21 21:24:50,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-21 21:24:50,215 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:50,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:50,221 INFO L225 Difference]: With dead ends: 3784 [2021-05-21 21:24:50,221 INFO L226 Difference]: Without dead ends: 3728 [2021-05-21 21:24:50,222 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 517.7ms TimeCoverageRelationStatistics Valid=180, Invalid=1542, Unknown=0, NotChecked=0, Total=1722 [2021-05-21 21:24:50,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2021-05-21 21:24:50,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 3546. [2021-05-21 21:24:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3546 states, 3545 states have (on average 3.3543018335684063) internal successors, (11891), 3545 states have internal predecessors, (11891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:50,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 11891 transitions. [2021-05-21 21:24:50,272 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 11891 transitions. Word has length 39 [2021-05-21 21:24:50,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:50,272 INFO L482 AbstractCegarLoop]: Abstraction has 3546 states and 11891 transitions. [2021-05-21 21:24:50,272 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:50,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 11891 transitions. [2021-05-21 21:24:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:50,276 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:50,276 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:50,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-21 21:24:50,276 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:50,277 INFO L82 PathProgramCache]: Analyzing trace with hash -901192728, now seen corresponding path program 32 times [2021-05-21 21:24:50,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:50,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810625549] [2021-05-21 21:24:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:50,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:50,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:50,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810625549] [2021-05-21 21:24:50,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810625549] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:50,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:50,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:50,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011684976] [2021-05-21 21:24:50,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:50,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:50,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:50,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:50,430 INFO L87 Difference]: Start difference. First operand 3546 states and 11891 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:51,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:51,545 INFO L93 Difference]: Finished difference Result 3995 states and 13156 transitions. [2021-05-21 21:24:51,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-21 21:24:51,545 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:51,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:51,551 INFO L225 Difference]: With dead ends: 3995 [2021-05-21 21:24:51,551 INFO L226 Difference]: Without dead ends: 3858 [2021-05-21 21:24:51,552 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 734.4ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:24:51,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2021-05-21 21:24:51,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3550. [2021-05-21 21:24:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.353338968723584) internal successors, (11901), 3549 states have internal predecessors, (11901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:51,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11901 transitions. [2021-05-21 21:24:51,599 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11901 transitions. Word has length 39 [2021-05-21 21:24:51,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:51,599 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11901 transitions. [2021-05-21 21:24:51,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:51,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11901 transitions. [2021-05-21 21:24:51,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:51,621 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:51,621 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:51,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-21 21:24:51,621 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:51,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:51,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1898883668, now seen corresponding path program 33 times [2021-05-21 21:24:51,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:51,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926560730] [2021-05-21 21:24:51,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:51,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:51,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:51,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926560730] [2021-05-21 21:24:51,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926560730] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:51,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:51,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:51,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725849538] [2021-05-21 21:24:51,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:51,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:51,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:51,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:51,770 INFO L87 Difference]: Start difference. First operand 3550 states and 11901 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:52,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:52,859 INFO L93 Difference]: Finished difference Result 4033 states and 13226 transitions. [2021-05-21 21:24:52,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:24:52,859 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:52,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:52,865 INFO L225 Difference]: With dead ends: 4033 [2021-05-21 21:24:52,865 INFO L226 Difference]: Without dead ends: 3969 [2021-05-21 21:24:52,866 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 714.4ms TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:24:52,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2021-05-21 21:24:52,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 3550. [2021-05-21 21:24:52,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.353338968723584) internal successors, (11901), 3549 states have internal predecessors, (11901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:52,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11901 transitions. [2021-05-21 21:24:52,922 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11901 transitions. Word has length 39 [2021-05-21 21:24:52,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:52,922 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11901 transitions. [2021-05-21 21:24:52,922 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:52,922 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11901 transitions. [2021-05-21 21:24:52,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:52,927 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:52,927 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:52,927 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-21 21:24:52,927 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:52,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:52,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1477600058, now seen corresponding path program 34 times [2021-05-21 21:24:52,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:52,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983118132] [2021-05-21 21:24:52,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:53,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:53,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:53,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983118132] [2021-05-21 21:24:53,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983118132] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:53,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:53,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:53,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018940241] [2021-05-21 21:24:53,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:53,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:53,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:53,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:53,094 INFO L87 Difference]: Start difference. First operand 3550 states and 11901 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:54,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:54,038 INFO L93 Difference]: Finished difference Result 3938 states and 12974 transitions. [2021-05-21 21:24:54,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-21 21:24:54,038 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:54,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:54,045 INFO L225 Difference]: With dead ends: 3938 [2021-05-21 21:24:54,045 INFO L226 Difference]: Without dead ends: 3883 [2021-05-21 21:24:54,045 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 588.8ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-05-21 21:24:54,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3883 states. [2021-05-21 21:24:54,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3883 to 3552. [2021-05-21 21:24:54,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3552 states, 3551 states have (on average 3.3522951281329205) internal successors, (11904), 3551 states have internal predecessors, (11904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:54,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 11904 transitions. [2021-05-21 21:24:54,144 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 11904 transitions. Word has length 39 [2021-05-21 21:24:54,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:54,144 INFO L482 AbstractCegarLoop]: Abstraction has 3552 states and 11904 transitions. [2021-05-21 21:24:54,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:54,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 11904 transitions. [2021-05-21 21:24:54,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:54,149 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:54,149 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:54,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-21 21:24:54,149 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:54,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:54,149 INFO L82 PathProgramCache]: Analyzing trace with hash -304947836, now seen corresponding path program 35 times [2021-05-21 21:24:54,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:54,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329935031] [2021-05-21 21:24:54,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:54,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:54,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329935031] [2021-05-21 21:24:54,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329935031] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:54,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:54,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:54,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938106306] [2021-05-21 21:24:54,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:54,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:54,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:54,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:54,301 INFO L87 Difference]: Start difference. First operand 3552 states and 11904 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:55,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:55,146 INFO L93 Difference]: Finished difference Result 3908 states and 12913 transitions. [2021-05-21 21:24:55,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 21:24:55,147 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:55,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:55,153 INFO L225 Difference]: With dead ends: 3908 [2021-05-21 21:24:55,153 INFO L226 Difference]: Without dead ends: 3848 [2021-05-21 21:24:55,154 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 542.1ms TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2021-05-21 21:24:55,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3848 states. [2021-05-21 21:24:55,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3848 to 3550. [2021-05-21 21:24:55,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.352775429698507) internal successors, (11899), 3549 states have internal predecessors, (11899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:55,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11899 transitions. [2021-05-21 21:24:55,211 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11899 transitions. Word has length 39 [2021-05-21 21:24:55,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:55,211 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11899 transitions. [2021-05-21 21:24:55,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:55,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11899 transitions. [2021-05-21 21:24:55,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:55,215 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:55,216 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:55,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-21 21:24:55,216 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:55,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:55,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1910452918, now seen corresponding path program 36 times [2021-05-21 21:24:55,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:55,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370549872] [2021-05-21 21:24:55,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:55,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:55,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370549872] [2021-05-21 21:24:55,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370549872] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:55,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:55,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 21:24:55,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393619375] [2021-05-21 21:24:55,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 21:24:55,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:55,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 21:24:55,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-05-21 21:24:55,371 INFO L87 Difference]: Start difference. First operand 3550 states and 11899 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:56,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:56,138 INFO L93 Difference]: Finished difference Result 3819 states and 12700 transitions. [2021-05-21 21:24:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-21 21:24:56,138 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:56,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:56,144 INFO L225 Difference]: With dead ends: 3819 [2021-05-21 21:24:56,144 INFO L226 Difference]: Without dead ends: 3743 [2021-05-21 21:24:56,144 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 491.2ms TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2021-05-21 21:24:56,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2021-05-21 21:24:56,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 3558. [2021-05-21 21:24:56,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3557 states have (on average 3.3497329210008435) internal successors, (11915), 3557 states have internal predecessors, (11915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:56,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 11915 transitions. [2021-05-21 21:24:56,196 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 11915 transitions. Word has length 39 [2021-05-21 21:24:56,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:56,196 INFO L482 AbstractCegarLoop]: Abstraction has 3558 states and 11915 transitions. [2021-05-21 21:24:56,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:56,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 11915 transitions. [2021-05-21 21:24:56,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:56,200 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:56,200 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:56,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-21 21:24:56,200 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:56,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:56,201 INFO L82 PathProgramCache]: Analyzing trace with hash 892399306, now seen corresponding path program 37 times [2021-05-21 21:24:56,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:56,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777977326] [2021-05-21 21:24:56,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:56,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:56,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777977326] [2021-05-21 21:24:56,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777977326] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:56,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:56,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:56,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858385962] [2021-05-21 21:24:56,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:56,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:56,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:56,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:56,360 INFO L87 Difference]: Start difference. First operand 3558 states and 11915 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:57,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:57,211 INFO L93 Difference]: Finished difference Result 3801 states and 12646 transitions. [2021-05-21 21:24:57,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-21 21:24:57,212 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:57,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:57,218 INFO L225 Difference]: With dead ends: 3801 [2021-05-21 21:24:57,218 INFO L226 Difference]: Without dead ends: 3723 [2021-05-21 21:24:57,218 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 539.0ms TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2021-05-21 21:24:57,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2021-05-21 21:24:57,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3538. [2021-05-21 21:24:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 3.3551031947978514) internal successors, (11867), 3537 states have internal predecessors, (11867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:57,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 11867 transitions. [2021-05-21 21:24:57,266 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 11867 transitions. Word has length 39 [2021-05-21 21:24:57,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:57,266 INFO L482 AbstractCegarLoop]: Abstraction has 3538 states and 11867 transitions. [2021-05-21 21:24:57,266 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:57,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 11867 transitions. [2021-05-21 21:24:57,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:57,270 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:57,270 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:57,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-21 21:24:57,270 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:57,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:57,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1082064394, now seen corresponding path program 38 times [2021-05-21 21:24:57,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:57,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290073961] [2021-05-21 21:24:57,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:57,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:57,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290073961] [2021-05-21 21:24:57,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290073961] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:57,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:57,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:57,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772173440] [2021-05-21 21:24:57,433 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:57,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:57,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:57,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:57,433 INFO L87 Difference]: Start difference. First operand 3538 states and 11867 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:58,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:58,490 INFO L93 Difference]: Finished difference Result 3974 states and 13117 transitions. [2021-05-21 21:24:58,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 21:24:58,491 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:58,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:58,497 INFO L225 Difference]: With dead ends: 3974 [2021-05-21 21:24:58,497 INFO L226 Difference]: Without dead ends: 3868 [2021-05-21 21:24:58,497 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 684.3ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:24:58,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2021-05-21 21:24:58,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3554. [2021-05-21 21:24:58,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3546298902336056) internal successors, (11919), 3553 states have internal predecessors, (11919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:58,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11919 transitions. [2021-05-21 21:24:58,546 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11919 transitions. Word has length 39 [2021-05-21 21:24:58,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:58,546 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11919 transitions. [2021-05-21 21:24:58,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:58,546 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11919 transitions. [2021-05-21 21:24:58,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:58,550 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:58,550 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:58,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-21 21:24:58,550 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:58,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:58,551 INFO L82 PathProgramCache]: Analyzing trace with hash -412826506, now seen corresponding path program 39 times [2021-05-21 21:24:58,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:58,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913010571] [2021-05-21 21:24:58,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:58,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:58,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:58,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913010571] [2021-05-21 21:24:58,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913010571] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:58,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:58,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:58,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333066304] [2021-05-21 21:24:58,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:58,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:58,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:58,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:58,703 INFO L87 Difference]: Start difference. First operand 3554 states and 11919 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:59,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:24:59,747 INFO L93 Difference]: Finished difference Result 4043 states and 13251 transitions. [2021-05-21 21:24:59,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-21 21:24:59,748 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:24:59,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:24:59,754 INFO L225 Difference]: With dead ends: 4043 [2021-05-21 21:24:59,754 INFO L226 Difference]: Without dead ends: 3979 [2021-05-21 21:24:59,754 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 682.4ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:24:59,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2021-05-21 21:24:59,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3554. [2021-05-21 21:24:59,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3546298902336056) internal successors, (11919), 3553 states have internal predecessors, (11919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:59,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11919 transitions. [2021-05-21 21:24:59,802 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11919 transitions. Word has length 39 [2021-05-21 21:24:59,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:24:59,802 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11919 transitions. [2021-05-21 21:24:59,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:24:59,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11919 transitions. [2021-05-21 21:24:59,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:24:59,806 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:24:59,806 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:24:59,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-21 21:24:59,806 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:24:59,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:24:59,807 INFO L82 PathProgramCache]: Analyzing trace with hash 505657064, now seen corresponding path program 40 times [2021-05-21 21:24:59,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:24:59,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568703735] [2021-05-21 21:24:59,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:24:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:24:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:24:59,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:24:59,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568703735] [2021-05-21 21:24:59,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568703735] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:24:59,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:24:59,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:24:59,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987352742] [2021-05-21 21:24:59,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:24:59,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:24:59,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:24:59,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:24:59,987 INFO L87 Difference]: Start difference. First operand 3554 states and 11919 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:00,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:00,789 INFO L93 Difference]: Finished difference Result 3940 states and 12979 transitions. [2021-05-21 21:25:00,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-21 21:25:00,789 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:00,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:00,795 INFO L225 Difference]: With dead ends: 3940 [2021-05-21 21:25:00,795 INFO L226 Difference]: Without dead ends: 3897 [2021-05-21 21:25:00,796 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 489.4ms TimeCoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2021-05-21 21:25:00,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2021-05-21 21:25:00,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3560. [2021-05-21 21:25:00,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 3.352627142455746) internal successors, (11932), 3559 states have internal predecessors, (11932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11932 transitions. [2021-05-21 21:25:00,843 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11932 transitions. Word has length 39 [2021-05-21 21:25:00,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:00,844 INFO L482 AbstractCegarLoop]: Abstraction has 3560 states and 11932 transitions. [2021-05-21 21:25:00,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:00,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11932 transitions. [2021-05-21 21:25:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:00,847 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:00,848 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:00,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-21 21:25:00,848 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:00,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:00,848 INFO L82 PathProgramCache]: Analyzing trace with hash 525805798, now seen corresponding path program 41 times [2021-05-21 21:25:00,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:00,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101455657] [2021-05-21 21:25:00,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:01,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:01,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:01,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101455657] [2021-05-21 21:25:01,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101455657] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:01,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:01,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:25:01,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678836539] [2021-05-21 21:25:01,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:25:01,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:01,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:25:01,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:25:01,019 INFO L87 Difference]: Start difference. First operand 3560 states and 11932 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:01,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:01,912 INFO L93 Difference]: Finished difference Result 3897 states and 12878 transitions. [2021-05-21 21:25:01,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 21:25:01,913 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:01,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:01,919 INFO L225 Difference]: With dead ends: 3897 [2021-05-21 21:25:01,919 INFO L226 Difference]: Without dead ends: 3854 [2021-05-21 21:25:01,919 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 580.0ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-05-21 21:25:01,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2021-05-21 21:25:01,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3556. [2021-05-21 21:25:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.353586497890295) internal successors, (11922), 3555 states have internal predecessors, (11922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:01,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11922 transitions. [2021-05-21 21:25:01,969 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11922 transitions. Word has length 39 [2021-05-21 21:25:01,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:01,969 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 11922 transitions. [2021-05-21 21:25:01,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:01,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11922 transitions. [2021-05-21 21:25:01,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:01,973 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:01,973 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:01,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-21 21:25:01,973 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:01,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:01,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1678309286, now seen corresponding path program 42 times [2021-05-21 21:25:01,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:01,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059118738] [2021-05-21 21:25:01,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:02,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:02,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059118738] [2021-05-21 21:25:02,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059118738] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:02,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:02,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:25:02,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614558048] [2021-05-21 21:25:02,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:25:02,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:02,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:25:02,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:25:02,142 INFO L87 Difference]: Start difference. First operand 3556 states and 11922 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:02,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:02,998 INFO L93 Difference]: Finished difference Result 3918 states and 12938 transitions. [2021-05-21 21:25:02,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-21 21:25:02,999 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:03,005 INFO L225 Difference]: With dead ends: 3918 [2021-05-21 21:25:03,005 INFO L226 Difference]: Without dead ends: 3858 [2021-05-21 21:25:03,005 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 559.3ms TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2021-05-21 21:25:03,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2021-05-21 21:25:03,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3554. [2021-05-21 21:25:03,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.354066985645933) internal successors, (11917), 3553 states have internal predecessors, (11917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11917 transitions. [2021-05-21 21:25:03,054 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11917 transitions. Word has length 39 [2021-05-21 21:25:03,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:03,055 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11917 transitions. [2021-05-21 21:25:03,055 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:03,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11917 transitions. [2021-05-21 21:25:03,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:03,059 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:03,059 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:03,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-21 21:25:03,059 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:03,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:03,059 INFO L82 PathProgramCache]: Analyzing trace with hash -401257256, now seen corresponding path program 43 times [2021-05-21 21:25:03,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:03,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686192355] [2021-05-21 21:25:03,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:03,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:03,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686192355] [2021-05-21 21:25:03,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686192355] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:03,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:03,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 21:25:03,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419334571] [2021-05-21 21:25:03,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 21:25:03,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:03,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 21:25:03,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-05-21 21:25:03,201 INFO L87 Difference]: Start difference. First operand 3554 states and 11917 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:03,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:03,926 INFO L93 Difference]: Finished difference Result 3886 states and 12878 transitions. [2021-05-21 21:25:03,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-21 21:25:03,927 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:03,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:03,933 INFO L225 Difference]: With dead ends: 3886 [2021-05-21 21:25:03,934 INFO L226 Difference]: Without dead ends: 3810 [2021-05-21 21:25:03,934 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 440.7ms TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2021-05-21 21:25:03,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2021-05-21 21:25:03,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3562. [2021-05-21 21:25:03,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3510249929795) internal successors, (11933), 3561 states have internal predecessors, (11933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:03,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11933 transitions. [2021-05-21 21:25:03,992 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11933 transitions. Word has length 39 [2021-05-21 21:25:03,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:03,992 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11933 transitions. [2021-05-21 21:25:03,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:03,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11933 transitions. [2021-05-21 21:25:03,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:03,997 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:03,997 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:03,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-21 21:25:03,998 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:03,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:03,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1419310868, now seen corresponding path program 44 times [2021-05-21 21:25:03,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:03,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940423090] [2021-05-21 21:25:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:04,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:04,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940423090] [2021-05-21 21:25:04,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940423090] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:04,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:04,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:25:04,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938617710] [2021-05-21 21:25:04,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:25:04,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:04,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:25:04,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:25:04,162 INFO L87 Difference]: Start difference. First operand 3562 states and 11933 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:04,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:04,987 INFO L93 Difference]: Finished difference Result 3868 states and 12824 transitions. [2021-05-21 21:25:04,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-21 21:25:04,987 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:04,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:04,993 INFO L225 Difference]: With dead ends: 3868 [2021-05-21 21:25:04,993 INFO L226 Difference]: Without dead ends: 3798 [2021-05-21 21:25:04,994 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 505.1ms TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-05-21 21:25:05,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3798 states. [2021-05-21 21:25:05,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3798 to 3550. [2021-05-21 21:25:05,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.354466046773739) internal successors, (11905), 3549 states have internal predecessors, (11905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:05,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11905 transitions. [2021-05-21 21:25:05,046 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11905 transitions. Word has length 39 [2021-05-21 21:25:05,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:05,046 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11905 transitions. [2021-05-21 21:25:05,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:05,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11905 transitions. [2021-05-21 21:25:05,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:05,050 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:05,050 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:05,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-21 21:25:05,050 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:05,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:05,050 INFO L82 PathProgramCache]: Analyzing trace with hash -573127188, now seen corresponding path program 45 times [2021-05-21 21:25:05,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:05,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943153104] [2021-05-21 21:25:05,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:05,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:05,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:05,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943153104] [2021-05-21 21:25:05,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943153104] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:05,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:05,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:25:05,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852432323] [2021-05-21 21:25:05,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:25:05,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:05,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:25:05,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:25:05,212 INFO L87 Difference]: Start difference. First operand 3550 states and 11905 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:06,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:06,706 INFO L93 Difference]: Finished difference Result 5576 states and 18929 transitions. [2021-05-21 21:25:06,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-21 21:25:06,706 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:06,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:06,738 INFO L225 Difference]: With dead ends: 5576 [2021-05-21 21:25:06,738 INFO L226 Difference]: Without dead ends: 5533 [2021-05-21 21:25:06,745 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 847.4ms TimeCoverageRelationStatistics Valid=302, Invalid=3004, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 21:25:06,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2021-05-21 21:25:06,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 3576. [2021-05-21 21:25:06,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3576 states, 3575 states have (on average 3.3532867132867135) internal successors, (11988), 3575 states have internal predecessors, (11988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:06,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3576 states to 3576 states and 11988 transitions. [2021-05-21 21:25:06,806 INFO L78 Accepts]: Start accepts. Automaton has 3576 states and 11988 transitions. Word has length 39 [2021-05-21 21:25:06,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:06,806 INFO L482 AbstractCegarLoop]: Abstraction has 3576 states and 11988 transitions. [2021-05-21 21:25:06,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3576 states and 11988 transitions. [2021-05-21 21:25:06,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:06,811 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:06,811 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:06,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-21 21:25:06,812 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:06,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:06,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1941241806, now seen corresponding path program 46 times [2021-05-21 21:25:06,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:06,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156776378] [2021-05-21 21:25:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:07,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:07,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156776378] [2021-05-21 21:25:07,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156776378] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:07,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:07,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:25:07,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523736896] [2021-05-21 21:25:07,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:25:07,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:07,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:25:07,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:25:07,035 INFO L87 Difference]: Start difference. First operand 3576 states and 11988 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:08,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:08,829 INFO L93 Difference]: Finished difference Result 6437 states and 21859 transitions. [2021-05-21 21:25:08,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-21 21:25:08,829 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:08,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:08,841 INFO L225 Difference]: With dead ends: 6437 [2021-05-21 21:25:08,841 INFO L226 Difference]: Without dead ends: 6385 [2021-05-21 21:25:08,842 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 1033.1ms TimeCoverageRelationStatistics Valid=344, Invalid=3688, Unknown=0, NotChecked=0, Total=4032 [2021-05-21 21:25:08,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6385 states. [2021-05-21 21:25:08,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6385 to 3562. [2021-05-21 21:25:08,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3549564729008705) internal successors, (11947), 3561 states have internal predecessors, (11947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:08,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11947 transitions. [2021-05-21 21:25:08,914 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11947 transitions. Word has length 39 [2021-05-21 21:25:08,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:08,914 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11947 transitions. [2021-05-21 21:25:08,914 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:08,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11947 transitions. [2021-05-21 21:25:08,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:08,918 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:08,918 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:08,918 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-21 21:25:08,918 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:08,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:08,919 INFO L82 PathProgramCache]: Analyzing trace with hash 345356382, now seen corresponding path program 47 times [2021-05-21 21:25:08,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:08,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697595342] [2021-05-21 21:25:08,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:09,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:09,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697595342] [2021-05-21 21:25:09,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697595342] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:09,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:09,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:25:09,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376908694] [2021-05-21 21:25:09,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:25:09,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:09,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:25:09,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:25:09,105 INFO L87 Difference]: Start difference. First operand 3562 states and 11947 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:10,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:10,227 INFO L93 Difference]: Finished difference Result 5393 states and 18145 transitions. [2021-05-21 21:25:10,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-21 21:25:10,227 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:10,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:10,236 INFO L225 Difference]: With dead ends: 5393 [2021-05-21 21:25:10,236 INFO L226 Difference]: Without dead ends: 5338 [2021-05-21 21:25:10,237 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 645.1ms TimeCoverageRelationStatistics Valid=226, Invalid=2126, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 21:25:10,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2021-05-21 21:25:10,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 3582. [2021-05-21 21:25:10,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 3.3546495392348508) internal successors, (12013), 3581 states have internal predecessors, (12013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 12013 transitions. [2021-05-21 21:25:10,292 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 12013 transitions. Word has length 39 [2021-05-21 21:25:10,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:10,292 INFO L482 AbstractCegarLoop]: Abstraction has 3582 states and 12013 transitions. [2021-05-21 21:25:10,293 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 12013 transitions. [2021-05-21 21:25:10,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:10,296 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:10,296 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:10,296 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-21 21:25:10,296 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:10,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:10,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1518008604, now seen corresponding path program 48 times [2021-05-21 21:25:10,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:10,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83787386] [2021-05-21 21:25:10,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:10,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:10,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83787386] [2021-05-21 21:25:10,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83787386] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:10,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:10,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:25:10,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296297577] [2021-05-21 21:25:10,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:25:10,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:10,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:25:10,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:25:10,446 INFO L87 Difference]: Start difference. First operand 3582 states and 12013 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:11,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:11,985 INFO L93 Difference]: Finished difference Result 6254 states and 21079 transitions. [2021-05-21 21:25:11,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-21 21:25:11,985 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:11,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:11,995 INFO L225 Difference]: With dead ends: 6254 [2021-05-21 21:25:11,996 INFO L226 Difference]: Without dead ends: 6194 [2021-05-21 21:25:11,996 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 835.5ms TimeCoverageRelationStatistics Valid=288, Invalid=2904, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 21:25:12,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2021-05-21 21:25:12,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 3580. [2021-05-21 21:25:12,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 3579 states have (on average 3.355127130483375) internal successors, (12008), 3579 states have internal predecessors, (12008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:12,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 12008 transitions. [2021-05-21 21:25:12,058 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 12008 transitions. Word has length 39 [2021-05-21 21:25:12,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:12,058 INFO L482 AbstractCegarLoop]: Abstraction has 3580 states and 12008 transitions. [2021-05-21 21:25:12,058 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:12,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 12008 transitions. [2021-05-21 21:25:12,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:12,062 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:12,062 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:12,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-21 21:25:12,063 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:12,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:12,063 INFO L82 PathProgramCache]: Analyzing trace with hash -359394998, now seen corresponding path program 49 times [2021-05-21 21:25:12,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:12,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516519258] [2021-05-21 21:25:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:12,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:12,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:12,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516519258] [2021-05-21 21:25:12,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516519258] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:12,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:12,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:25:12,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548261375] [2021-05-21 21:25:12,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:25:12,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:12,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:25:12,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:25:12,225 INFO L87 Difference]: Start difference. First operand 3580 states and 12008 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:13,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:13,350 INFO L93 Difference]: Finished difference Result 5284 states and 17876 transitions. [2021-05-21 21:25:13,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 21:25:13,350 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:13,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:13,359 INFO L225 Difference]: With dead ends: 5284 [2021-05-21 21:25:13,359 INFO L226 Difference]: Without dead ends: 5193 [2021-05-21 21:25:13,359 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 560.8ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-05-21 21:25:13,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5193 states. [2021-05-21 21:25:13,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5193 to 3580. [2021-05-21 21:25:13,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 3579 states have (on average 3.353450684548757) internal successors, (12002), 3579 states have internal predecessors, (12002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:13,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 12002 transitions. [2021-05-21 21:25:13,448 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 12002 transitions. Word has length 39 [2021-05-21 21:25:13,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:13,448 INFO L482 AbstractCegarLoop]: Abstraction has 3580 states and 12002 transitions. [2021-05-21 21:25:13,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:13,448 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 12002 transitions. [2021-05-21 21:25:13,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:13,453 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:13,454 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:13,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-21 21:25:13,454 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:13,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:13,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1861877204, now seen corresponding path program 50 times [2021-05-21 21:25:13,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:13,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833235871] [2021-05-21 21:25:13,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:13,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:13,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833235871] [2021-05-21 21:25:13,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833235871] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:13,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:13,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:25:13,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479080624] [2021-05-21 21:25:13,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:25:13,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:13,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:25:13,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:25:13,613 INFO L87 Difference]: Start difference. First operand 3580 states and 12002 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:14,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:14,988 INFO L93 Difference]: Finished difference Result 6116 states and 20752 transitions. [2021-05-21 21:25:14,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:25:14,988 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:14,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:14,999 INFO L225 Difference]: With dead ends: 6116 [2021-05-21 21:25:14,999 INFO L226 Difference]: Without dead ends: 6016 [2021-05-21 21:25:14,999 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 718.0ms TimeCoverageRelationStatistics Valid=238, Invalid=2312, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:25:15,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2021-05-21 21:25:15,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 3574. [2021-05-21 21:25:15,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.352085082563672) internal successors, (11977), 3573 states have internal predecessors, (11977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:15,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11977 transitions. [2021-05-21 21:25:15,067 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11977 transitions. Word has length 39 [2021-05-21 21:25:15,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:15,068 INFO L482 AbstractCegarLoop]: Abstraction has 3574 states and 11977 transitions. [2021-05-21 21:25:15,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:15,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11977 transitions. [2021-05-21 21:25:15,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:15,072 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:15,072 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:15,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-05-21 21:25:15,072 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:15,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:15,073 INFO L82 PathProgramCache]: Analyzing trace with hash -2098502200, now seen corresponding path program 51 times [2021-05-21 21:25:15,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:15,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781499694] [2021-05-21 21:25:15,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:15,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:15,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781499694] [2021-05-21 21:25:15,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781499694] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:15,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:15,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 21:25:15,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887401955] [2021-05-21 21:25:15,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 21:25:15,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:15,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 21:25:15,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-05-21 21:25:15,223 INFO L87 Difference]: Start difference. First operand 3574 states and 11977 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:15,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:15,900 INFO L93 Difference]: Finished difference Result 3841 states and 12759 transitions. [2021-05-21 21:25:15,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 21:25:15,900 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:15,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:15,907 INFO L225 Difference]: With dead ends: 3841 [2021-05-21 21:25:15,907 INFO L226 Difference]: Without dead ends: 3765 [2021-05-21 21:25:15,908 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 422.7ms TimeCoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2021-05-21 21:25:15,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2021-05-21 21:25:15,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3606. [2021-05-21 21:25:15,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.3467406380027738) internal successors, (12065), 3605 states have internal predecessors, (12065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12065 transitions. [2021-05-21 21:25:15,961 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12065 transitions. Word has length 39 [2021-05-21 21:25:15,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:15,961 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 12065 transitions. [2021-05-21 21:25:15,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:15,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12065 transitions. [2021-05-21 21:25:15,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:15,966 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:15,966 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:15,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-05-21 21:25:15,966 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:15,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:15,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1178411484, now seen corresponding path program 52 times [2021-05-21 21:25:15,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:15,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880224329] [2021-05-21 21:25:15,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:16,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:16,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880224329] [2021-05-21 21:25:16,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880224329] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:16,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:16,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:25:16,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991029151] [2021-05-21 21:25:16,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:25:16,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:16,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:25:16,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:25:16,115 INFO L87 Difference]: Start difference. First operand 3606 states and 12065 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:16,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:16,842 INFO L93 Difference]: Finished difference Result 3823 states and 12705 transitions. [2021-05-21 21:25:16,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 21:25:16,842 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:16,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:16,848 INFO L225 Difference]: With dead ends: 3823 [2021-05-21 21:25:16,849 INFO L226 Difference]: Without dead ends: 3757 [2021-05-21 21:25:16,849 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 449.9ms TimeCoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2021-05-21 21:25:16,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2021-05-21 21:25:16,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3598. [2021-05-21 21:25:16,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 3.347511815401724) internal successors, (12041), 3597 states have internal predecessors, (12041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:16,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12041 transitions. [2021-05-21 21:25:16,903 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12041 transitions. Word has length 39 [2021-05-21 21:25:16,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:16,903 INFO L482 AbstractCegarLoop]: Abstraction has 3598 states and 12041 transitions. [2021-05-21 21:25:16,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:16,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12041 transitions. [2021-05-21 21:25:16,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:16,907 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:16,908 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:16,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-05-21 21:25:16,908 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:16,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:16,908 INFO L82 PathProgramCache]: Analyzing trace with hash 896145830, now seen corresponding path program 53 times [2021-05-21 21:25:16,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:16,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325928004] [2021-05-21 21:25:16,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:17,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:17,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:17,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325928004] [2021-05-21 21:25:17,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325928004] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:17,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:17,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:25:17,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943192588] [2021-05-21 21:25:17,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:25:17,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:17,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:25:17,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:25:17,057 INFO L87 Difference]: Start difference. First operand 3598 states and 12041 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:17,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:17,801 INFO L93 Difference]: Finished difference Result 3832 states and 12726 transitions. [2021-05-21 21:25:17,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 21:25:17,802 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:17,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:17,808 INFO L225 Difference]: With dead ends: 3832 [2021-05-21 21:25:17,808 INFO L226 Difference]: Without dead ends: 3670 [2021-05-21 21:25:17,808 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 461.8ms TimeCoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2021-05-21 21:25:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2021-05-21 21:25:17,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3530. [2021-05-21 21:25:17,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3530 states, 3529 states have (on average 3.3587418532162086) internal successors, (11853), 3529 states have internal predecessors, (11853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:17,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 11853 transitions. [2021-05-21 21:25:17,855 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 11853 transitions. Word has length 39 [2021-05-21 21:25:17,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:17,855 INFO L482 AbstractCegarLoop]: Abstraction has 3530 states and 11853 transitions. [2021-05-21 21:25:17,855 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:17,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 11853 transitions. [2021-05-21 21:25:17,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:17,859 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:17,859 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:17,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-21 21:25:17,859 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:17,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:17,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1440335206, now seen corresponding path program 54 times [2021-05-21 21:25:17,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:17,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7059599] [2021-05-21 21:25:17,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:18,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:18,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7059599] [2021-05-21 21:25:18,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7059599] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:18,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:18,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:18,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531682944] [2021-05-21 21:25:18,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:18,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:18,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:18,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:18,055 INFO L87 Difference]: Start difference. First operand 3530 states and 11853 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:19,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:19,028 INFO L93 Difference]: Finished difference Result 3963 states and 13168 transitions. [2021-05-21 21:25:19,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 21:25:19,028 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:19,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:19,035 INFO L225 Difference]: With dead ends: 3963 [2021-05-21 21:25:19,035 INFO L226 Difference]: Without dead ends: 3896 [2021-05-21 21:25:19,035 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 645.6ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:25:19,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-05-21 21:25:19,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3566. [2021-05-21 21:25:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3566 states, 3565 states have (on average 3.3545582047685834) internal successors, (11959), 3565 states have internal predecessors, (11959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:19,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 11959 transitions. [2021-05-21 21:25:19,086 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 11959 transitions. Word has length 39 [2021-05-21 21:25:19,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:19,086 INFO L482 AbstractCegarLoop]: Abstraction has 3566 states and 11959 transitions. [2021-05-21 21:25:19,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:19,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 11959 transitions. [2021-05-21 21:25:19,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:19,090 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:19,091 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:19,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-05-21 21:25:19,091 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:19,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:19,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1135016120, now seen corresponding path program 55 times [2021-05-21 21:25:19,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:19,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791381678] [2021-05-21 21:25:19,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:19,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:19,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791381678] [2021-05-21 21:25:19,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791381678] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:19,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:19,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:19,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972619929] [2021-05-21 21:25:19,280 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:19,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:19,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:19,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:19,280 INFO L87 Difference]: Start difference. First operand 3566 states and 11959 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:20,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:20,577 INFO L93 Difference]: Finished difference Result 4048 states and 13357 transitions. [2021-05-21 21:25:20,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-21 21:25:20,578 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:20,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:20,584 INFO L225 Difference]: With dead ends: 4048 [2021-05-21 21:25:20,584 INFO L226 Difference]: Without dead ends: 4005 [2021-05-21 21:25:20,585 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 846.7ms TimeCoverageRelationStatistics Valid=283, Invalid=2797, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:25:20,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4005 states. [2021-05-21 21:25:20,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4005 to 3572. [2021-05-21 21:25:20,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3572 states, 3571 states have (on average 3.352562307476897) internal successors, (11972), 3571 states have internal predecessors, (11972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3572 states to 3572 states and 11972 transitions. [2021-05-21 21:25:20,636 INFO L78 Accepts]: Start accepts. Automaton has 3572 states and 11972 transitions. Word has length 39 [2021-05-21 21:25:20,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:20,636 INFO L482 AbstractCegarLoop]: Abstraction has 3572 states and 11972 transitions. [2021-05-21 21:25:20,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:20,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3572 states and 11972 transitions. [2021-05-21 21:25:20,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:20,641 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:20,641 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:20,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-21 21:25:20,641 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:20,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:20,641 INFO L82 PathProgramCache]: Analyzing trace with hash -645582182, now seen corresponding path program 56 times [2021-05-21 21:25:20,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:20,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724811093] [2021-05-21 21:25:20,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:20,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:20,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724811093] [2021-05-21 21:25:20,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724811093] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:20,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:20,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:20,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175018930] [2021-05-21 21:25:20,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:20,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:20,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:20,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:20,813 INFO L87 Difference]: Start difference. First operand 3572 states and 11972 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:22,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:22,100 INFO L93 Difference]: Finished difference Result 4003 states and 13253 transitions. [2021-05-21 21:25:22,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:25:22,102 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:22,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:22,108 INFO L225 Difference]: With dead ends: 4003 [2021-05-21 21:25:22,109 INFO L226 Difference]: Without dead ends: 3939 [2021-05-21 21:25:22,109 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 840.3ms TimeCoverageRelationStatistics Valid=274, Invalid=2696, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:25:22,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2021-05-21 21:25:22,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3554. [2021-05-21 21:25:22,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3574444131719674) internal successors, (11929), 3553 states have internal predecessors, (11929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:22,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11929 transitions. [2021-05-21 21:25:22,186 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11929 transitions. Word has length 39 [2021-05-21 21:25:22,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:22,186 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11929 transitions. [2021-05-21 21:25:22,186 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:22,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11929 transitions. [2021-05-21 21:25:22,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:22,190 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:22,190 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:22,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-05-21 21:25:22,191 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:22,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:22,191 INFO L82 PathProgramCache]: Analyzing trace with hash -25147782, now seen corresponding path program 57 times [2021-05-21 21:25:22,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:22,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848196995] [2021-05-21 21:25:22,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:22,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:22,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:22,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848196995] [2021-05-21 21:25:22,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848196995] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:22,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:22,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:22,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41803144] [2021-05-21 21:25:22,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:22,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:22,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:22,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:22,371 INFO L87 Difference]: Start difference. First operand 3554 states and 11929 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:23,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:23,334 INFO L93 Difference]: Finished difference Result 3963 states and 13162 transitions. [2021-05-21 21:25:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 21:25:23,334 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:23,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:23,341 INFO L225 Difference]: With dead ends: 3963 [2021-05-21 21:25:23,341 INFO L226 Difference]: Without dead ends: 3896 [2021-05-21 21:25:23,342 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 630.4ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:25:23,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-05-21 21:25:23,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3562. [2021-05-21 21:25:23,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3543948329121034) internal successors, (11945), 3561 states have internal predecessors, (11945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:23,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11945 transitions. [2021-05-21 21:25:23,396 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11945 transitions. Word has length 39 [2021-05-21 21:25:23,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:23,396 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11945 transitions. [2021-05-21 21:25:23,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:23,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11945 transitions. [2021-05-21 21:25:23,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:23,401 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:23,401 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:23,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-21 21:25:23,401 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:23,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:23,402 INFO L82 PathProgramCache]: Analyzing trace with hash -155742630, now seen corresponding path program 58 times [2021-05-21 21:25:23,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:23,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543331617] [2021-05-21 21:25:23,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:23,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:23,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:23,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543331617] [2021-05-21 21:25:23,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543331617] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:23,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:23,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:23,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605138646] [2021-05-21 21:25:23,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:23,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:23,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:23,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:23,570 INFO L87 Difference]: Start difference. First operand 3562 states and 11945 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:24,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:24,575 INFO L93 Difference]: Finished difference Result 3951 states and 13122 transitions. [2021-05-21 21:25:24,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:25:24,576 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:24,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:24,582 INFO L225 Difference]: With dead ends: 3951 [2021-05-21 21:25:24,582 INFO L226 Difference]: Without dead ends: 3888 [2021-05-21 21:25:24,583 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 643.2ms TimeCoverageRelationStatistics Valid=227, Invalid=2125, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 21:25:24,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-05-21 21:25:24,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3554. [2021-05-21 21:25:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3563186039966224) internal successors, (11925), 3553 states have internal predecessors, (11925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:24,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11925 transitions. [2021-05-21 21:25:24,634 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11925 transitions. Word has length 39 [2021-05-21 21:25:24,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:24,635 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11925 transitions. [2021-05-21 21:25:24,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:24,635 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11925 transitions. [2021-05-21 21:25:24,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:24,639 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:24,639 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:24,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-21 21:25:24,639 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:24,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:24,639 INFO L82 PathProgramCache]: Analyzing trace with hash -291421222, now seen corresponding path program 59 times [2021-05-21 21:25:24,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:24,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999085739] [2021-05-21 21:25:24,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:24,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:24,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999085739] [2021-05-21 21:25:24,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999085739] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:24,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:24,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:24,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836556672] [2021-05-21 21:25:24,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:24,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:24,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:24,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:24,812 INFO L87 Difference]: Start difference. First operand 3554 states and 11925 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:26,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:26,068 INFO L93 Difference]: Finished difference Result 4114 states and 13511 transitions. [2021-05-21 21:25:26,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-21 21:25:26,069 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:26,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:26,075 INFO L225 Difference]: With dead ends: 4114 [2021-05-21 21:25:26,075 INFO L226 Difference]: Without dead ends: 4071 [2021-05-21 21:25:26,076 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 835.5ms TimeCoverageRelationStatistics Valid=300, Invalid=3006, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 21:25:26,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2021-05-21 21:25:26,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 3562. [2021-05-21 21:25:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.3543948329121034) internal successors, (11945), 3561 states have internal predecessors, (11945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:26,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11945 transitions. [2021-05-21 21:25:26,129 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11945 transitions. Word has length 39 [2021-05-21 21:25:26,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:26,130 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11945 transitions. [2021-05-21 21:25:26,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:26,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11945 transitions. [2021-05-21 21:25:26,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:26,135 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:26,135 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:26,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-05-21 21:25:26,135 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:26,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:26,135 INFO L82 PathProgramCache]: Analyzing trace with hash -2072019524, now seen corresponding path program 60 times [2021-05-21 21:25:26,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:26,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963690009] [2021-05-21 21:25:26,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:26,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:26,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963690009] [2021-05-21 21:25:26,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963690009] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:26,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:26,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:26,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659646580] [2021-05-21 21:25:26,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:26,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:26,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:26,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:26,310 INFO L87 Difference]: Start difference. First operand 3562 states and 11945 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:27,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:27,557 INFO L93 Difference]: Finished difference Result 4102 states and 13473 transitions. [2021-05-21 21:25:27,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:25:27,559 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:27,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:27,566 INFO L225 Difference]: With dead ends: 4102 [2021-05-21 21:25:27,567 INFO L226 Difference]: Without dead ends: 4050 [2021-05-21 21:25:27,567 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 835.0ms TimeCoverageRelationStatistics Valid=292, Invalid=2900, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 21:25:27,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4050 states. [2021-05-21 21:25:27,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4050 to 3554. [2021-05-21 21:25:27,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3553 states have (on average 3.3563186039966224) internal successors, (11925), 3553 states have internal predecessors, (11925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:27,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11925 transitions. [2021-05-21 21:25:27,624 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11925 transitions. Word has length 39 [2021-05-21 21:25:27,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:27,625 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11925 transitions. [2021-05-21 21:25:27,625 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:27,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11925 transitions. [2021-05-21 21:25:27,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:27,629 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:27,629 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:27,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-05-21 21:25:27,629 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:27,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:27,630 INFO L82 PathProgramCache]: Analyzing trace with hash 627062348, now seen corresponding path program 61 times [2021-05-21 21:25:27,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:27,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947067104] [2021-05-21 21:25:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:27,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:27,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947067104] [2021-05-21 21:25:27,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947067104] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:27,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:27,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:27,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071844865] [2021-05-21 21:25:27,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:27,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:27,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:27,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:27,805 INFO L87 Difference]: Start difference. First operand 3554 states and 11925 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:28,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:28,841 INFO L93 Difference]: Finished difference Result 4079 states and 13396 transitions. [2021-05-21 21:25:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:25:28,841 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:28,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:28,848 INFO L225 Difference]: With dead ends: 4079 [2021-05-21 21:25:28,848 INFO L226 Difference]: Without dead ends: 4024 [2021-05-21 21:25:28,848 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 675.5ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:25:28,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-05-21 21:25:28,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3556. [2021-05-21 21:25:28,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.3552742616033755) internal successors, (11928), 3555 states have internal predecessors, (11928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:28,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11928 transitions. [2021-05-21 21:25:28,900 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11928 transitions. Word has length 39 [2021-05-21 21:25:28,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:28,900 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 11928 transitions. [2021-05-21 21:25:28,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:28,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11928 transitions. [2021-05-21 21:25:28,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:28,904 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:28,904 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:28,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-05-21 21:25:28,905 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:28,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:28,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1799714570, now seen corresponding path program 62 times [2021-05-21 21:25:28,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:28,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863300436] [2021-05-21 21:25:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:29,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:29,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:29,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863300436] [2021-05-21 21:25:29,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863300436] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:29,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:29,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:29,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216604218] [2021-05-21 21:25:29,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:29,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:29,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:29,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:29,108 INFO L87 Difference]: Start difference. First operand 3556 states and 11928 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:30,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:30,109 INFO L93 Difference]: Finished difference Result 4014 states and 13244 transitions. [2021-05-21 21:25:30,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 21:25:30,109 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:30,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:30,115 INFO L225 Difference]: With dead ends: 4014 [2021-05-21 21:25:30,115 INFO L226 Difference]: Without dead ends: 3968 [2021-05-21 21:25:30,116 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 631.0ms TimeCoverageRelationStatistics Valid=219, Invalid=2037, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:25:30,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2021-05-21 21:25:30,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3560. [2021-05-21 21:25:30,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 3.3537510536667603) internal successors, (11936), 3559 states have internal predecessors, (11936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:30,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11936 transitions. [2021-05-21 21:25:30,164 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11936 transitions. Word has length 39 [2021-05-21 21:25:30,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:30,164 INFO L482 AbstractCegarLoop]: Abstraction has 3560 states and 11936 transitions. [2021-05-21 21:25:30,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11936 transitions. [2021-05-21 21:25:30,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:30,168 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:30,168 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:30,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-05-21 21:25:30,169 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:30,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:30,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1552248408, now seen corresponding path program 63 times [2021-05-21 21:25:30,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:30,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909020477] [2021-05-21 21:25:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:30,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:30,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909020477] [2021-05-21 21:25:30,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909020477] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:30,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:30,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:30,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265360594] [2021-05-21 21:25:30,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:30,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:30,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:30,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:30,332 INFO L87 Difference]: Start difference. First operand 3560 states and 11936 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:31,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:31,417 INFO L93 Difference]: Finished difference Result 3980 states and 13174 transitions. [2021-05-21 21:25:31,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 21:25:31,418 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:31,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:31,424 INFO L225 Difference]: With dead ends: 3980 [2021-05-21 21:25:31,424 INFO L226 Difference]: Without dead ends: 3931 [2021-05-21 21:25:31,424 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 735.0ms TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:25:31,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-05-21 21:25:31,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3550. [2021-05-21 21:25:31,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.3572837418991264) internal successors, (11915), 3549 states have internal predecessors, (11915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:31,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11915 transitions. [2021-05-21 21:25:31,473 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11915 transitions. Word has length 39 [2021-05-21 21:25:31,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:31,474 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11915 transitions. [2021-05-21 21:25:31,474 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:31,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11915 transitions. [2021-05-21 21:25:31,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:31,478 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:31,478 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:31,478 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-05-21 21:25:31,478 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:31,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:31,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1203843366, now seen corresponding path program 64 times [2021-05-21 21:25:31,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:31,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993326568] [2021-05-21 21:25:31,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:31,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:31,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993326568] [2021-05-21 21:25:31,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993326568] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:31,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:31,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:31,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121839173] [2021-05-21 21:25:31,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:31,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:31,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:31,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:31,653 INFO L87 Difference]: Start difference. First operand 3550 states and 11915 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:32,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:32,568 INFO L93 Difference]: Finished difference Result 4021 states and 13349 transitions. [2021-05-21 21:25:32,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 21:25:32,568 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:32,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:32,575 INFO L225 Difference]: With dead ends: 4021 [2021-05-21 21:25:32,575 INFO L226 Difference]: Without dead ends: 3954 [2021-05-21 21:25:32,575 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 541.2ms TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2021-05-21 21:25:32,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2021-05-21 21:25:32,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3590. [2021-05-21 21:25:32,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 3589 states have (on average 3.3499582056283086) internal successors, (12023), 3589 states have internal predecessors, (12023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 12023 transitions. [2021-05-21 21:25:32,633 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 12023 transitions. Word has length 39 [2021-05-21 21:25:32,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:32,633 INFO L482 AbstractCegarLoop]: Abstraction has 3590 states and 12023 transitions. [2021-05-21 21:25:32,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:32,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 12023 transitions. [2021-05-21 21:25:32,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:32,637 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:32,637 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:32,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-05-21 21:25:32,637 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:32,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:32,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1334438214, now seen corresponding path program 65 times [2021-05-21 21:25:32,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:32,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203347663] [2021-05-21 21:25:32,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:32,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:32,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:32,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203347663] [2021-05-21 21:25:32,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203347663] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:32,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:32,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:32,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75244575] [2021-05-21 21:25:32,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:32,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:32,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:32,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:32,807 INFO L87 Difference]: Start difference. First operand 3590 states and 12023 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:33,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:33,778 INFO L93 Difference]: Finished difference Result 4009 states and 13309 transitions. [2021-05-21 21:25:33,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-21 21:25:33,778 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:33,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:33,785 INFO L225 Difference]: With dead ends: 4009 [2021-05-21 21:25:33,785 INFO L226 Difference]: Without dead ends: 3946 [2021-05-21 21:25:33,785 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 583.7ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-05-21 21:25:33,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2021-05-21 21:25:33,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3582. [2021-05-21 21:25:33,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 3.3507400167550965) internal successors, (11999), 3581 states have internal predecessors, (11999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:33,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 11999 transitions. [2021-05-21 21:25:33,835 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 11999 transitions. Word has length 39 [2021-05-21 21:25:33,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:33,835 INFO L482 AbstractCegarLoop]: Abstraction has 3582 states and 11999 transitions. [2021-05-21 21:25:33,835 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:33,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 11999 transitions. [2021-05-21 21:25:33,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:33,839 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:33,839 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:33,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-05-21 21:25:33,840 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:33,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:33,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1864338662, now seen corresponding path program 66 times [2021-05-21 21:25:33,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:33,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720136255] [2021-05-21 21:25:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:34,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:34,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:34,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720136255] [2021-05-21 21:25:34,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720136255] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:34,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:34,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:34,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438249168] [2021-05-21 21:25:34,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:34,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:34,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:34,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:34,007 INFO L87 Difference]: Start difference. First operand 3582 states and 11999 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:34,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:34,940 INFO L93 Difference]: Finished difference Result 4021 states and 13337 transitions. [2021-05-21 21:25:34,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 21:25:34,941 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:34,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:34,947 INFO L225 Difference]: With dead ends: 4021 [2021-05-21 21:25:34,947 INFO L226 Difference]: Without dead ends: 3898 [2021-05-21 21:25:34,947 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 538.5ms TimeCoverageRelationStatistics Valid=182, Invalid=1710, Unknown=0, NotChecked=0, Total=1892 [2021-05-21 21:25:34,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2021-05-21 21:25:34,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 3550. [2021-05-21 21:25:34,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.352775429698507) internal successors, (11899), 3549 states have internal predecessors, (11899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:34,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11899 transitions. [2021-05-21 21:25:34,996 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11899 transitions. Word has length 39 [2021-05-21 21:25:34,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:34,996 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11899 transitions. [2021-05-21 21:25:34,996 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:34,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11899 transitions. [2021-05-21 21:25:35,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:35,000 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:35,000 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:35,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-05-21 21:25:35,000 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:35,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:35,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1712217464, now seen corresponding path program 67 times [2021-05-21 21:25:35,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:35,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018138890] [2021-05-21 21:25:35,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:35,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:35,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018138890] [2021-05-21 21:25:35,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018138890] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:35,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:35,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:35,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088432639] [2021-05-21 21:25:35,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:35,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:35,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:35,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:35,196 INFO L87 Difference]: Start difference. First operand 3550 states and 11899 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:36,950 INFO L93 Difference]: Finished difference Result 5827 states and 19628 transitions. [2021-05-21 21:25:36,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-21 21:25:36,951 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:36,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:36,960 INFO L225 Difference]: With dead ends: 5827 [2021-05-21 21:25:36,961 INFO L226 Difference]: Without dead ends: 5741 [2021-05-21 21:25:36,961 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 1037.9ms TimeCoverageRelationStatistics Valid=346, Invalid=3814, Unknown=0, NotChecked=0, Total=4160 [2021-05-21 21:25:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5741 states. [2021-05-21 21:25:37,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5741 to 3628. [2021-05-21 21:25:37,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 3627 states have (on average 3.3493245106148333) internal successors, (12148), 3627 states have internal predecessors, (12148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:37,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 12148 transitions. [2021-05-21 21:25:37,021 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 12148 transitions. Word has length 39 [2021-05-21 21:25:37,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:37,021 INFO L482 AbstractCegarLoop]: Abstraction has 3628 states and 12148 transitions. [2021-05-21 21:25:37,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:37,021 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 12148 transitions. [2021-05-21 21:25:37,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:37,025 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:37,025 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:37,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-05-21 21:25:37,025 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:37,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:37,025 INFO L82 PathProgramCache]: Analyzing trace with hash -68380838, now seen corresponding path program 68 times [2021-05-21 21:25:37,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:37,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861896353] [2021-05-21 21:25:37,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:37,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:37,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:37,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861896353] [2021-05-21 21:25:37,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861896353] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:37,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:37,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:37,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427639998] [2021-05-21 21:25:37,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:37,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:37,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:37,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:37,199 INFO L87 Difference]: Start difference. First operand 3628 states and 12148 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:39,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:39,180 INFO L93 Difference]: Finished difference Result 6643 states and 22454 transitions. [2021-05-21 21:25:39,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-21 21:25:39,181 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:39,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:39,192 INFO L225 Difference]: With dead ends: 6643 [2021-05-21 21:25:39,192 INFO L226 Difference]: Without dead ends: 6539 [2021-05-21 21:25:39,193 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1381 ImplicationChecksByTransitivity, 1106.7ms TimeCoverageRelationStatistics Valid=389, Invalid=4581, Unknown=0, NotChecked=0, Total=4970 [2021-05-21 21:25:39,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2021-05-21 21:25:39,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 3598. [2021-05-21 21:25:39,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 3.349179872115652) internal successors, (12047), 3597 states have internal predecessors, (12047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12047 transitions. [2021-05-21 21:25:39,266 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12047 transitions. Word has length 39 [2021-05-21 21:25:39,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:39,266 INFO L482 AbstractCegarLoop]: Abstraction has 3598 states and 12047 transitions. [2021-05-21 21:25:39,266 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12047 transitions. [2021-05-21 21:25:39,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:39,270 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:39,270 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:39,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-05-21 21:25:39,270 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:39,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:39,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1664266262, now seen corresponding path program 69 times [2021-05-21 21:25:39,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:39,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970699562] [2021-05-21 21:25:39,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:39,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:39,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970699562] [2021-05-21 21:25:39,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970699562] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:39,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:39,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:39,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695544080] [2021-05-21 21:25:39,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:39,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:39,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:39,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:39,461 INFO L87 Difference]: Start difference. First operand 3598 states and 12047 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:40,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:40,807 INFO L93 Difference]: Finished difference Result 5563 states and 18662 transitions. [2021-05-21 21:25:40,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:25:40,807 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:40,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:40,816 INFO L225 Difference]: With dead ends: 5563 [2021-05-21 21:25:40,816 INFO L226 Difference]: Without dead ends: 5508 [2021-05-21 21:25:40,816 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 741.2ms TimeCoverageRelationStatistics Valid=267, Invalid=2703, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:25:40,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-05-21 21:25:40,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 3626. [2021-05-21 21:25:40,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.3481379310344828) internal successors, (12137), 3625 states have internal predecessors, (12137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:40,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12137 transitions. [2021-05-21 21:25:40,875 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12137 transitions. Word has length 39 [2021-05-21 21:25:40,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:40,875 INFO L482 AbstractCegarLoop]: Abstraction has 3626 states and 12137 transitions. [2021-05-21 21:25:40,875 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:40,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12137 transitions. [2021-05-21 21:25:40,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:40,880 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:40,880 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:40,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-05-21 21:25:40,880 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:40,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:40,880 INFO L82 PathProgramCache]: Analyzing trace with hash -491614040, now seen corresponding path program 70 times [2021-05-21 21:25:40,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:40,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448250739] [2021-05-21 21:25:40,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:41,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:41,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:41,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448250739] [2021-05-21 21:25:41,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448250739] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:41,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:41,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:41,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759594720] [2021-05-21 21:25:41,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:41,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:41,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:41,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:41,041 INFO L87 Difference]: Start difference. First operand 3626 states and 12137 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:42,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:42,626 INFO L93 Difference]: Finished difference Result 6424 states and 21596 transitions. [2021-05-21 21:25:42,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-21 21:25:42,626 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:42,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:42,638 INFO L225 Difference]: With dead ends: 6424 [2021-05-21 21:25:42,638 INFO L226 Difference]: Without dead ends: 6364 [2021-05-21 21:25:42,638 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 834.9ms TimeCoverageRelationStatistics Valid=298, Invalid=3242, Unknown=0, NotChecked=0, Total=3540 [2021-05-21 21:25:42,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2021-05-21 21:25:42,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 3624. [2021-05-21 21:25:42,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 3.348606127518631) internal successors, (12132), 3623 states have internal predecessors, (12132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:42,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 12132 transitions. [2021-05-21 21:25:42,713 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 12132 transitions. Word has length 39 [2021-05-21 21:25:42,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:42,713 INFO L482 AbstractCegarLoop]: Abstraction has 3624 states and 12132 transitions. [2021-05-21 21:25:42,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:42,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 12132 transitions. [2021-05-21 21:25:42,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:42,718 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:42,718 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:42,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-05-21 21:25:42,718 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:42,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:42,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1925949654, now seen corresponding path program 71 times [2021-05-21 21:25:42,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:42,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435323463] [2021-05-21 21:25:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:42,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:42,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:42,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435323463] [2021-05-21 21:25:42,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435323463] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:42,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:42,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:42,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783659053] [2021-05-21 21:25:42,886 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:42,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:42,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:42,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:42,886 INFO L87 Difference]: Start difference. First operand 3624 states and 12132 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:44,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:44,155 INFO L93 Difference]: Finished difference Result 5514 states and 18559 transitions. [2021-05-21 21:25:44,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:25:44,155 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:44,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:44,164 INFO L225 Difference]: With dead ends: 5514 [2021-05-21 21:25:44,165 INFO L226 Difference]: Without dead ends: 5423 [2021-05-21 21:25:44,165 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 650.5ms TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:25:44,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2021-05-21 21:25:44,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 3624. [2021-05-21 21:25:44,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3624 states, 3623 states have (on average 3.346950041402153) internal successors, (12126), 3623 states have internal predecessors, (12126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 12126 transitions. [2021-05-21 21:25:44,225 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 12126 transitions. Word has length 39 [2021-05-21 21:25:44,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:44,225 INFO L482 AbstractCegarLoop]: Abstraction has 3624 states and 12126 transitions. [2021-05-21 21:25:44,225 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:44,225 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 12126 transitions. [2021-05-21 21:25:44,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:44,230 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:44,230 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:44,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-05-21 21:25:44,230 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:44,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:44,230 INFO L82 PathProgramCache]: Analyzing trace with hash 423467448, now seen corresponding path program 72 times [2021-05-21 21:25:44,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:44,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601142950] [2021-05-21 21:25:44,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:44,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:44,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:44,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601142950] [2021-05-21 21:25:44,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601142950] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:44,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:44,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:44,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049214856] [2021-05-21 21:25:44,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:44,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:44,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:44,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:44,394 INFO L87 Difference]: Start difference. First operand 3624 states and 12126 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:45,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:45,817 INFO L93 Difference]: Finished difference Result 6327 states and 21361 transitions. [2021-05-21 21:25:45,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:25:45,817 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:45,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:45,827 INFO L225 Difference]: With dead ends: 6327 [2021-05-21 21:25:45,827 INFO L226 Difference]: Without dead ends: 6211 [2021-05-21 21:25:45,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 722.7ms TimeCoverageRelationStatistics Valid=257, Invalid=2713, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:25:45,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6211 states. [2021-05-21 21:25:45,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6211 to 3586. [2021-05-21 21:25:45,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 3585 states have (on average 3.3531380753138076) internal successors, (12021), 3585 states have internal predecessors, (12021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:45,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 12021 transitions. [2021-05-21 21:25:45,890 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 12021 transitions. Word has length 39 [2021-05-21 21:25:45,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:45,890 INFO L482 AbstractCegarLoop]: Abstraction has 3586 states and 12021 transitions. [2021-05-21 21:25:45,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:45,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 12021 transitions. [2021-05-21 21:25:45,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:45,894 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:45,895 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:45,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-05-21 21:25:45,895 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:45,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:45,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1052700712, now seen corresponding path program 73 times [2021-05-21 21:25:45,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:45,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532763211] [2021-05-21 21:25:45,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:46,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:46,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:46,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532763211] [2021-05-21 21:25:46,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532763211] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:46,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:46,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:46,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846309511] [2021-05-21 21:25:46,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:46,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:46,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:46,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:46,082 INFO L87 Difference]: Start difference. First operand 3586 states and 12021 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:46,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:46,846 INFO L93 Difference]: Finished difference Result 3853 states and 12803 transitions. [2021-05-21 21:25:46,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-21 21:25:46,846 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:46,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:46,852 INFO L225 Difference]: With dead ends: 3853 [2021-05-21 21:25:46,852 INFO L226 Difference]: Without dead ends: 3786 [2021-05-21 21:25:46,852 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 514.8ms TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-05-21 21:25:46,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-05-21 21:25:46,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3634. [2021-05-21 21:25:46,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 3.3440682631434075) internal successors, (12149), 3633 states have internal predecessors, (12149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:46,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 12149 transitions. [2021-05-21 21:25:46,901 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 12149 transitions. Word has length 39 [2021-05-21 21:25:46,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:46,901 INFO L482 AbstractCegarLoop]: Abstraction has 3634 states and 12149 transitions. [2021-05-21 21:25:46,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:46,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 12149 transitions. [2021-05-21 21:25:46,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:46,905 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:46,905 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:46,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-05-21 21:25:46,906 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:46,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:46,906 INFO L82 PathProgramCache]: Analyzing trace with hash 880557494, now seen corresponding path program 74 times [2021-05-21 21:25:46,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:46,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788298675] [2021-05-21 21:25:46,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:47,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:47,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788298675] [2021-05-21 21:25:47,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788298675] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:47,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:47,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:47,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364985660] [2021-05-21 21:25:47,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:47,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:47,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:47,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:47,077 INFO L87 Difference]: Start difference. First operand 3634 states and 12149 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:47,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:47,852 INFO L93 Difference]: Finished difference Result 3841 states and 12763 transitions. [2021-05-21 21:25:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-21 21:25:47,852 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:47,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:47,858 INFO L225 Difference]: With dead ends: 3841 [2021-05-21 21:25:47,858 INFO L226 Difference]: Without dead ends: 3778 [2021-05-21 21:25:47,858 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 505.8ms TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-05-21 21:25:47,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2021-05-21 21:25:47,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3626. [2021-05-21 21:25:47,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.3448275862068964) internal successors, (12125), 3625 states have internal predecessors, (12125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:47,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12125 transitions. [2021-05-21 21:25:47,908 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12125 transitions. Word has length 39 [2021-05-21 21:25:47,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:47,908 INFO L482 AbstractCegarLoop]: Abstraction has 3626 states and 12125 transitions. [2021-05-21 21:25:47,908 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12125 transitions. [2021-05-21 21:25:47,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:47,912 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:47,912 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:47,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-05-21 21:25:47,912 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:47,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:47,912 INFO L82 PathProgramCache]: Analyzing trace with hash -922276662, now seen corresponding path program 75 times [2021-05-21 21:25:47,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:47,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144193894] [2021-05-21 21:25:47,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:48,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:48,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:48,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144193894] [2021-05-21 21:25:48,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144193894] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:48,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:48,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:48,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227966117] [2021-05-21 21:25:48,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:48,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:48,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:48,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:48,108 INFO L87 Difference]: Start difference. First operand 3626 states and 12125 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:48,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:48,899 INFO L93 Difference]: Finished difference Result 3841 states and 12755 transitions. [2021-05-21 21:25:48,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-21 21:25:48,900 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:48,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:48,906 INFO L225 Difference]: With dead ends: 3841 [2021-05-21 21:25:48,906 INFO L226 Difference]: Without dead ends: 3698 [2021-05-21 21:25:48,906 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 518.8ms TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-05-21 21:25:48,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-05-21 21:25:48,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3574. [2021-05-21 21:25:48,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.355443604813882) internal successors, (11989), 3573 states have internal predecessors, (11989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:48,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11989 transitions. [2021-05-21 21:25:48,954 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11989 transitions. Word has length 39 [2021-05-21 21:25:48,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:48,954 INFO L482 AbstractCegarLoop]: Abstraction has 3574 states and 11989 transitions. [2021-05-21 21:25:48,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:48,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11989 transitions. [2021-05-21 21:25:48,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:48,958 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:48,958 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:48,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-05-21 21:25:48,958 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:48,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:48,958 INFO L82 PathProgramCache]: Analyzing trace with hash -235569416, now seen corresponding path program 76 times [2021-05-21 21:25:48,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:48,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872302239] [2021-05-21 21:25:48,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:49,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:49,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872302239] [2021-05-21 21:25:49,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872302239] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:49,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:49,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:49,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986057485] [2021-05-21 21:25:49,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:49,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:49,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:49,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:49,121 INFO L87 Difference]: Start difference. First operand 3574 states and 11989 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:50,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:50,012 INFO L93 Difference]: Finished difference Result 3979 states and 13198 transitions. [2021-05-21 21:25:50,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 21:25:50,013 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:50,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:50,019 INFO L225 Difference]: With dead ends: 3979 [2021-05-21 21:25:50,019 INFO L226 Difference]: Without dead ends: 3912 [2021-05-21 21:25:50,019 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 574.4ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:25:50,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2021-05-21 21:25:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3622. [2021-05-21 21:25:50,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3621 states have (on average 3.3512841756420877) internal successors, (12135), 3621 states have internal predecessors, (12135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 12135 transitions. [2021-05-21 21:25:50,068 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 12135 transitions. Word has length 39 [2021-05-21 21:25:50,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:50,068 INFO L482 AbstractCegarLoop]: Abstraction has 3622 states and 12135 transitions. [2021-05-21 21:25:50,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:50,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 12135 transitions. [2021-05-21 21:25:50,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:50,072 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:50,072 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:50,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-05-21 21:25:50,072 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:50,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:50,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1955185386, now seen corresponding path program 77 times [2021-05-21 21:25:50,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:50,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237557074] [2021-05-21 21:25:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:50,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:50,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237557074] [2021-05-21 21:25:50,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237557074] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:50,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:50,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:50,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000528213] [2021-05-21 21:25:50,271 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:50,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:50,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:50,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:50,272 INFO L87 Difference]: Start difference. First operand 3622 states and 12135 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:51,429 INFO L93 Difference]: Finished difference Result 4064 states and 13387 transitions. [2021-05-21 21:25:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:25:51,429 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:51,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:51,435 INFO L225 Difference]: With dead ends: 4064 [2021-05-21 21:25:51,435 INFO L226 Difference]: Without dead ends: 4021 [2021-05-21 21:25:51,436 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 779.9ms TimeCoverageRelationStatistics Valid=263, Invalid=2599, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 21:25:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2021-05-21 21:25:51,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 3628. [2021-05-21 21:25:51,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 3627 states have (on average 3.3493245106148333) internal successors, (12148), 3627 states have internal predecessors, (12148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 12148 transitions. [2021-05-21 21:25:51,485 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 12148 transitions. Word has length 39 [2021-05-21 21:25:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:51,486 INFO L482 AbstractCegarLoop]: Abstraction has 3628 states and 12148 transitions. [2021-05-21 21:25:51,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:51,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 12148 transitions. [2021-05-21 21:25:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:51,489 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:51,490 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:51,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-05-21 21:25:51,490 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:51,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:51,490 INFO L82 PathProgramCache]: Analyzing trace with hash 559183608, now seen corresponding path program 78 times [2021-05-21 21:25:51,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:51,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026610338] [2021-05-21 21:25:51,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:51,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:51,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:51,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026610338] [2021-05-21 21:25:51,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026610338] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:51,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:51,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:51,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966624763] [2021-05-21 21:25:51,649 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:51,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:51,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:51,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:51,649 INFO L87 Difference]: Start difference. First operand 3628 states and 12148 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:52,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:52,806 INFO L93 Difference]: Finished difference Result 4019 states and 13283 transitions. [2021-05-21 21:25:52,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 21:25:52,807 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:52,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:52,813 INFO L225 Difference]: With dead ends: 4019 [2021-05-21 21:25:52,813 INFO L226 Difference]: Without dead ends: 3955 [2021-05-21 21:25:52,814 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 741.3ms TimeCoverageRelationStatistics Valid=254, Invalid=2502, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 21:25:52,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-05-21 21:25:52,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3610. [2021-05-21 21:25:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.3541147132169575) internal successors, (12105), 3609 states have internal predecessors, (12105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:52,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12105 transitions. [2021-05-21 21:25:52,867 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12105 transitions. Word has length 39 [2021-05-21 21:25:52,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:52,867 INFO L482 AbstractCegarLoop]: Abstraction has 3610 states and 12105 transitions. [2021-05-21 21:25:52,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:52,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12105 transitions. [2021-05-21 21:25:52,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:52,871 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:52,871 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:52,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-05-21 21:25:52,871 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:52,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:52,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1179618008, now seen corresponding path program 79 times [2021-05-21 21:25:52,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:52,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033563302] [2021-05-21 21:25:52,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:53,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:53,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033563302] [2021-05-21 21:25:53,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033563302] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:53,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:53,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:53,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714450191] [2021-05-21 21:25:53,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:53,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:53,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:53,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:53,034 INFO L87 Difference]: Start difference. First operand 3610 states and 12105 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:53,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:53,945 INFO L93 Difference]: Finished difference Result 3979 states and 13192 transitions. [2021-05-21 21:25:53,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-21 21:25:53,945 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:53,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:53,951 INFO L225 Difference]: With dead ends: 3979 [2021-05-21 21:25:53,951 INFO L226 Difference]: Without dead ends: 3912 [2021-05-21 21:25:53,952 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 570.1ms TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:25:53,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2021-05-21 21:25:53,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3618. [2021-05-21 21:25:53,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 3617 states have (on average 3.351119712468897) internal successors, (12121), 3617 states have internal predecessors, (12121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:54,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 12121 transitions. [2021-05-21 21:25:54,002 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 12121 transitions. Word has length 39 [2021-05-21 21:25:54,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:54,002 INFO L482 AbstractCegarLoop]: Abstraction has 3618 states and 12121 transitions. [2021-05-21 21:25:54,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:54,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 12121 transitions. [2021-05-21 21:25:54,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:54,006 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:54,007 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:54,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-05-21 21:25:54,007 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:54,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:54,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1049023160, now seen corresponding path program 80 times [2021-05-21 21:25:54,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:54,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796460514] [2021-05-21 21:25:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:54,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:54,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:54,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796460514] [2021-05-21 21:25:54,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796460514] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:54,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:54,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:54,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971725669] [2021-05-21 21:25:54,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:54,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:54,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:54,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:54,172 INFO L87 Difference]: Start difference. First operand 3618 states and 12121 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:55,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:55,105 INFO L93 Difference]: Finished difference Result 3967 states and 13152 transitions. [2021-05-21 21:25:55,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 21:25:55,105 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:55,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:55,111 INFO L225 Difference]: With dead ends: 3967 [2021-05-21 21:25:55,112 INFO L226 Difference]: Without dead ends: 3904 [2021-05-21 21:25:55,112 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 577.9ms TimeCoverageRelationStatistics Valid=208, Invalid=1954, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:25:55,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-05-21 21:25:55,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3610. [2021-05-21 21:25:55,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.353006372956498) internal successors, (12101), 3609 states have internal predecessors, (12101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:55,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12101 transitions. [2021-05-21 21:25:55,161 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12101 transitions. Word has length 39 [2021-05-21 21:25:55,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:55,161 INFO L482 AbstractCegarLoop]: Abstraction has 3610 states and 12101 transitions. [2021-05-21 21:25:55,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:55,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12101 transitions. [2021-05-21 21:25:55,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:55,165 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:55,165 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:55,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-05-21 21:25:55,166 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:55,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:55,166 INFO L82 PathProgramCache]: Analyzing trace with hash 913344568, now seen corresponding path program 81 times [2021-05-21 21:25:55,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:55,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972031866] [2021-05-21 21:25:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:55,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:55,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972031866] [2021-05-21 21:25:55,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972031866] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:55,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:55,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:55,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007669250] [2021-05-21 21:25:55,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:55,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:55,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:55,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:55,328 INFO L87 Difference]: Start difference. First operand 3610 states and 12101 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:56,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:56,547 INFO L93 Difference]: Finished difference Result 4130 states and 13541 transitions. [2021-05-21 21:25:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-21 21:25:56,547 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:56,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:56,553 INFO L225 Difference]: With dead ends: 4130 [2021-05-21 21:25:56,553 INFO L226 Difference]: Without dead ends: 4087 [2021-05-21 21:25:56,554 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 817.1ms TimeCoverageRelationStatistics Valid=281, Invalid=2799, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:25:56,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4087 states. [2021-05-21 21:25:56,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4087 to 3618. [2021-05-21 21:25:56,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3618 states, 3617 states have (on average 3.351119712468897) internal successors, (12121), 3617 states have internal predecessors, (12121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:56,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 12121 transitions. [2021-05-21 21:25:56,603 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 12121 transitions. Word has length 39 [2021-05-21 21:25:56,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:56,603 INFO L482 AbstractCegarLoop]: Abstraction has 3618 states and 12121 transitions. [2021-05-21 21:25:56,603 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:56,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 12121 transitions. [2021-05-21 21:25:56,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:56,607 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:56,607 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:56,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-05-21 21:25:56,607 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:56,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:56,608 INFO L82 PathProgramCache]: Analyzing trace with hash -867253734, now seen corresponding path program 82 times [2021-05-21 21:25:56,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:56,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081790235] [2021-05-21 21:25:56,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:56,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:56,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081790235] [2021-05-21 21:25:56,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081790235] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:56,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:56,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:56,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984067264] [2021-05-21 21:25:56,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:56,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:56,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:56,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:56,770 INFO L87 Difference]: Start difference. First operand 3618 states and 12121 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:57,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:57,935 INFO L93 Difference]: Finished difference Result 4118 states and 13503 transitions. [2021-05-21 21:25:57,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:25:57,935 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:57,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:57,942 INFO L225 Difference]: With dead ends: 4118 [2021-05-21 21:25:57,942 INFO L226 Difference]: Without dead ends: 4066 [2021-05-21 21:25:57,942 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 770.1ms TimeCoverageRelationStatistics Valid=273, Invalid=2697, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:25:57,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4066 states. [2021-05-21 21:25:57,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4066 to 3610. [2021-05-21 21:25:57,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.353006372956498) internal successors, (12101), 3609 states have internal predecessors, (12101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:57,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12101 transitions. [2021-05-21 21:25:57,992 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12101 transitions. Word has length 39 [2021-05-21 21:25:57,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:57,992 INFO L482 AbstractCegarLoop]: Abstraction has 3610 states and 12101 transitions. [2021-05-21 21:25:57,992 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:57,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12101 transitions. [2021-05-21 21:25:57,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:57,996 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:57,996 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:57,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-05-21 21:25:57,996 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:57,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:57,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1831828138, now seen corresponding path program 83 times [2021-05-21 21:25:57,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:57,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662123241] [2021-05-21 21:25:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:58,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:58,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662123241] [2021-05-21 21:25:58,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662123241] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:58,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:58,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:58,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544367258] [2021-05-21 21:25:58,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:58,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:58,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:58,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:58,156 INFO L87 Difference]: Start difference. First operand 3610 states and 12101 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:59,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:25:59,140 INFO L93 Difference]: Finished difference Result 4095 states and 13426 transitions. [2021-05-21 21:25:59,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 21:25:59,140 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:25:59,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:25:59,146 INFO L225 Difference]: With dead ends: 4095 [2021-05-21 21:25:59,146 INFO L226 Difference]: Without dead ends: 4040 [2021-05-21 21:25:59,146 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 612.2ms TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 21:25:59,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-05-21 21:25:59,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3612. [2021-05-21 21:25:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 3.3519800609249515) internal successors, (12104), 3611 states have internal predecessors, (12104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:59,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12104 transitions. [2021-05-21 21:25:59,196 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12104 transitions. Word has length 39 [2021-05-21 21:25:59,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:25:59,196 INFO L482 AbstractCegarLoop]: Abstraction has 3612 states and 12104 transitions. [2021-05-21 21:25:59,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:25:59,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12104 transitions. [2021-05-21 21:25:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:25:59,200 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:25:59,200 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:25:59,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-05-21 21:25:59,200 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:25:59,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:25:59,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1290486936, now seen corresponding path program 84 times [2021-05-21 21:25:59,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:25:59,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531641845] [2021-05-21 21:25:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:25:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:25:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:25:59,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:25:59,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531641845] [2021-05-21 21:25:59,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531641845] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:25:59,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:25:59,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:25:59,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393773745] [2021-05-21 21:25:59,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:25:59,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:25:59,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:25:59,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:25:59,360 INFO L87 Difference]: Start difference. First operand 3612 states and 12104 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:00,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:00,241 INFO L93 Difference]: Finished difference Result 4030 states and 13274 transitions. [2021-05-21 21:26:00,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-21 21:26:00,241 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:00,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:00,248 INFO L225 Difference]: With dead ends: 4030 [2021-05-21 21:26:00,248 INFO L226 Difference]: Without dead ends: 3984 [2021-05-21 21:26:00,248 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 563.1ms TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:26:00,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-05-21 21:26:00,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3616. [2021-05-21 21:26:00,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3615 states have (on average 3.350484094052559) internal successors, (12112), 3615 states have internal predecessors, (12112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:00,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 12112 transitions. [2021-05-21 21:26:00,297 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 12112 transitions. Word has length 39 [2021-05-21 21:26:00,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:00,298 INFO L482 AbstractCegarLoop]: Abstraction has 3616 states and 12112 transitions. [2021-05-21 21:26:00,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:00,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 12112 transitions. [2021-05-21 21:26:00,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:00,302 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:00,302 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:00,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-05-21 21:26:00,302 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:00,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:00,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1537953098, now seen corresponding path program 85 times [2021-05-21 21:26:00,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:00,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531819464] [2021-05-21 21:26:00,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:00,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:00,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:00,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531819464] [2021-05-21 21:26:00,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531819464] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:00,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:00,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:26:00,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997857925] [2021-05-21 21:26:00,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:26:00,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:00,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:26:00,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:26:00,472 INFO L87 Difference]: Start difference. First operand 3616 states and 12112 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:01,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:01,402 INFO L93 Difference]: Finished difference Result 3990 states and 13185 transitions. [2021-05-21 21:26:01,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-21 21:26:01,402 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:01,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:01,408 INFO L225 Difference]: With dead ends: 3990 [2021-05-21 21:26:01,408 INFO L226 Difference]: Without dead ends: 3941 [2021-05-21 21:26:01,408 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 615.5ms TimeCoverageRelationStatistics Valid=204, Invalid=1866, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:26:01,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2021-05-21 21:26:01,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3606. [2021-05-21 21:26:01,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.3539528432732317) internal successors, (12091), 3605 states have internal predecessors, (12091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:01,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12091 transitions. [2021-05-21 21:26:01,458 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12091 transitions. Word has length 39 [2021-05-21 21:26:01,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:01,458 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 12091 transitions. [2021-05-21 21:26:01,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:01,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12091 transitions. [2021-05-21 21:26:01,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:01,462 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:01,462 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:01,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-05-21 21:26:01,462 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:01,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:01,462 INFO L82 PathProgramCache]: Analyzing trace with hash 922424, now seen corresponding path program 86 times [2021-05-21 21:26:01,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:01,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539813092] [2021-05-21 21:26:01,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:01,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:01,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:01,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539813092] [2021-05-21 21:26:01,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539813092] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:01,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:01,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:26:01,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097210730] [2021-05-21 21:26:01,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:26:01,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:01,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:26:01,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:26:01,625 INFO L87 Difference]: Start difference. First operand 3606 states and 12091 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:02,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:02,474 INFO L93 Difference]: Finished difference Result 4037 states and 13379 transitions. [2021-05-21 21:26:02,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-21 21:26:02,475 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:02,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:02,481 INFO L225 Difference]: With dead ends: 4037 [2021-05-21 21:26:02,481 INFO L226 Difference]: Without dead ends: 3970 [2021-05-21 21:26:02,481 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 498.4ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-05-21 21:26:02,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2021-05-21 21:26:02,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3646. [2021-05-21 21:26:02,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3467764060356653) internal successors, (12199), 3645 states have internal predecessors, (12199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:02,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12199 transitions. [2021-05-21 21:26:02,530 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12199 transitions. Word has length 39 [2021-05-21 21:26:02,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:02,531 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12199 transitions. [2021-05-21 21:26:02,531 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:02,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12199 transitions. [2021-05-21 21:26:02,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:02,535 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:02,535 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:02,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-05-21 21:26:02,535 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:02,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:02,535 INFO L82 PathProgramCache]: Analyzing trace with hash -129672424, now seen corresponding path program 87 times [2021-05-21 21:26:02,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:02,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028922844] [2021-05-21 21:26:02,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:02,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:02,723 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:02,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028922844] [2021-05-21 21:26:02,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028922844] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:02,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:02,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:26:02,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627421206] [2021-05-21 21:26:02,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:26:02,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:02,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:26:02,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:26:02,723 INFO L87 Difference]: Start difference. First operand 3646 states and 12199 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:03,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:03,581 INFO L93 Difference]: Finished difference Result 4025 states and 13339 transitions. [2021-05-21 21:26:03,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-21 21:26:03,581 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:03,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:03,588 INFO L225 Difference]: With dead ends: 4025 [2021-05-21 21:26:03,588 INFO L226 Difference]: Without dead ends: 3962 [2021-05-21 21:26:03,588 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 528.1ms TimeCoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2021-05-21 21:26:03,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2021-05-21 21:26:03,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3638. [2021-05-21 21:26:03,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.3475391806433876) internal successors, (12175), 3637 states have internal predecessors, (12175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:03,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12175 transitions. [2021-05-21 21:26:03,641 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12175 transitions. Word has length 39 [2021-05-21 21:26:03,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:03,641 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12175 transitions. [2021-05-21 21:26:03,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:03,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12175 transitions. [2021-05-21 21:26:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:03,645 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:03,645 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:03,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-05-21 21:26:03,645 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:03,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:03,646 INFO L82 PathProgramCache]: Analyzing trace with hash -659572872, now seen corresponding path program 88 times [2021-05-21 21:26:03,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:03,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629863989] [2021-05-21 21:26:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:03,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:03,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629863989] [2021-05-21 21:26:03,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629863989] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:03,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:03,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:26:03,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713260665] [2021-05-21 21:26:03,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:26:03,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:03,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:26:03,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:26:03,806 INFO L87 Difference]: Start difference. First operand 3638 states and 12175 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:04,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:04,681 INFO L93 Difference]: Finished difference Result 4037 states and 13367 transitions. [2021-05-21 21:26:04,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-21 21:26:04,682 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:04,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:04,688 INFO L225 Difference]: With dead ends: 4037 [2021-05-21 21:26:04,688 INFO L226 Difference]: Without dead ends: 3914 [2021-05-21 21:26:04,689 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 504.1ms TimeCoverageRelationStatistics Valid=165, Invalid=1557, Unknown=0, NotChecked=0, Total=1722 [2021-05-21 21:26:04,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2021-05-21 21:26:04,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3606. [2021-05-21 21:26:04,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.349514563106796) internal successors, (12075), 3605 states have internal predecessors, (12075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:04,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12075 transitions. [2021-05-21 21:26:04,751 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12075 transitions. Word has length 39 [2021-05-21 21:26:04,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:04,751 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 12075 transitions. [2021-05-21 21:26:04,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:04,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12075 transitions. [2021-05-21 21:26:04,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:04,755 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:04,755 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:04,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-05-21 21:26:04,755 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:04,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:04,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1377984042, now seen corresponding path program 89 times [2021-05-21 21:26:04,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:04,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110265090] [2021-05-21 21:26:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:04,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:04,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:04,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110265090] [2021-05-21 21:26:04,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110265090] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:04,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:04,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:26:04,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886967530] [2021-05-21 21:26:04,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:26:04,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:04,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:26:04,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:26:04,927 INFO L87 Difference]: Start difference. First operand 3606 states and 12075 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:06,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:06,365 INFO L93 Difference]: Finished difference Result 5612 states and 19007 transitions. [2021-05-21 21:26:06,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:26:06,365 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:06,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:06,374 INFO L225 Difference]: With dead ends: 5612 [2021-05-21 21:26:06,375 INFO L226 Difference]: Without dead ends: 5569 [2021-05-21 21:26:06,375 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 812.0ms TimeCoverageRelationStatistics Valid=279, Invalid=2801, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:26:06,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5569 states. [2021-05-21 21:26:06,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5569 to 3620. [2021-05-21 21:26:06,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3619 states have (on average 3.3478861563967945) internal successors, (12116), 3619 states have internal predecessors, (12116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:06,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 12116 transitions. [2021-05-21 21:26:06,435 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 12116 transitions. Word has length 39 [2021-05-21 21:26:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:06,435 INFO L482 AbstractCegarLoop]: Abstraction has 3620 states and 12116 transitions. [2021-05-21 21:26:06,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:06,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 12116 transitions. [2021-05-21 21:26:06,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:06,439 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:06,439 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:06,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-05-21 21:26:06,439 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:06,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:06,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1136384952, now seen corresponding path program 90 times [2021-05-21 21:26:06,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:06,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683222788] [2021-05-21 21:26:06,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:06,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:06,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683222788] [2021-05-21 21:26:06,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683222788] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:06,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:06,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:26:06,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945008423] [2021-05-21 21:26:06,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:26:06,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:06,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:26:06,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:26:06,599 INFO L87 Difference]: Start difference. First operand 3620 states and 12116 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:08,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:08,342 INFO L93 Difference]: Finished difference Result 6473 states and 21937 transitions. [2021-05-21 21:26:08,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-21 21:26:08,342 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:08,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:08,354 INFO L225 Difference]: With dead ends: 6473 [2021-05-21 21:26:08,354 INFO L226 Difference]: Without dead ends: 6421 [2021-05-21 21:26:08,355 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 960.7ms TimeCoverageRelationStatistics Valid=321, Invalid=3461, Unknown=0, NotChecked=0, Total=3782 [2021-05-21 21:26:08,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6421 states. [2021-05-21 21:26:08,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6421 to 3606. [2021-05-21 21:26:08,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3605 states have (on average 3.349514563106796) internal successors, (12075), 3605 states have internal predecessors, (12075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:08,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12075 transitions. [2021-05-21 21:26:08,419 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12075 transitions. Word has length 39 [2021-05-21 21:26:08,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:08,419 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 12075 transitions. [2021-05-21 21:26:08,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:08,419 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12075 transitions. [2021-05-21 21:26:08,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:08,423 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:08,423 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:08,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-05-21 21:26:08,423 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:08,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:08,424 INFO L82 PathProgramCache]: Analyzing trace with hash -459500472, now seen corresponding path program 91 times [2021-05-21 21:26:08,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:08,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010882314] [2021-05-21 21:26:08,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:08,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:08,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010882314] [2021-05-21 21:26:08,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010882314] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:08,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:08,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:26:08,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706156569] [2021-05-21 21:26:08,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:26:08,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:08,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:26:08,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:26:08,585 INFO L87 Difference]: Start difference. First operand 3606 states and 12075 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:09,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:09,715 INFO L93 Difference]: Finished difference Result 5417 states and 18181 transitions. [2021-05-21 21:26:09,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 21:26:09,715 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:09,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:09,723 INFO L225 Difference]: With dead ends: 5417 [2021-05-21 21:26:09,723 INFO L226 Difference]: Without dead ends: 5362 [2021-05-21 21:26:09,724 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 592.2ms TimeCoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:26:09,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2021-05-21 21:26:09,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 3614. [2021-05-21 21:26:09,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 3613 states have (on average 3.3487406587323556) internal successors, (12099), 3613 states have internal predecessors, (12099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:09,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 12099 transitions. [2021-05-21 21:26:09,783 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 12099 transitions. Word has length 39 [2021-05-21 21:26:09,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:09,783 INFO L482 AbstractCegarLoop]: Abstraction has 3614 states and 12099 transitions. [2021-05-21 21:26:09,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:09,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 12099 transitions. [2021-05-21 21:26:09,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:09,788 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:09,788 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:09,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-05-21 21:26:09,788 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:09,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:09,788 INFO L82 PathProgramCache]: Analyzing trace with hash 713151750, now seen corresponding path program 92 times [2021-05-21 21:26:09,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:09,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355608171] [2021-05-21 21:26:09,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:09,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:09,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355608171] [2021-05-21 21:26:09,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355608171] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:09,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:09,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:26:09,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028064281] [2021-05-21 21:26:09,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:26:09,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:09,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:26:09,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:26:09,949 INFO L87 Difference]: Start difference. First operand 3614 states and 12099 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:11,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:11,305 INFO L93 Difference]: Finished difference Result 6278 states and 21115 transitions. [2021-05-21 21:26:11,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-21 21:26:11,306 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:11,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:11,315 INFO L225 Difference]: With dead ends: 6278 [2021-05-21 21:26:11,315 INFO L226 Difference]: Without dead ends: 6218 [2021-05-21 21:26:11,316 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 713.9ms TimeCoverageRelationStatistics Valid=249, Invalid=2507, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 21:26:11,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6218 states. [2021-05-21 21:26:11,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6218 to 3612. [2021-05-21 21:26:11,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 3.3492107449459985) internal successors, (12094), 3611 states have internal predecessors, (12094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12094 transitions. [2021-05-21 21:26:11,375 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12094 transitions. Word has length 39 [2021-05-21 21:26:11,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:11,375 INFO L482 AbstractCegarLoop]: Abstraction has 3612 states and 12094 transitions. [2021-05-21 21:26:11,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:11,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12094 transitions. [2021-05-21 21:26:11,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:11,379 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:11,379 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:11,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-05-21 21:26:11,380 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:11,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:11,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1164251852, now seen corresponding path program 93 times [2021-05-21 21:26:11,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:11,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815990787] [2021-05-21 21:26:11,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:11,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:11,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:11,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815990787] [2021-05-21 21:26:11,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815990787] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:11,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:11,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:26:11,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645619582] [2021-05-21 21:26:11,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:26:11,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:11,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:26:11,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:26:11,551 INFO L87 Difference]: Start difference. First operand 3612 states and 12094 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:12,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:12,632 INFO L93 Difference]: Finished difference Result 5378 states and 18115 transitions. [2021-05-21 21:26:12,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:26:12,632 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:12,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:12,641 INFO L225 Difference]: With dead ends: 5378 [2021-05-21 21:26:12,641 INFO L226 Difference]: Without dead ends: 5287 [2021-05-21 21:26:12,641 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 571.9ms TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:26:12,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5287 states. [2021-05-21 21:26:12,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5287 to 3612. [2021-05-21 21:26:12,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3612 states, 3611 states have (on average 3.3475491553586263) internal successors, (12088), 3611 states have internal predecessors, (12088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12088 transitions. [2021-05-21 21:26:12,697 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12088 transitions. Word has length 39 [2021-05-21 21:26:12,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:12,698 INFO L482 AbstractCegarLoop]: Abstraction has 3612 states and 12088 transitions. [2021-05-21 21:26:12,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:12,698 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12088 transitions. [2021-05-21 21:26:12,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:12,701 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:12,702 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:12,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-05-21 21:26:12,702 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:12,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:12,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1628233238, now seen corresponding path program 94 times [2021-05-21 21:26:12,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:12,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120644512] [2021-05-21 21:26:12,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:12,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:12,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120644512] [2021-05-21 21:26:12,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120644512] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:12,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:12,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:26:12,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319922167] [2021-05-21 21:26:12,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:26:12,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:12,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:26:12,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:26:12,863 INFO L87 Difference]: Start difference. First operand 3612 states and 12088 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:14,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:14,169 INFO L93 Difference]: Finished difference Result 6191 states and 20917 transitions. [2021-05-21 21:26:14,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:26:14,170 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:14,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:14,179 INFO L225 Difference]: With dead ends: 6191 [2021-05-21 21:26:14,179 INFO L226 Difference]: Without dead ends: 6075 [2021-05-21 21:26:14,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 657.4ms TimeCoverageRelationStatistics Valid=228, Invalid=2322, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:26:14,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6075 states. [2021-05-21 21:26:14,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6075 to 3590. [2021-05-21 21:26:14,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 3589 states have (on average 3.353859013652828) internal successors, (12037), 3589 states have internal predecessors, (12037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:14,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 12037 transitions. [2021-05-21 21:26:14,241 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 12037 transitions. Word has length 39 [2021-05-21 21:26:14,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:14,241 INFO L482 AbstractCegarLoop]: Abstraction has 3590 states and 12037 transitions. [2021-05-21 21:26:14,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:14,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 12037 transitions. [2021-05-21 21:26:14,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:14,245 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:14,245 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:14,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-05-21 21:26:14,246 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:14,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:14,246 INFO L82 PathProgramCache]: Analyzing trace with hash -2037500794, now seen corresponding path program 95 times [2021-05-21 21:26:14,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:14,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042482752] [2021-05-21 21:26:14,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:14,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:14,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:14,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042482752] [2021-05-21 21:26:14,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042482752] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:14,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:14,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:26:14,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141234751] [2021-05-21 21:26:14,407 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:26:14,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:14,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:26:14,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:26:14,408 INFO L87 Difference]: Start difference. First operand 3590 states and 12037 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:15,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:15,118 INFO L93 Difference]: Finished difference Result 3901 states and 12905 transitions. [2021-05-21 21:26:15,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-21 21:26:15,118 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:15,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:15,125 INFO L225 Difference]: With dead ends: 3901 [2021-05-21 21:26:15,125 INFO L226 Difference]: Without dead ends: 3834 [2021-05-21 21:26:15,125 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 468.4ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-05-21 21:26:15,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2021-05-21 21:26:15,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 3646. [2021-05-21 21:26:15,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.342935528120713) internal successors, (12185), 3645 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:15,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12185 transitions. [2021-05-21 21:26:15,196 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12185 transitions. Word has length 39 [2021-05-21 21:26:15,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:15,196 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12185 transitions. [2021-05-21 21:26:15,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:15,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12185 transitions. [2021-05-21 21:26:15,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:15,201 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:15,201 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:15,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-05-21 21:26:15,201 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:15,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:15,201 INFO L82 PathProgramCache]: Analyzing trace with hash 2085323284, now seen corresponding path program 96 times [2021-05-21 21:26:15,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:15,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908343043] [2021-05-21 21:26:15,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:15,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:15,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908343043] [2021-05-21 21:26:15,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908343043] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:15,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:15,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:26:15,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692455454] [2021-05-21 21:26:15,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:26:15,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:15,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:26:15,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:26:15,363 INFO L87 Difference]: Start difference. First operand 3646 states and 12185 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:16,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:16,103 INFO L93 Difference]: Finished difference Result 3889 states and 12865 transitions. [2021-05-21 21:26:16,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-21 21:26:16,103 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:16,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:16,110 INFO L225 Difference]: With dead ends: 3889 [2021-05-21 21:26:16,110 INFO L226 Difference]: Without dead ends: 3826 [2021-05-21 21:26:16,110 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 489.4ms TimeCoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2021-05-21 21:26:16,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3826 states. [2021-05-21 21:26:16,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3826 to 3638. [2021-05-21 21:26:16,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.343689854275502) internal successors, (12161), 3637 states have internal predecessors, (12161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:16,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12161 transitions. [2021-05-21 21:26:16,161 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12161 transitions. Word has length 39 [2021-05-21 21:26:16,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:16,161 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12161 transitions. [2021-05-21 21:26:16,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:16,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12161 transitions. [2021-05-21 21:26:16,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:16,166 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:16,166 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:16,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-05-21 21:26:16,166 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:16,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:16,166 INFO L82 PathProgramCache]: Analyzing trace with hash 282489128, now seen corresponding path program 97 times [2021-05-21 21:26:16,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:16,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772475593] [2021-05-21 21:26:16,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:16,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:16,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772475593] [2021-05-21 21:26:16,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772475593] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:16,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:16,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:26:16,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718116994] [2021-05-21 21:26:16,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:26:16,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:16,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:26:16,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:26:16,329 INFO L87 Difference]: Start difference. First operand 3638 states and 12161 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:17,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:17,050 INFO L93 Difference]: Finished difference Result 3889 states and 12857 transitions. [2021-05-21 21:26:17,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-21 21:26:17,050 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:17,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:17,056 INFO L225 Difference]: With dead ends: 3889 [2021-05-21 21:26:17,056 INFO L226 Difference]: Without dead ends: 3754 [2021-05-21 21:26:17,057 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 469.6ms TimeCoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2021-05-21 21:26:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2021-05-21 21:26:17,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3594. [2021-05-21 21:26:17,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3594 states, 3593 states have (on average 3.3523517951572503) internal successors, (12045), 3593 states have internal predecessors, (12045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:17,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 12045 transitions. [2021-05-21 21:26:17,108 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 12045 transitions. Word has length 39 [2021-05-21 21:26:17,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:17,108 INFO L482 AbstractCegarLoop]: Abstraction has 3594 states and 12045 transitions. [2021-05-21 21:26:17,108 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:17,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 12045 transitions. [2021-05-21 21:26:17,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:17,112 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:17,112 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:17,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-05-21 21:26:17,112 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:17,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:17,112 INFO L82 PathProgramCache]: Analyzing trace with hash 861908364, now seen corresponding path program 98 times [2021-05-21 21:26:17,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:17,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561871631] [2021-05-21 21:26:17,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:17,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:17,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561871631] [2021-05-21 21:26:17,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561871631] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:17,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:17,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:26:17,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609310441] [2021-05-21 21:26:17,329 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:26:17,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:17,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:26:17,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:26:17,330 INFO L87 Difference]: Start difference. First operand 3594 states and 12045 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:18,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:18,031 INFO L93 Difference]: Finished difference Result 3825 states and 12693 transitions. [2021-05-21 21:26:18,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-21 21:26:18,031 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:18,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:18,038 INFO L225 Difference]: With dead ends: 3825 [2021-05-21 21:26:18,038 INFO L226 Difference]: Without dead ends: 3758 [2021-05-21 21:26:18,038 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 510.2ms TimeCoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2021-05-21 21:26:18,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2021-05-21 21:26:18,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3650. [2021-05-21 21:26:18,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.341463414634146) internal successors, (12193), 3649 states have internal predecessors, (12193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:18,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12193 transitions. [2021-05-21 21:26:18,091 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12193 transitions. Word has length 39 [2021-05-21 21:26:18,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:18,091 INFO L482 AbstractCegarLoop]: Abstraction has 3650 states and 12193 transitions. [2021-05-21 21:26:18,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:18,091 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12193 transitions. [2021-05-21 21:26:18,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:18,095 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:18,095 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:18,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-05-21 21:26:18,095 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:18,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:18,096 INFO L82 PathProgramCache]: Analyzing trace with hash 689765146, now seen corresponding path program 99 times [2021-05-21 21:26:18,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:18,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444715491] [2021-05-21 21:26:18,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:18,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:18,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444715491] [2021-05-21 21:26:18,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444715491] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:18,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:18,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:26:18,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061068210] [2021-05-21 21:26:18,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:26:18,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:18,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:26:18,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:26:18,288 INFO L87 Difference]: Start difference. First operand 3650 states and 12193 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:18,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:18,982 INFO L93 Difference]: Finished difference Result 3813 states and 12653 transitions. [2021-05-21 21:26:18,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-21 21:26:18,983 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:18,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:18,989 INFO L225 Difference]: With dead ends: 3813 [2021-05-21 21:26:18,989 INFO L226 Difference]: Without dead ends: 3750 [2021-05-21 21:26:18,989 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 464.4ms TimeCoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2021-05-21 21:26:19,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-05-21 21:26:19,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3642. [2021-05-21 21:26:19,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3422136775611095) internal successors, (12169), 3641 states have internal predecessors, (12169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12169 transitions. [2021-05-21 21:26:19,040 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12169 transitions. Word has length 39 [2021-05-21 21:26:19,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:19,040 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12169 transitions. [2021-05-21 21:26:19,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:19,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12169 transitions. [2021-05-21 21:26:19,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:19,044 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:19,044 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:19,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-05-21 21:26:19,045 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:19,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:19,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1113069010, now seen corresponding path program 100 times [2021-05-21 21:26:19,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:19,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557751465] [2021-05-21 21:26:19,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:19,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:19,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:19,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557751465] [2021-05-21 21:26:19,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557751465] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:19,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:19,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:26:19,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318952832] [2021-05-21 21:26:19,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:26:19,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:19,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:26:19,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:26:19,210 INFO L87 Difference]: Start difference. First operand 3642 states and 12169 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:19,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:19,917 INFO L93 Difference]: Finished difference Result 3813 states and 12645 transitions. [2021-05-21 21:26:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-21 21:26:19,917 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:19,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:19,923 INFO L225 Difference]: With dead ends: 3813 [2021-05-21 21:26:19,923 INFO L226 Difference]: Without dead ends: 3662 [2021-05-21 21:26:19,923 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 443.2ms TimeCoverageRelationStatistics Valid=142, Invalid=1340, Unknown=0, NotChecked=0, Total=1482 [2021-05-21 21:26:19,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2021-05-21 21:26:19,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3582. [2021-05-21 21:26:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3581 states have (on average 3.3557665456576373) internal successors, (12017), 3581 states have internal predecessors, (12017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 12017 transitions. [2021-05-21 21:26:19,970 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 12017 transitions. Word has length 39 [2021-05-21 21:26:19,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:19,970 INFO L482 AbstractCegarLoop]: Abstraction has 3582 states and 12017 transitions. [2021-05-21 21:26:19,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:19,971 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 12017 transitions. [2021-05-21 21:26:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:19,974 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:19,974 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:19,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-05-21 21:26:19,975 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:19,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:19,975 INFO L82 PathProgramCache]: Analyzing trace with hash 318375130, now seen corresponding path program 101 times [2021-05-21 21:26:19,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:19,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397870245] [2021-05-21 21:26:19,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:20,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:20,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:20,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397870245] [2021-05-21 21:26:20,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397870245] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:20,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:20,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:20,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053279327] [2021-05-21 21:26:20,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:20,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:20,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:20,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:20,122 INFO L87 Difference]: Start difference. First operand 3582 states and 12017 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:21,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:21,324 INFO L93 Difference]: Finished difference Result 4325 states and 14372 transitions. [2021-05-21 21:26:21,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-21 21:26:21,324 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:21,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:21,331 INFO L225 Difference]: With dead ends: 4325 [2021-05-21 21:26:21,331 INFO L226 Difference]: Without dead ends: 4258 [2021-05-21 21:26:21,331 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 714.4ms TimeCoverageRelationStatistics Valid=243, Invalid=2207, Unknown=0, NotChecked=0, Total=2450 [2021-05-21 21:26:21,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4258 states. [2021-05-21 21:26:21,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4258 to 3658. [2021-05-21 21:26:21,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.3500136724090783) internal successors, (12251), 3657 states have internal predecessors, (12251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:21,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12251 transitions. [2021-05-21 21:26:21,385 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12251 transitions. Word has length 39 [2021-05-21 21:26:21,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:21,385 INFO L482 AbstractCegarLoop]: Abstraction has 3658 states and 12251 transitions. [2021-05-21 21:26:21,385 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:21,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12251 transitions. [2021-05-21 21:26:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:21,427 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:21,427 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:21,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-05-21 21:26:21,427 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:21,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:21,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1401240840, now seen corresponding path program 102 times [2021-05-21 21:26:21,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:21,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532003708] [2021-05-21 21:26:21,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:21,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:21,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532003708] [2021-05-21 21:26:21,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532003708] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:21,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:21,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:21,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439531014] [2021-05-21 21:26:21,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:21,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:21,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:21,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:21,604 INFO L87 Difference]: Start difference. First operand 3658 states and 12251 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:23,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:23,113 INFO L93 Difference]: Finished difference Result 4462 states and 14729 transitions. [2021-05-21 21:26:23,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-21 21:26:23,113 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:23,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:23,120 INFO L225 Difference]: With dead ends: 4462 [2021-05-21 21:26:23,120 INFO L226 Difference]: Without dead ends: 4419 [2021-05-21 21:26:23,121 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 940.3ms TimeCoverageRelationStatistics Valid=323, Invalid=3217, Unknown=0, NotChecked=0, Total=3540 [2021-05-21 21:26:23,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2021-05-21 21:26:23,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 3664. [2021-05-21 21:26:23,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3663 states have (on average 3.3480753480753482) internal successors, (12264), 3663 states have internal predecessors, (12264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:23,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 12264 transitions. [2021-05-21 21:26:23,176 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 12264 transitions. Word has length 39 [2021-05-21 21:26:23,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:23,176 INFO L482 AbstractCegarLoop]: Abstraction has 3664 states and 12264 transitions. [2021-05-21 21:26:23,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:23,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 12264 transitions. [2021-05-21 21:26:23,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:23,180 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:23,181 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:23,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-05-21 21:26:23,181 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:23,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:23,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1113128154, now seen corresponding path program 103 times [2021-05-21 21:26:23,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:23,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991131956] [2021-05-21 21:26:23,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:23,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:23,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991131956] [2021-05-21 21:26:23,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991131956] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:23,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:23,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:23,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342317062] [2021-05-21 21:26:23,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:23,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:23,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:23,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:23,349 INFO L87 Difference]: Start difference. First operand 3664 states and 12264 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:24,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:24,832 INFO L93 Difference]: Finished difference Result 4393 states and 14549 transitions. [2021-05-21 21:26:24,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-21 21:26:24,833 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:24,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:24,844 INFO L225 Difference]: With dead ends: 4393 [2021-05-21 21:26:24,845 INFO L226 Difference]: Without dead ends: 4329 [2021-05-21 21:26:24,845 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 933.7ms TimeCoverageRelationStatistics Valid=305, Invalid=3001, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 21:26:24,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4329 states. [2021-05-21 21:26:24,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4329 to 3646. [2021-05-21 21:26:24,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.35281207133059) internal successors, (12221), 3645 states have internal predecessors, (12221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:24,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12221 transitions. [2021-05-21 21:26:24,904 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12221 transitions. Word has length 39 [2021-05-21 21:26:24,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:24,904 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12221 transitions. [2021-05-21 21:26:24,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:24,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12221 transitions. [2021-05-21 21:26:24,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:24,908 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:24,909 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:24,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-05-21 21:26:24,909 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:24,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:24,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1733562554, now seen corresponding path program 104 times [2021-05-21 21:26:24,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:24,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318808867] [2021-05-21 21:26:24,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:25,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:25,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:25,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318808867] [2021-05-21 21:26:25,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318808867] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:25,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:25,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:25,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167266067] [2021-05-21 21:26:25,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:25,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:25,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:25,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:25,123 INFO L87 Difference]: Start difference. First operand 3646 states and 12221 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:26,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:26,133 INFO L93 Difference]: Finished difference Result 4273 states and 14194 transitions. [2021-05-21 21:26:26,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:26:26,133 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:26,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:26,170 INFO L225 Difference]: With dead ends: 4273 [2021-05-21 21:26:26,170 INFO L226 Difference]: Without dead ends: 4206 [2021-05-21 21:26:26,171 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 621.7ms TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 21:26:26,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4206 states. [2021-05-21 21:26:26,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4206 to 3654. [2021-05-21 21:26:26,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3653 states have (on average 3.3498494388174103) internal successors, (12237), 3653 states have internal predecessors, (12237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:26,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 12237 transitions. [2021-05-21 21:26:26,221 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 12237 transitions. Word has length 39 [2021-05-21 21:26:26,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:26,221 INFO L482 AbstractCegarLoop]: Abstraction has 3654 states and 12237 transitions. [2021-05-21 21:26:26,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:26,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 12237 transitions. [2021-05-21 21:26:26,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:26,225 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:26,225 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:26,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-05-21 21:26:26,225 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:26,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:26,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1602967706, now seen corresponding path program 105 times [2021-05-21 21:26:26,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:26,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056117597] [2021-05-21 21:26:26,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:26,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:26,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:26,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056117597] [2021-05-21 21:26:26,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056117597] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:26,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:26,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:26,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655158666] [2021-05-21 21:26:26,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:26,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:26,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:26,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:26,394 INFO L87 Difference]: Start difference. First operand 3654 states and 12237 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:27,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:27,421 INFO L93 Difference]: Finished difference Result 4261 states and 14154 transitions. [2021-05-21 21:26:27,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 21:26:27,421 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:27,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:27,428 INFO L225 Difference]: With dead ends: 4261 [2021-05-21 21:26:27,428 INFO L226 Difference]: Without dead ends: 4198 [2021-05-21 21:26:27,428 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 615.9ms TimeCoverageRelationStatistics Valid=217, Invalid=1945, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:26:27,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2021-05-21 21:26:27,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 3646. [2021-05-21 21:26:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3517146776406035) internal successors, (12217), 3645 states have internal predecessors, (12217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:27,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12217 transitions. [2021-05-21 21:26:27,479 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12217 transitions. Word has length 39 [2021-05-21 21:26:27,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:27,479 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12217 transitions. [2021-05-21 21:26:27,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:27,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12217 transitions. [2021-05-21 21:26:27,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:27,483 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:27,483 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:27,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-05-21 21:26:27,483 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:27,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:27,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1467289114, now seen corresponding path program 106 times [2021-05-21 21:26:27,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:27,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299948726] [2021-05-21 21:26:27,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:27,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:27,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299948726] [2021-05-21 21:26:27,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299948726] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:27,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:27,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:27,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436145597] [2021-05-21 21:26:27,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:27,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:27,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:27,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:27,628 INFO L87 Difference]: Start difference. First operand 3646 states and 12217 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:28,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:28,912 INFO L93 Difference]: Finished difference Result 4416 states and 14517 transitions. [2021-05-21 21:26:28,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:26:28,912 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:28,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:28,919 INFO L225 Difference]: With dead ends: 4416 [2021-05-21 21:26:28,919 INFO L226 Difference]: Without dead ends: 4373 [2021-05-21 21:26:28,920 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 824.5ms TimeCoverageRelationStatistics Valid=294, Invalid=2786, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:26:28,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4373 states. [2021-05-21 21:26:28,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4373 to 3654. [2021-05-21 21:26:28,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3653 states have (on average 3.3498494388174103) internal successors, (12237), 3653 states have internal predecessors, (12237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 12237 transitions. [2021-05-21 21:26:28,972 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 12237 transitions. Word has length 39 [2021-05-21 21:26:28,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:28,972 INFO L482 AbstractCegarLoop]: Abstraction has 3654 states and 12237 transitions. [2021-05-21 21:26:28,972 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:28,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 12237 transitions. [2021-05-21 21:26:28,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:28,976 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:28,976 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:28,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-05-21 21:26:28,976 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:28,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:28,976 INFO L82 PathProgramCache]: Analyzing trace with hash -313309188, now seen corresponding path program 107 times [2021-05-21 21:26:28,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:28,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322630375] [2021-05-21 21:26:28,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:29,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:29,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:29,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322630375] [2021-05-21 21:26:29,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322630375] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:29,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:29,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:29,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241207014] [2021-05-21 21:26:29,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:29,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:29,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:29,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:29,123 INFO L87 Difference]: Start difference. First operand 3654 states and 12237 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:30,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:30,334 INFO L93 Difference]: Finished difference Result 4404 states and 14479 transitions. [2021-05-21 21:26:30,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-21 21:26:30,335 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:30,341 INFO L225 Difference]: With dead ends: 4404 [2021-05-21 21:26:30,341 INFO L226 Difference]: Without dead ends: 4352 [2021-05-21 21:26:30,341 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 773.4ms TimeCoverageRelationStatistics Valid=286, Invalid=2684, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:26:30,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4352 states. [2021-05-21 21:26:30,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4352 to 3646. [2021-05-21 21:26:30,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3517146776406035) internal successors, (12217), 3645 states have internal predecessors, (12217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:30,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12217 transitions. [2021-05-21 21:26:30,409 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12217 transitions. Word has length 39 [2021-05-21 21:26:30,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:30,409 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12217 transitions. [2021-05-21 21:26:30,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:30,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12217 transitions. [2021-05-21 21:26:30,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:30,413 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:30,413 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:30,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-05-21 21:26:30,413 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:30,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:30,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1909194612, now seen corresponding path program 108 times [2021-05-21 21:26:30,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:30,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261119418] [2021-05-21 21:26:30,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:30,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:30,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:30,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261119418] [2021-05-21 21:26:30,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261119418] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:30,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:30,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:30,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979745422] [2021-05-21 21:26:30,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:30,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:30,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:30,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:30,560 INFO L87 Difference]: Start difference. First operand 3646 states and 12217 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:31,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:31,540 INFO L93 Difference]: Finished difference Result 4381 states and 14402 transitions. [2021-05-21 21:26:31,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-21 21:26:31,541 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:31,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:31,547 INFO L225 Difference]: With dead ends: 4381 [2021-05-21 21:26:31,547 INFO L226 Difference]: Without dead ends: 4326 [2021-05-21 21:26:31,548 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 597.5ms TimeCoverageRelationStatistics Valid=233, Invalid=2023, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:26:31,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2021-05-21 21:26:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 3648. [2021-05-21 21:26:31,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.3506992048258843) internal successors, (12220), 3647 states have internal predecessors, (12220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:31,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12220 transitions. [2021-05-21 21:26:31,598 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12220 transitions. Word has length 39 [2021-05-21 21:26:31,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:31,598 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 12220 transitions. [2021-05-21 21:26:31,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:31,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12220 transitions. [2021-05-21 21:26:31,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:31,602 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:31,603 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:31,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-05-21 21:26:31,603 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:31,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:31,603 INFO L82 PathProgramCache]: Analyzing trace with hash -736542390, now seen corresponding path program 109 times [2021-05-21 21:26:31,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:31,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217461884] [2021-05-21 21:26:31,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:31,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:31,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:31,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217461884] [2021-05-21 21:26:31,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217461884] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:31,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:31,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:31,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740848932] [2021-05-21 21:26:31,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:31,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:31,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:31,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:31,748 INFO L87 Difference]: Start difference. First operand 3648 states and 12220 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:32,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:32,659 INFO L93 Difference]: Finished difference Result 4316 states and 14250 transitions. [2021-05-21 21:26:32,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:26:32,659 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:32,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:32,666 INFO L225 Difference]: With dead ends: 4316 [2021-05-21 21:26:32,666 INFO L226 Difference]: Without dead ends: 4270 [2021-05-21 21:26:32,666 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 545.6ms TimeCoverageRelationStatistics Valid=208, Invalid=1772, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 21:26:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2021-05-21 21:26:32,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 3652. [2021-05-21 21:26:32,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 3651 states have (on average 3.3492193919474116) internal successors, (12228), 3651 states have internal predecessors, (12228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:32,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 12228 transitions. [2021-05-21 21:26:32,716 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 12228 transitions. Word has length 39 [2021-05-21 21:26:32,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:32,716 INFO L482 AbstractCegarLoop]: Abstraction has 3652 states and 12228 transitions. [2021-05-21 21:26:32,717 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:32,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 12228 transitions. [2021-05-21 21:26:32,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:32,721 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:32,721 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:32,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-05-21 21:26:32,721 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:32,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:32,721 INFO L82 PathProgramCache]: Analyzing trace with hash -984008552, now seen corresponding path program 110 times [2021-05-21 21:26:32,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:32,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587104515] [2021-05-21 21:26:32,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:32,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:32,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587104515] [2021-05-21 21:26:32,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587104515] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:32,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:32,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:32,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844686786] [2021-05-21 21:26:32,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:32,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:32,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:32,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:32,867 INFO L87 Difference]: Start difference. First operand 3652 states and 12228 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:34,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:34,092 INFO L93 Difference]: Finished difference Result 4387 states and 14459 transitions. [2021-05-21 21:26:34,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:26:34,093 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:34,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:34,099 INFO L225 Difference]: With dead ends: 4387 [2021-05-21 21:26:34,099 INFO L226 Difference]: Without dead ends: 4323 [2021-05-21 21:26:34,100 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 780.3ms TimeCoverageRelationStatistics Valid=284, Invalid=2578, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 21:26:34,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2021-05-21 21:26:34,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 3678. [2021-05-21 21:26:34,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3678 states, 3677 states have (on average 3.349197715528964) internal successors, (12315), 3677 states have internal predecessors, (12315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:34,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 12315 transitions. [2021-05-21 21:26:34,152 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 12315 transitions. Word has length 39 [2021-05-21 21:26:34,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:34,152 INFO L482 AbstractCegarLoop]: Abstraction has 3678 states and 12315 transitions. [2021-05-21 21:26:34,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:34,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 12315 transitions. [2021-05-21 21:26:34,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:34,156 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:34,156 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:34,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-05-21 21:26:34,156 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:34,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:34,157 INFO L82 PathProgramCache]: Analyzing trace with hash 554866970, now seen corresponding path program 111 times [2021-05-21 21:26:34,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:34,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273232753] [2021-05-21 21:26:34,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:34,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:34,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273232753] [2021-05-21 21:26:34,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273232753] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:34,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:34,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:34,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719359349] [2021-05-21 21:26:34,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:34,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:34,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:34,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:34,309 INFO L87 Difference]: Start difference. First operand 3678 states and 12315 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:35,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:35,220 INFO L93 Difference]: Finished difference Result 4269 states and 14200 transitions. [2021-05-21 21:26:35,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-21 21:26:35,220 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:35,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:35,226 INFO L225 Difference]: With dead ends: 4269 [2021-05-21 21:26:35,227 INFO L226 Difference]: Without dead ends: 4202 [2021-05-21 21:26:35,227 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 498.1ms TimeCoverageRelationStatistics Valid=177, Invalid=1545, Unknown=0, NotChecked=0, Total=1722 [2021-05-21 21:26:35,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2021-05-21 21:26:35,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 3718. [2021-05-21 21:26:35,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3718 states, 3717 states have (on average 3.3422114608555287) internal successors, (12423), 3717 states have internal predecessors, (12423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:35,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3718 states to 3718 states and 12423 transitions. [2021-05-21 21:26:35,280 INFO L78 Accepts]: Start accepts. Automaton has 3718 states and 12423 transitions. Word has length 39 [2021-05-21 21:26:35,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:35,280 INFO L482 AbstractCegarLoop]: Abstraction has 3718 states and 12423 transitions. [2021-05-21 21:26:35,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:35,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3718 states and 12423 transitions. [2021-05-21 21:26:35,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:35,284 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:35,284 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:35,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-05-21 21:26:35,284 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:35,284 INFO L82 PathProgramCache]: Analyzing trace with hash 424272122, now seen corresponding path program 112 times [2021-05-21 21:26:35,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:35,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49112773] [2021-05-21 21:26:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:35,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:35,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49112773] [2021-05-21 21:26:35,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49112773] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:35,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:35,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:35,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995598453] [2021-05-21 21:26:35,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:35,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:35,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:35,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:35,435 INFO L87 Difference]: Start difference. First operand 3718 states and 12423 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:36,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:36,383 INFO L93 Difference]: Finished difference Result 4257 states and 14160 transitions. [2021-05-21 21:26:36,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-21 21:26:36,383 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:36,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:36,390 INFO L225 Difference]: With dead ends: 4257 [2021-05-21 21:26:36,391 INFO L226 Difference]: Without dead ends: 4194 [2021-05-21 21:26:36,391 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 540.5ms TimeCoverageRelationStatistics Valid=185, Invalid=1621, Unknown=0, NotChecked=0, Total=1806 [2021-05-21 21:26:36,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2021-05-21 21:26:36,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 3710. [2021-05-21 21:26:36,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3710 states, 3709 states have (on average 3.3429495820976003) internal successors, (12399), 3709 states have internal predecessors, (12399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:36,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 12399 transitions. [2021-05-21 21:26:36,447 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 12399 transitions. Word has length 39 [2021-05-21 21:26:36,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:36,447 INFO L482 AbstractCegarLoop]: Abstraction has 3710 states and 12399 transitions. [2021-05-21 21:26:36,447 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:36,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 12399 transitions. [2021-05-21 21:26:36,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:36,451 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:36,452 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:36,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-05-21 21:26:36,452 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:36,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:36,452 INFO L82 PathProgramCache]: Analyzing trace with hash -105628326, now seen corresponding path program 113 times [2021-05-21 21:26:36,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:36,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253246204] [2021-05-21 21:26:36,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:36,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:36,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253246204] [2021-05-21 21:26:36,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253246204] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:36,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:36,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:36,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222413513] [2021-05-21 21:26:36,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:36,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:36,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:36,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:36,657 INFO L87 Difference]: Start difference. First operand 3710 states and 12399 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:37,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:37,669 INFO L93 Difference]: Finished difference Result 4269 states and 14184 transitions. [2021-05-21 21:26:37,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-21 21:26:37,669 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:37,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:37,676 INFO L225 Difference]: With dead ends: 4269 [2021-05-21 21:26:37,677 INFO L226 Difference]: Without dead ends: 4130 [2021-05-21 21:26:37,677 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 614.3ms TimeCoverageRelationStatistics Valid=191, Invalid=1701, Unknown=0, NotChecked=0, Total=1892 [2021-05-21 21:26:37,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2021-05-21 21:26:37,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 3662. [2021-05-21 21:26:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3661 states have (on average 3.347446052990986) internal successors, (12255), 3661 states have internal predecessors, (12255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:37,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12255 transitions. [2021-05-21 21:26:37,734 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12255 transitions. Word has length 39 [2021-05-21 21:26:37,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:37,734 INFO L482 AbstractCegarLoop]: Abstraction has 3662 states and 12255 transitions. [2021-05-21 21:26:37,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:37,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12255 transitions. [2021-05-21 21:26:37,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:37,739 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:37,739 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:37,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-05-21 21:26:37,739 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:37,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:37,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1578866516, now seen corresponding path program 114 times [2021-05-21 21:26:37,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:37,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607050359] [2021-05-21 21:26:37,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:37,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:37,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:37,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607050359] [2021-05-21 21:26:37,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607050359] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:37,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:37,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 21:26:37,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911787615] [2021-05-21 21:26:37,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 21:26:37,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:37,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 21:26:37,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-05-21 21:26:37,896 INFO L87 Difference]: Start difference. First operand 3662 states and 12255 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:38,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:38,920 INFO L93 Difference]: Finished difference Result 4173 states and 13890 transitions. [2021-05-21 21:26:38,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 21:26:38,920 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:38,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:38,927 INFO L225 Difference]: With dead ends: 4173 [2021-05-21 21:26:38,927 INFO L226 Difference]: Without dead ends: 4094 [2021-05-21 21:26:38,927 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 631.6ms TimeCoverageRelationStatistics Valid=209, Invalid=1771, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 21:26:38,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2021-05-21 21:26:38,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 3686. [2021-05-21 21:26:38,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 3685 states have (on average 3.343012211668928) internal successors, (12319), 3685 states have internal predecessors, (12319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 12319 transitions. [2021-05-21 21:26:38,993 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 12319 transitions. Word has length 39 [2021-05-21 21:26:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:38,993 INFO L482 AbstractCegarLoop]: Abstraction has 3686 states and 12319 transitions. [2021-05-21 21:26:38,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:38,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 12319 transitions. [2021-05-21 21:26:38,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:38,998 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:38,998 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:38,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-05-21 21:26:38,998 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:38,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:38,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1192929108, now seen corresponding path program 115 times [2021-05-21 21:26:38,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:38,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951927962] [2021-05-21 21:26:38,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:39,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:39,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:39,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951927962] [2021-05-21 21:26:39,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951927962] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:39,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:39,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 21:26:39,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746093683] [2021-05-21 21:26:39,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 21:26:39,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:39,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 21:26:39,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-05-21 21:26:39,147 INFO L87 Difference]: Start difference. First operand 3686 states and 12319 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:40,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:40,363 INFO L93 Difference]: Finished difference Result 4225 states and 14028 transitions. [2021-05-21 21:26:40,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:26:40,363 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:40,369 INFO L225 Difference]: With dead ends: 4225 [2021-05-21 21:26:40,370 INFO L226 Difference]: Without dead ends: 4095 [2021-05-21 21:26:40,370 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 739.2ms TimeCoverageRelationStatistics Valid=264, Invalid=2492, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 21:26:40,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4095 states. [2021-05-21 21:26:40,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4095 to 3662. [2021-05-21 21:26:40,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3661 states have (on average 3.345260857689156) internal successors, (12247), 3661 states have internal predecessors, (12247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:40,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12247 transitions. [2021-05-21 21:26:40,425 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12247 transitions. Word has length 39 [2021-05-21 21:26:40,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:40,425 INFO L482 AbstractCegarLoop]: Abstraction has 3662 states and 12247 transitions. [2021-05-21 21:26:40,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:40,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12247 transitions. [2021-05-21 21:26:40,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:40,429 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:40,430 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:40,430 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-05-21 21:26:40,430 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:40,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:40,430 INFO L82 PathProgramCache]: Analyzing trace with hash 645022744, now seen corresponding path program 116 times [2021-05-21 21:26:40,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:40,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839512478] [2021-05-21 21:26:40,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:40,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:40,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:40,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:40,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839512478] [2021-05-21 21:26:40,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839512478] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:40,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:40,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:40,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110019402] [2021-05-21 21:26:40,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:40,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:40,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:40,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:40,586 INFO L87 Difference]: Start difference. First operand 3662 states and 12247 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:41,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:41,704 INFO L93 Difference]: Finished difference Result 4187 states and 13913 transitions. [2021-05-21 21:26:41,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:26:41,704 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:41,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:41,711 INFO L225 Difference]: With dead ends: 4187 [2021-05-21 21:26:41,711 INFO L226 Difference]: Without dead ends: 4120 [2021-05-21 21:26:41,711 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 706.2ms TimeCoverageRelationStatistics Valid=261, Invalid=2391, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:26:41,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4120 states. [2021-05-21 21:26:41,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4120 to 3662. [2021-05-21 21:26:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3661 states have (on average 3.341983064736411) internal successors, (12235), 3661 states have internal predecessors, (12235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:41,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12235 transitions. [2021-05-21 21:26:41,766 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12235 transitions. Word has length 39 [2021-05-21 21:26:41,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:41,766 INFO L482 AbstractCegarLoop]: Abstraction has 3662 states and 12235 transitions. [2021-05-21 21:26:41,766 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:41,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12235 transitions. [2021-05-21 21:26:41,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:41,770 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:41,770 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:41,770 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-05-21 21:26:41,770 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:41,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:41,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1074593226, now seen corresponding path program 117 times [2021-05-21 21:26:41,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:41,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268904944] [2021-05-21 21:26:41,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:41,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:41,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:41,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268904944] [2021-05-21 21:26:41,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268904944] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:41,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:41,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:41,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271097015] [2021-05-21 21:26:41,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:41,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:41,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:41,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:41,917 INFO L87 Difference]: Start difference. First operand 3662 states and 12235 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:43,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:43,438 INFO L93 Difference]: Finished difference Result 4276 states and 14159 transitions. [2021-05-21 21:26:43,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-21 21:26:43,438 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:43,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:43,445 INFO L225 Difference]: With dead ends: 4276 [2021-05-21 21:26:43,445 INFO L226 Difference]: Without dead ends: 4215 [2021-05-21 21:26:43,445 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 1015.8ms TimeCoverageRelationStatistics Valid=352, Invalid=3554, Unknown=0, NotChecked=0, Total=3906 [2021-05-21 21:26:43,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2021-05-21 21:26:43,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 3650. [2021-05-21 21:26:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.344751986845711) internal successors, (12205), 3649 states have internal predecessors, (12205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:43,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12205 transitions. [2021-05-21 21:26:43,499 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12205 transitions. Word has length 39 [2021-05-21 21:26:43,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:43,499 INFO L482 AbstractCegarLoop]: Abstraction has 3650 states and 12205 transitions. [2021-05-21 21:26:43,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:43,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12205 transitions. [2021-05-21 21:26:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:43,503 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:43,503 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:43,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-05-21 21:26:43,504 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:43,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:43,504 INFO L82 PathProgramCache]: Analyzing trace with hash 2060210168, now seen corresponding path program 118 times [2021-05-21 21:26:43,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:43,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145058365] [2021-05-21 21:26:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:43,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:43,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:43,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145058365] [2021-05-21 21:26:43,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145058365] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:43,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:43,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:43,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093667404] [2021-05-21 21:26:43,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:43,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:43,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:43,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:43,660 INFO L87 Difference]: Start difference. First operand 3650 states and 12205 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:44,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:44,578 INFO L93 Difference]: Finished difference Result 4073 states and 13548 transitions. [2021-05-21 21:26:44,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 21:26:44,578 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:44,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:44,585 INFO L225 Difference]: With dead ends: 4073 [2021-05-21 21:26:44,585 INFO L226 Difference]: Without dead ends: 4006 [2021-05-21 21:26:44,585 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 585.2ms TimeCoverageRelationStatistics Valid=213, Invalid=1857, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:26:44,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4006 states. [2021-05-21 21:26:44,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4006 to 3658. [2021-05-21 21:26:44,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.3418102269619907) internal successors, (12221), 3657 states have internal predecessors, (12221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12221 transitions. [2021-05-21 21:26:44,640 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12221 transitions. Word has length 39 [2021-05-21 21:26:44,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:44,640 INFO L482 AbstractCegarLoop]: Abstraction has 3658 states and 12221 transitions. [2021-05-21 21:26:44,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12221 transitions. [2021-05-21 21:26:44,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:44,644 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:44,644 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:44,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-05-21 21:26:44,644 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:44,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:44,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1929615320, now seen corresponding path program 119 times [2021-05-21 21:26:44,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:44,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621317210] [2021-05-21 21:26:44,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:44,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:44,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621317210] [2021-05-21 21:26:44,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621317210] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:44,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:44,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:44,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546327343] [2021-05-21 21:26:44,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:44,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:44,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:44,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:44,790 INFO L87 Difference]: Start difference. First operand 3658 states and 12221 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:45,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:45,728 INFO L93 Difference]: Finished difference Result 4061 states and 13508 transitions. [2021-05-21 21:26:45,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:26:45,728 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:45,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:45,735 INFO L225 Difference]: With dead ends: 4061 [2021-05-21 21:26:45,735 INFO L226 Difference]: Without dead ends: 3998 [2021-05-21 21:26:45,735 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 586.2ms TimeCoverageRelationStatistics Valid=219, Invalid=1943, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:26:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2021-05-21 21:26:45,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3650. [2021-05-21 21:26:45,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.3436557961085227) internal successors, (12201), 3649 states have internal predecessors, (12201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:45,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12201 transitions. [2021-05-21 21:26:45,792 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12201 transitions. Word has length 39 [2021-05-21 21:26:45,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:45,792 INFO L482 AbstractCegarLoop]: Abstraction has 3650 states and 12201 transitions. [2021-05-21 21:26:45,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:45,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12201 transitions. [2021-05-21 21:26:45,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:45,797 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:45,797 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:45,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-05-21 21:26:45,797 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:45,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:45,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1793936728, now seen corresponding path program 120 times [2021-05-21 21:26:45,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:45,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233880306] [2021-05-21 21:26:45,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:45,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:45,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233880306] [2021-05-21 21:26:45,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233880306] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:45,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:45,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:45,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543155138] [2021-05-21 21:26:45,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:45,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:45,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:45,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:45,950 INFO L87 Difference]: Start difference. First operand 3650 states and 12201 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:47,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:47,197 INFO L93 Difference]: Finished difference Result 4168 states and 13766 transitions. [2021-05-21 21:26:47,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:26:47,197 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:47,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:47,204 INFO L225 Difference]: With dead ends: 4168 [2021-05-21 21:26:47,204 INFO L226 Difference]: Without dead ends: 4119 [2021-05-21 21:26:47,204 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 821.2ms TimeCoverageRelationStatistics Valid=305, Invalid=2887, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 21:26:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2021-05-21 21:26:47,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 3644. [2021-05-21 21:26:47,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 3643 states have (on average 3.3450452923414766) internal successors, (12186), 3643 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 12186 transitions. [2021-05-21 21:26:47,261 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 12186 transitions. Word has length 39 [2021-05-21 21:26:47,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:47,261 INFO L482 AbstractCegarLoop]: Abstraction has 3644 states and 12186 transitions. [2021-05-21 21:26:47,261 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:47,261 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 12186 transitions. [2021-05-21 21:26:47,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:47,265 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:47,265 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:47,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-05-21 21:26:47,265 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:47,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:47,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1582546998, now seen corresponding path program 121 times [2021-05-21 21:26:47,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:47,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016652659] [2021-05-21 21:26:47,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:47,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:47,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:47,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016652659] [2021-05-21 21:26:47,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016652659] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:47,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:47,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:47,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204022343] [2021-05-21 21:26:47,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:47,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:47,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:47,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:47,436 INFO L87 Difference]: Start difference. First operand 3644 states and 12186 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:48,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:48,401 INFO L93 Difference]: Finished difference Result 4095 states and 13578 transitions. [2021-05-21 21:26:48,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:26:48,402 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:48,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:48,408 INFO L225 Difference]: With dead ends: 4095 [2021-05-21 21:26:48,408 INFO L226 Difference]: Without dead ends: 4040 [2021-05-21 21:26:48,409 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 638.4ms TimeCoverageRelationStatistics Valid=231, Invalid=2025, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:26:48,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-05-21 21:26:48,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3644. [2021-05-21 21:26:48,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 3643 states have (on average 3.34449629426297) internal successors, (12184), 3643 states have internal predecessors, (12184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 12184 transitions. [2021-05-21 21:26:48,465 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 12184 transitions. Word has length 39 [2021-05-21 21:26:48,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:48,465 INFO L482 AbstractCegarLoop]: Abstraction has 3644 states and 12184 transitions. [2021-05-21 21:26:48,465 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:48,465 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 12184 transitions. [2021-05-21 21:26:48,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:48,469 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:48,469 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:48,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-05-21 21:26:48,470 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:48,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:48,470 INFO L82 PathProgramCache]: Analyzing trace with hash -409894776, now seen corresponding path program 122 times [2021-05-21 21:26:48,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:48,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728601798] [2021-05-21 21:26:48,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:48,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:48,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728601798] [2021-05-21 21:26:48,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728601798] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:48,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:48,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:48,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065884664] [2021-05-21 21:26:48,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:48,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:48,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:48,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:48,619 INFO L87 Difference]: Start difference. First operand 3644 states and 12184 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:49,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:49,536 INFO L93 Difference]: Finished difference Result 4038 states and 13446 transitions. [2021-05-21 21:26:49,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:26:49,536 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:49,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:49,542 INFO L225 Difference]: With dead ends: 4038 [2021-05-21 21:26:49,542 INFO L226 Difference]: Without dead ends: 3982 [2021-05-21 21:26:49,542 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 584.6ms TimeCoverageRelationStatistics Valid=217, Invalid=1853, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:26:49,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2021-05-21 21:26:49,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 3634. [2021-05-21 21:26:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 3.3479218276906137) internal successors, (12163), 3633 states have internal predecessors, (12163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 12163 transitions. [2021-05-21 21:26:49,608 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 12163 transitions. Word has length 39 [2021-05-21 21:26:49,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:49,608 INFO L482 AbstractCegarLoop]: Abstraction has 3634 states and 12163 transitions. [2021-05-21 21:26:49,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:49,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 12163 transitions. [2021-05-21 21:26:49,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:49,612 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:49,612 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:49,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-05-21 21:26:49,613 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:49,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:49,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1832153546, now seen corresponding path program 123 times [2021-05-21 21:26:49,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:49,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080527308] [2021-05-21 21:26:49,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:49,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:49,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080527308] [2021-05-21 21:26:49,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080527308] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:49,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:49,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:49,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517764444] [2021-05-21 21:26:49,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:49,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:49,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:49,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:49,760 INFO L87 Difference]: Start difference. First operand 3634 states and 12163 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:51,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:51,177 INFO L93 Difference]: Finished difference Result 4309 states and 14202 transitions. [2021-05-21 21:26:51,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-21 21:26:51,178 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:51,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:51,185 INFO L225 Difference]: With dead ends: 4309 [2021-05-21 21:26:51,185 INFO L226 Difference]: Without dead ends: 4172 [2021-05-21 21:26:51,185 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 891.5ms TimeCoverageRelationStatistics Valid=314, Invalid=3226, Unknown=0, NotChecked=0, Total=3540 [2021-05-21 21:26:51,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-05-21 21:26:51,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3638. [2021-05-21 21:26:51,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.346989276876547) internal successors, (12173), 3637 states have internal predecessors, (12173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:51,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12173 transitions. [2021-05-21 21:26:51,243 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12173 transitions. Word has length 39 [2021-05-21 21:26:51,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:51,243 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12173 transitions. [2021-05-21 21:26:51,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:51,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12173 transitions. [2021-05-21 21:26:51,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:51,248 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:51,248 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:51,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-05-21 21:26:51,249 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:51,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:51,249 INFO L82 PathProgramCache]: Analyzing trace with hash 337262646, now seen corresponding path program 124 times [2021-05-21 21:26:51,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:51,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121973585] [2021-05-21 21:26:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:51,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:51,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121973585] [2021-05-21 21:26:51,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121973585] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:51,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:51,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:51,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250338448] [2021-05-21 21:26:51,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:51,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:51,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:51,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:51,405 INFO L87 Difference]: Start difference. First operand 3638 states and 12173 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:52,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:52,667 INFO L93 Difference]: Finished difference Result 4287 states and 14068 transitions. [2021-05-21 21:26:52,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:26:52,668 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:52,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:52,675 INFO L225 Difference]: With dead ends: 4287 [2021-05-21 21:26:52,675 INFO L226 Difference]: Without dead ends: 4223 [2021-05-21 21:26:52,675 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 829.7ms TimeCoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 21:26:52,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2021-05-21 21:26:52,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 3638. [2021-05-21 21:26:52,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.346989276876547) internal successors, (12173), 3637 states have internal predecessors, (12173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:52,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12173 transitions. [2021-05-21 21:26:52,731 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12173 transitions. Word has length 39 [2021-05-21 21:26:52,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:52,732 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12173 transitions. [2021-05-21 21:26:52,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:52,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12173 transitions. [2021-05-21 21:26:52,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:52,735 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:52,735 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:52,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-05-21 21:26:52,736 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:52,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:52,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1255746216, now seen corresponding path program 125 times [2021-05-21 21:26:52,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:52,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693779711] [2021-05-21 21:26:52,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:52,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:52,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693779711] [2021-05-21 21:26:52,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693779711] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:52,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:52,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:52,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231835018] [2021-05-21 21:26:52,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:52,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:52,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:52,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:52,895 INFO L87 Difference]: Start difference. First operand 3638 states and 12173 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:53,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:53,866 INFO L93 Difference]: Finished difference Result 4192 states and 13816 transitions. [2021-05-21 21:26:53,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 21:26:53,867 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:53,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:53,873 INFO L225 Difference]: With dead ends: 4192 [2021-05-21 21:26:53,874 INFO L226 Difference]: Without dead ends: 4137 [2021-05-21 21:26:53,874 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 606.8ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:26:53,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2021-05-21 21:26:53,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 3640. [2021-05-21 21:26:53,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.3459741687276723) internal successors, (12176), 3639 states have internal predecessors, (12176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12176 transitions. [2021-05-21 21:26:53,940 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12176 transitions. Word has length 39 [2021-05-21 21:26:53,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:53,940 INFO L482 AbstractCegarLoop]: Abstraction has 3640 states and 12176 transitions. [2021-05-21 21:26:53,940 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:53,940 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12176 transitions. [2021-05-21 21:26:53,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:53,945 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:53,945 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:53,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-05-21 21:26:53,945 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:53,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:53,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1866568858, now seen corresponding path program 126 times [2021-05-21 21:26:53,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:53,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999833770] [2021-05-21 21:26:53,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:54,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:54,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:54,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999833770] [2021-05-21 21:26:54,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999833770] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:54,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:54,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:54,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847901275] [2021-05-21 21:26:54,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:54,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:54,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:54,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:54,102 INFO L87 Difference]: Start difference. First operand 3640 states and 12176 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:55,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:55,072 INFO L93 Difference]: Finished difference Result 4162 states and 13755 transitions. [2021-05-21 21:26:55,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:26:55,072 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:55,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:55,079 INFO L225 Difference]: With dead ends: 4162 [2021-05-21 21:26:55,079 INFO L226 Difference]: Without dead ends: 4102 [2021-05-21 21:26:55,080 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 629.0ms TimeCoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:26:55,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2021-05-21 21:26:55,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 3638. [2021-05-21 21:26:55,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.346439373109706) internal successors, (12171), 3637 states have internal predecessors, (12171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12171 transitions. [2021-05-21 21:26:55,137 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12171 transitions. Word has length 39 [2021-05-21 21:26:55,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:55,137 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12171 transitions. [2021-05-21 21:26:55,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:55,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12171 transitions. [2021-05-21 21:26:55,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:55,142 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:55,142 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:55,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-05-21 21:26:55,143 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:55,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:55,143 INFO L82 PathProgramCache]: Analyzing trace with hash 348831896, now seen corresponding path program 127 times [2021-05-21 21:26:55,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:55,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190370383] [2021-05-21 21:26:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:55,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:55,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:55,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190370383] [2021-05-21 21:26:55,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190370383] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:55,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:55,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 21:26:55,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50433035] [2021-05-21 21:26:55,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 21:26:55,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:55,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 21:26:55,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-05-21 21:26:55,285 INFO L87 Difference]: Start difference. First operand 3638 states and 12171 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:56,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:56,178 INFO L93 Difference]: Finished difference Result 4073 states and 13542 transitions. [2021-05-21 21:26:56,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-21 21:26:56,179 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:56,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:56,186 INFO L225 Difference]: With dead ends: 4073 [2021-05-21 21:26:56,186 INFO L226 Difference]: Without dead ends: 3997 [2021-05-21 21:26:56,186 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 574.3ms TimeCoverageRelationStatistics Valid=199, Invalid=1693, Unknown=0, NotChecked=0, Total=1892 [2021-05-21 21:26:56,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2021-05-21 21:26:56,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3646. [2021-05-21 21:26:56,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3434842249657066) internal successors, (12187), 3645 states have internal predecessors, (12187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:56,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12187 transitions. [2021-05-21 21:26:56,239 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12187 transitions. Word has length 39 [2021-05-21 21:26:56,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:56,239 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12187 transitions. [2021-05-21 21:26:56,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:56,239 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12187 transitions. [2021-05-21 21:26:56,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:56,243 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:56,243 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:56,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-05-21 21:26:56,243 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:56,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:56,244 INFO L82 PathProgramCache]: Analyzing trace with hash -669221716, now seen corresponding path program 128 times [2021-05-21 21:26:56,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:56,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173495293] [2021-05-21 21:26:56,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:56,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:56,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173495293] [2021-05-21 21:26:56,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173495293] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:56,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:56,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:56,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635984764] [2021-05-21 21:26:56,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:56,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:56,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:56,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:56,403 INFO L87 Difference]: Start difference. First operand 3646 states and 12187 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:57,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:57,360 INFO L93 Difference]: Finished difference Result 4055 states and 13488 transitions. [2021-05-21 21:26:57,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:26:57,361 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:57,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:57,368 INFO L225 Difference]: With dead ends: 4055 [2021-05-21 21:26:57,368 INFO L226 Difference]: Without dead ends: 3977 [2021-05-21 21:26:57,369 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 611.4ms TimeCoverageRelationStatistics Valid=215, Invalid=1947, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:26:57,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2021-05-21 21:26:57,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3626. [2021-05-21 21:26:57,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.348689655172414) internal successors, (12139), 3625 states have internal predecessors, (12139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:57,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12139 transitions. [2021-05-21 21:26:57,426 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12139 transitions. Word has length 39 [2021-05-21 21:26:57,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:57,426 INFO L482 AbstractCegarLoop]: Abstraction has 3626 states and 12139 transitions. [2021-05-21 21:26:57,426 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:57,426 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12139 transitions. [2021-05-21 21:26:57,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:57,430 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:57,430 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:57,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-05-21 21:26:57,431 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:57,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:57,431 INFO L82 PathProgramCache]: Analyzing trace with hash -479556628, now seen corresponding path program 129 times [2021-05-21 21:26:57,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:57,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75402194] [2021-05-21 21:26:57,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:57,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:57,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:57,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75402194] [2021-05-21 21:26:57,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75402194] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:57,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:57,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:57,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751757376] [2021-05-21 21:26:57,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:57,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:57,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:57,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:57,581 INFO L87 Difference]: Start difference. First operand 3626 states and 12139 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:58,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:26:58,952 INFO L93 Difference]: Finished difference Result 4276 states and 14125 transitions. [2021-05-21 21:26:58,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-21 21:26:58,952 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:26:58,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:26:58,958 INFO L225 Difference]: With dead ends: 4276 [2021-05-21 21:26:58,958 INFO L226 Difference]: Without dead ends: 4170 [2021-05-21 21:26:58,959 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 837.1ms TimeCoverageRelationStatistics Valid=284, Invalid=2908, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 21:26:58,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-05-21 21:26:59,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3642. [2021-05-21 21:26:59,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3466080747047515) internal successors, (12185), 3641 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:59,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12185 transitions. [2021-05-21 21:26:59,008 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12185 transitions. Word has length 39 [2021-05-21 21:26:59,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:26:59,008 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12185 transitions. [2021-05-21 21:26:59,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:26:59,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12185 transitions. [2021-05-21 21:26:59,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:26:59,012 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:26:59,012 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:26:59,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-05-21 21:26:59,012 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:26:59,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:26:59,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1974447528, now seen corresponding path program 130 times [2021-05-21 21:26:59,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:26:59,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014107629] [2021-05-21 21:26:59,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:26:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:26:59,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:26:59,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:26:59,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014107629] [2021-05-21 21:26:59,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014107629] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:26:59,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:26:59,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:26:59,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161380052] [2021-05-21 21:26:59,175 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:26:59,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:26:59,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:26:59,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:26:59,175 INFO L87 Difference]: Start difference. First operand 3642 states and 12185 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:00,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:00,383 INFO L93 Difference]: Finished difference Result 4285 states and 14055 transitions. [2021-05-21 21:27:00,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:27:00,383 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:00,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:00,389 INFO L225 Difference]: With dead ends: 4285 [2021-05-21 21:27:00,389 INFO L226 Difference]: Without dead ends: 4221 [2021-05-21 21:27:00,389 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 803.9ms TimeCoverageRelationStatistics Valid=283, Invalid=2797, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:27:00,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2021-05-21 21:27:00,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 3642. [2021-05-21 21:27:00,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3466080747047515) internal successors, (12185), 3641 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:00,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12185 transitions. [2021-05-21 21:27:00,435 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12185 transitions. Word has length 39 [2021-05-21 21:27:00,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:00,435 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12185 transitions. [2021-05-21 21:27:00,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:00,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12185 transitions. [2021-05-21 21:27:00,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:00,439 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:00,439 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:00,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-05-21 21:27:00,439 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:00,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:00,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1055963958, now seen corresponding path program 131 times [2021-05-21 21:27:00,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:00,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055996663] [2021-05-21 21:27:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:00,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:00,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:00,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055996663] [2021-05-21 21:27:00,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055996663] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:00,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:00,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:00,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335858539] [2021-05-21 21:27:00,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:00,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:00,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:00,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:00,584 INFO L87 Difference]: Start difference. First operand 3642 states and 12185 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:01,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:01,478 INFO L93 Difference]: Finished difference Result 4182 states and 13783 transitions. [2021-05-21 21:27:01,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 21:27:01,484 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:01,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:01,491 INFO L225 Difference]: With dead ends: 4182 [2021-05-21 21:27:01,491 INFO L226 Difference]: Without dead ends: 4139 [2021-05-21 21:27:01,491 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 547.2ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:27:01,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2021-05-21 21:27:01,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 3648. [2021-05-21 21:27:01,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.344666849465314) internal successors, (12198), 3647 states have internal predecessors, (12198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:01,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12198 transitions. [2021-05-21 21:27:01,540 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12198 transitions. Word has length 39 [2021-05-21 21:27:01,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:01,540 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 12198 transitions. [2021-05-21 21:27:01,540 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:01,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12198 transitions. [2021-05-21 21:27:01,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:01,544 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:01,544 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:01,544 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-05-21 21:27:01,544 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:01,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:01,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1035815224, now seen corresponding path program 132 times [2021-05-21 21:27:01,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:01,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470663110] [2021-05-21 21:27:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:01,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:01,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470663110] [2021-05-21 21:27:01,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470663110] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:01,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:01,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:01,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268199023] [2021-05-21 21:27:01,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:01,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:01,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:01,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:01,689 INFO L87 Difference]: Start difference. First operand 3648 states and 12198 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:02,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:02,674 INFO L93 Difference]: Finished difference Result 4151 states and 13720 transitions. [2021-05-21 21:27:02,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:27:02,674 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:02,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:02,680 INFO L225 Difference]: With dead ends: 4151 [2021-05-21 21:27:02,680 INFO L226 Difference]: Without dead ends: 4108 [2021-05-21 21:27:02,681 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 636.5ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:27:02,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-05-21 21:27:02,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3644. [2021-05-21 21:27:02,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 3643 states have (on average 3.3455942904199834) internal successors, (12188), 3643 states have internal predecessors, (12188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 12188 transitions. [2021-05-21 21:27:02,734 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 12188 transitions. Word has length 39 [2021-05-21 21:27:02,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:02,734 INFO L482 AbstractCegarLoop]: Abstraction has 3644 states and 12188 transitions. [2021-05-21 21:27:02,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:02,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 12188 transitions. [2021-05-21 21:27:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:02,738 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:02,738 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:02,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-05-21 21:27:02,738 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:02,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:02,739 INFO L82 PathProgramCache]: Analyzing trace with hash 116688264, now seen corresponding path program 133 times [2021-05-21 21:27:02,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:02,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327699399] [2021-05-21 21:27:02,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:02,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:02,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327699399] [2021-05-21 21:27:02,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327699399] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:02,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:02,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:02,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085736606] [2021-05-21 21:27:02,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:02,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:02,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:02,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:02,885 INFO L87 Difference]: Start difference. First operand 3644 states and 12188 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:03,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:03,826 INFO L93 Difference]: Finished difference Result 4160 states and 13742 transitions. [2021-05-21 21:27:03,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:27:03,826 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:03,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:03,833 INFO L225 Difference]: With dead ends: 4160 [2021-05-21 21:27:03,833 INFO L226 Difference]: Without dead ends: 4100 [2021-05-21 21:27:03,834 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 586.9ms TimeCoverageRelationStatistics Valid=213, Invalid=1949, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:27:03,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4100 states. [2021-05-21 21:27:03,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4100 to 3642. [2021-05-21 21:27:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3460587750617963) internal successors, (12183), 3641 states have internal predecessors, (12183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:03,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12183 transitions. [2021-05-21 21:27:03,886 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12183 transitions. Word has length 39 [2021-05-21 21:27:03,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:03,886 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12183 transitions. [2021-05-21 21:27:03,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:03,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12183 transitions. [2021-05-21 21:27:03,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:03,890 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:03,890 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:03,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-05-21 21:27:03,890 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:03,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:03,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1962878278, now seen corresponding path program 134 times [2021-05-21 21:27:03,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:03,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040932318] [2021-05-21 21:27:03,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:04,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:04,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:04,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040932318] [2021-05-21 21:27:04,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040932318] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:04,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:04,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 21:27:04,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587500956] [2021-05-21 21:27:04,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 21:27:04,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:04,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 21:27:04,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-05-21 21:27:04,037 INFO L87 Difference]: Start difference. First operand 3642 states and 12183 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:04,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:04,846 INFO L93 Difference]: Finished difference Result 4128 states and 13682 transitions. [2021-05-21 21:27:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-21 21:27:04,846 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:04,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:04,853 INFO L225 Difference]: With dead ends: 4128 [2021-05-21 21:27:04,853 INFO L226 Difference]: Without dead ends: 4052 [2021-05-21 21:27:04,853 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 488.1ms TimeCoverageRelationStatistics Valid=178, Invalid=1544, Unknown=0, NotChecked=0, Total=1722 [2021-05-21 21:27:04,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2021-05-21 21:27:04,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 3650. [2021-05-21 21:27:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.3431077007399286) internal successors, (12199), 3649 states have internal predecessors, (12199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:04,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12199 transitions. [2021-05-21 21:27:04,905 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12199 transitions. Word has length 39 [2021-05-21 21:27:04,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:04,906 INFO L482 AbstractCegarLoop]: Abstraction has 3650 states and 12199 transitions. [2021-05-21 21:27:04,906 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:04,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12199 transitions. [2021-05-21 21:27:04,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:04,909 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:04,910 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:04,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-05-21 21:27:04,910 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:04,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:04,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1314035406, now seen corresponding path program 135 times [2021-05-21 21:27:04,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:04,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307266052] [2021-05-21 21:27:04,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:05,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:05,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307266052] [2021-05-21 21:27:05,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307266052] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:05,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:05,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:05,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576933902] [2021-05-21 21:27:05,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:05,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:05,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:05,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:05,064 INFO L87 Difference]: Start difference. First operand 3650 states and 12199 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:05,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:05,973 INFO L93 Difference]: Finished difference Result 4110 states and 13628 transitions. [2021-05-21 21:27:05,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:27:05,974 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:05,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:05,980 INFO L225 Difference]: With dead ends: 4110 [2021-05-21 21:27:05,980 INFO L226 Difference]: Without dead ends: 4040 [2021-05-21 21:27:05,980 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 565.1ms TimeCoverageRelationStatistics Valid=194, Invalid=1786, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 21:27:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-05-21 21:27:06,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3638. [2021-05-21 21:27:06,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.346439373109706) internal successors, (12171), 3637 states have internal predecessors, (12171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:06,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12171 transitions. [2021-05-21 21:27:06,027 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12171 transitions. Word has length 39 [2021-05-21 21:27:06,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:06,027 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12171 transitions. [2021-05-21 21:27:06,027 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:06,027 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12171 transitions. [2021-05-21 21:27:06,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:06,031 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:06,031 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:06,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-05-21 21:27:06,031 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:06,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:06,031 INFO L82 PathProgramCache]: Analyzing trace with hash 634844074, now seen corresponding path program 136 times [2021-05-21 21:27:06,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:06,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204304194] [2021-05-21 21:27:06,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:06,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:06,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204304194] [2021-05-21 21:27:06,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204304194] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:06,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:06,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 21:27:06,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299561238] [2021-05-21 21:27:06,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 21:27:06,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:06,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 21:27:06,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-05-21 21:27:06,178 INFO L87 Difference]: Start difference. First operand 3638 states and 12171 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:06,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:06,979 INFO L93 Difference]: Finished difference Result 4059 states and 13491 transitions. [2021-05-21 21:27:06,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-21 21:27:06,979 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:06,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:06,986 INFO L225 Difference]: With dead ends: 4059 [2021-05-21 21:27:06,986 INFO L226 Difference]: Without dead ends: 3983 [2021-05-21 21:27:06,986 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 493.3ms TimeCoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2021-05-21 21:27:07,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2021-05-21 21:27:07,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3670. [2021-05-21 21:27:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3669 states have (on average 3.341237394385391) internal successors, (12259), 3669 states have internal predecessors, (12259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:07,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 12259 transitions. [2021-05-21 21:27:07,043 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 12259 transitions. Word has length 39 [2021-05-21 21:27:07,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:07,043 INFO L482 AbstractCegarLoop]: Abstraction has 3670 states and 12259 transitions. [2021-05-21 21:27:07,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:07,043 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 12259 transitions. [2021-05-21 21:27:07,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:07,048 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:07,048 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:07,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-05-21 21:27:07,048 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:07,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:07,048 INFO L82 PathProgramCache]: Analyzing trace with hash -383209538, now seen corresponding path program 137 times [2021-05-21 21:27:07,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:07,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391016693] [2021-05-21 21:27:07,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:07,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:07,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391016693] [2021-05-21 21:27:07,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391016693] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:07,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:07,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:07,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758162296] [2021-05-21 21:27:07,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:07,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:07,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:07,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:07,195 INFO L87 Difference]: Start difference. First operand 3670 states and 12259 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:08,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:08,022 INFO L93 Difference]: Finished difference Result 4041 states and 13437 transitions. [2021-05-21 21:27:08,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-21 21:27:08,022 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:08,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:08,029 INFO L225 Difference]: With dead ends: 4041 [2021-05-21 21:27:08,029 INFO L226 Difference]: Without dead ends: 3975 [2021-05-21 21:27:08,030 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 518.9ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-05-21 21:27:08,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2021-05-21 21:27:08,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3662. [2021-05-21 21:27:08,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3661 states have (on average 3.341983064736411) internal successors, (12235), 3661 states have internal predecessors, (12235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12235 transitions. [2021-05-21 21:27:08,082 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12235 transitions. Word has length 39 [2021-05-21 21:27:08,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:08,082 INFO L482 AbstractCegarLoop]: Abstraction has 3662 states and 12235 transitions. [2021-05-21 21:27:08,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:08,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12235 transitions. [2021-05-21 21:27:08,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:08,085 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:08,085 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:08,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-05-21 21:27:08,086 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:08,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:08,086 INFO L82 PathProgramCache]: Analyzing trace with hash -665475192, now seen corresponding path program 138 times [2021-05-21 21:27:08,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:08,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435306614] [2021-05-21 21:27:08,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:08,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:08,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435306614] [2021-05-21 21:27:08,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435306614] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:08,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:08,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:08,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140263149] [2021-05-21 21:27:08,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:08,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:08,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:08,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:08,237 INFO L87 Difference]: Start difference. First operand 3662 states and 12235 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:09,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:09,078 INFO L93 Difference]: Finished difference Result 4050 states and 13458 transitions. [2021-05-21 21:27:09,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-21 21:27:09,079 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:09,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:09,085 INFO L225 Difference]: With dead ends: 4050 [2021-05-21 21:27:09,085 INFO L226 Difference]: Without dead ends: 3888 [2021-05-21 21:27:09,086 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 521.3ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-05-21 21:27:09,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-05-21 21:27:09,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3594. [2021-05-21 21:27:09,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3594 states, 3593 states have (on average 3.3529084330642918) internal successors, (12047), 3593 states have internal predecessors, (12047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:09,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 12047 transitions. [2021-05-21 21:27:09,140 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 12047 transitions. Word has length 39 [2021-05-21 21:27:09,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:09,140 INFO L482 AbstractCegarLoop]: Abstraction has 3594 states and 12047 transitions. [2021-05-21 21:27:09,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:09,140 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 12047 transitions. [2021-05-21 21:27:09,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:09,144 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:09,144 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:09,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-05-21 21:27:09,144 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:09,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:09,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1293011068, now seen corresponding path program 139 times [2021-05-21 21:27:09,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:09,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518527671] [2021-05-21 21:27:09,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:09,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:09,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518527671] [2021-05-21 21:27:09,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518527671] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:09,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:09,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:27:09,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443019729] [2021-05-21 21:27:09,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:27:09,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:09,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:27:09,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:27:09,313 INFO L87 Difference]: Start difference. First operand 3594 states and 12047 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:10,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:10,526 INFO L93 Difference]: Finished difference Result 4277 states and 14182 transitions. [2021-05-21 21:27:10,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:27:10,526 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:10,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:10,533 INFO L225 Difference]: With dead ends: 4277 [2021-05-21 21:27:10,533 INFO L226 Difference]: Without dead ends: 4210 [2021-05-21 21:27:10,533 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 745.1ms TimeCoverageRelationStatistics Valid=281, Invalid=2689, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:27:10,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2021-05-21 21:27:10,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 3652. [2021-05-21 21:27:10,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 3651 states have (on average 3.3470282114489183) internal successors, (12220), 3651 states have internal predecessors, (12220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:10,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 12220 transitions. [2021-05-21 21:27:10,590 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 12220 transitions. Word has length 39 [2021-05-21 21:27:10,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:10,590 INFO L482 AbstractCegarLoop]: Abstraction has 3652 states and 12220 transitions. [2021-05-21 21:27:10,590 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:10,590 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 12220 transitions. [2021-05-21 21:27:10,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:10,595 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:10,595 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:10,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-05-21 21:27:10,595 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:10,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:10,596 INFO L82 PathProgramCache]: Analyzing trace with hash -426604902, now seen corresponding path program 140 times [2021-05-21 21:27:10,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:10,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315178182] [2021-05-21 21:27:10,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:10,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:10,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315178182] [2021-05-21 21:27:10,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315178182] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:10,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:10,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:27:10,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412861166] [2021-05-21 21:27:10,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:27:10,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:10,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:27:10,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:27:10,780 INFO L87 Difference]: Start difference. First operand 3652 states and 12220 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:12,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:12,292 INFO L93 Difference]: Finished difference Result 4414 states and 14539 transitions. [2021-05-21 21:27:12,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-21 21:27:12,292 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:12,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:12,299 INFO L225 Difference]: With dead ends: 4414 [2021-05-21 21:27:12,299 INFO L226 Difference]: Without dead ends: 4371 [2021-05-21 21:27:12,300 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 969.1ms TimeCoverageRelationStatistics Valid=351, Invalid=3681, Unknown=0, NotChecked=0, Total=4032 [2021-05-21 21:27:12,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2021-05-21 21:27:12,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 3658. [2021-05-21 21:27:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.345091605140826) internal successors, (12233), 3657 states have internal predecessors, (12233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:12,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12233 transitions. [2021-05-21 21:27:12,354 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12233 transitions. Word has length 39 [2021-05-21 21:27:12,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:12,354 INFO L482 AbstractCegarLoop]: Abstraction has 3658 states and 12233 transitions. [2021-05-21 21:27:12,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:12,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12233 transitions. [2021-05-21 21:27:12,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:12,358 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:12,358 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:12,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-05-21 21:27:12,358 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:12,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:12,359 INFO L82 PathProgramCache]: Analyzing trace with hash 2087764092, now seen corresponding path program 141 times [2021-05-21 21:27:12,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:12,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120392091] [2021-05-21 21:27:12,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:12,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:12,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:12,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120392091] [2021-05-21 21:27:12,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120392091] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:12,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:12,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:27:12,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757557623] [2021-05-21 21:27:12,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:27:12,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:12,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:27:12,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:27:12,521 INFO L87 Difference]: Start difference. First operand 3658 states and 12233 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:13,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:13,993 INFO L93 Difference]: Finished difference Result 4345 states and 14359 transitions. [2021-05-21 21:27:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-21 21:27:13,994 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:13,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:14,002 INFO L225 Difference]: With dead ends: 4345 [2021-05-21 21:27:14,002 INFO L226 Difference]: Without dead ends: 4281 [2021-05-21 21:27:14,002 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 933.0ms TimeCoverageRelationStatistics Valid=333, Invalid=3449, Unknown=0, NotChecked=0, Total=3782 [2021-05-21 21:27:14,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2021-05-21 21:27:14,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 3640. [2021-05-21 21:27:14,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.3498213794998626) internal successors, (12190), 3639 states have internal predecessors, (12190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:14,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12190 transitions. [2021-05-21 21:27:14,066 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12190 transitions. Word has length 39 [2021-05-21 21:27:14,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:14,066 INFO L482 AbstractCegarLoop]: Abstraction has 3640 states and 12190 transitions. [2021-05-21 21:27:14,067 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:14,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12190 transitions. [2021-05-21 21:27:14,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:14,071 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:14,071 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:14,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-05-21 21:27:14,071 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:14,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:14,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1586768804, now seen corresponding path program 142 times [2021-05-21 21:27:14,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:14,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377540102] [2021-05-21 21:27:14,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:14,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:14,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377540102] [2021-05-21 21:27:14,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377540102] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:14,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:14,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:27:14,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077782788] [2021-05-21 21:27:14,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:27:14,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:14,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:27:14,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:27:14,252 INFO L87 Difference]: Start difference. First operand 3640 states and 12190 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:15,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:15,334 INFO L93 Difference]: Finished difference Result 4245 states and 14072 transitions. [2021-05-21 21:27:15,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 21:27:15,334 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:15,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:15,341 INFO L225 Difference]: With dead ends: 4245 [2021-05-21 21:27:15,342 INFO L226 Difference]: Without dead ends: 4178 [2021-05-21 21:27:15,342 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 678.7ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:27:15,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2021-05-21 21:27:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 3648. [2021-05-21 21:27:15,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.346860433232794) internal successors, (12206), 3647 states have internal predecessors, (12206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:15,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12206 transitions. [2021-05-21 21:27:15,401 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12206 transitions. Word has length 39 [2021-05-21 21:27:15,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:15,401 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 12206 transitions. [2021-05-21 21:27:15,401 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:15,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12206 transitions. [2021-05-21 21:27:15,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:15,406 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:15,406 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:15,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-05-21 21:27:15,406 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:15,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:15,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1717363652, now seen corresponding path program 143 times [2021-05-21 21:27:15,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:15,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749381439] [2021-05-21 21:27:15,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:15,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:15,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749381439] [2021-05-21 21:27:15,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749381439] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:15,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:15,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:27:15,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074848675] [2021-05-21 21:27:15,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:27:15,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:15,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:27:15,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:27:15,570 INFO L87 Difference]: Start difference. First operand 3648 states and 12206 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:16,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:16,668 INFO L93 Difference]: Finished difference Result 4233 states and 14032 transitions. [2021-05-21 21:27:16,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:27:16,669 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:16,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:16,676 INFO L225 Difference]: With dead ends: 4233 [2021-05-21 21:27:16,676 INFO L226 Difference]: Without dead ends: 4170 [2021-05-21 21:27:16,676 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 677.8ms TimeCoverageRelationStatistics Valid=254, Invalid=2398, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:27:16,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-05-21 21:27:16,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3640. [2021-05-21 21:27:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.348722176422094) internal successors, (12186), 3639 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12186 transitions. [2021-05-21 21:27:16,732 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12186 transitions. Word has length 39 [2021-05-21 21:27:16,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:16,732 INFO L482 AbstractCegarLoop]: Abstraction has 3640 states and 12186 transitions. [2021-05-21 21:27:16,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:16,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12186 transitions. [2021-05-21 21:27:16,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:16,736 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:16,736 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:16,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-05-21 21:27:16,737 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:16,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:16,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1853042244, now seen corresponding path program 144 times [2021-05-21 21:27:16,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:16,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060870024] [2021-05-21 21:27:16,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:16,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:16,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:16,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060870024] [2021-05-21 21:27:16,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060870024] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:16,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:16,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:27:16,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954339233] [2021-05-21 21:27:16,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:27:16,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:16,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:27:16,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:27:16,901 INFO L87 Difference]: Start difference. First operand 3640 states and 12186 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:18,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:18,300 INFO L93 Difference]: Finished difference Result 4396 states and 14421 transitions. [2021-05-21 21:27:18,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-21 21:27:18,300 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:18,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:18,307 INFO L225 Difference]: With dead ends: 4396 [2021-05-21 21:27:18,307 INFO L226 Difference]: Without dead ends: 4353 [2021-05-21 21:27:18,308 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 911.9ms TimeCoverageRelationStatistics Valid=333, Invalid=3449, Unknown=0, NotChecked=0, Total=3782 [2021-05-21 21:27:18,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2021-05-21 21:27:18,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 3648. [2021-05-21 21:27:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.346860433232794) internal successors, (12206), 3647 states have internal predecessors, (12206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:18,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12206 transitions. [2021-05-21 21:27:18,369 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12206 transitions. Word has length 39 [2021-05-21 21:27:18,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:18,369 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 12206 transitions. [2021-05-21 21:27:18,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12206 transitions. [2021-05-21 21:27:18,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:18,374 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:18,374 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:18,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-05-21 21:27:18,374 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:18,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:18,374 INFO L82 PathProgramCache]: Analyzing trace with hash 661326750, now seen corresponding path program 145 times [2021-05-21 21:27:18,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:18,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353725170] [2021-05-21 21:27:18,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:18,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:18,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:18,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353725170] [2021-05-21 21:27:18,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353725170] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:18,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:18,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:27:18,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011890848] [2021-05-21 21:27:18,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:27:18,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:18,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:27:18,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:27:18,570 INFO L87 Difference]: Start difference. First operand 3648 states and 12206 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:19,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:19,954 INFO L93 Difference]: Finished difference Result 4384 states and 14383 transitions. [2021-05-21 21:27:19,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-21 21:27:19,954 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:19,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:19,960 INFO L225 Difference]: With dead ends: 4384 [2021-05-21 21:27:19,961 INFO L226 Difference]: Without dead ends: 4332 [2021-05-21 21:27:19,961 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 909.5ms TimeCoverageRelationStatistics Valid=325, Invalid=3335, Unknown=0, NotChecked=0, Total=3660 [2021-05-21 21:27:19,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2021-05-21 21:27:20,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 3640. [2021-05-21 21:27:20,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.348722176422094) internal successors, (12186), 3639 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:20,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12186 transitions. [2021-05-21 21:27:20,008 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12186 transitions. Word has length 39 [2021-05-21 21:27:20,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:20,008 INFO L482 AbstractCegarLoop]: Abstraction has 3640 states and 12186 transitions. [2021-05-21 21:27:20,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:20,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12186 transitions. [2021-05-21 21:27:20,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:20,012 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:20,012 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:20,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-05-21 21:27:20,012 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:20,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:20,013 INFO L82 PathProgramCache]: Analyzing trace with hash -934558674, now seen corresponding path program 146 times [2021-05-21 21:27:20,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:20,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041313937] [2021-05-21 21:27:20,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:20,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:20,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:20,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041313937] [2021-05-21 21:27:20,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041313937] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:20,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:20,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:27:20,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167937101] [2021-05-21 21:27:20,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:27:20,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:20,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:27:20,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:27:20,173 INFO L87 Difference]: Start difference. First operand 3640 states and 12186 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:21,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:21,329 INFO L93 Difference]: Finished difference Result 4361 states and 14306 transitions. [2021-05-21 21:27:21,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:27:21,330 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:21,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:21,337 INFO L225 Difference]: With dead ends: 4361 [2021-05-21 21:27:21,337 INFO L226 Difference]: Without dead ends: 4306 [2021-05-21 21:27:21,337 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 713.7ms TimeCoverageRelationStatistics Valid=271, Invalid=2591, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 21:27:21,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2021-05-21 21:27:21,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 3642. [2021-05-21 21:27:21,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.347706673990662) internal successors, (12189), 3641 states have internal predecessors, (12189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:21,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12189 transitions. [2021-05-21 21:27:21,394 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12189 transitions. Word has length 39 [2021-05-21 21:27:21,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:21,394 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12189 transitions. [2021-05-21 21:27:21,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:21,394 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12189 transitions. [2021-05-21 21:27:21,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:21,399 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:21,399 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:21,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-05-21 21:27:21,399 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:21,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:21,399 INFO L82 PathProgramCache]: Analyzing trace with hash 238093548, now seen corresponding path program 147 times [2021-05-21 21:27:21,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:21,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935028248] [2021-05-21 21:27:21,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:21,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:21,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935028248] [2021-05-21 21:27:21,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935028248] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:21,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:21,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:27:21,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626834643] [2021-05-21 21:27:21,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:27:21,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:21,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:27:21,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:27:21,580 INFO L87 Difference]: Start difference. First operand 3642 states and 12189 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:22,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:22,668 INFO L93 Difference]: Finished difference Result 4296 states and 14154 transitions. [2021-05-21 21:27:22,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 21:27:22,669 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:22,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:22,676 INFO L225 Difference]: With dead ends: 4296 [2021-05-21 21:27:22,676 INFO L226 Difference]: Without dead ends: 4250 [2021-05-21 21:27:22,677 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 677.3ms TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:27:22,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4250 states. [2021-05-21 21:27:22,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4250 to 3646. [2021-05-21 21:27:22,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3462277091906723) internal successors, (12197), 3645 states have internal predecessors, (12197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:22,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12197 transitions. [2021-05-21 21:27:22,736 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12197 transitions. Word has length 39 [2021-05-21 21:27:22,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:22,736 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12197 transitions. [2021-05-21 21:27:22,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:22,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12197 transitions. [2021-05-21 21:27:22,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:22,740 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:22,740 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:22,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-05-21 21:27:22,741 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:22,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:22,741 INFO L82 PathProgramCache]: Analyzing trace with hash -9372614, now seen corresponding path program 148 times [2021-05-21 21:27:22,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:22,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691681175] [2021-05-21 21:27:22,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:22,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:22,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691681175] [2021-05-21 21:27:22,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691681175] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:22,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:22,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:27:22,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571529549] [2021-05-21 21:27:22,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:27:22,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:22,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:27:22,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:27:22,910 INFO L87 Difference]: Start difference. First operand 3646 states and 12197 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:24,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:24,021 INFO L93 Difference]: Finished difference Result 4256 states and 14065 transitions. [2021-05-21 21:27:24,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 21:27:24,022 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:24,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:24,029 INFO L225 Difference]: With dead ends: 4256 [2021-05-21 21:27:24,029 INFO L226 Difference]: Without dead ends: 4207 [2021-05-21 21:27:24,029 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 700.7ms TimeCoverageRelationStatistics Valid=250, Invalid=2300, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:27:24,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-05-21 21:27:24,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3636. [2021-05-21 21:27:24,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3636 states, 3635 states have (on average 3.3485557083906463) internal successors, (12172), 3635 states have internal predecessors, (12172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:24,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 12172 transitions. [2021-05-21 21:27:24,085 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 12172 transitions. Word has length 39 [2021-05-21 21:27:24,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:24,086 INFO L482 AbstractCegarLoop]: Abstraction has 3636 states and 12172 transitions. [2021-05-21 21:27:24,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:24,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 12172 transitions. [2021-05-21 21:27:24,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:24,090 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:24,090 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:24,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-05-21 21:27:24,090 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:24,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:24,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1529502908, now seen corresponding path program 149 times [2021-05-21 21:27:24,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:24,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685288526] [2021-05-21 21:27:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:24,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:24,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685288526] [2021-05-21 21:27:24,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685288526] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:24,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:24,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:27:24,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183473534] [2021-05-21 21:27:24,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:27:24,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:24,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:27:24,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:27:24,253 INFO L87 Difference]: Start difference. First operand 3636 states and 12172 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:25,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:25,307 INFO L93 Difference]: Finished difference Result 4279 states and 14191 transitions. [2021-05-21 21:27:25,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:27:25,307 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:25,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:25,314 INFO L225 Difference]: With dead ends: 4279 [2021-05-21 21:27:25,314 INFO L226 Difference]: Without dead ends: 4212 [2021-05-21 21:27:25,315 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 613.1ms TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:27:25,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2021-05-21 21:27:25,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 3676. [2021-05-21 21:27:25,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3675 states have (on average 3.3414965986394556) internal successors, (12280), 3675 states have internal predecessors, (12280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:25,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12280 transitions. [2021-05-21 21:27:25,367 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12280 transitions. Word has length 39 [2021-05-21 21:27:25,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:25,368 INFO L482 AbstractCegarLoop]: Abstraction has 3676 states and 12280 transitions. [2021-05-21 21:27:25,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:25,368 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12280 transitions. [2021-05-21 21:27:25,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:25,372 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:25,372 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:25,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-05-21 21:27:25,372 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:25,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:25,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1398908060, now seen corresponding path program 150 times [2021-05-21 21:27:25,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:25,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745831501] [2021-05-21 21:27:25,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:25,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:25,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745831501] [2021-05-21 21:27:25,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745831501] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:25,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:25,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:27:25,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079981087] [2021-05-21 21:27:25,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:27:25,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:25,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:27:25,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:27:25,540 INFO L87 Difference]: Start difference. First operand 3676 states and 12280 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:26,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:26,599 INFO L93 Difference]: Finished difference Result 4267 states and 14151 transitions. [2021-05-21 21:27:26,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 21:27:26,599 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:26,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:26,606 INFO L225 Difference]: With dead ends: 4267 [2021-05-21 21:27:26,606 INFO L226 Difference]: Without dead ends: 4204 [2021-05-21 21:27:26,606 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 616.4ms TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:27:26,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-05-21 21:27:26,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 3668. [2021-05-21 21:27:26,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.342241614398691) internal successors, (12256), 3667 states have internal predecessors, (12256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12256 transitions. [2021-05-21 21:27:26,661 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12256 transitions. Word has length 39 [2021-05-21 21:27:26,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:26,661 INFO L482 AbstractCegarLoop]: Abstraction has 3668 states and 12256 transitions. [2021-05-21 21:27:26,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:26,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12256 transitions. [2021-05-21 21:27:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:26,666 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:26,666 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:26,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-05-21 21:27:26,666 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:26,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:26,666 INFO L82 PathProgramCache]: Analyzing trace with hash 869007612, now seen corresponding path program 151 times [2021-05-21 21:27:26,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:26,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097830859] [2021-05-21 21:27:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:26,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:26,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:26,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097830859] [2021-05-21 21:27:26,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097830859] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:26,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:26,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:27:26,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752719553] [2021-05-21 21:27:26,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:27:26,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:26,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:27:26,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:27:26,826 INFO L87 Difference]: Start difference. First operand 3668 states and 12256 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:27,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:27,886 INFO L93 Difference]: Finished difference Result 4279 states and 14179 transitions. [2021-05-21 21:27:27,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:27:27,886 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:27,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:27,893 INFO L225 Difference]: With dead ends: 4279 [2021-05-21 21:27:27,893 INFO L226 Difference]: Without dead ends: 4140 [2021-05-21 21:27:27,893 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 590.5ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:27:27,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2021-05-21 21:27:27,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3616. [2021-05-21 21:27:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3615 states have (on average 3.34716459197787) internal successors, (12100), 3615 states have internal predecessors, (12100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:27,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 12100 transitions. [2021-05-21 21:27:27,960 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 12100 transitions. Word has length 39 [2021-05-21 21:27:27,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:27,960 INFO L482 AbstractCegarLoop]: Abstraction has 3616 states and 12100 transitions. [2021-05-21 21:27:27,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 12100 transitions. [2021-05-21 21:27:27,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:27,964 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:27,964 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:27,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-05-21 21:27:27,964 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:27,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:27,965 INFO L82 PathProgramCache]: Analyzing trace with hash -508920310, now seen corresponding path program 152 times [2021-05-21 21:27:27,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:27,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734361821] [2021-05-21 21:27:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:28,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:28,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:28,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734361821] [2021-05-21 21:27:28,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734361821] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:28,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:28,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:27:28,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912606510] [2021-05-21 21:27:28,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:27:28,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:28,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:27:28,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:27:28,137 INFO L87 Difference]: Start difference. First operand 3616 states and 12100 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:29,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:29,062 INFO L93 Difference]: Finished difference Result 4091 states and 13567 transitions. [2021-05-21 21:27:29,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 21:27:29,062 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:29,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:29,069 INFO L225 Difference]: With dead ends: 4091 [2021-05-21 21:27:29,069 INFO L226 Difference]: Without dead ends: 4024 [2021-05-21 21:27:29,070 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 574.4ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:27:29,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-05-21 21:27:29,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3668. [2021-05-21 21:27:29,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.3367875647668392) internal successors, (12236), 3667 states have internal predecessors, (12236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:29,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12236 transitions. [2021-05-21 21:27:29,124 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12236 transitions. Word has length 39 [2021-05-21 21:27:29,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:29,124 INFO L482 AbstractCegarLoop]: Abstraction has 3668 states and 12236 transitions. [2021-05-21 21:27:29,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:29,125 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12236 transitions. [2021-05-21 21:27:29,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:29,129 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:29,129 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:29,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-05-21 21:27:29,129 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:29,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:29,129 INFO L82 PathProgramCache]: Analyzing trace with hash -681063528, now seen corresponding path program 153 times [2021-05-21 21:27:29,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:29,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994268140] [2021-05-21 21:27:29,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:29,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:29,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994268140] [2021-05-21 21:27:29,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994268140] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:29,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:29,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:27:29,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561503696] [2021-05-21 21:27:29,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:27:29,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:29,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:27:29,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:27:29,290 INFO L87 Difference]: Start difference. First operand 3668 states and 12236 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:30,220 INFO L93 Difference]: Finished difference Result 4079 states and 13527 transitions. [2021-05-21 21:27:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:27:30,221 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:30,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:30,226 INFO L225 Difference]: With dead ends: 4079 [2021-05-21 21:27:30,226 INFO L226 Difference]: Without dead ends: 4016 [2021-05-21 21:27:30,227 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 594.6ms TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:27:30,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2021-05-21 21:27:30,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 3660. [2021-05-21 21:27:30,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 3659 states have (on average 3.337523913637606) internal successors, (12212), 3659 states have internal predecessors, (12212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:30,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 12212 transitions. [2021-05-21 21:27:30,273 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 12212 transitions. Word has length 39 [2021-05-21 21:27:30,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:30,273 INFO L482 AbstractCegarLoop]: Abstraction has 3660 states and 12212 transitions. [2021-05-21 21:27:30,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:30,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 12212 transitions. [2021-05-21 21:27:30,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:30,277 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:30,277 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:30,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-05-21 21:27:30,277 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:30,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:30,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1811069612, now seen corresponding path program 154 times [2021-05-21 21:27:30,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:30,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102202358] [2021-05-21 21:27:30,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:30,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:30,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102202358] [2021-05-21 21:27:30,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102202358] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:30,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:30,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:27:30,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99922021] [2021-05-21 21:27:30,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:27:30,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:30,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:27:30,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:27:30,449 INFO L87 Difference]: Start difference. First operand 3660 states and 12212 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:31,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:31,369 INFO L93 Difference]: Finished difference Result 4079 states and 13519 transitions. [2021-05-21 21:27:31,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-21 21:27:31,369 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:31,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:31,376 INFO L225 Difference]: With dead ends: 4079 [2021-05-21 21:27:31,376 INFO L226 Difference]: Without dead ends: 3936 [2021-05-21 21:27:31,376 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 572.6ms TimeCoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:27:31,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2021-05-21 21:27:31,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3608. [2021-05-21 21:27:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3608 states, 3607 states have (on average 3.349043526476296) internal successors, (12080), 3607 states have internal predecessors, (12080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:31,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 12080 transitions. [2021-05-21 21:27:31,429 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 12080 transitions. Word has length 39 [2021-05-21 21:27:31,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:31,429 INFO L482 AbstractCegarLoop]: Abstraction has 3608 states and 12080 transitions. [2021-05-21 21:27:31,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:31,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 12080 transitions. [2021-05-21 21:27:31,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:31,434 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:31,434 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:31,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-05-21 21:27:31,434 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:31,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:31,434 INFO L82 PathProgramCache]: Analyzing trace with hash 439883512, now seen corresponding path program 155 times [2021-05-21 21:27:31,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:31,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612671000] [2021-05-21 21:27:31,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:31,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:31,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:31,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612671000] [2021-05-21 21:27:31,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612671000] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:31,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:31,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:31,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233947591] [2021-05-21 21:27:31,590 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:31,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:31,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:31,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:31,590 INFO L87 Difference]: Start difference. First operand 3608 states and 12080 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:32,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:32,705 INFO L93 Difference]: Finished difference Result 4203 states and 13971 transitions. [2021-05-21 21:27:32,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 21:27:32,705 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:32,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:32,712 INFO L225 Difference]: With dead ends: 4203 [2021-05-21 21:27:32,712 INFO L226 Difference]: Without dead ends: 4136 [2021-05-21 21:27:32,712 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 679.5ms TimeCoverageRelationStatistics Valid=251, Invalid=2299, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:27:32,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2021-05-21 21:27:32,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3696. [2021-05-21 21:27:32,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 3695 states have (on average 3.349120433017591) internal successors, (12375), 3695 states have internal predecessors, (12375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:32,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 12375 transitions. [2021-05-21 21:27:32,765 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 12375 transitions. Word has length 39 [2021-05-21 21:27:32,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:32,765 INFO L482 AbstractCegarLoop]: Abstraction has 3696 states and 12375 transitions. [2021-05-21 21:27:32,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:32,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 12375 transitions. [2021-05-21 21:27:32,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:32,770 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:32,770 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:32,770 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-05-21 21:27:32,770 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:32,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:32,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1279732458, now seen corresponding path program 156 times [2021-05-21 21:27:32,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:32,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754769356] [2021-05-21 21:27:32,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:32,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:32,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754769356] [2021-05-21 21:27:32,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754769356] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:32,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:32,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:32,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966407422] [2021-05-21 21:27:32,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:32,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:32,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:32,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:32,916 INFO L87 Difference]: Start difference. First operand 3696 states and 12375 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:34,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:34,411 INFO L93 Difference]: Finished difference Result 4340 states and 14328 transitions. [2021-05-21 21:27:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-21 21:27:34,411 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:34,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:34,417 INFO L225 Difference]: With dead ends: 4340 [2021-05-21 21:27:34,417 INFO L226 Difference]: Without dead ends: 4297 [2021-05-21 21:27:34,418 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 919.4ms TimeCoverageRelationStatistics Valid=332, Invalid=3328, Unknown=0, NotChecked=0, Total=3660 [2021-05-21 21:27:34,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2021-05-21 21:27:34,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 3702. [2021-05-21 21:27:34,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3702 states, 3701 states have (on average 3.347203458524723) internal successors, (12388), 3701 states have internal predecessors, (12388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3702 states to 3702 states and 12388 transitions. [2021-05-21 21:27:34,469 INFO L78 Accepts]: Start accepts. Automaton has 3702 states and 12388 transitions. Word has length 39 [2021-05-21 21:27:34,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:34,469 INFO L482 AbstractCegarLoop]: Abstraction has 3702 states and 12388 transitions. [2021-05-21 21:27:34,469 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:34,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3702 states and 12388 transitions. [2021-05-21 21:27:34,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:34,474 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:34,474 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:34,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-05-21 21:27:34,474 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:34,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:34,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1234636536, now seen corresponding path program 157 times [2021-05-21 21:27:34,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:34,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543266497] [2021-05-21 21:27:34,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:34,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:34,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543266497] [2021-05-21 21:27:34,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543266497] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:34,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:34,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:34,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776886180] [2021-05-21 21:27:34,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:34,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:34,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:34,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:34,620 INFO L87 Difference]: Start difference. First operand 3702 states and 12388 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:36,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:36,022 INFO L93 Difference]: Finished difference Result 4271 states and 14148 transitions. [2021-05-21 21:27:36,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-21 21:27:36,023 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:36,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:36,030 INFO L225 Difference]: With dead ends: 4271 [2021-05-21 21:27:36,030 INFO L226 Difference]: Without dead ends: 4207 [2021-05-21 21:27:36,030 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 880.9ms TimeCoverageRelationStatistics Valid=314, Invalid=3108, Unknown=0, NotChecked=0, Total=3422 [2021-05-21 21:27:36,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-05-21 21:27:36,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3684. [2021-05-21 21:27:36,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 3.3518870486016836) internal successors, (12345), 3683 states have internal predecessors, (12345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:36,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 12345 transitions. [2021-05-21 21:27:36,087 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 12345 transitions. Word has length 39 [2021-05-21 21:27:36,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:36,087 INFO L482 AbstractCegarLoop]: Abstraction has 3684 states and 12345 transitions. [2021-05-21 21:27:36,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:36,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 12345 transitions. [2021-05-21 21:27:36,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:36,092 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:36,092 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:36,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-05-21 21:27:36,092 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:36,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:36,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1855070936, now seen corresponding path program 158 times [2021-05-21 21:27:36,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:36,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379321938] [2021-05-21 21:27:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:36,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:36,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379321938] [2021-05-21 21:27:36,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379321938] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:36,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:36,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:36,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475364439] [2021-05-21 21:27:36,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:36,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:36,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:36,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:36,242 INFO L87 Difference]: Start difference. First operand 3684 states and 12345 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:37,212 INFO L93 Difference]: Finished difference Result 4183 states and 13899 transitions. [2021-05-21 21:27:37,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 21:27:37,212 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:37,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:37,219 INFO L225 Difference]: With dead ends: 4183 [2021-05-21 21:27:37,219 INFO L226 Difference]: Without dead ends: 4116 [2021-05-21 21:27:37,220 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 587.4ms TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:27:37,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2021-05-21 21:27:37,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 3712. [2021-05-21 21:27:37,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 3711 states have (on average 3.3481541363513876) internal successors, (12425), 3711 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:37,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 12425 transitions. [2021-05-21 21:27:37,274 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 12425 transitions. Word has length 39 [2021-05-21 21:27:37,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:37,274 INFO L482 AbstractCegarLoop]: Abstraction has 3712 states and 12425 transitions. [2021-05-21 21:27:37,274 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:37,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 12425 transitions. [2021-05-21 21:27:37,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:37,278 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:37,278 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:37,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-05-21 21:27:37,279 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:37,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:37,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1724476088, now seen corresponding path program 159 times [2021-05-21 21:27:37,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:37,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463542192] [2021-05-21 21:27:37,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:37,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:37,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463542192] [2021-05-21 21:27:37,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463542192] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:37,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:37,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:37,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386994559] [2021-05-21 21:27:37,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:37,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:37,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:37,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:37,424 INFO L87 Difference]: Start difference. First operand 3712 states and 12425 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:38,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:38,405 INFO L93 Difference]: Finished difference Result 4171 states and 13859 transitions. [2021-05-21 21:27:38,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:27:38,405 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:38,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:38,412 INFO L225 Difference]: With dead ends: 4171 [2021-05-21 21:27:38,412 INFO L226 Difference]: Without dead ends: 4108 [2021-05-21 21:27:38,413 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 602.9ms TimeCoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:27:38,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-05-21 21:27:38,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3704. [2021-05-21 21:27:38,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3703 states have (on average 3.3499864974345126) internal successors, (12405), 3703 states have internal predecessors, (12405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:38,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 12405 transitions. [2021-05-21 21:27:38,474 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 12405 transitions. Word has length 39 [2021-05-21 21:27:38,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:38,474 INFO L482 AbstractCegarLoop]: Abstraction has 3704 states and 12405 transitions. [2021-05-21 21:27:38,474 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:38,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 12405 transitions. [2021-05-21 21:27:38,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:38,479 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:38,479 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:38,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-05-21 21:27:38,479 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:38,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:38,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1588797496, now seen corresponding path program 160 times [2021-05-21 21:27:38,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:38,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786118265] [2021-05-21 21:27:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:38,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:38,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786118265] [2021-05-21 21:27:38,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786118265] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:38,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:38,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:38,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447601161] [2021-05-21 21:27:38,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:38,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:38,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:38,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:38,646 INFO L87 Difference]: Start difference. First operand 3704 states and 12405 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:39,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:39,940 INFO L93 Difference]: Finished difference Result 4334 states and 14248 transitions. [2021-05-21 21:27:39,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-21 21:27:39,941 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:39,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:39,947 INFO L225 Difference]: With dead ends: 4334 [2021-05-21 21:27:39,948 INFO L226 Difference]: Without dead ends: 4291 [2021-05-21 21:27:39,948 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 841.3ms TimeCoverageRelationStatistics Valid=323, Invalid=3099, Unknown=0, NotChecked=0, Total=3422 [2021-05-21 21:27:39,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2021-05-21 21:27:39,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 3712. [2021-05-21 21:27:39,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 3711 states have (on average 3.3481541363513876) internal successors, (12425), 3711 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:40,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 12425 transitions. [2021-05-21 21:27:40,003 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 12425 transitions. Word has length 39 [2021-05-21 21:27:40,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:40,003 INFO L482 AbstractCegarLoop]: Abstraction has 3712 states and 12425 transitions. [2021-05-21 21:27:40,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:40,004 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 12425 transitions. [2021-05-21 21:27:40,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:40,008 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:40,008 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:40,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-05-21 21:27:40,009 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:40,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:40,009 INFO L82 PathProgramCache]: Analyzing trace with hash -191800806, now seen corresponding path program 161 times [2021-05-21 21:27:40,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:40,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062600060] [2021-05-21 21:27:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:40,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:40,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:40,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062600060] [2021-05-21 21:27:40,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062600060] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:40,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:40,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:40,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81427386] [2021-05-21 21:27:40,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:40,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:40,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:40,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:40,154 INFO L87 Difference]: Start difference. First operand 3712 states and 12425 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:41,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:41,453 INFO L93 Difference]: Finished difference Result 4322 states and 14210 transitions. [2021-05-21 21:27:41,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-21 21:27:41,453 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:41,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:41,460 INFO L225 Difference]: With dead ends: 4322 [2021-05-21 21:27:41,460 INFO L226 Difference]: Without dead ends: 4270 [2021-05-21 21:27:41,461 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 856.7ms TimeCoverageRelationStatistics Valid=315, Invalid=2991, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 21:27:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2021-05-21 21:27:41,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 3704. [2021-05-21 21:27:41,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3703 states have (on average 3.3499864974345126) internal successors, (12405), 3703 states have internal predecessors, (12405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 12405 transitions. [2021-05-21 21:27:41,517 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 12405 transitions. Word has length 39 [2021-05-21 21:27:41,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:41,517 INFO L482 AbstractCegarLoop]: Abstraction has 3704 states and 12405 transitions. [2021-05-21 21:27:41,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 12405 transitions. [2021-05-21 21:27:41,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:41,521 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:41,521 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:41,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-05-21 21:27:41,521 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:41,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:41,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1787686230, now seen corresponding path program 162 times [2021-05-21 21:27:41,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:41,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910105333] [2021-05-21 21:27:41,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:41,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:41,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910105333] [2021-05-21 21:27:41,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910105333] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:41,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:41,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:41,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222123711] [2021-05-21 21:27:41,681 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:41,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:41,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:41,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:41,682 INFO L87 Difference]: Start difference. First operand 3704 states and 12405 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:42,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:42,728 INFO L93 Difference]: Finished difference Result 4299 states and 14133 transitions. [2021-05-21 21:27:42,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-21 21:27:42,728 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:42,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:42,735 INFO L225 Difference]: With dead ends: 4299 [2021-05-21 21:27:42,735 INFO L226 Difference]: Without dead ends: 4244 [2021-05-21 21:27:42,735 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 656.9ms TimeCoverageRelationStatistics Valid=258, Invalid=2292, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:27:42,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2021-05-21 21:27:42,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 3706. [2021-05-21 21:27:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3705 states have (on average 3.3489878542510123) internal successors, (12408), 3705 states have internal predecessors, (12408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:42,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 12408 transitions. [2021-05-21 21:27:42,811 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 12408 transitions. Word has length 39 [2021-05-21 21:27:42,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:42,811 INFO L482 AbstractCegarLoop]: Abstraction has 3706 states and 12408 transitions. [2021-05-21 21:27:42,811 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:42,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 12408 transitions. [2021-05-21 21:27:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:42,816 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:42,816 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:42,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-05-21 21:27:42,816 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:42,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:42,816 INFO L82 PathProgramCache]: Analyzing trace with hash -615034008, now seen corresponding path program 163 times [2021-05-21 21:27:42,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:42,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962641114] [2021-05-21 21:27:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:42,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:42,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962641114] [2021-05-21 21:27:42,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962641114] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:42,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:42,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:42,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648622718] [2021-05-21 21:27:42,962 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:42,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:42,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:42,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:42,963 INFO L87 Difference]: Start difference. First operand 3706 states and 12408 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:43,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:43,928 INFO L93 Difference]: Finished difference Result 4234 states and 13981 transitions. [2021-05-21 21:27:43,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:27:43,929 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:43,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:43,935 INFO L225 Difference]: With dead ends: 4234 [2021-05-21 21:27:43,936 INFO L226 Difference]: Without dead ends: 4188 [2021-05-21 21:27:43,936 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 597.4ms TimeCoverageRelationStatistics Valid=233, Invalid=2023, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:27:43,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2021-05-21 21:27:43,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 3710. [2021-05-21 21:27:43,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3710 states, 3709 states have (on average 3.3475330277702886) internal successors, (12416), 3709 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:43,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 12416 transitions. [2021-05-21 21:27:43,990 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 12416 transitions. Word has length 39 [2021-05-21 21:27:43,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:43,990 INFO L482 AbstractCegarLoop]: Abstraction has 3710 states and 12416 transitions. [2021-05-21 21:27:43,990 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:43,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 12416 transitions. [2021-05-21 21:27:43,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:43,994 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:43,994 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:43,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-05-21 21:27:43,994 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:43,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:43,994 INFO L82 PathProgramCache]: Analyzing trace with hash -862500170, now seen corresponding path program 164 times [2021-05-21 21:27:43,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:43,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452097795] [2021-05-21 21:27:43,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:44,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:44,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452097795] [2021-05-21 21:27:44,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452097795] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:44,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:44,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:44,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126630253] [2021-05-21 21:27:44,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:44,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:44,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:44,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:44,138 INFO L87 Difference]: Start difference. First operand 3710 states and 12416 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:45,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:45,360 INFO L93 Difference]: Finished difference Result 4341 states and 14308 transitions. [2021-05-21 21:27:45,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-21 21:27:45,360 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:45,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:45,367 INFO L225 Difference]: With dead ends: 4341 [2021-05-21 21:27:45,367 INFO L226 Difference]: Without dead ends: 4277 [2021-05-21 21:27:45,367 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 803.4ms TimeCoverageRelationStatistics Valid=293, Invalid=2677, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:27:45,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2021-05-21 21:27:45,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 3760. [2021-05-21 21:27:45,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 3759 states have (on average 3.346368715083799) internal successors, (12579), 3759 states have internal predecessors, (12579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 12579 transitions. [2021-05-21 21:27:45,422 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 12579 transitions. Word has length 39 [2021-05-21 21:27:45,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:45,422 INFO L482 AbstractCegarLoop]: Abstraction has 3760 states and 12579 transitions. [2021-05-21 21:27:45,422 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:45,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 12579 transitions. [2021-05-21 21:27:45,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:45,426 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:45,426 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:45,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-05-21 21:27:45,426 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:45,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:45,426 INFO L82 PathProgramCache]: Analyzing trace with hash 676375352, now seen corresponding path program 165 times [2021-05-21 21:27:45,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:45,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242452278] [2021-05-21 21:27:45,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:45,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:45,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:45,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242452278] [2021-05-21 21:27:45,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242452278] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:45,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:45,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:45,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441473075] [2021-05-21 21:27:45,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:45,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:45,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:45,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:45,570 INFO L87 Difference]: Start difference. First operand 3760 states and 12579 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:46,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:46,460 INFO L93 Difference]: Finished difference Result 4215 states and 14023 transitions. [2021-05-21 21:27:46,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 21:27:46,460 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:46,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:46,467 INFO L225 Difference]: With dead ends: 4215 [2021-05-21 21:27:46,467 INFO L226 Difference]: Without dead ends: 4148 [2021-05-21 21:27:46,468 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 502.9ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-05-21 21:27:46,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2021-05-21 21:27:46,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3800. [2021-05-21 21:27:46,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3800 states, 3799 states have (on average 3.339563042906028) internal successors, (12687), 3799 states have internal predecessors, (12687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:46,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 12687 transitions. [2021-05-21 21:27:46,525 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 12687 transitions. Word has length 39 [2021-05-21 21:27:46,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:46,525 INFO L482 AbstractCegarLoop]: Abstraction has 3800 states and 12687 transitions. [2021-05-21 21:27:46,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:46,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 12687 transitions. [2021-05-21 21:27:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:46,530 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:46,530 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:46,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-05-21 21:27:46,530 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:46,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:46,530 INFO L82 PathProgramCache]: Analyzing trace with hash 545780504, now seen corresponding path program 166 times [2021-05-21 21:27:46,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:46,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057001607] [2021-05-21 21:27:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:46,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:46,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057001607] [2021-05-21 21:27:46,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057001607] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:46,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:46,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:46,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123993295] [2021-05-21 21:27:46,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:46,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:46,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:46,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:46,682 INFO L87 Difference]: Start difference. First operand 3800 states and 12687 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:47,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:47,616 INFO L93 Difference]: Finished difference Result 4203 states and 13983 transitions. [2021-05-21 21:27:47,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 21:27:47,616 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:47,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:47,623 INFO L225 Difference]: With dead ends: 4203 [2021-05-21 21:27:47,623 INFO L226 Difference]: Without dead ends: 4140 [2021-05-21 21:27:47,623 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 536.3ms TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2021-05-21 21:27:47,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2021-05-21 21:27:47,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3792. [2021-05-21 21:27:47,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3792 states, 3791 states have (on average 3.340279609601688) internal successors, (12663), 3791 states have internal predecessors, (12663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:47,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 12663 transitions. [2021-05-21 21:27:47,675 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 12663 transitions. Word has length 39 [2021-05-21 21:27:47,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:47,675 INFO L482 AbstractCegarLoop]: Abstraction has 3792 states and 12663 transitions. [2021-05-21 21:27:47,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:47,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 12663 transitions. [2021-05-21 21:27:47,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:47,679 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:47,679 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:47,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-05-21 21:27:47,680 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:47,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:47,680 INFO L82 PathProgramCache]: Analyzing trace with hash 15880056, now seen corresponding path program 167 times [2021-05-21 21:27:47,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:47,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108136709] [2021-05-21 21:27:47,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:47,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:47,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108136709] [2021-05-21 21:27:47,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108136709] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:47,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:47,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:47,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127460437] [2021-05-21 21:27:47,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:47,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:47,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:47,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:47,823 INFO L87 Difference]: Start difference. First operand 3792 states and 12663 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:48,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:48,772 INFO L93 Difference]: Finished difference Result 4227 states and 14043 transitions. [2021-05-21 21:27:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 21:27:48,772 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:48,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:48,779 INFO L225 Difference]: With dead ends: 4227 [2021-05-21 21:27:48,779 INFO L226 Difference]: Without dead ends: 4104 [2021-05-21 21:27:48,779 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 545.5ms TimeCoverageRelationStatistics Valid=195, Invalid=1785, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 21:27:48,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2021-05-21 21:27:48,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 3744. [2021-05-21 21:27:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 3743 states have (on average 3.347314987977558) internal successors, (12529), 3743 states have internal predecessors, (12529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 12529 transitions. [2021-05-21 21:27:48,836 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 12529 transitions. Word has length 39 [2021-05-21 21:27:48,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:48,836 INFO L482 AbstractCegarLoop]: Abstraction has 3744 states and 12529 transitions. [2021-05-21 21:27:48,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 12529 transitions. [2021-05-21 21:27:48,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:48,840 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:48,840 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:48,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-05-21 21:27:48,841 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:48,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:48,841 INFO L82 PathProgramCache]: Analyzing trace with hash -702531114, now seen corresponding path program 168 times [2021-05-21 21:27:48,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:48,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445983747] [2021-05-21 21:27:48,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:49,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:49,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445983747] [2021-05-21 21:27:49,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445983747] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:49,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:49,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:49,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276492373] [2021-05-21 21:27:49,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:49,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:49,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:49,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:49,007 INFO L87 Difference]: Start difference. First operand 3744 states and 12529 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:50,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:50,711 INFO L93 Difference]: Finished difference Result 6362 states and 21428 transitions. [2021-05-21 21:27:50,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-21 21:27:50,711 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:50,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:50,721 INFO L225 Difference]: With dead ends: 6362 [2021-05-21 21:27:50,722 INFO L226 Difference]: Without dead ends: 6319 [2021-05-21 21:27:50,722 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1021.4ms TimeCoverageRelationStatistics Valid=399, Invalid=4157, Unknown=0, NotChecked=0, Total=4556 [2021-05-21 21:27:50,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6319 states. [2021-05-21 21:27:50,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6319 to 3972. [2021-05-21 21:27:50,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3972 states, 3971 states have (on average 3.3598589775875096) internal successors, (13342), 3971 states have internal predecessors, (13342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:50,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 13342 transitions. [2021-05-21 21:27:50,798 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 13342 transitions. Word has length 39 [2021-05-21 21:27:50,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:50,799 INFO L482 AbstractCegarLoop]: Abstraction has 3972 states and 13342 transitions. [2021-05-21 21:27:50,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:50,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 13342 transitions. [2021-05-21 21:27:50,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:50,804 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:50,804 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:50,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-05-21 21:27:50,804 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:50,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:50,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1811837880, now seen corresponding path program 169 times [2021-05-21 21:27:50,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:50,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382902518] [2021-05-21 21:27:50,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:50,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:50,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382902518] [2021-05-21 21:27:50,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382902518] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:50,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:50,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:50,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535648697] [2021-05-21 21:27:50,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:50,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:50,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:50,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:50,953 INFO L87 Difference]: Start difference. First operand 3972 states and 13342 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:52,975 INFO L93 Difference]: Finished difference Result 7267 states and 24502 transitions. [2021-05-21 21:27:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-21 21:27:52,975 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:52,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:52,989 INFO L225 Difference]: With dead ends: 7267 [2021-05-21 21:27:52,989 INFO L226 Difference]: Without dead ends: 7215 [2021-05-21 21:27:52,990 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 1192.7ms TimeCoverageRelationStatistics Valid=448, Invalid=5102, Unknown=0, NotChecked=0, Total=5550 [2021-05-21 21:27:53,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7215 states. [2021-05-21 21:27:53,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7215 to 3942. [2021-05-21 21:27:53,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3941 states have (on average 3.3613296117736615) internal successors, (13247), 3941 states have internal predecessors, (13247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:53,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 13247 transitions. [2021-05-21 21:27:53,074 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 13247 transitions. Word has length 39 [2021-05-21 21:27:53,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:53,074 INFO L482 AbstractCegarLoop]: Abstraction has 3942 states and 13247 transitions. [2021-05-21 21:27:53,074 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:53,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 13247 transitions. [2021-05-21 21:27:53,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:53,079 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:53,079 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:53,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-05-21 21:27:53,079 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:53,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:53,079 INFO L82 PathProgramCache]: Analyzing trace with hash 215952456, now seen corresponding path program 170 times [2021-05-21 21:27:53,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:53,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375317620] [2021-05-21 21:27:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:53,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:53,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375317620] [2021-05-21 21:27:53,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375317620] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:53,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:53,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:53,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90631215] [2021-05-21 21:27:53,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:53,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:53,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:53,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:53,227 INFO L87 Difference]: Start difference. First operand 3942 states and 13247 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:54,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:54,476 INFO L93 Difference]: Finished difference Result 6269 states and 21030 transitions. [2021-05-21 21:27:54,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-21 21:27:54,477 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:54,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:54,487 INFO L225 Difference]: With dead ends: 6269 [2021-05-21 21:27:54,488 INFO L226 Difference]: Without dead ends: 6214 [2021-05-21 21:27:54,488 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 665.1ms TimeCoverageRelationStatistics Valid=262, Invalid=2390, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:27:54,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2021-05-21 21:27:54,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 4147. [2021-05-21 21:27:54,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 4146 states have (on average 3.3779546550892428) internal successors, (14005), 4146 states have internal predecessors, (14005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:54,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 14005 transitions. [2021-05-21 21:27:54,563 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 14005 transitions. Word has length 39 [2021-05-21 21:27:54,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:54,564 INFO L482 AbstractCegarLoop]: Abstraction has 4147 states and 14005 transitions. [2021-05-21 21:27:54,564 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:54,564 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 14005 transitions. [2021-05-21 21:27:54,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:54,569 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:54,569 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:54,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-05-21 21:27:54,569 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:54,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:54,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1388604678, now seen corresponding path program 171 times [2021-05-21 21:27:54,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:54,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951442857] [2021-05-21 21:27:54,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:54,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:54,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951442857] [2021-05-21 21:27:54,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951442857] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:54,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:54,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:54,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737497277] [2021-05-21 21:27:54,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:54,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:54,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:54,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:54,715 INFO L87 Difference]: Start difference. First operand 4147 states and 14005 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:56,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:56,264 INFO L93 Difference]: Finished difference Result 7174 states and 24108 transitions. [2021-05-21 21:27:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-21 21:27:56,264 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:56,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:56,276 INFO L225 Difference]: With dead ends: 7174 [2021-05-21 21:27:56,276 INFO L226 Difference]: Without dead ends: 7114 [2021-05-21 21:27:56,277 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 807.5ms TimeCoverageRelationStatistics Valid=300, Invalid=3006, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 21:27:56,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7114 states. [2021-05-21 21:27:56,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7114 to 4145. [2021-05-21 21:27:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 4144 states have (on average 3.3783783783783785) internal successors, (14000), 4144 states have internal predecessors, (14000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 14000 transitions. [2021-05-21 21:27:56,357 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 14000 transitions. Word has length 39 [2021-05-21 21:27:56,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:56,357 INFO L482 AbstractCegarLoop]: Abstraction has 4145 states and 14000 transitions. [2021-05-21 21:27:56,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:56,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 14000 transitions. [2021-05-21 21:27:56,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:56,362 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:56,362 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:56,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-05-21 21:27:56,362 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:56,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:56,363 INFO L82 PathProgramCache]: Analyzing trace with hash -488798924, now seen corresponding path program 172 times [2021-05-21 21:27:56,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:56,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755038357] [2021-05-21 21:27:56,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:56,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:56,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:56,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755038357] [2021-05-21 21:27:56,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755038357] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:56,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:56,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:56,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952122682] [2021-05-21 21:27:56,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:56,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:56,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:56,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:56,519 INFO L87 Difference]: Start difference. First operand 4145 states and 14000 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:57,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:57,757 INFO L93 Difference]: Finished difference Result 6238 states and 20984 transitions. [2021-05-21 21:27:57,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:27:57,757 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:57,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:57,767 INFO L225 Difference]: With dead ends: 6238 [2021-05-21 21:27:57,767 INFO L226 Difference]: Without dead ends: 6147 [2021-05-21 21:27:57,767 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 649.1ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:27:57,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6147 states. [2021-05-21 21:27:57,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6147 to 4145. [2021-05-21 21:27:57,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 4144 states have (on average 3.376930501930502) internal successors, (13994), 4144 states have internal predecessors, (13994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:57,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 13994 transitions. [2021-05-21 21:27:57,834 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 13994 transitions. Word has length 39 [2021-05-21 21:27:57,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:57,834 INFO L482 AbstractCegarLoop]: Abstraction has 4145 states and 13994 transitions. [2021-05-21 21:27:57,834 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:57,834 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 13994 transitions. [2021-05-21 21:27:57,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:57,839 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:57,839 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:57,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-05-21 21:27:57,839 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:57,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:57,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1991281130, now seen corresponding path program 173 times [2021-05-21 21:27:57,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:57,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549354830] [2021-05-21 21:27:57,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:57,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:57,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549354830] [2021-05-21 21:27:57,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549354830] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:57,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:57,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:27:57,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244373307] [2021-05-21 21:27:57,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:27:57,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:57,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:27:57,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:27:57,995 INFO L87 Difference]: Start difference. First operand 4145 states and 13994 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:59,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:27:59,514 INFO L93 Difference]: Finished difference Result 7326 states and 24599 transitions. [2021-05-21 21:27:59,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-21 21:27:59,515 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:27:59,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:27:59,527 INFO L225 Difference]: With dead ends: 7326 [2021-05-21 21:27:59,527 INFO L226 Difference]: Without dead ends: 7147 [2021-05-21 21:27:59,528 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 781.7ms TimeCoverageRelationStatistics Valid=290, Invalid=3016, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 21:27:59,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7147 states. [2021-05-21 21:27:59,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7147 to 4326. [2021-05-21 21:27:59,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4325 states have (on average 3.3784971098265895) internal successors, (14612), 4325 states have internal predecessors, (14612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 14612 transitions. [2021-05-21 21:27:59,613 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 14612 transitions. Word has length 39 [2021-05-21 21:27:59,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:27:59,613 INFO L482 AbstractCegarLoop]: Abstraction has 4326 states and 14612 transitions. [2021-05-21 21:27:59,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:27:59,613 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 14612 transitions. [2021-05-21 21:27:59,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:27:59,619 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:27:59,619 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:27:59,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-05-21 21:27:59,619 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:27:59,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:27:59,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1457358134, now seen corresponding path program 174 times [2021-05-21 21:27:59,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:27:59,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376136849] [2021-05-21 21:27:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:27:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:27:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:27:59,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:27:59,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376136849] [2021-05-21 21:27:59,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376136849] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:27:59,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:27:59,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 21:27:59,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866215470] [2021-05-21 21:27:59,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 21:27:59,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:27:59,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 21:27:59,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-05-21 21:27:59,801 INFO L87 Difference]: Start difference. First operand 4326 states and 14612 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:00,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:00,706 INFO L93 Difference]: Finished difference Result 4703 states and 15805 transitions. [2021-05-21 21:28:00,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:28:00,706 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:00,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:00,713 INFO L225 Difference]: With dead ends: 4703 [2021-05-21 21:28:00,714 INFO L226 Difference]: Without dead ends: 4636 [2021-05-21 21:28:00,714 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 555.8ms TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 21:28:00,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4636 states. [2021-05-21 21:28:00,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4636 to 4338. [2021-05-21 21:28:00,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4337 states have (on average 3.3751441088309893) internal successors, (14638), 4337 states have internal predecessors, (14638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 14638 transitions. [2021-05-21 21:28:00,778 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 14638 transitions. Word has length 39 [2021-05-21 21:28:00,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:00,778 INFO L482 AbstractCegarLoop]: Abstraction has 4338 states and 14638 transitions. [2021-05-21 21:28:00,778 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:00,778 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 14638 transitions. [2021-05-21 21:28:00,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:00,783 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:00,783 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:00,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-05-21 21:28:00,783 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:00,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:00,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1117993192, now seen corresponding path program 175 times [2021-05-21 21:28:00,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:00,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093566482] [2021-05-21 21:28:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:00,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:00,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093566482] [2021-05-21 21:28:00,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093566482] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:00,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:00,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 21:28:00,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344790259] [2021-05-21 21:28:00,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 21:28:00,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:00,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 21:28:00,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-05-21 21:28:00,916 INFO L87 Difference]: Start difference. First operand 4338 states and 14638 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:02,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:02,183 INFO L93 Difference]: Finished difference Result 4752 states and 15968 transitions. [2021-05-21 21:28:02,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:28:02,184 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:02,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:02,191 INFO L225 Difference]: With dead ends: 4752 [2021-05-21 21:28:02,192 INFO L226 Difference]: Without dead ends: 4691 [2021-05-21 21:28:02,192 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 807.6ms TimeCoverageRelationStatistics Valid=291, Invalid=2789, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:28:02,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2021-05-21 21:28:02,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 4326. [2021-05-21 21:28:02,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4325 states have (on average 3.3757225433526012) internal successors, (14600), 4325 states have internal predecessors, (14600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:02,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 14600 transitions. [2021-05-21 21:28:02,258 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 14600 transitions. Word has length 39 [2021-05-21 21:28:02,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:02,258 INFO L482 AbstractCegarLoop]: Abstraction has 4326 states and 14600 transitions. [2021-05-21 21:28:02,258 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:02,258 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 14600 transitions. [2021-05-21 21:28:02,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:02,263 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:02,263 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:02,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-05-21 21:28:02,263 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:02,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:02,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1071420726, now seen corresponding path program 176 times [2021-05-21 21:28:02,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:02,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902748878] [2021-05-21 21:28:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:02,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:02,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:02,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902748878] [2021-05-21 21:28:02,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902748878] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:02,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:02,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 21:28:02,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374269857] [2021-05-21 21:28:02,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 21:28:02,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:02,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 21:28:02,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-05-21 21:28:02,394 INFO L87 Difference]: Start difference. First operand 4326 states and 14600 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:03,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:03,591 INFO L93 Difference]: Finished difference Result 4727 states and 15862 transitions. [2021-05-21 21:28:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:28:03,591 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:03,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:03,599 INFO L225 Difference]: With dead ends: 4727 [2021-05-21 21:28:03,599 INFO L226 Difference]: Without dead ends: 4597 [2021-05-21 21:28:03,600 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 729.0ms TimeCoverageRelationStatistics Valid=255, Invalid=2397, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:28:03,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4597 states. [2021-05-21 21:28:03,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4597 to 4302. [2021-05-21 21:28:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 4301 states have (on average 3.377819111834457) internal successors, (14528), 4301 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:03,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 14528 transitions. [2021-05-21 21:28:03,673 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 14528 transitions. Word has length 39 [2021-05-21 21:28:03,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:03,673 INFO L482 AbstractCegarLoop]: Abstraction has 4302 states and 14528 transitions. [2021-05-21 21:28:03,673 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:03,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 14528 transitions. [2021-05-21 21:28:03,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:03,679 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:03,679 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:03,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-05-21 21:28:03,679 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:03,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:03,679 INFO L82 PathProgramCache]: Analyzing trace with hash 766531126, now seen corresponding path program 177 times [2021-05-21 21:28:03,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:03,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440118496] [2021-05-21 21:28:03,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:03,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:03,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:03,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440118496] [2021-05-21 21:28:03,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440118496] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:03,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:03,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:03,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348663159] [2021-05-21 21:28:03,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:03,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:03,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:03,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:03,895 INFO L87 Difference]: Start difference. First operand 4302 states and 14528 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:04,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:04,967 INFO L93 Difference]: Finished difference Result 4711 states and 15809 transitions. [2021-05-21 21:28:04,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:28:04,968 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:04,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:04,975 INFO L225 Difference]: With dead ends: 4711 [2021-05-21 21:28:04,976 INFO L226 Difference]: Without dead ends: 4644 [2021-05-21 21:28:04,976 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 735.4ms TimeCoverageRelationStatistics Valid=251, Invalid=2299, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:28:04,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4644 states. [2021-05-21 21:28:05,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4644 to 4302. [2021-05-21 21:28:05,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 4301 states have (on average 3.375029063008603) internal successors, (14516), 4301 states have internal predecessors, (14516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:05,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 14516 transitions. [2021-05-21 21:28:05,039 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 14516 transitions. Word has length 39 [2021-05-21 21:28:05,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:05,039 INFO L482 AbstractCegarLoop]: Abstraction has 4302 states and 14516 transitions. [2021-05-21 21:28:05,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:05,039 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 14516 transitions. [2021-05-21 21:28:05,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:05,044 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:05,044 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:05,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-05-21 21:28:05,044 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:05,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:05,044 INFO L82 PathProgramCache]: Analyzing trace with hash -953084844, now seen corresponding path program 178 times [2021-05-21 21:28:05,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:05,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280906637] [2021-05-21 21:28:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:05,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:05,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:05,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280906637] [2021-05-21 21:28:05,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280906637] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:05,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:05,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:05,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706475937] [2021-05-21 21:28:05,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:05,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:05,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:05,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:05,188 INFO L87 Difference]: Start difference. First operand 4302 states and 14516 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:06,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:06,629 INFO L93 Difference]: Finished difference Result 4799 states and 16051 transitions. [2021-05-21 21:28:06,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-21 21:28:06,629 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:06,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:06,637 INFO L225 Difference]: With dead ends: 4799 [2021-05-21 21:28:06,637 INFO L226 Difference]: Without dead ends: 4738 [2021-05-21 21:28:06,637 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 940.8ms TimeCoverageRelationStatistics Valid=345, Invalid=3437, Unknown=0, NotChecked=0, Total=3782 [2021-05-21 21:28:06,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4738 states. [2021-05-21 21:28:06,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4738 to 4290. [2021-05-21 21:28:06,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4289 states have (on average 3.377477267428305) internal successors, (14486), 4289 states have internal predecessors, (14486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 14486 transitions. [2021-05-21 21:28:06,700 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 14486 transitions. Word has length 39 [2021-05-21 21:28:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:06,701 INFO L482 AbstractCegarLoop]: Abstraction has 4290 states and 14486 transitions. [2021-05-21 21:28:06,701 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:06,701 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 14486 transitions. [2021-05-21 21:28:06,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:06,705 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:06,706 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:06,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-05-21 21:28:06,706 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:06,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:06,706 INFO L82 PathProgramCache]: Analyzing trace with hash -2113248746, now seen corresponding path program 179 times [2021-05-21 21:28:06,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:06,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663436356] [2021-05-21 21:28:06,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:06,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:06,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663436356] [2021-05-21 21:28:06,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663436356] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:06,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:06,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:06,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57997094] [2021-05-21 21:28:06,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:06,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:06,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:06,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:06,858 INFO L87 Difference]: Start difference. First operand 4290 states and 14486 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:07,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:07,755 INFO L93 Difference]: Finished difference Result 4597 states and 15444 transitions. [2021-05-21 21:28:07,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 21:28:07,755 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:07,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:07,763 INFO L225 Difference]: With dead ends: 4597 [2021-05-21 21:28:07,763 INFO L226 Difference]: Without dead ends: 4530 [2021-05-21 21:28:07,763 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 563.4ms TimeCoverageRelationStatistics Valid=205, Invalid=1775, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 21:28:07,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4530 states. [2021-05-21 21:28:07,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4530 to 4298. [2021-05-21 21:28:07,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4297 states have (on average 3.3749127298114963) internal successors, (14502), 4297 states have internal predecessors, (14502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:07,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 14502 transitions. [2021-05-21 21:28:07,826 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 14502 transitions. Word has length 39 [2021-05-21 21:28:07,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:07,826 INFO L482 AbstractCegarLoop]: Abstraction has 4298 states and 14502 transitions. [2021-05-21 21:28:07,826 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:07,827 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 14502 transitions. [2021-05-21 21:28:07,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:07,832 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:07,832 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:07,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-05-21 21:28:07,832 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:07,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:07,832 INFO L82 PathProgramCache]: Analyzing trace with hash 2051123702, now seen corresponding path program 180 times [2021-05-21 21:28:07,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:07,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045109926] [2021-05-21 21:28:07,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:08,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:08,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045109926] [2021-05-21 21:28:08,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045109926] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:08,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:08,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:08,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524422280] [2021-05-21 21:28:08,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:08,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:08,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:08,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:08,008 INFO L87 Difference]: Start difference. First operand 4298 states and 14502 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:08,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:08,908 INFO L93 Difference]: Finished difference Result 4585 states and 15404 transitions. [2021-05-21 21:28:08,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:28:08,908 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:08,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:08,915 INFO L225 Difference]: With dead ends: 4585 [2021-05-21 21:28:08,916 INFO L226 Difference]: Without dead ends: 4522 [2021-05-21 21:28:08,916 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 597.1ms TimeCoverageRelationStatistics Valid=211, Invalid=1859, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:28:08,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4522 states. [2021-05-21 21:28:08,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4522 to 4290. [2021-05-21 21:28:08,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4289 states have (on average 3.376544649102355) internal successors, (14482), 4289 states have internal predecessors, (14482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:08,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 14482 transitions. [2021-05-21 21:28:08,981 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 14482 transitions. Word has length 39 [2021-05-21 21:28:08,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:08,981 INFO L482 AbstractCegarLoop]: Abstraction has 4290 states and 14482 transitions. [2021-05-21 21:28:08,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:08,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 14482 transitions. [2021-05-21 21:28:08,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:08,986 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:08,986 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:08,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-05-21 21:28:08,986 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:08,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:08,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1915445110, now seen corresponding path program 181 times [2021-05-21 21:28:08,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:08,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712318412] [2021-05-21 21:28:08,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:09,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:09,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:09,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712318412] [2021-05-21 21:28:09,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712318412] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:09,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:09,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:09,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611199790] [2021-05-21 21:28:09,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:09,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:09,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:09,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:09,141 INFO L87 Difference]: Start difference. First operand 4290 states and 14482 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:10,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:10,368 INFO L93 Difference]: Finished difference Result 4691 states and 15658 transitions. [2021-05-21 21:28:10,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:28:10,368 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:10,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:10,376 INFO L225 Difference]: With dead ends: 4691 [2021-05-21 21:28:10,376 INFO L226 Difference]: Without dead ends: 4642 [2021-05-21 21:28:10,376 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 834.8ms TimeCoverageRelationStatistics Valid=302, Invalid=2778, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:28:10,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4642 states. [2021-05-21 21:28:10,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4642 to 4284. [2021-05-21 21:28:10,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 4283 states have (on average 3.3777725893065607) internal successors, (14467), 4283 states have internal predecessors, (14467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:10,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 14467 transitions. [2021-05-21 21:28:10,443 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 14467 transitions. Word has length 39 [2021-05-21 21:28:10,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:10,443 INFO L482 AbstractCegarLoop]: Abstraction has 4284 states and 14467 transitions. [2021-05-21 21:28:10,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:10,443 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 14467 transitions. [2021-05-21 21:28:10,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:10,449 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:10,449 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:10,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-05-21 21:28:10,449 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:10,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:10,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1461038616, now seen corresponding path program 182 times [2021-05-21 21:28:10,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:10,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995494053] [2021-05-21 21:28:10,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:10,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:10,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:10,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995494053] [2021-05-21 21:28:10,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995494053] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:10,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:10,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:10,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515843538] [2021-05-21 21:28:10,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:10,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:10,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:10,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:10,593 INFO L87 Difference]: Start difference. First operand 4284 states and 14467 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:11,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:11,526 INFO L93 Difference]: Finished difference Result 4619 states and 15474 transitions. [2021-05-21 21:28:11,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:28:11,527 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:11,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:11,534 INFO L225 Difference]: With dead ends: 4619 [2021-05-21 21:28:11,534 INFO L226 Difference]: Without dead ends: 4564 [2021-05-21 21:28:11,534 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 591.8ms TimeCoverageRelationStatistics Valid=225, Invalid=1937, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:28:11,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2021-05-21 21:28:11,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 4284. [2021-05-21 21:28:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 4283 states have (on average 3.377305626897035) internal successors, (14465), 4283 states have internal predecessors, (14465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:11,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 14465 transitions. [2021-05-21 21:28:11,594 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 14465 transitions. Word has length 39 [2021-05-21 21:28:11,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:11,595 INFO L482 AbstractCegarLoop]: Abstraction has 4284 states and 14465 transitions. [2021-05-21 21:28:11,595 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:11,595 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 14465 transitions. [2021-05-21 21:28:11,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:11,599 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:11,599 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:11,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-05-21 21:28:11,600 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:11,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:11,600 INFO L82 PathProgramCache]: Analyzing trace with hash -288386394, now seen corresponding path program 183 times [2021-05-21 21:28:11,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:11,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214577818] [2021-05-21 21:28:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:11,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:11,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214577818] [2021-05-21 21:28:11,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214577818] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:11,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:11,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:11,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124967418] [2021-05-21 21:28:11,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:11,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:11,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:11,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:11,740 INFO L87 Difference]: Start difference. First operand 4284 states and 14465 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:12,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:12,616 INFO L93 Difference]: Finished difference Result 4562 states and 15342 transitions. [2021-05-21 21:28:12,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:28:12,617 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:12,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:12,625 INFO L225 Difference]: With dead ends: 4562 [2021-05-21 21:28:12,625 INFO L226 Difference]: Without dead ends: 4506 [2021-05-21 21:28:12,625 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 553.1ms TimeCoverageRelationStatistics Valid=211, Invalid=1769, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 21:28:12,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2021-05-21 21:28:12,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 4274. [2021-05-21 21:28:12,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4274 states, 4273 states have (on average 3.3802948747952257) internal successors, (14444), 4273 states have internal predecessors, (14444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:12,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 14444 transitions. [2021-05-21 21:28:12,696 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 14444 transitions. Word has length 39 [2021-05-21 21:28:12,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:12,696 INFO L482 AbstractCegarLoop]: Abstraction has 4274 states and 14444 transitions. [2021-05-21 21:28:12,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:12,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 14444 transitions. [2021-05-21 21:28:12,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:12,702 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:12,702 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:12,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-05-21 21:28:12,702 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:12,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:12,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1953661928, now seen corresponding path program 184 times [2021-05-21 21:28:12,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:12,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601596215] [2021-05-21 21:28:12,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:12,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:12,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601596215] [2021-05-21 21:28:12,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601596215] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:12,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:12,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:12,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262242549] [2021-05-21 21:28:12,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:12,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:12,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:12,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:12,850 INFO L87 Difference]: Start difference. First operand 4274 states and 14444 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:14,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:14,260 INFO L93 Difference]: Finished difference Result 4832 states and 16094 transitions. [2021-05-21 21:28:14,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-21 21:28:14,260 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:14,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:14,268 INFO L225 Difference]: With dead ends: 4832 [2021-05-21 21:28:14,268 INFO L226 Difference]: Without dead ends: 4695 [2021-05-21 21:28:14,268 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 896.9ms TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 21:28:14,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4695 states. [2021-05-21 21:28:14,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4695 to 4278. [2021-05-21 21:28:14,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4277 states have (on average 3.37947159223755) internal successors, (14454), 4277 states have internal predecessors, (14454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 14454 transitions. [2021-05-21 21:28:14,326 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 14454 transitions. Word has length 39 [2021-05-21 21:28:14,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:14,326 INFO L482 AbstractCegarLoop]: Abstraction has 4278 states and 14454 transitions. [2021-05-21 21:28:14,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:14,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 14454 transitions. [2021-05-21 21:28:14,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:14,331 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:14,331 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:14,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-05-21 21:28:14,331 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:14,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:14,331 INFO L82 PathProgramCache]: Analyzing trace with hash 458771028, now seen corresponding path program 185 times [2021-05-21 21:28:14,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:14,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083565635] [2021-05-21 21:28:14,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:14,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:14,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083565635] [2021-05-21 21:28:14,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083565635] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:14,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:14,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:14,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297240880] [2021-05-21 21:28:14,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:14,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:14,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:14,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:14,474 INFO L87 Difference]: Start difference. First operand 4278 states and 14454 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:15,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:15,710 INFO L93 Difference]: Finished difference Result 4810 states and 15960 transitions. [2021-05-21 21:28:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:28:15,710 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:15,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:15,718 INFO L225 Difference]: With dead ends: 4810 [2021-05-21 21:28:15,718 INFO L226 Difference]: Without dead ends: 4746 [2021-05-21 21:28:15,718 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 808.5ms TimeCoverageRelationStatistics Valid=293, Invalid=2787, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:28:15,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4746 states. [2021-05-21 21:28:15,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4746 to 4278. [2021-05-21 21:28:15,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4277 states have (on average 3.37947159223755) internal successors, (14454), 4277 states have internal predecessors, (14454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:15,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 14454 transitions. [2021-05-21 21:28:15,781 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 14454 transitions. Word has length 39 [2021-05-21 21:28:15,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:15,781 INFO L482 AbstractCegarLoop]: Abstraction has 4278 states and 14454 transitions. [2021-05-21 21:28:15,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:15,781 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 14454 transitions. [2021-05-21 21:28:15,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:15,786 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:15,786 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:15,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-05-21 21:28:15,786 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:15,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:15,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1377254598, now seen corresponding path program 186 times [2021-05-21 21:28:15,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:15,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145886191] [2021-05-21 21:28:15,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:15,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:15,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145886191] [2021-05-21 21:28:15,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145886191] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:15,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:15,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:15,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134548816] [2021-05-21 21:28:15,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:15,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:15,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:15,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:15,933 INFO L87 Difference]: Start difference. First operand 4278 states and 14454 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:16,875 INFO L93 Difference]: Finished difference Result 4716 states and 15712 transitions. [2021-05-21 21:28:16,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 21:28:16,875 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:16,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:16,883 INFO L225 Difference]: With dead ends: 4716 [2021-05-21 21:28:16,883 INFO L226 Difference]: Without dead ends: 4661 [2021-05-21 21:28:16,883 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 578.5ms TimeCoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:28:16,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2021-05-21 21:28:16,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 4280. [2021-05-21 21:28:16,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 4279 states have (on average 3.378593129235803) internal successors, (14457), 4279 states have internal predecessors, (14457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 14457 transitions. [2021-05-21 21:28:16,947 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 14457 transitions. Word has length 39 [2021-05-21 21:28:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:16,947 INFO L482 AbstractCegarLoop]: Abstraction has 4280 states and 14457 transitions. [2021-05-21 21:28:16,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:16,948 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 14457 transitions. [2021-05-21 21:28:16,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:16,953 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:16,953 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:16,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-05-21 21:28:16,953 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:16,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:16,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1745060476, now seen corresponding path program 187 times [2021-05-21 21:28:16,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:16,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895949933] [2021-05-21 21:28:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:17,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:17,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895949933] [2021-05-21 21:28:17,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895949933] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:17,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:17,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:17,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86387503] [2021-05-21 21:28:17,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:17,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:17,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:17,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:17,098 INFO L87 Difference]: Start difference. First operand 4280 states and 14457 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:18,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:18,066 INFO L93 Difference]: Finished difference Result 4686 states and 15651 transitions. [2021-05-21 21:28:18,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:28:18,066 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:18,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:18,074 INFO L225 Difference]: With dead ends: 4686 [2021-05-21 21:28:18,074 INFO L226 Difference]: Without dead ends: 4626 [2021-05-21 21:28:18,074 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 597.8ms TimeCoverageRelationStatistics Valid=217, Invalid=1945, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:28:18,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4626 states. [2021-05-21 21:28:18,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4626 to 4278. [2021-05-21 21:28:18,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4277 states have (on average 3.3790039747486555) internal successors, (14452), 4277 states have internal predecessors, (14452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:18,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 14452 transitions. [2021-05-21 21:28:18,139 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 14452 transitions. Word has length 39 [2021-05-21 21:28:18,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:18,139 INFO L482 AbstractCegarLoop]: Abstraction has 4278 states and 14452 transitions. [2021-05-21 21:28:18,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:18,139 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 14452 transitions. [2021-05-21 21:28:18,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:18,145 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:18,145 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:18,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-05-21 21:28:18,145 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:18,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:18,145 INFO L82 PathProgramCache]: Analyzing trace with hash 470340278, now seen corresponding path program 188 times [2021-05-21 21:28:18,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:18,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023103793] [2021-05-21 21:28:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:18,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:18,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023103793] [2021-05-21 21:28:18,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023103793] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:18,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:18,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 21:28:18,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041702851] [2021-05-21 21:28:18,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 21:28:18,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:18,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 21:28:18,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-05-21 21:28:18,306 INFO L87 Difference]: Start difference. First operand 4278 states and 14452 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:19,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:19,133 INFO L93 Difference]: Finished difference Result 4597 states and 15438 transitions. [2021-05-21 21:28:19,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-21 21:28:19,133 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:19,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:19,141 INFO L225 Difference]: With dead ends: 4597 [2021-05-21 21:28:19,141 INFO L226 Difference]: Without dead ends: 4521 [2021-05-21 21:28:19,141 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 545.2ms TimeCoverageRelationStatistics Valid=190, Invalid=1616, Unknown=0, NotChecked=0, Total=1806 [2021-05-21 21:28:19,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2021-05-21 21:28:19,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4286. [2021-05-21 21:28:19,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4285 states have (on average 3.3764294049008168) internal successors, (14468), 4285 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:19,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 14468 transitions. [2021-05-21 21:28:19,210 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 14468 transitions. Word has length 39 [2021-05-21 21:28:19,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:19,210 INFO L482 AbstractCegarLoop]: Abstraction has 4286 states and 14468 transitions. [2021-05-21 21:28:19,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:19,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 14468 transitions. [2021-05-21 21:28:19,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:19,216 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:19,216 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:19,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-05-21 21:28:19,216 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:19,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:19,216 INFO L82 PathProgramCache]: Analyzing trace with hash -547713334, now seen corresponding path program 189 times [2021-05-21 21:28:19,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:19,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461288603] [2021-05-21 21:28:19,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:19,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:19,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461288603] [2021-05-21 21:28:19,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461288603] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:19,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:19,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:19,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801357730] [2021-05-21 21:28:19,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:19,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:19,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:19,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:19,362 INFO L87 Difference]: Start difference. First operand 4286 states and 14468 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:20,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:20,266 INFO L93 Difference]: Finished difference Result 4579 states and 15384 transitions. [2021-05-21 21:28:20,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:28:20,266 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:20,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:20,273 INFO L225 Difference]: With dead ends: 4579 [2021-05-21 21:28:20,273 INFO L226 Difference]: Without dead ends: 4501 [2021-05-21 21:28:20,274 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 570.9ms TimeCoverageRelationStatistics Valid=206, Invalid=1864, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:28:20,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4501 states. [2021-05-21 21:28:20,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4501 to 4266. [2021-05-21 21:28:20,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4266 states, 4265 states have (on average 3.381008206330598) internal successors, (14420), 4265 states have internal predecessors, (14420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:20,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4266 states to 4266 states and 14420 transitions. [2021-05-21 21:28:20,354 INFO L78 Accepts]: Start accepts. Automaton has 4266 states and 14420 transitions. Word has length 39 [2021-05-21 21:28:20,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:20,354 INFO L482 AbstractCegarLoop]: Abstraction has 4266 states and 14420 transitions. [2021-05-21 21:28:20,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:20,354 INFO L276 IsEmpty]: Start isEmpty. Operand 4266 states and 14420 transitions. [2021-05-21 21:28:20,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:20,359 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:20,359 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:20,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-05-21 21:28:20,360 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:20,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:20,360 INFO L82 PathProgramCache]: Analyzing trace with hash -358048246, now seen corresponding path program 190 times [2021-05-21 21:28:20,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:20,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192654582] [2021-05-21 21:28:20,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:20,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:20,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192654582] [2021-05-21 21:28:20,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192654582] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:20,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:20,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:20,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194688804] [2021-05-21 21:28:20,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:20,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:20,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:20,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:20,534 INFO L87 Difference]: Start difference. First operand 4266 states and 14420 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:21,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:21,841 INFO L93 Difference]: Finished difference Result 4817 states and 16072 transitions. [2021-05-21 21:28:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-21 21:28:21,842 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:21,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:21,850 INFO L225 Difference]: With dead ends: 4817 [2021-05-21 21:28:21,850 INFO L226 Difference]: Without dead ends: 4711 [2021-05-21 21:28:21,851 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 815.0ms TimeCoverageRelationStatistics Valid=272, Invalid=2698, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:28:21,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2021-05-21 21:28:21,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 4288. [2021-05-21 21:28:21,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 4287 states have (on average 3.3813855843247027) internal successors, (14496), 4287 states have internal predecessors, (14496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:21,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 14496 transitions. [2021-05-21 21:28:21,920 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 14496 transitions. Word has length 39 [2021-05-21 21:28:21,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:21,920 INFO L482 AbstractCegarLoop]: Abstraction has 4288 states and 14496 transitions. [2021-05-21 21:28:21,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:21,920 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 14496 transitions. [2021-05-21 21:28:21,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:21,926 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:21,926 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:21,926 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-05-21 21:28:21,926 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:21,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:21,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1852939146, now seen corresponding path program 191 times [2021-05-21 21:28:21,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:21,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548800562] [2021-05-21 21:28:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:22,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:22,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548800562] [2021-05-21 21:28:22,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548800562] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:22,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:22,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:22,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894222228] [2021-05-21 21:28:22,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:22,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:22,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:22,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:22,072 INFO L87 Difference]: Start difference. First operand 4288 states and 14496 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:23,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:23,282 INFO L93 Difference]: Finished difference Result 4854 states and 16096 transitions. [2021-05-21 21:28:23,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-21 21:28:23,282 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:23,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:23,290 INFO L225 Difference]: With dead ends: 4854 [2021-05-21 21:28:23,290 INFO L226 Difference]: Without dead ends: 4790 [2021-05-21 21:28:23,291 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 785.3ms TimeCoverageRelationStatistics Valid=287, Invalid=2793, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:28:23,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4790 states. [2021-05-21 21:28:23,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 4304. [2021-05-21 21:28:23,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4304 states, 4303 states have (on average 3.380897048570765) internal successors, (14548), 4303 states have internal predecessors, (14548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:23,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 14548 transitions. [2021-05-21 21:28:23,361 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 14548 transitions. Word has length 39 [2021-05-21 21:28:23,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:23,361 INFO L482 AbstractCegarLoop]: Abstraction has 4304 states and 14548 transitions. [2021-05-21 21:28:23,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:23,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 14548 transitions. [2021-05-21 21:28:23,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:23,367 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:23,367 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:23,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-05-21 21:28:23,367 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:23,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:23,368 INFO L82 PathProgramCache]: Analyzing trace with hash -934455576, now seen corresponding path program 192 times [2021-05-21 21:28:23,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:23,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698266485] [2021-05-21 21:28:23,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:23,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:23,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698266485] [2021-05-21 21:28:23,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698266485] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:23,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:23,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:23,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474109490] [2021-05-21 21:28:23,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:23,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:23,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:23,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:23,523 INFO L87 Difference]: Start difference. First operand 4304 states and 14548 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:24,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:24,426 INFO L93 Difference]: Finished difference Result 4752 states and 15828 transitions. [2021-05-21 21:28:24,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 21:28:24,426 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:24,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:24,435 INFO L225 Difference]: With dead ends: 4752 [2021-05-21 21:28:24,435 INFO L226 Difference]: Without dead ends: 4709 [2021-05-21 21:28:24,436 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 560.2ms TimeCoverageRelationStatistics Valid=203, Invalid=1867, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:28:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4709 states. [2021-05-21 21:28:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4709 to 4310. [2021-05-21 21:28:24,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 4309 states have (on average 3.379206312369459) internal successors, (14561), 4309 states have internal predecessors, (14561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:24,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 14561 transitions. [2021-05-21 21:28:24,517 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 14561 transitions. Word has length 39 [2021-05-21 21:28:24,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:24,517 INFO L482 AbstractCegarLoop]: Abstraction has 4310 states and 14561 transitions. [2021-05-21 21:28:24,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:24,517 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 14561 transitions. [2021-05-21 21:28:24,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:24,523 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:24,523 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:24,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-05-21 21:28:24,523 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:24,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:24,523 INFO L82 PathProgramCache]: Analyzing trace with hash -914306842, now seen corresponding path program 193 times [2021-05-21 21:28:24,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:24,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528802519] [2021-05-21 21:28:24,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:24,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:24,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528802519] [2021-05-21 21:28:24,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528802519] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:24,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:24,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:24,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075835770] [2021-05-21 21:28:24,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:24,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:24,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:24,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:24,668 INFO L87 Difference]: Start difference. First operand 4310 states and 14561 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:25,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:25,678 INFO L93 Difference]: Finished difference Result 4723 states and 15772 transitions. [2021-05-21 21:28:25,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 21:28:25,678 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:25,686 INFO L225 Difference]: With dead ends: 4723 [2021-05-21 21:28:25,686 INFO L226 Difference]: Without dead ends: 4680 [2021-05-21 21:28:25,686 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 653.8ms TimeCoverageRelationStatistics Valid=230, Invalid=2122, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 21:28:25,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2021-05-21 21:28:25,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 4306. [2021-05-21 21:28:25,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4306 states, 4305 states have (on average 3.3800232288037164) internal successors, (14551), 4305 states have internal predecessors, (14551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:25,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4306 states to 4306 states and 14551 transitions. [2021-05-21 21:28:25,750 INFO L78 Accepts]: Start accepts. Automaton has 4306 states and 14551 transitions. Word has length 39 [2021-05-21 21:28:25,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:25,750 INFO L482 AbstractCegarLoop]: Abstraction has 4306 states and 14551 transitions. [2021-05-21 21:28:25,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:25,751 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states and 14551 transitions. [2021-05-21 21:28:25,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:25,756 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:25,756 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:25,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-05-21 21:28:25,756 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:25,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:25,756 INFO L82 PathProgramCache]: Analyzing trace with hash 238196646, now seen corresponding path program 194 times [2021-05-21 21:28:25,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:25,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287712029] [2021-05-21 21:28:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:25,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:25,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287712029] [2021-05-21 21:28:25,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287712029] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:25,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:25,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:25,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440797486] [2021-05-21 21:28:25,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:25,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:25,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:25,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:25,900 INFO L87 Difference]: Start difference. First operand 4306 states and 14551 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:26,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:26,836 INFO L93 Difference]: Finished difference Result 4730 states and 15787 transitions. [2021-05-21 21:28:26,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-21 21:28:26,836 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:26,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:26,844 INFO L225 Difference]: With dead ends: 4730 [2021-05-21 21:28:26,844 INFO L226 Difference]: Without dead ends: 4670 [2021-05-21 21:28:26,845 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 602.6ms TimeCoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:28:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2021-05-21 21:28:26,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 4304. [2021-05-21 21:28:26,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4304 states, 4303 states have (on average 3.380432256565187) internal successors, (14546), 4303 states have internal predecessors, (14546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:26,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 14546 transitions. [2021-05-21 21:28:26,913 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 14546 transitions. Word has length 39 [2021-05-21 21:28:26,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:26,913 INFO L482 AbstractCegarLoop]: Abstraction has 4304 states and 14546 transitions. [2021-05-21 21:28:26,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:26,913 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 14546 transitions. [2021-05-21 21:28:26,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:26,919 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:26,919 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:26,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-05-21 21:28:26,919 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:26,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:26,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1841369896, now seen corresponding path program 195 times [2021-05-21 21:28:26,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:26,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951263030] [2021-05-21 21:28:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:27,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:27,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:27,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951263030] [2021-05-21 21:28:27,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951263030] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:27,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:27,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 21:28:27,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101298978] [2021-05-21 21:28:27,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 21:28:27,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:27,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 21:28:27,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-05-21 21:28:27,055 INFO L87 Difference]: Start difference. First operand 4304 states and 14546 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:27,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:27,850 INFO L93 Difference]: Finished difference Result 4698 states and 15727 transitions. [2021-05-21 21:28:27,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 21:28:27,850 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:27,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:27,858 INFO L225 Difference]: With dead ends: 4698 [2021-05-21 21:28:27,858 INFO L226 Difference]: Without dead ends: 4622 [2021-05-21 21:28:27,858 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 489.4ms TimeCoverageRelationStatistics Valid=177, Invalid=1545, Unknown=0, NotChecked=0, Total=1722 [2021-05-21 21:28:27,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2021-05-21 21:28:27,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 4312. [2021-05-21 21:28:27,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 4311 states have (on average 3.3778705636743216) internal successors, (14562), 4311 states have internal predecessors, (14562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:27,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 14562 transitions. [2021-05-21 21:28:27,919 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 14562 transitions. Word has length 39 [2021-05-21 21:28:27,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:27,920 INFO L482 AbstractCegarLoop]: Abstraction has 4312 states and 14562 transitions. [2021-05-21 21:28:27,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:27,920 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 14562 transitions. [2021-05-21 21:28:27,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:27,925 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:27,925 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:27,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-05-21 21:28:27,925 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:27,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:27,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1435543788, now seen corresponding path program 196 times [2021-05-21 21:28:27,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:27,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323391625] [2021-05-21 21:28:27,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:28,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:28,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323391625] [2021-05-21 21:28:28,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323391625] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:28,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:28,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:28,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906133112] [2021-05-21 21:28:28,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:28,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:28,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:28,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:28,076 INFO L87 Difference]: Start difference. First operand 4312 states and 14562 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:28,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:28,985 INFO L93 Difference]: Finished difference Result 4680 states and 15673 transitions. [2021-05-21 21:28:28,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 21:28:28,986 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:28,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:28,993 INFO L225 Difference]: With dead ends: 4680 [2021-05-21 21:28:28,993 INFO L226 Difference]: Without dead ends: 4610 [2021-05-21 21:28:28,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 576.0ms TimeCoverageRelationStatistics Valid=193, Invalid=1787, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 21:28:29,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2021-05-21 21:28:29,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4300. [2021-05-21 21:28:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4299 states have (on average 3.3807862293556643) internal successors, (14534), 4299 states have internal predecessors, (14534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14534 transitions. [2021-05-21 21:28:29,055 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14534 transitions. Word has length 39 [2021-05-21 21:28:29,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:29,055 INFO L482 AbstractCegarLoop]: Abstraction has 4300 states and 14534 transitions. [2021-05-21 21:28:29,055 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:29,055 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14534 transitions. [2021-05-21 21:28:29,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:29,061 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:29,061 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:29,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-05-21 21:28:29,061 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:29,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:29,061 INFO L82 PathProgramCache]: Analyzing trace with hash -2013239828, now seen corresponding path program 197 times [2021-05-21 21:28:29,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:29,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324726345] [2021-05-21 21:28:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:29,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:29,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:29,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324726345] [2021-05-21 21:28:29,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324726345] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:29,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:29,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:29,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291071939] [2021-05-21 21:28:29,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:29,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:29,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:29,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:29,204 INFO L87 Difference]: Start difference. First operand 4300 states and 14534 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:30,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:30,813 INFO L93 Difference]: Finished difference Result 6858 states and 23172 transitions. [2021-05-21 21:28:30,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-21 21:28:30,813 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:30,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:30,824 INFO L225 Difference]: With dead ends: 6858 [2021-05-21 21:28:30,824 INFO L226 Difference]: Without dead ends: 6815 [2021-05-21 21:28:30,825 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 977.1ms TimeCoverageRelationStatistics Valid=380, Invalid=3910, Unknown=0, NotChecked=0, Total=4290 [2021-05-21 21:28:30,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6815 states. [2021-05-21 21:28:30,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6815 to 4326. [2021-05-21 21:28:30,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4325 states have (on average 3.3796531791907514) internal successors, (14617), 4325 states have internal predecessors, (14617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:30,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 14617 transitions. [2021-05-21 21:28:30,898 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 14617 transitions. Word has length 39 [2021-05-21 21:28:30,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:30,898 INFO L482 AbstractCegarLoop]: Abstraction has 4326 states and 14617 transitions. [2021-05-21 21:28:30,898 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:30,898 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 14617 transitions. [2021-05-21 21:28:30,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:30,903 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:30,903 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:30,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-05-21 21:28:30,903 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:30,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:30,904 INFO L82 PathProgramCache]: Analyzing trace with hash 501129166, now seen corresponding path program 198 times [2021-05-21 21:28:30,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:30,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915020518] [2021-05-21 21:28:30,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:31,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:31,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915020518] [2021-05-21 21:28:31,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915020518] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:31,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:31,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:31,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759406993] [2021-05-21 21:28:31,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:31,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:31,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:31,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:31,047 INFO L87 Difference]: Start difference. First operand 4326 states and 14617 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:32,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:32,945 INFO L93 Difference]: Finished difference Result 7715 states and 26114 transitions. [2021-05-21 21:28:32,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-21 21:28:32,945 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:32,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:32,957 INFO L225 Difference]: With dead ends: 7715 [2021-05-21 21:28:32,957 INFO L226 Difference]: Without dead ends: 7663 [2021-05-21 21:28:32,957 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1544 ImplicationChecksByTransitivity, 1102.4ms TimeCoverageRelationStatistics Valid=429, Invalid=4827, Unknown=0, NotChecked=0, Total=5256 [2021-05-21 21:28:32,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7663 states. [2021-05-21 21:28:33,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7663 to 4300. [2021-05-21 21:28:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4299 states have (on average 3.3807862293556643) internal successors, (14534), 4299 states have internal predecessors, (14534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:33,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14534 transitions. [2021-05-21 21:28:33,031 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14534 transitions. Word has length 39 [2021-05-21 21:28:33,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:33,031 INFO L482 AbstractCegarLoop]: Abstraction has 4300 states and 14534 transitions. [2021-05-21 21:28:33,031 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:33,032 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14534 transitions. [2021-05-21 21:28:33,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:33,037 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:33,037 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:33,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-05-21 21:28:33,037 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:33,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:33,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1094756258, now seen corresponding path program 199 times [2021-05-21 21:28:33,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:33,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158682234] [2021-05-21 21:28:33,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:33,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:33,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158682234] [2021-05-21 21:28:33,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158682234] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:33,180 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:33,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:33,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948371014] [2021-05-21 21:28:33,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:33,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:33,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:33,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:33,181 INFO L87 Difference]: Start difference. First operand 4300 states and 14534 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:34,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:34,326 INFO L93 Difference]: Finished difference Result 6351 states and 21238 transitions. [2021-05-21 21:28:34,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:28:34,327 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:34,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:34,338 INFO L225 Difference]: With dead ends: 6351 [2021-05-21 21:28:34,338 INFO L226 Difference]: Without dead ends: 6296 [2021-05-21 21:28:34,338 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 614.6ms TimeCoverageRelationStatistics Valid=232, Invalid=2120, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 21:28:34,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6296 states. [2021-05-21 21:28:34,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6296 to 4320. [2021-05-21 21:28:34,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4320 states, 4319 states have (on average 3.3804121324380643) internal successors, (14600), 4319 states have internal predecessors, (14600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:34,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4320 states to 4320 states and 14600 transitions. [2021-05-21 21:28:34,418 INFO L78 Accepts]: Start accepts. Automaton has 4320 states and 14600 transitions. Word has length 39 [2021-05-21 21:28:34,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:34,418 INFO L482 AbstractCegarLoop]: Abstraction has 4320 states and 14600 transitions. [2021-05-21 21:28:34,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:34,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4320 states and 14600 transitions. [2021-05-21 21:28:34,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:34,424 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:34,424 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:34,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-05-21 21:28:34,424 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:34,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:34,424 INFO L82 PathProgramCache]: Analyzing trace with hash 77895964, now seen corresponding path program 200 times [2021-05-21 21:28:34,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:34,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074857579] [2021-05-21 21:28:34,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:34,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:34,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074857579] [2021-05-21 21:28:34,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074857579] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:34,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:34,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:34,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946018106] [2021-05-21 21:28:34,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:34,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:34,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:34,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:34,571 INFO L87 Difference]: Start difference. First operand 4320 states and 14600 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:36,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:36,062 INFO L93 Difference]: Finished difference Result 7052 states and 23686 transitions. [2021-05-21 21:28:36,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-21 21:28:36,063 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:36,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:36,076 INFO L225 Difference]: With dead ends: 7052 [2021-05-21 21:28:36,076 INFO L226 Difference]: Without dead ends: 6992 [2021-05-21 21:28:36,077 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 831.7ms TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 21:28:36,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6992 states. [2021-05-21 21:28:36,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6992 to 4318. [2021-05-21 21:28:36,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4318 states, 4317 states have (on average 3.3808200138985405) internal successors, (14595), 4317 states have internal predecessors, (14595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:36,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 14595 transitions. [2021-05-21 21:28:36,166 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 14595 transitions. Word has length 39 [2021-05-21 21:28:36,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:36,166 INFO L482 AbstractCegarLoop]: Abstraction has 4318 states and 14595 transitions. [2021-05-21 21:28:36,166 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:36,166 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 14595 transitions. [2021-05-21 21:28:36,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:36,172 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:36,172 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:36,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-05-21 21:28:36,172 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:36,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:36,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1799507638, now seen corresponding path program 201 times [2021-05-21 21:28:36,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:36,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004070608] [2021-05-21 21:28:36,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:36,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:36,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:36,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004070608] [2021-05-21 21:28:36,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004070608] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:36,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:36,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:36,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948341167] [2021-05-21 21:28:36,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:36,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:36,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:36,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:36,328 INFO L87 Difference]: Start difference. First operand 4318 states and 14595 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:37,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:37,438 INFO L93 Difference]: Finished difference Result 6272 states and 21064 transitions. [2021-05-21 21:28:37,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:28:37,438 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:37,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:37,449 INFO L225 Difference]: With dead ends: 6272 [2021-05-21 21:28:37,449 INFO L226 Difference]: Without dead ends: 6181 [2021-05-21 21:28:37,449 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 607.5ms TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:28:37,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2021-05-21 21:28:37,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 4318. [2021-05-21 21:28:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4318 states, 4317 states have (on average 3.3794301598332175) internal successors, (14589), 4317 states have internal predecessors, (14589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:37,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 14589 transitions. [2021-05-21 21:28:37,521 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 14589 transitions. Word has length 39 [2021-05-21 21:28:37,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:37,521 INFO L482 AbstractCegarLoop]: Abstraction has 4318 states and 14589 transitions. [2021-05-21 21:28:37,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:37,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 14589 transitions. [2021-05-21 21:28:37,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:37,526 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:37,527 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:37,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-05-21 21:28:37,527 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:37,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:37,527 INFO L82 PathProgramCache]: Analyzing trace with hash 992977452, now seen corresponding path program 202 times [2021-05-21 21:28:37,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:37,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321009692] [2021-05-21 21:28:37,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:37,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:37,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321009692] [2021-05-21 21:28:37,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321009692] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:37,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:37,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:37,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163962496] [2021-05-21 21:28:37,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:37,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:37,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:37,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:37,675 INFO L87 Difference]: Start difference. First operand 4318 states and 14589 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:39,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:39,213 INFO L93 Difference]: Finished difference Result 7142 states and 24051 transitions. [2021-05-21 21:28:39,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-21 21:28:39,214 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:39,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:39,225 INFO L225 Difference]: With dead ends: 7142 [2021-05-21 21:28:39,226 INFO L226 Difference]: Without dead ends: 7042 [2021-05-21 21:28:39,226 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 808.9ms TimeCoverageRelationStatistics Valid=303, Invalid=3119, Unknown=0, NotChecked=0, Total=3422 [2021-05-21 21:28:39,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7042 states. [2021-05-21 21:28:39,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7042 to 4300. [2021-05-21 21:28:39,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4299 states have (on average 3.3793905559432424) internal successors, (14528), 4299 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:39,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14528 transitions. [2021-05-21 21:28:39,299 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14528 transitions. Word has length 39 [2021-05-21 21:28:39,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:39,299 INFO L482 AbstractCegarLoop]: Abstraction has 4300 states and 14528 transitions. [2021-05-21 21:28:39,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:39,299 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14528 transitions. [2021-05-21 21:28:39,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:39,304 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:39,304 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:39,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-05-21 21:28:39,304 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:39,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:39,305 INFO L82 PathProgramCache]: Analyzing trace with hash 756352456, now seen corresponding path program 203 times [2021-05-21 21:28:39,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:39,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17246251] [2021-05-21 21:28:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:39,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:39,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17246251] [2021-05-21 21:28:39,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17246251] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:39,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:39,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-21 21:28:39,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740084425] [2021-05-21 21:28:39,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-21 21:28:39,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:39,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-21 21:28:39,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-05-21 21:28:39,437 INFO L87 Difference]: Start difference. First operand 4300 states and 14528 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:40,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:40,177 INFO L93 Difference]: Finished difference Result 4629 states and 15530 transitions. [2021-05-21 21:28:40,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-21 21:28:40,178 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:40,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:40,185 INFO L225 Difference]: With dead ends: 4629 [2021-05-21 21:28:40,185 INFO L226 Difference]: Without dead ends: 4553 [2021-05-21 21:28:40,185 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 451.3ms TimeCoverageRelationStatistics Valid=162, Invalid=1398, Unknown=0, NotChecked=0, Total=1560 [2021-05-21 21:28:40,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2021-05-21 21:28:40,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 4332. [2021-05-21 21:28:40,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4332 states, 4331 states have (on average 3.3747402447471715) internal successors, (14616), 4331 states have internal predecessors, (14616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:40,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 14616 transitions. [2021-05-21 21:28:40,247 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 14616 transitions. Word has length 39 [2021-05-21 21:28:40,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:40,247 INFO L482 AbstractCegarLoop]: Abstraction has 4332 states and 14616 transitions. [2021-05-21 21:28:40,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:40,247 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 14616 transitions. [2021-05-21 21:28:40,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:40,252 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:40,252 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:40,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-05-21 21:28:40,252 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:40,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:40,253 INFO L82 PathProgramCache]: Analyzing trace with hash -261701156, now seen corresponding path program 204 times [2021-05-21 21:28:40,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:40,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036065823] [2021-05-21 21:28:40,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:40,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:40,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:40,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036065823] [2021-05-21 21:28:40,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036065823] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:40,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:40,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:40,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946701572] [2021-05-21 21:28:40,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:40,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:40,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:40,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:40,397 INFO L87 Difference]: Start difference. First operand 4332 states and 14616 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:41,222 INFO L93 Difference]: Finished difference Result 4611 states and 15476 transitions. [2021-05-21 21:28:41,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 21:28:41,222 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:41,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:41,230 INFO L225 Difference]: With dead ends: 4611 [2021-05-21 21:28:41,230 INFO L226 Difference]: Without dead ends: 4545 [2021-05-21 21:28:41,230 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 520.3ms TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2021-05-21 21:28:41,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2021-05-21 21:28:41,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 4324. [2021-05-21 21:28:41,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4324 states, 4323 states have (on average 3.375433726578765) internal successors, (14592), 4323 states have internal predecessors, (14592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:41,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 14592 transitions. [2021-05-21 21:28:41,293 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 14592 transitions. Word has length 39 [2021-05-21 21:28:41,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:41,294 INFO L482 AbstractCegarLoop]: Abstraction has 4324 states and 14592 transitions. [2021-05-21 21:28:41,294 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:41,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 14592 transitions. [2021-05-21 21:28:41,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:41,299 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:41,299 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:41,299 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-05-21 21:28:41,299 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:41,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:41,300 INFO L82 PathProgramCache]: Analyzing trace with hash -543966810, now seen corresponding path program 205 times [2021-05-21 21:28:41,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:41,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153775912] [2021-05-21 21:28:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:41,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:41,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:41,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153775912] [2021-05-21 21:28:41,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153775912] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:41,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:41,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:28:41,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481259718] [2021-05-21 21:28:41,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:28:41,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:41,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:28:41,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:28:41,448 INFO L87 Difference]: Start difference. First operand 4324 states and 14592 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:42,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:42,257 INFO L93 Difference]: Finished difference Result 4632 states and 15529 transitions. [2021-05-21 21:28:42,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-21 21:28:42,257 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:42,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:42,264 INFO L225 Difference]: With dead ends: 4632 [2021-05-21 21:28:42,264 INFO L226 Difference]: Without dead ends: 4470 [2021-05-21 21:28:42,264 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 510.3ms TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2021-05-21 21:28:42,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2021-05-21 21:28:42,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 4256. [2021-05-21 21:28:42,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 3.38331374853114) internal successors, (14396), 4255 states have internal predecessors, (14396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 14396 transitions. [2021-05-21 21:28:42,325 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 14396 transitions. Word has length 39 [2021-05-21 21:28:42,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:42,325 INFO L482 AbstractCegarLoop]: Abstraction has 4256 states and 14396 transitions. [2021-05-21 21:28:42,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:42,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 14396 transitions. [2021-05-21 21:28:42,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:42,331 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:42,331 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:42,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-05-21 21:28:42,331 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:42,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:42,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1485490904, now seen corresponding path program 206 times [2021-05-21 21:28:42,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:42,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759393826] [2021-05-21 21:28:42,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:42,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:42,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759393826] [2021-05-21 21:28:42,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759393826] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:42,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:42,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:28:42,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997037205] [2021-05-21 21:28:42,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:28:42,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:42,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:28:42,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:28:42,496 INFO L87 Difference]: Start difference. First operand 4256 states and 14396 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:43,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:43,702 INFO L93 Difference]: Finished difference Result 4789 states and 16030 transitions. [2021-05-21 21:28:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-21 21:28:43,702 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:43,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:43,710 INFO L225 Difference]: With dead ends: 4789 [2021-05-21 21:28:43,710 INFO L226 Difference]: Without dead ends: 4722 [2021-05-21 21:28:43,710 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 723.0ms TimeCoverageRelationStatistics Valid=263, Invalid=2493, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 21:28:43,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4722 states. [2021-05-21 21:28:43,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4722 to 4264. [2021-05-21 21:28:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4263 states have (on average 3.3807178043631247) internal successors, (14412), 4263 states have internal predecessors, (14412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 14412 transitions. [2021-05-21 21:28:43,773 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 14412 transitions. Word has length 39 [2021-05-21 21:28:43,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:43,773 INFO L482 AbstractCegarLoop]: Abstraction has 4264 states and 14412 transitions. [2021-05-21 21:28:43,773 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:43,773 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 14412 transitions. [2021-05-21 21:28:43,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:43,778 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:43,778 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:43,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-05-21 21:28:43,778 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:43,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:43,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1354896056, now seen corresponding path program 207 times [2021-05-21 21:28:43,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:43,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122136568] [2021-05-21 21:28:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:43,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:43,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122136568] [2021-05-21 21:28:43,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122136568] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:43,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:43,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:28:43,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269240706] [2021-05-21 21:28:43,935 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:28:43,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:43,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:28:43,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:28:43,936 INFO L87 Difference]: Start difference. First operand 4264 states and 14412 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:45,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:45,045 INFO L93 Difference]: Finished difference Result 4721 states and 15834 transitions. [2021-05-21 21:28:45,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-21 21:28:45,046 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:45,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:45,054 INFO L225 Difference]: With dead ends: 4721 [2021-05-21 21:28:45,054 INFO L226 Difference]: Without dead ends: 4658 [2021-05-21 21:28:45,054 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 685.4ms TimeCoverageRelationStatistics Valid=264, Invalid=2388, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:28:45,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-05-21 21:28:45,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 4256. [2021-05-21 21:28:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 3.3823736780258518) internal successors, (14392), 4255 states have internal predecessors, (14392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:45,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 14392 transitions. [2021-05-21 21:28:45,138 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 14392 transitions. Word has length 39 [2021-05-21 21:28:45,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:45,138 INFO L482 AbstractCegarLoop]: Abstraction has 4256 states and 14392 transitions. [2021-05-21 21:28:45,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:45,138 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 14392 transitions. [2021-05-21 21:28:45,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:45,144 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:45,144 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:45,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-05-21 21:28:45,144 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:45,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:45,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1219217464, now seen corresponding path program 208 times [2021-05-21 21:28:45,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:45,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106586987] [2021-05-21 21:28:45,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:45,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:45,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106586987] [2021-05-21 21:28:45,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106586987] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:45,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:45,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:28:45,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113857100] [2021-05-21 21:28:45,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:28:45,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:45,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:28:45,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:28:45,308 INFO L87 Difference]: Start difference. First operand 4256 states and 14392 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:46,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:46,895 INFO L93 Difference]: Finished difference Result 4967 states and 16467 transitions. [2021-05-21 21:28:46,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-21 21:28:46,895 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:46,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:46,904 INFO L225 Difference]: With dead ends: 4967 [2021-05-21 21:28:46,904 INFO L226 Difference]: Without dead ends: 4924 [2021-05-21 21:28:46,905 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 1014.8ms TimeCoverageRelationStatistics Valid=386, Invalid=4036, Unknown=0, NotChecked=0, Total=4422 [2021-05-21 21:28:46,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4924 states. [2021-05-21 21:28:46,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4924 to 4264. [2021-05-21 21:28:46,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4263 states have (on average 3.3807178043631247) internal successors, (14412), 4263 states have internal predecessors, (14412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 14412 transitions. [2021-05-21 21:28:46,977 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 14412 transitions. Word has length 39 [2021-05-21 21:28:46,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:46,977 INFO L482 AbstractCegarLoop]: Abstraction has 4264 states and 14412 transitions. [2021-05-21 21:28:46,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:46,977 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 14412 transitions. [2021-05-21 21:28:46,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:46,982 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:46,982 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:46,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-05-21 21:28:46,983 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:46,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:46,983 INFO L82 PathProgramCache]: Analyzing trace with hash -561380838, now seen corresponding path program 209 times [2021-05-21 21:28:46,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:46,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694564255] [2021-05-21 21:28:46,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:47,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:47,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694564255] [2021-05-21 21:28:47,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694564255] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:47,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:47,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:28:47,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909213242] [2021-05-21 21:28:47,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:28:47,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:47,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:28:47,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:28:47,167 INFO L87 Difference]: Start difference. First operand 4264 states and 14412 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:48,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:48,727 INFO L93 Difference]: Finished difference Result 4923 states and 16349 transitions. [2021-05-21 21:28:48,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-21 21:28:48,727 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:48,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:48,735 INFO L225 Difference]: With dead ends: 4923 [2021-05-21 21:28:48,735 INFO L226 Difference]: Without dead ends: 4871 [2021-05-21 21:28:48,735 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 1021.6ms TimeCoverageRelationStatistics Valid=376, Invalid=3914, Unknown=0, NotChecked=0, Total=4290 [2021-05-21 21:28:48,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2021-05-21 21:28:48,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4256. [2021-05-21 21:28:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 3.3823736780258518) internal successors, (14392), 4255 states have internal predecessors, (14392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:48,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 14392 transitions. [2021-05-21 21:28:48,798 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 14392 transitions. Word has length 39 [2021-05-21 21:28:48,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:48,798 INFO L482 AbstractCegarLoop]: Abstraction has 4256 states and 14392 transitions. [2021-05-21 21:28:48,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:48,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 14392 transitions. [2021-05-21 21:28:48,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:48,803 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:48,803 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:48,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-05-21 21:28:48,803 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:48,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:48,803 INFO L82 PathProgramCache]: Analyzing trace with hash 2137701034, now seen corresponding path program 210 times [2021-05-21 21:28:48,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:48,804 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654039443] [2021-05-21 21:28:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:48,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:48,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:48,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654039443] [2021-05-21 21:28:48,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654039443] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:48,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:48,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:28:48,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396102010] [2021-05-21 21:28:48,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:28:48,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:48,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:28:48,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:28:48,970 INFO L87 Difference]: Start difference. First operand 4256 states and 14392 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:50,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:50,155 INFO L93 Difference]: Finished difference Result 4849 states and 16108 transitions. [2021-05-21 21:28:50,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-21 21:28:50,155 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:50,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:50,163 INFO L225 Difference]: With dead ends: 4849 [2021-05-21 21:28:50,163 INFO L226 Difference]: Without dead ends: 4794 [2021-05-21 21:28:50,164 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 751.1ms TimeCoverageRelationStatistics Valid=298, Invalid=2672, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:28:50,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4794 states. [2021-05-21 21:28:50,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4794 to 4258. [2021-05-21 21:28:50,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4258 states, 4257 states have (on average 3.38148931172187) internal successors, (14395), 4257 states have internal predecessors, (14395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4258 states to 4258 states and 14395 transitions. [2021-05-21 21:28:50,230 INFO L78 Accepts]: Start accepts. Automaton has 4258 states and 14395 transitions. Word has length 39 [2021-05-21 21:28:50,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:50,230 INFO L482 AbstractCegarLoop]: Abstraction has 4258 states and 14395 transitions. [2021-05-21 21:28:50,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:50,230 INFO L276 IsEmpty]: Start isEmpty. Operand 4258 states and 14395 transitions. [2021-05-21 21:28:50,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:50,235 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:50,235 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:50,235 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-05-21 21:28:50,235 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:50,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:50,236 INFO L82 PathProgramCache]: Analyzing trace with hash -984614040, now seen corresponding path program 211 times [2021-05-21 21:28:50,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:50,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795961115] [2021-05-21 21:28:50,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:50,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:50,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795961115] [2021-05-21 21:28:50,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795961115] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:50,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:50,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:28:50,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056293851] [2021-05-21 21:28:50,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:28:50,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:50,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:28:50,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:28:50,395 INFO L87 Difference]: Start difference. First operand 4258 states and 14395 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:51,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:51,507 INFO L93 Difference]: Finished difference Result 4784 states and 15956 transitions. [2021-05-21 21:28:51,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-21 21:28:51,507 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:51,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:51,514 INFO L225 Difference]: With dead ends: 4784 [2021-05-21 21:28:51,514 INFO L226 Difference]: Without dead ends: 4738 [2021-05-21 21:28:51,514 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 683.2ms TimeCoverageRelationStatistics Valid=269, Invalid=2383, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:28:51,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4738 states. [2021-05-21 21:28:51,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4738 to 4262. [2021-05-21 21:28:51,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4262 states, 4261 states have (on average 3.3801924430884767) internal successors, (14403), 4261 states have internal predecessors, (14403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:51,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4262 states to 4262 states and 14403 transitions. [2021-05-21 21:28:51,577 INFO L78 Accepts]: Start accepts. Automaton has 4262 states and 14403 transitions. Word has length 39 [2021-05-21 21:28:51,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:51,577 INFO L482 AbstractCegarLoop]: Abstraction has 4262 states and 14403 transitions. [2021-05-21 21:28:51,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:51,577 INFO L276 IsEmpty]: Start isEmpty. Operand 4262 states and 14403 transitions. [2021-05-21 21:28:51,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:51,583 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:51,583 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:51,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-05-21 21:28:51,583 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:51,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:51,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1232080202, now seen corresponding path program 212 times [2021-05-21 21:28:51,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:51,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884582002] [2021-05-21 21:28:51,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:51,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:51,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884582002] [2021-05-21 21:28:51,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884582002] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:51,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:51,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:28:51,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746818406] [2021-05-21 21:28:51,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:28:51,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:51,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:28:51,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:28:51,763 INFO L87 Difference]: Start difference. First operand 4262 states and 14403 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:52,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:52,981 INFO L93 Difference]: Finished difference Result 4744 states and 15867 transitions. [2021-05-21 21:28:52,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:28:52,981 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:52,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:52,989 INFO L225 Difference]: With dead ends: 4744 [2021-05-21 21:28:52,989 INFO L226 Difference]: Without dead ends: 4695 [2021-05-21 21:28:52,989 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 788.4ms TimeCoverageRelationStatistics Valid=282, Invalid=2474, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 21:28:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4695 states. [2021-05-21 21:28:53,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4695 to 4252. [2021-05-21 21:28:53,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4252 states, 4251 states have (on average 3.3832039520112915) internal successors, (14382), 4251 states have internal predecessors, (14382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4252 states to 4252 states and 14382 transitions. [2021-05-21 21:28:53,052 INFO L78 Accepts]: Start accepts. Automaton has 4252 states and 14382 transitions. Word has length 39 [2021-05-21 21:28:53,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:53,052 INFO L482 AbstractCegarLoop]: Abstraction has 4252 states and 14382 transitions. [2021-05-21 21:28:53,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:53,052 INFO L276 IsEmpty]: Start isEmpty. Operand 4252 states and 14382 transitions. [2021-05-21 21:28:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:53,057 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:53,057 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:53,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-05-21 21:28:53,057 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:53,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:53,057 INFO L82 PathProgramCache]: Analyzing trace with hash 306795320, now seen corresponding path program 213 times [2021-05-21 21:28:53,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:53,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362945046] [2021-05-21 21:28:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:53,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:53,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:53,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362945046] [2021-05-21 21:28:53,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362945046] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:53,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:53,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:28:53,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484240666] [2021-05-21 21:28:53,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:28:53,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:53,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:28:53,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:28:53,217 INFO L87 Difference]: Start difference. First operand 4252 states and 14382 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:54,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:54,359 INFO L93 Difference]: Finished difference Result 4761 states and 15970 transitions. [2021-05-21 21:28:54,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:28:54,360 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:54,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:54,368 INFO L225 Difference]: With dead ends: 4761 [2021-05-21 21:28:54,368 INFO L226 Difference]: Without dead ends: 4694 [2021-05-21 21:28:54,369 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 656.1ms TimeCoverageRelationStatistics Valid=226, Invalid=2224, Unknown=0, NotChecked=0, Total=2450 [2021-05-21 21:28:54,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2021-05-21 21:28:54,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4308. [2021-05-21 21:28:54,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 4307 states have (on average 3.3768284188530298) internal successors, (14544), 4307 states have internal predecessors, (14544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:54,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 14544 transitions. [2021-05-21 21:28:54,441 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 14544 transitions. Word has length 39 [2021-05-21 21:28:54,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:54,441 INFO L482 AbstractCegarLoop]: Abstraction has 4308 states and 14544 transitions. [2021-05-21 21:28:54,441 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:54,441 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 14544 transitions. [2021-05-21 21:28:54,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:54,447 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:54,447 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:54,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-05-21 21:28:54,447 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:54,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:54,447 INFO L82 PathProgramCache]: Analyzing trace with hash 176200472, now seen corresponding path program 214 times [2021-05-21 21:28:54,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:54,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022946871] [2021-05-21 21:28:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:54,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:54,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022946871] [2021-05-21 21:28:54,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022946871] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:54,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:54,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:28:54,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71279822] [2021-05-21 21:28:54,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:28:54,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:54,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:28:54,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:28:54,610 INFO L87 Difference]: Start difference. First operand 4308 states and 14544 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:55,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:55,725 INFO L93 Difference]: Finished difference Result 4757 states and 15954 transitions. [2021-05-21 21:28:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-21 21:28:55,725 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:55,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:55,732 INFO L225 Difference]: With dead ends: 4757 [2021-05-21 21:28:55,732 INFO L226 Difference]: Without dead ends: 4694 [2021-05-21 21:28:55,732 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 644.6ms TimeCoverageRelationStatistics Valid=230, Invalid=2122, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 21:28:55,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2021-05-21 21:28:55,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4340. [2021-05-21 21:28:55,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4340 states, 4339 states have (on average 3.3712837059230236) internal successors, (14628), 4339 states have internal predecessors, (14628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:55,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4340 states to 4340 states and 14628 transitions. [2021-05-21 21:28:55,792 INFO L78 Accepts]: Start accepts. Automaton has 4340 states and 14628 transitions. Word has length 39 [2021-05-21 21:28:55,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:55,793 INFO L482 AbstractCegarLoop]: Abstraction has 4340 states and 14628 transitions. [2021-05-21 21:28:55,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:55,793 INFO L276 IsEmpty]: Start isEmpty. Operand 4340 states and 14628 transitions. [2021-05-21 21:28:55,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:55,798 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:55,798 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:55,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-05-21 21:28:55,798 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:55,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:55,798 INFO L82 PathProgramCache]: Analyzing trace with hash -353699976, now seen corresponding path program 215 times [2021-05-21 21:28:55,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:55,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302857099] [2021-05-21 21:28:55,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:55,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:55,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302857099] [2021-05-21 21:28:55,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302857099] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:55,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:55,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:28:55,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817892268] [2021-05-21 21:28:55,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:28:55,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:55,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:28:55,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:28:55,957 INFO L87 Difference]: Start difference. First operand 4340 states and 14628 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:57,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:57,083 INFO L93 Difference]: Finished difference Result 4781 states and 16014 transitions. [2021-05-21 21:28:57,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-21 21:28:57,083 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:57,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:57,091 INFO L225 Difference]: With dead ends: 4781 [2021-05-21 21:28:57,091 INFO L226 Difference]: Without dead ends: 4658 [2021-05-21 21:28:57,092 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 652.2ms TimeCoverageRelationStatistics Valid=238, Invalid=2212, Unknown=0, NotChecked=0, Total=2450 [2021-05-21 21:28:57,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-05-21 21:28:57,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 4292. [2021-05-21 21:28:57,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4292 states, 4291 states have (on average 3.377767420181776) internal successors, (14494), 4291 states have internal predecessors, (14494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:57,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 14494 transitions. [2021-05-21 21:28:57,156 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 14494 transitions. Word has length 39 [2021-05-21 21:28:57,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:57,156 INFO L482 AbstractCegarLoop]: Abstraction has 4292 states and 14494 transitions. [2021-05-21 21:28:57,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:57,156 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 14494 transitions. [2021-05-21 21:28:57,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:57,161 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:57,161 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:57,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-05-21 21:28:57,162 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:57,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:57,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1072111146, now seen corresponding path program 216 times [2021-05-21 21:28:57,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:57,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645920882] [2021-05-21 21:28:57,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:57,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:57,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645920882] [2021-05-21 21:28:57,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645920882] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:57,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:57,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:28:57,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704779163] [2021-05-21 21:28:57,324 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:28:57,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:57,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:28:57,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:28:57,324 INFO L87 Difference]: Start difference. First operand 4292 states and 14494 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:59,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:28:59,458 INFO L93 Difference]: Finished difference Result 7281 states and 24446 transitions. [2021-05-21 21:28:59,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-21 21:28:59,459 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:28:59,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:28:59,472 INFO L225 Difference]: With dead ends: 7281 [2021-05-21 21:28:59,472 INFO L226 Difference]: Without dead ends: 7175 [2021-05-21 21:28:59,472 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 1235.9ms TimeCoverageRelationStatistics Valid=466, Invalid=5234, Unknown=0, NotChecked=0, Total=5700 [2021-05-21 21:28:59,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7175 states. [2021-05-21 21:28:59,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7175 to 4357. [2021-05-21 21:28:59,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4357 states, 4356 states have (on average 3.3732782369146004) internal successors, (14694), 4356 states have internal predecessors, (14694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:59,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4357 states to 4357 states and 14694 transitions. [2021-05-21 21:28:59,553 INFO L78 Accepts]: Start accepts. Automaton has 4357 states and 14694 transitions. Word has length 39 [2021-05-21 21:28:59,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:28:59,553 INFO L482 AbstractCegarLoop]: Abstraction has 4357 states and 14694 transitions. [2021-05-21 21:28:59,553 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:28:59,553 INFO L276 IsEmpty]: Start isEmpty. Operand 4357 states and 14694 transitions. [2021-05-21 21:28:59,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:28:59,558 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:28:59,558 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:28:59,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-05-21 21:28:59,559 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:28:59,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:28:59,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1442257848, now seen corresponding path program 217 times [2021-05-21 21:28:59,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:28:59,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686630980] [2021-05-21 21:28:59,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:28:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:28:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:28:59,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:28:59,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686630980] [2021-05-21 21:28:59,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686630980] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:28:59,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:28:59,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:28:59,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966469035] [2021-05-21 21:28:59,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:28:59,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:28:59,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:28:59,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:28:59,732 INFO L87 Difference]: Start difference. First operand 4357 states and 14694 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:02,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:02,038 INFO L93 Difference]: Finished difference Result 8067 states and 27212 transitions. [2021-05-21 21:29:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-21 21:29:02,038 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:02,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:02,052 INFO L225 Difference]: With dead ends: 8067 [2021-05-21 21:29:02,052 INFO L226 Difference]: Without dead ends: 8015 [2021-05-21 21:29:02,052 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 1332.3ms TimeCoverageRelationStatistics Valid=521, Invalid=6451, Unknown=0, NotChecked=0, Total=6972 [2021-05-21 21:29:02,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8015 states. [2021-05-21 21:29:02,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8015 to 4327. [2021-05-21 21:29:02,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4327 states, 4326 states have (on average 3.3747110494683312) internal successors, (14599), 4326 states have internal predecessors, (14599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:02,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4327 states to 4327 states and 14599 transitions. [2021-05-21 21:29:02,148 INFO L78 Accepts]: Start accepts. Automaton has 4327 states and 14599 transitions. Word has length 39 [2021-05-21 21:29:02,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:02,148 INFO L482 AbstractCegarLoop]: Abstraction has 4327 states and 14599 transitions. [2021-05-21 21:29:02,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:02,148 INFO L276 IsEmpty]: Start isEmpty. Operand 4327 states and 14599 transitions. [2021-05-21 21:29:02,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:02,153 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:02,153 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:02,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-05-21 21:29:02,153 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:02,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:02,153 INFO L82 PathProgramCache]: Analyzing trace with hash -153627576, now seen corresponding path program 218 times [2021-05-21 21:29:02,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:02,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216490131] [2021-05-21 21:29:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:02,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:02,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:02,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216490131] [2021-05-21 21:29:02,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216490131] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:02,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:02,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:02,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399739426] [2021-05-21 21:29:02,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:02,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:02,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:02,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:02,334 INFO L87 Difference]: Start difference. First operand 4327 states and 14599 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:03,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:03,760 INFO L93 Difference]: Finished difference Result 6643 states and 22162 transitions. [2021-05-21 21:29:03,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-21 21:29:03,760 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:03,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:03,772 INFO L225 Difference]: With dead ends: 6643 [2021-05-21 21:29:03,772 INFO L226 Difference]: Without dead ends: 6588 [2021-05-21 21:29:03,773 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 811.6ms TimeCoverageRelationStatistics Valid=319, Invalid=2987, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 21:29:03,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6588 states. [2021-05-21 21:29:03,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6588 to 4361. [2021-05-21 21:29:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4361 states, 4360 states have (on average 3.375) internal successors, (14715), 4360 states have internal predecessors, (14715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4361 states to 4361 states and 14715 transitions. [2021-05-21 21:29:03,857 INFO L78 Accepts]: Start accepts. Automaton has 4361 states and 14715 transitions. Word has length 39 [2021-05-21 21:29:03,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:03,858 INFO L482 AbstractCegarLoop]: Abstraction has 4361 states and 14715 transitions. [2021-05-21 21:29:03,858 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4361 states and 14715 transitions. [2021-05-21 21:29:03,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:03,863 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:03,864 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:03,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-05-21 21:29:03,864 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:03,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:03,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1019024646, now seen corresponding path program 219 times [2021-05-21 21:29:03,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:03,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063920729] [2021-05-21 21:29:03,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:04,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:04,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063920729] [2021-05-21 21:29:04,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063920729] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:04,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:04,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:04,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934391647] [2021-05-21 21:29:04,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:04,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:04,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:04,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:04,027 INFO L87 Difference]: Start difference. First operand 4361 states and 14715 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:05,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:05,745 INFO L93 Difference]: Finished difference Result 7356 states and 24634 transitions. [2021-05-21 21:29:05,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-21 21:29:05,745 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:05,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:05,757 INFO L225 Difference]: With dead ends: 7356 [2021-05-21 21:29:05,757 INFO L226 Difference]: Without dead ends: 7296 [2021-05-21 21:29:05,757 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 912.5ms TimeCoverageRelationStatistics Valid=353, Invalid=3679, Unknown=0, NotChecked=0, Total=4032 [2021-05-21 21:29:05,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7296 states. [2021-05-21 21:29:05,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7296 to 4359. [2021-05-21 21:29:05,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 3.375401560348784) internal successors, (14710), 4358 states have internal predecessors, (14710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:05,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 14710 transitions. [2021-05-21 21:29:05,837 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 14710 transitions. Word has length 39 [2021-05-21 21:29:05,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:05,837 INFO L482 AbstractCegarLoop]: Abstraction has 4359 states and 14710 transitions. [2021-05-21 21:29:05,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:05,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 14710 transitions. [2021-05-21 21:29:05,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:05,842 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:05,842 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:05,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-05-21 21:29:05,842 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:05,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:05,842 INFO L82 PathProgramCache]: Analyzing trace with hash -858378956, now seen corresponding path program 220 times [2021-05-21 21:29:05,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:05,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539936245] [2021-05-21 21:29:05,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:05,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:05,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539936245] [2021-05-21 21:29:05,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539936245] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:05,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:05,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:05,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785548371] [2021-05-21 21:29:05,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:05,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:05,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:05,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:05,999 INFO L87 Difference]: Start difference. First operand 4359 states and 14710 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:07,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:07,440 INFO L93 Difference]: Finished difference Result 6612 states and 22116 transitions. [2021-05-21 21:29:07,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-21 21:29:07,440 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:07,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:07,452 INFO L225 Difference]: With dead ends: 6612 [2021-05-21 21:29:07,452 INFO L226 Difference]: Without dead ends: 6521 [2021-05-21 21:29:07,453 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 778.9ms TimeCoverageRelationStatistics Valid=300, Invalid=2892, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 21:29:07,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6521 states. [2021-05-21 21:29:07,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6521 to 4359. [2021-05-21 21:29:07,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 3.3740247820100966) internal successors, (14704), 4358 states have internal predecessors, (14704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:07,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 14704 transitions. [2021-05-21 21:29:07,531 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 14704 transitions. Word has length 39 [2021-05-21 21:29:07,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:07,531 INFO L482 AbstractCegarLoop]: Abstraction has 4359 states and 14704 transitions. [2021-05-21 21:29:07,531 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:07,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 14704 transitions. [2021-05-21 21:29:07,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:07,537 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:07,537 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:07,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-05-21 21:29:07,537 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:07,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:07,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1934106134, now seen corresponding path program 221 times [2021-05-21 21:29:07,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:07,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392774889] [2021-05-21 21:29:07,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:07,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:07,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392774889] [2021-05-21 21:29:07,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392774889] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:07,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:07,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:07,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475592057] [2021-05-21 21:29:07,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:07,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:07,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:07,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:07,699 INFO L87 Difference]: Start difference. First operand 4359 states and 14704 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:09,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:09,435 INFO L93 Difference]: Finished difference Result 7445 states and 24958 transitions. [2021-05-21 21:29:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-21 21:29:09,436 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:09,448 INFO L225 Difference]: With dead ends: 7445 [2021-05-21 21:29:09,448 INFO L226 Difference]: Without dead ends: 7329 [2021-05-21 21:29:09,448 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 898.8ms TimeCoverageRelationStatistics Valid=338, Invalid=3694, Unknown=0, NotChecked=0, Total=4032 [2021-05-21 21:29:09,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7329 states. [2021-05-21 21:29:09,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7329 to 4321. [2021-05-21 21:29:09,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4321 states, 4320 states have (on average 3.3784722222222223) internal successors, (14595), 4320 states have internal predecessors, (14595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:09,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 14595 transitions. [2021-05-21 21:29:09,528 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 14595 transitions. Word has length 39 [2021-05-21 21:29:09,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:09,528 INFO L482 AbstractCegarLoop]: Abstraction has 4321 states and 14595 transitions. [2021-05-21 21:29:09,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:09,528 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 14595 transitions. [2021-05-21 21:29:09,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:09,534 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:09,534 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:09,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-05-21 21:29:09,534 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:09,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:09,534 INFO L82 PathProgramCache]: Analyzing trace with hash 291247450, now seen corresponding path program 222 times [2021-05-21 21:29:09,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:09,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868932751] [2021-05-21 21:29:09,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:09,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:09,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868932751] [2021-05-21 21:29:09,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868932751] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:09,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:09,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:09,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911916809] [2021-05-21 21:29:09,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:09,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:09,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:09,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:09,695 INFO L87 Difference]: Start difference. First operand 4321 states and 14595 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:11,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:11,062 INFO L93 Difference]: Finished difference Result 4939 states and 16469 transitions. [2021-05-21 21:29:11,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-21 21:29:11,063 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:11,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:11,071 INFO L225 Difference]: With dead ends: 4939 [2021-05-21 21:29:11,071 INFO L226 Difference]: Without dead ends: 4872 [2021-05-21 21:29:11,071 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 896.9ms TimeCoverageRelationStatistics Valid=339, Invalid=3201, Unknown=0, NotChecked=0, Total=3540 [2021-05-21 21:29:11,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2021-05-21 21:29:11,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 4347. [2021-05-21 21:29:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 4346 states have (on average 3.374597330878969) internal successors, (14666), 4346 states have internal predecessors, (14666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:11,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 14666 transitions. [2021-05-21 21:29:11,136 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 14666 transitions. Word has length 39 [2021-05-21 21:29:11,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:11,137 INFO L482 AbstractCegarLoop]: Abstraction has 4347 states and 14666 transitions. [2021-05-21 21:29:11,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:11,137 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 14666 transitions. [2021-05-21 21:29:11,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:11,143 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:11,143 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:11,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-05-21 21:29:11,143 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:11,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:11,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1428368520, now seen corresponding path program 223 times [2021-05-21 21:29:11,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:11,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443695474] [2021-05-21 21:29:11,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:11,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:11,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443695474] [2021-05-21 21:29:11,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443695474] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:11,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:11,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:11,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566865824] [2021-05-21 21:29:11,304 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:11,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:11,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:11,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:11,304 INFO L87 Difference]: Start difference. First operand 4347 states and 14666 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:13,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:13,113 INFO L93 Difference]: Finished difference Result 5045 states and 16728 transitions. [2021-05-21 21:29:13,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-21 21:29:13,113 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:13,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:13,121 INFO L225 Difference]: With dead ends: 5045 [2021-05-21 21:29:13,121 INFO L226 Difference]: Without dead ends: 5002 [2021-05-21 21:29:13,122 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 1239.1ms TimeCoverageRelationStatistics Valid=475, Invalid=4927, Unknown=0, NotChecked=0, Total=5402 [2021-05-21 21:29:13,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5002 states. [2021-05-21 21:29:13,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5002 to 4353. [2021-05-21 21:29:13,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 3.3729319852941178) internal successors, (14679), 4352 states have internal predecessors, (14679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:13,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 14679 transitions. [2021-05-21 21:29:13,189 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 14679 transitions. Word has length 39 [2021-05-21 21:29:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:13,189 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 14679 transitions. [2021-05-21 21:29:13,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:13,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 14679 transitions. [2021-05-21 21:29:13,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:13,194 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:13,194 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:13,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-05-21 21:29:13,195 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:13,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:13,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1086000474, now seen corresponding path program 224 times [2021-05-21 21:29:13,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:13,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988447970] [2021-05-21 21:29:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:13,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:13,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:13,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988447970] [2021-05-21 21:29:13,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988447970] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:13,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:13,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:13,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68395713] [2021-05-21 21:29:13,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:13,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:13,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:13,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:13,361 INFO L87 Difference]: Start difference. First operand 4353 states and 14679 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:15,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:15,093 INFO L93 Difference]: Finished difference Result 4984 states and 16578 transitions. [2021-05-21 21:29:15,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-21 21:29:15,093 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:15,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:15,101 INFO L225 Difference]: With dead ends: 4984 [2021-05-21 21:29:15,101 INFO L226 Difference]: Without dead ends: 4920 [2021-05-21 21:29:15,101 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 1179.5ms TimeCoverageRelationStatistics Valid=432, Invalid=4398, Unknown=0, NotChecked=0, Total=4830 [2021-05-21 21:29:15,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2021-05-21 21:29:15,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 4335. [2021-05-21 21:29:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4335 states, 4334 states have (on average 3.3770189201661283) internal successors, (14636), 4334 states have internal predecessors, (14636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:15,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4335 states to 4335 states and 14636 transitions. [2021-05-21 21:29:15,164 INFO L78 Accepts]: Start accepts. Automaton has 4335 states and 14636 transitions. Word has length 39 [2021-05-21 21:29:15,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:15,164 INFO L482 AbstractCegarLoop]: Abstraction has 4335 states and 14636 transitions. [2021-05-21 21:29:15,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:15,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4335 states and 14636 transitions. [2021-05-21 21:29:15,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:15,170 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:15,170 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:15,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-05-21 21:29:15,170 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:15,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:15,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1706434874, now seen corresponding path program 225 times [2021-05-21 21:29:15,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:15,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528614614] [2021-05-21 21:29:15,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:15,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:15,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528614614] [2021-05-21 21:29:15,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528614614] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:15,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:15,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:15,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136669372] [2021-05-21 21:29:15,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:15,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:15,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:15,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:15,331 INFO L87 Difference]: Start difference. First operand 4335 states and 14636 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:16,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:16,655 INFO L93 Difference]: Finished difference Result 4927 states and 16427 transitions. [2021-05-21 21:29:16,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-21 21:29:16,656 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:16,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:16,664 INFO L225 Difference]: With dead ends: 4927 [2021-05-21 21:29:16,664 INFO L226 Difference]: Without dead ends: 4860 [2021-05-21 21:29:16,664 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 854.7ms TimeCoverageRelationStatistics Valid=317, Invalid=3105, Unknown=0, NotChecked=0, Total=3422 [2021-05-21 21:29:16,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4860 states. [2021-05-21 21:29:16,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4860 to 4355. [2021-05-21 21:29:16,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4354 states have (on average 3.377124483233808) internal successors, (14704), 4354 states have internal predecessors, (14704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:16,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 14704 transitions. [2021-05-21 21:29:16,736 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 14704 transitions. Word has length 39 [2021-05-21 21:29:16,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:16,736 INFO L482 AbstractCegarLoop]: Abstraction has 4355 states and 14704 transitions. [2021-05-21 21:29:16,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:16,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 14704 transitions. [2021-05-21 21:29:16,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:16,742 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:16,742 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:16,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-05-21 21:29:16,742 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:16,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:16,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1575840026, now seen corresponding path program 226 times [2021-05-21 21:29:16,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:16,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204088651] [2021-05-21 21:29:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:16,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:16,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204088651] [2021-05-21 21:29:16,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204088651] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:16,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:16,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:16,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144406278] [2021-05-21 21:29:16,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:16,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:16,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:16,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:16,928 INFO L87 Difference]: Start difference. First operand 4355 states and 14704 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:18,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:18,159 INFO L93 Difference]: Finished difference Result 4902 states and 16318 transitions. [2021-05-21 21:29:18,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:29:18,159 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:18,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:18,167 INFO L225 Difference]: With dead ends: 4902 [2021-05-21 21:29:18,168 INFO L226 Difference]: Without dead ends: 4839 [2021-05-21 21:29:18,168 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 844.7ms TimeCoverageRelationStatistics Valid=313, Invalid=2879, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 21:29:18,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4839 states. [2021-05-21 21:29:18,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4839 to 4355. [2021-05-21 21:29:18,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4354 states have (on average 3.3762057877813505) internal successors, (14700), 4354 states have internal predecessors, (14700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:18,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 14700 transitions. [2021-05-21 21:29:18,231 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 14700 transitions. Word has length 39 [2021-05-21 21:29:18,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:18,231 INFO L482 AbstractCegarLoop]: Abstraction has 4355 states and 14700 transitions. [2021-05-21 21:29:18,231 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:18,231 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 14700 transitions. [2021-05-21 21:29:18,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:18,235 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:18,235 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:18,235 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-05-21 21:29:18,235 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:18,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:18,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1440161434, now seen corresponding path program 227 times [2021-05-21 21:29:18,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:18,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291187696] [2021-05-21 21:29:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:18,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:18,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291187696] [2021-05-21 21:29:18,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291187696] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:18,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:18,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:18,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823732165] [2021-05-21 21:29:18,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:18,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:18,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:18,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:18,417 INFO L87 Difference]: Start difference. First operand 4355 states and 14700 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:20,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:20,247 INFO L93 Difference]: Finished difference Result 5070 states and 16753 transitions. [2021-05-21 21:29:20,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-21 21:29:20,247 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:20,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:20,255 INFO L225 Difference]: With dead ends: 5070 [2021-05-21 21:29:20,255 INFO L226 Difference]: Without dead ends: 5027 [2021-05-21 21:29:20,256 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1529 ImplicationChecksByTransitivity, 1248.0ms TimeCoverageRelationStatistics Valid=458, Invalid=4944, Unknown=0, NotChecked=0, Total=5402 [2021-05-21 21:29:20,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2021-05-21 21:29:20,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 4367. [2021-05-21 21:29:20,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4367 states, 4366 states have (on average 3.375171781951443) internal successors, (14736), 4366 states have internal predecessors, (14736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:20,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4367 states to 4367 states and 14736 transitions. [2021-05-21 21:29:20,329 INFO L78 Accepts]: Start accepts. Automaton has 4367 states and 14736 transitions. Word has length 39 [2021-05-21 21:29:20,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:20,329 INFO L482 AbstractCegarLoop]: Abstraction has 4367 states and 14736 transitions. [2021-05-21 21:29:20,329 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:20,329 INFO L276 IsEmpty]: Start isEmpty. Operand 4367 states and 14736 transitions. [2021-05-21 21:29:20,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:20,335 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:20,335 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:20,335 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-05-21 21:29:20,335 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:20,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:20,335 INFO L82 PathProgramCache]: Analyzing trace with hash -340436868, now seen corresponding path program 228 times [2021-05-21 21:29:20,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:20,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616410955] [2021-05-21 21:29:20,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:20,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:20,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616410955] [2021-05-21 21:29:20,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616410955] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:20,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:20,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:20,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395735690] [2021-05-21 21:29:20,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:20,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:20,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:20,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:20,501 INFO L87 Difference]: Start difference. First operand 4367 states and 14736 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:22,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:22,287 INFO L93 Difference]: Finished difference Result 5050 states and 16695 transitions. [2021-05-21 21:29:22,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-21 21:29:22,287 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:22,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:22,295 INFO L225 Difference]: With dead ends: 5050 [2021-05-21 21:29:22,295 INFO L226 Difference]: Without dead ends: 4998 [2021-05-21 21:29:22,296 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 1237.3ms TimeCoverageRelationStatistics Valid=446, Invalid=4810, Unknown=0, NotChecked=0, Total=5256 [2021-05-21 21:29:22,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4998 states. [2021-05-21 21:29:22,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4998 to 4359. [2021-05-21 21:29:22,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 3.3767783386874712) internal successors, (14716), 4358 states have internal predecessors, (14716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:22,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 14716 transitions. [2021-05-21 21:29:22,365 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 14716 transitions. Word has length 39 [2021-05-21 21:29:22,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:22,365 INFO L482 AbstractCegarLoop]: Abstraction has 4359 states and 14716 transitions. [2021-05-21 21:29:22,365 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:22,365 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 14716 transitions. [2021-05-21 21:29:22,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:22,370 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:22,370 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:22,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-05-21 21:29:22,370 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:22,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:22,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1936322292, now seen corresponding path program 229 times [2021-05-21 21:29:22,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:22,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356652912] [2021-05-21 21:29:22,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:22,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:22,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:22,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356652912] [2021-05-21 21:29:22,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356652912] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:22,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:22,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:22,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693793756] [2021-05-21 21:29:22,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:22,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:22,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:22,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:22,531 INFO L87 Difference]: Start difference. First operand 4359 states and 14716 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:23,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:23,859 INFO L93 Difference]: Finished difference Result 4980 states and 16485 transitions. [2021-05-21 21:29:23,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-21 21:29:23,859 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:23,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:23,867 INFO L225 Difference]: With dead ends: 4980 [2021-05-21 21:29:23,867 INFO L226 Difference]: Without dead ends: 4925 [2021-05-21 21:29:23,868 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 908.1ms TimeCoverageRelationStatistics Valid=348, Invalid=3192, Unknown=0, NotChecked=0, Total=3540 [2021-05-21 21:29:23,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2021-05-21 21:29:23,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 4361. [2021-05-21 21:29:23,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4361 states, 4360 states have (on average 3.3759174311926605) internal successors, (14719), 4360 states have internal predecessors, (14719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:23,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4361 states to 4361 states and 14719 transitions. [2021-05-21 21:29:23,931 INFO L78 Accepts]: Start accepts. Automaton has 4361 states and 14719 transitions. Word has length 39 [2021-05-21 21:29:23,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:23,931 INFO L482 AbstractCegarLoop]: Abstraction has 4361 states and 14719 transitions. [2021-05-21 21:29:23,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:23,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4361 states and 14719 transitions. [2021-05-21 21:29:23,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:23,936 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:23,936 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:23,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-05-21 21:29:23,936 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:23,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:23,937 INFO L82 PathProgramCache]: Analyzing trace with hash -763670070, now seen corresponding path program 230 times [2021-05-21 21:29:23,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:23,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793986223] [2021-05-21 21:29:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:24,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:24,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793986223] [2021-05-21 21:29:24,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793986223] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:24,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:24,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:24,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438375204] [2021-05-21 21:29:24,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:24,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:24,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:24,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:24,108 INFO L87 Difference]: Start difference. First operand 4361 states and 14719 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:25,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:25,349 INFO L93 Difference]: Finished difference Result 4918 states and 16340 transitions. [2021-05-21 21:29:25,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-21 21:29:25,349 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:25,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:25,357 INFO L225 Difference]: With dead ends: 4918 [2021-05-21 21:29:25,357 INFO L226 Difference]: Without dead ends: 4872 [2021-05-21 21:29:25,358 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 819.3ms TimeCoverageRelationStatistics Valid=305, Invalid=2775, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:29:25,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2021-05-21 21:29:25,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 4365. [2021-05-21 21:29:25,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4365 states, 4364 states have (on average 3.3746562786434464) internal successors, (14727), 4364 states have internal predecessors, (14727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 14727 transitions. [2021-05-21 21:29:25,440 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 14727 transitions. Word has length 39 [2021-05-21 21:29:25,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:25,440 INFO L482 AbstractCegarLoop]: Abstraction has 4365 states and 14727 transitions. [2021-05-21 21:29:25,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:25,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 14727 transitions. [2021-05-21 21:29:25,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:25,446 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:25,446 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:25,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-05-21 21:29:25,446 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:25,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:25,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1011136232, now seen corresponding path program 231 times [2021-05-21 21:29:25,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:25,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357690239] [2021-05-21 21:29:25,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:25,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:25,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357690239] [2021-05-21 21:29:25,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357690239] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:25,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:25,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:25,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603484635] [2021-05-21 21:29:25,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:25,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:25,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:25,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:25,611 INFO L87 Difference]: Start difference. First operand 4365 states and 14727 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:26,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:26,929 INFO L93 Difference]: Finished difference Result 4911 states and 16317 transitions. [2021-05-21 21:29:26,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:29:26,929 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:26,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:26,937 INFO L225 Difference]: With dead ends: 4911 [2021-05-21 21:29:26,937 INFO L226 Difference]: Without dead ends: 4862 [2021-05-21 21:29:26,938 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 877.1ms TimeCoverageRelationStatistics Valid=328, Invalid=2978, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 21:29:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2021-05-21 21:29:26,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 4355. [2021-05-21 21:29:27,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4354 states have (on average 3.3780431786862657) internal successors, (14708), 4354 states have internal predecessors, (14708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 14708 transitions. [2021-05-21 21:29:27,008 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 14708 transitions. Word has length 39 [2021-05-21 21:29:27,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:27,008 INFO L482 AbstractCegarLoop]: Abstraction has 4355 states and 14708 transitions. [2021-05-21 21:29:27,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:27,008 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 14708 transitions. [2021-05-21 21:29:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:27,014 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:27,014 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:27,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-05-21 21:29:27,014 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:27,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:27,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1652205256, now seen corresponding path program 232 times [2021-05-21 21:29:27,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:27,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107346069] [2021-05-21 21:29:27,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:27,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:27,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107346069] [2021-05-21 21:29:27,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107346069] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:27,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:27,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:27,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372870418] [2021-05-21 21:29:27,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:27,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:27,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:27,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:27,173 INFO L87 Difference]: Start difference. First operand 4355 states and 14708 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:28,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:28,496 INFO L93 Difference]: Finished difference Result 4876 states and 16287 transitions. [2021-05-21 21:29:28,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-21 21:29:28,496 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:28,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:28,504 INFO L225 Difference]: With dead ends: 4876 [2021-05-21 21:29:28,504 INFO L226 Difference]: Without dead ends: 4809 [2021-05-21 21:29:28,505 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 825.3ms TimeCoverageRelationStatistics Valid=303, Invalid=2889, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 21:29:28,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4809 states. [2021-05-21 21:29:28,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4809 to 4373. [2021-05-21 21:29:28,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 4372 states have (on average 3.375114364135407) internal successors, (14756), 4372 states have internal predecessors, (14756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 14756 transitions. [2021-05-21 21:29:28,579 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 14756 transitions. Word has length 39 [2021-05-21 21:29:28,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:28,579 INFO L482 AbstractCegarLoop]: Abstraction has 4373 states and 14756 transitions. [2021-05-21 21:29:28,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:28,579 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 14756 transitions. [2021-05-21 21:29:28,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:28,585 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:28,585 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:28,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-05-21 21:29:28,585 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:28,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:28,585 INFO L82 PathProgramCache]: Analyzing trace with hash 923146070, now seen corresponding path program 233 times [2021-05-21 21:29:28,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:28,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586528105] [2021-05-21 21:29:28,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:28,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:28,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:28,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586528105] [2021-05-21 21:29:28,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586528105] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:28,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:28,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:28,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051320593] [2021-05-21 21:29:28,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:28,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:28,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:28,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:28,748 INFO L87 Difference]: Start difference. First operand 4373 states and 14756 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:30,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:30,532 INFO L93 Difference]: Finished difference Result 4981 states and 16542 transitions. [2021-05-21 21:29:30,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-21 21:29:30,532 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:30,541 INFO L225 Difference]: With dead ends: 4981 [2021-05-21 21:29:30,541 INFO L226 Difference]: Without dead ends: 4938 [2021-05-21 21:29:30,541 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 1191.4ms TimeCoverageRelationStatistics Valid=439, Invalid=4531, Unknown=0, NotChecked=0, Total=4970 [2021-05-21 21:29:30,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4938 states. [2021-05-21 21:29:30,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4938 to 4379. [2021-05-21 21:29:30,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 4378 states have (on average 3.373458200091366) internal successors, (14769), 4378 states have internal predecessors, (14769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:30,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 14769 transitions. [2021-05-21 21:29:30,612 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 14769 transitions. Word has length 39 [2021-05-21 21:29:30,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:30,612 INFO L482 AbstractCegarLoop]: Abstraction has 4379 states and 14769 transitions. [2021-05-21 21:29:30,612 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:30,613 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 14769 transitions. [2021-05-21 21:29:30,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:30,618 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:30,618 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:30,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-05-21 21:29:30,618 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:30,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:30,619 INFO L82 PathProgramCache]: Analyzing trace with hash -857452232, now seen corresponding path program 234 times [2021-05-21 21:29:30,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:30,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433528878] [2021-05-21 21:29:30,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:30,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:30,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:30,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433528878] [2021-05-21 21:29:30,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433528878] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:30,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:30,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:30,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853968523] [2021-05-21 21:29:30,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:30,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:30,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:30,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:30,782 INFO L87 Difference]: Start difference. First operand 4379 states and 14769 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:32,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:32,438 INFO L93 Difference]: Finished difference Result 4920 states and 16392 transitions. [2021-05-21 21:29:32,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-21 21:29:32,438 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:32,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:32,446 INFO L225 Difference]: With dead ends: 4920 [2021-05-21 21:29:32,446 INFO L226 Difference]: Without dead ends: 4856 [2021-05-21 21:29:32,446 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 1091.0ms TimeCoverageRelationStatistics Valid=396, Invalid=4026, Unknown=0, NotChecked=0, Total=4422 [2021-05-21 21:29:32,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2021-05-21 21:29:32,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4361. [2021-05-21 21:29:32,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4361 states, 4360 states have (on average 3.3770642201834864) internal successors, (14724), 4360 states have internal predecessors, (14724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:32,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4361 states to 4361 states and 14724 transitions. [2021-05-21 21:29:32,509 INFO L78 Accepts]: Start accepts. Automaton has 4361 states and 14724 transitions. Word has length 39 [2021-05-21 21:29:32,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:32,509 INFO L482 AbstractCegarLoop]: Abstraction has 4361 states and 14724 transitions. [2021-05-21 21:29:32,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:32,509 INFO L276 IsEmpty]: Start isEmpty. Operand 4361 states and 14724 transitions. [2021-05-21 21:29:32,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:32,514 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:32,514 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:32,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-05-21 21:29:32,515 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:32,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:32,515 INFO L82 PathProgramCache]: Analyzing trace with hash 447403064, now seen corresponding path program 235 times [2021-05-21 21:29:32,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:32,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992814715] [2021-05-21 21:29:32,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:32,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:32,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992814715] [2021-05-21 21:29:32,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992814715] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:32,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:32,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:32,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392336897] [2021-05-21 21:29:32,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:32,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:32,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:32,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:32,672 INFO L87 Difference]: Start difference. First operand 4361 states and 14724 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:33,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:33,971 INFO L93 Difference]: Finished difference Result 4840 states and 16179 transitions. [2021-05-21 21:29:33,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-21 21:29:33,971 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:33,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:33,979 INFO L225 Difference]: With dead ends: 4840 [2021-05-21 21:29:33,979 INFO L226 Difference]: Without dead ends: 4773 [2021-05-21 21:29:33,979 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 776.6ms TimeCoverageRelationStatistics Valid=282, Invalid=2798, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:29:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4773 states. [2021-05-21 21:29:34,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4773 to 4373. [2021-05-21 21:29:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 4372 states have (on average 3.3737419945105214) internal successors, (14750), 4372 states have internal predecessors, (14750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 14750 transitions. [2021-05-21 21:29:34,043 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 14750 transitions. Word has length 39 [2021-05-21 21:29:34,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:34,043 INFO L482 AbstractCegarLoop]: Abstraction has 4373 states and 14750 transitions. [2021-05-21 21:29:34,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:34,043 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 14750 transitions. [2021-05-21 21:29:34,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:34,048 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:34,048 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:34,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-05-21 21:29:34,048 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:34,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:34,049 INFO L82 PathProgramCache]: Analyzing trace with hash 805473272, now seen corresponding path program 236 times [2021-05-21 21:29:34,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:34,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065645816] [2021-05-21 21:29:34,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:34,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:34,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065645816] [2021-05-21 21:29:34,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065645816] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:34,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:34,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:34,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233763647] [2021-05-21 21:29:34,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:34,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:34,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:34,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:34,212 INFO L87 Difference]: Start difference. First operand 4373 states and 14750 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:35,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:35,354 INFO L93 Difference]: Finished difference Result 4817 states and 16075 transitions. [2021-05-21 21:29:35,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-21 21:29:35,354 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:35,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:35,362 INFO L225 Difference]: With dead ends: 4817 [2021-05-21 21:29:35,362 INFO L226 Difference]: Without dead ends: 4774 [2021-05-21 21:29:35,362 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 711.4ms TimeCoverageRelationStatistics Valid=255, Invalid=2397, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:29:35,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4774 states. [2021-05-21 21:29:35,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4774 to 4391. [2021-05-21 21:29:35,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 4390 states have (on average 3.3687927107061504) internal successors, (14789), 4390 states have internal predecessors, (14789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:35,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 14789 transitions. [2021-05-21 21:29:35,432 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 14789 transitions. Word has length 39 [2021-05-21 21:29:35,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:35,432 INFO L482 AbstractCegarLoop]: Abstraction has 4391 states and 14789 transitions. [2021-05-21 21:29:35,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:35,432 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 14789 transitions. [2021-05-21 21:29:35,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:35,438 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:35,438 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:35,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-05-21 21:29:35,438 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:35,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:35,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1635004442, now seen corresponding path program 237 times [2021-05-21 21:29:35,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:35,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755261775] [2021-05-21 21:29:35,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:35,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:35,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755261775] [2021-05-21 21:29:35,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755261775] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:35,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:35,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:35,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621368105] [2021-05-21 21:29:35,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:35,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:35,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:35,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:35,608 INFO L87 Difference]: Start difference. First operand 4391 states and 14789 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:36,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:36,764 INFO L93 Difference]: Finished difference Result 4766 states and 15952 transitions. [2021-05-21 21:29:36,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:29:36,764 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:36,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:36,772 INFO L225 Difference]: With dead ends: 4766 [2021-05-21 21:29:36,772 INFO L226 Difference]: Without dead ends: 4703 [2021-05-21 21:29:36,773 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 725.1ms TimeCoverageRelationStatistics Valid=254, Invalid=2398, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:29:36,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4703 states. [2021-05-21 21:29:36,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4703 to 4373. [2021-05-21 21:29:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 4372 states have (on average 3.372369624885636) internal successors, (14744), 4372 states have internal predecessors, (14744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:36,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 14744 transitions. [2021-05-21 21:29:36,840 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 14744 transitions. Word has length 39 [2021-05-21 21:29:36,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:36,840 INFO L482 AbstractCegarLoop]: Abstraction has 4373 states and 14744 transitions. [2021-05-21 21:29:36,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:36,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 14744 transitions. [2021-05-21 21:29:36,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:36,846 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:36,846 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:36,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-05-21 21:29:36,846 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:36,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:36,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1861188970, now seen corresponding path program 238 times [2021-05-21 21:29:36,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:36,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963277348] [2021-05-21 21:29:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:37,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:37,020 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:37,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963277348] [2021-05-21 21:29:37,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963277348] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:37,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:37,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:37,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518199319] [2021-05-21 21:29:37,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:37,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:37,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:37,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:37,021 INFO L87 Difference]: Start difference. First operand 4373 states and 14744 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:38,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:38,722 INFO L93 Difference]: Finished difference Result 4937 states and 16402 transitions. [2021-05-21 21:29:38,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-21 21:29:38,722 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:38,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:38,730 INFO L225 Difference]: With dead ends: 4937 [2021-05-21 21:29:38,730 INFO L226 Difference]: Without dead ends: 4894 [2021-05-21 21:29:38,731 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 1091.5ms TimeCoverageRelationStatistics Valid=378, Invalid=4044, Unknown=0, NotChecked=0, Total=4422 [2021-05-21 21:29:38,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4894 states. [2021-05-21 21:29:38,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4894 to 4382. [2021-05-21 21:29:38,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 3.370919881305638) internal successors, (14768), 4381 states have internal predecessors, (14768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:38,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 14768 transitions. [2021-05-21 21:29:38,796 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 14768 transitions. Word has length 39 [2021-05-21 21:29:38,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:38,796 INFO L482 AbstractCegarLoop]: Abstraction has 4382 states and 14768 transitions. [2021-05-21 21:29:38,796 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:38,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 14768 transitions. [2021-05-21 21:29:38,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:38,802 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:38,802 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:38,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-05-21 21:29:38,802 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:38,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:38,802 INFO L82 PathProgramCache]: Analyzing trace with hash 653180024, now seen corresponding path program 239 times [2021-05-21 21:29:38,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:38,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14781446] [2021-05-21 21:29:38,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:38,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:38,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14781446] [2021-05-21 21:29:38,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14781446] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:38,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:38,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:38,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846155268] [2021-05-21 21:29:38,964 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:38,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:38,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:38,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:38,965 INFO L87 Difference]: Start difference. First operand 4382 states and 14768 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:40,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:40,565 INFO L93 Difference]: Finished difference Result 4932 states and 16383 transitions. [2021-05-21 21:29:40,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-21 21:29:40,565 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:40,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:40,573 INFO L225 Difference]: With dead ends: 4932 [2021-05-21 21:29:40,573 INFO L226 Difference]: Without dead ends: 4880 [2021-05-21 21:29:40,573 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 1044.3ms TimeCoverageRelationStatistics Valid=363, Invalid=3927, Unknown=0, NotChecked=0, Total=4290 [2021-05-21 21:29:40,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4880 states. [2021-05-21 21:29:40,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4880 to 4376. [2021-05-21 21:29:40,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 3.3718857142857144) internal successors, (14752), 4375 states have internal predecessors, (14752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:40,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 14752 transitions. [2021-05-21 21:29:40,634 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 14752 transitions. Word has length 39 [2021-05-21 21:29:40,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:40,634 INFO L482 AbstractCegarLoop]: Abstraction has 4376 states and 14752 transitions. [2021-05-21 21:29:40,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:40,635 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 14752 transitions. [2021-05-21 21:29:40,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:40,640 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:40,640 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:40,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-05-21 21:29:40,640 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:40,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:40,641 INFO L82 PathProgramCache]: Analyzing trace with hash 896359096, now seen corresponding path program 240 times [2021-05-21 21:29:40,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:40,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794392415] [2021-05-21 21:29:40,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:40,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:40,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:40,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794392415] [2021-05-21 21:29:40,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794392415] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:40,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:40,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:40,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864633364] [2021-05-21 21:29:40,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:40,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:40,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:40,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:40,798 INFO L87 Difference]: Start difference. First operand 4376 states and 14752 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:41,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:41,931 INFO L93 Difference]: Finished difference Result 4913 states and 16289 transitions. [2021-05-21 21:29:41,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:29:41,931 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:41,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:41,939 INFO L225 Difference]: With dead ends: 4913 [2021-05-21 21:29:41,939 INFO L226 Difference]: Without dead ends: 4870 [2021-05-21 21:29:41,939 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 710.5ms TimeCoverageRelationStatistics Valid=265, Invalid=2491, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 21:29:41,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4870 states. [2021-05-21 21:29:41,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4870 to 4385. [2021-05-21 21:29:41,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 4384 states have (on average 3.3697536496350367) internal successors, (14773), 4384 states have internal predecessors, (14773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:42,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 14773 transitions. [2021-05-21 21:29:42,002 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 14773 transitions. Word has length 39 [2021-05-21 21:29:42,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:42,002 INFO L482 AbstractCegarLoop]: Abstraction has 4385 states and 14773 transitions. [2021-05-21 21:29:42,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:42,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 14773 transitions. [2021-05-21 21:29:42,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:42,007 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:42,007 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:42,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-05-21 21:29:42,007 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:42,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:42,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1648501064, now seen corresponding path program 241 times [2021-05-21 21:29:42,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:42,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297424705] [2021-05-21 21:29:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:42,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:42,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297424705] [2021-05-21 21:29:42,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297424705] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:42,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:42,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:42,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813771375] [2021-05-21 21:29:42,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:42,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:42,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:42,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:42,187 INFO L87 Difference]: Start difference. First operand 4385 states and 14773 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:43,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:43,365 INFO L93 Difference]: Finished difference Result 4876 states and 16203 transitions. [2021-05-21 21:29:43,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:29:43,365 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:43,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:43,373 INFO L225 Difference]: With dead ends: 4876 [2021-05-21 21:29:43,374 INFO L226 Difference]: Without dead ends: 4825 [2021-05-21 21:29:43,374 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 767.2ms TimeCoverageRelationStatistics Valid=272, Invalid=2590, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 21:29:43,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2021-05-21 21:29:43,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 4379. [2021-05-21 21:29:43,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 4378 states have (on average 3.3707172224760162) internal successors, (14757), 4378 states have internal predecessors, (14757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:43,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 14757 transitions. [2021-05-21 21:29:43,445 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 14757 transitions. Word has length 39 [2021-05-21 21:29:43,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:43,445 INFO L482 AbstractCegarLoop]: Abstraction has 4379 states and 14757 transitions. [2021-05-21 21:29:43,445 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 14757 transitions. [2021-05-21 21:29:43,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:43,450 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:43,450 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:43,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-05-21 21:29:43,451 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:43,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:43,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1031282662, now seen corresponding path program 242 times [2021-05-21 21:29:43,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:43,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447655304] [2021-05-21 21:29:43,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:43,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:43,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:43,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447655304] [2021-05-21 21:29:43,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447655304] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:43,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:43,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:43,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847677991] [2021-05-21 21:29:43,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:43,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:43,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:43,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:43,612 INFO L87 Difference]: Start difference. First operand 4379 states and 14757 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:44,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:44,724 INFO L93 Difference]: Finished difference Result 4848 states and 16132 transitions. [2021-05-21 21:29:44,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 21:29:44,724 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:44,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:44,732 INFO L225 Difference]: With dead ends: 4848 [2021-05-21 21:29:44,732 INFO L226 Difference]: Without dead ends: 4802 [2021-05-21 21:29:44,732 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 678.9ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:29:44,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4802 states. [2021-05-21 21:29:44,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4802 to 4386. [2021-05-21 21:29:44,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4385 states have (on average 3.368757126567845) internal successors, (14772), 4385 states have internal predecessors, (14772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:44,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 14772 transitions. [2021-05-21 21:29:44,803 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 14772 transitions. Word has length 39 [2021-05-21 21:29:44,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:44,803 INFO L482 AbstractCegarLoop]: Abstraction has 4386 states and 14772 transitions. [2021-05-21 21:29:44,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:44,803 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 14772 transitions. [2021-05-21 21:29:44,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:44,809 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:44,809 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:44,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-05-21 21:29:44,809 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:44,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:44,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1828617144, now seen corresponding path program 243 times [2021-05-21 21:29:44,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:44,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288759935] [2021-05-21 21:29:44,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:44,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:44,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288759935] [2021-05-21 21:29:44,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288759935] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:44,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:44,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:44,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572569271] [2021-05-21 21:29:44,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:44,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:44,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:44,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:44,971 INFO L87 Difference]: Start difference. First operand 4386 states and 14772 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:46,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:46,138 INFO L93 Difference]: Finished difference Result 4808 states and 16038 transitions. [2021-05-21 21:29:46,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-21 21:29:46,138 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:46,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:46,146 INFO L225 Difference]: With dead ends: 4808 [2021-05-21 21:29:46,146 INFO L226 Difference]: Without dead ends: 4747 [2021-05-21 21:29:46,147 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 737.2ms TimeCoverageRelationStatistics Valid=263, Invalid=2493, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 21:29:46,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4747 states. [2021-05-21 21:29:46,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4747 to 4370. [2021-05-21 21:29:46,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4370 states, 4369 states have (on average 3.373769741359579) internal successors, (14740), 4369 states have internal predecessors, (14740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:46,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 14740 transitions. [2021-05-21 21:29:46,212 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 14740 transitions. Word has length 39 [2021-05-21 21:29:46,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:46,212 INFO L482 AbstractCegarLoop]: Abstraction has 4370 states and 14740 transitions. [2021-05-21 21:29:46,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:46,212 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 14740 transitions. [2021-05-21 21:29:46,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:46,217 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:46,217 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:46,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-05-21 21:29:46,217 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:46,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:46,218 INFO L82 PathProgramCache]: Analyzing trace with hash -458552998, now seen corresponding path program 244 times [2021-05-21 21:29:46,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:46,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475321888] [2021-05-21 21:29:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:46,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:46,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475321888] [2021-05-21 21:29:46,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475321888] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:46,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:46,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:46,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721968089] [2021-05-21 21:29:46,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:46,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:46,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:46,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:46,404 INFO L87 Difference]: Start difference. First operand 4370 states and 14740 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:47,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:47,565 INFO L93 Difference]: Finished difference Result 4803 states and 16056 transitions. [2021-05-21 21:29:47,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:29:47,565 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:47,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:47,573 INFO L225 Difference]: With dead ends: 4803 [2021-05-21 21:29:47,573 INFO L226 Difference]: Without dead ends: 4740 [2021-05-21 21:29:47,573 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 772.9ms TimeCoverageRelationStatistics Valid=269, Invalid=2487, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 21:29:47,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4740 states. [2021-05-21 21:29:47,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4740 to 4374. [2021-05-21 21:29:47,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 4373 states have (on average 3.372970500800366) internal successors, (14750), 4373 states have internal predecessors, (14750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 14750 transitions. [2021-05-21 21:29:47,640 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 14750 transitions. Word has length 39 [2021-05-21 21:29:47,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:47,640 INFO L482 AbstractCegarLoop]: Abstraction has 4374 states and 14750 transitions. [2021-05-21 21:29:47,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:47,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 14750 transitions. [2021-05-21 21:29:47,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:47,645 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:47,645 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:47,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-05-21 21:29:47,645 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:47,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:47,646 INFO L82 PathProgramCache]: Analyzing trace with hash -704045096, now seen corresponding path program 245 times [2021-05-21 21:29:47,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:47,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312056953] [2021-05-21 21:29:47,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:47,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:47,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312056953] [2021-05-21 21:29:47,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312056953] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:47,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:47,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:47,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987177243] [2021-05-21 21:29:47,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:47,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:47,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:47,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:47,808 INFO L87 Difference]: Start difference. First operand 4374 states and 14750 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:48,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:48,927 INFO L93 Difference]: Finished difference Result 4842 states and 16145 transitions. [2021-05-21 21:29:48,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:29:48,927 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:48,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:48,934 INFO L225 Difference]: With dead ends: 4842 [2021-05-21 21:29:48,934 INFO L226 Difference]: Without dead ends: 4799 [2021-05-21 21:29:48,935 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 710.6ms TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:29:48,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2021-05-21 21:29:48,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 4392. [2021-05-21 21:29:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4391 states have (on average 3.3680255067182876) internal successors, (14789), 4391 states have internal predecessors, (14789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:48,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 14789 transitions. [2021-05-21 21:29:48,997 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 14789 transitions. Word has length 39 [2021-05-21 21:29:48,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:48,997 INFO L482 AbstractCegarLoop]: Abstraction has 4392 states and 14789 transitions. [2021-05-21 21:29:48,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:48,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 14789 transitions. [2021-05-21 21:29:49,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:49,002 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:49,002 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:49,002 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-05-21 21:29:49,002 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:49,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:49,003 INFO L82 PathProgramCache]: Analyzing trace with hash 125486074, now seen corresponding path program 246 times [2021-05-21 21:29:49,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:49,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495212961] [2021-05-21 21:29:49,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:49,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:49,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:49,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495212961] [2021-05-21 21:29:49,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495212961] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:49,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:49,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:49,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803676825] [2021-05-21 21:29:49,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:49,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:49,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:49,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:49,161 INFO L87 Difference]: Start difference. First operand 4392 states and 14789 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:50,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:50,277 INFO L93 Difference]: Finished difference Result 4773 states and 15971 transitions. [2021-05-21 21:29:50,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:29:50,277 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:50,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:50,285 INFO L225 Difference]: With dead ends: 4773 [2021-05-21 21:29:50,285 INFO L226 Difference]: Without dead ends: 4710 [2021-05-21 21:29:50,286 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 687.1ms TimeCoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:29:50,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2021-05-21 21:29:50,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 4374. [2021-05-21 21:29:50,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 4373 states have (on average 3.372055796935742) internal successors, (14746), 4373 states have internal predecessors, (14746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:50,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 14746 transitions. [2021-05-21 21:29:50,355 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 14746 transitions. Word has length 39 [2021-05-21 21:29:50,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:50,355 INFO L482 AbstractCegarLoop]: Abstraction has 4374 states and 14746 transitions. [2021-05-21 21:29:50,355 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:50,355 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 14746 transitions. [2021-05-21 21:29:50,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:50,361 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:50,361 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:50,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-05-21 21:29:50,361 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:50,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:50,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1887749734, now seen corresponding path program 247 times [2021-05-21 21:29:50,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:50,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630746164] [2021-05-21 21:29:50,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:50,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:50,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630746164] [2021-05-21 21:29:50,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630746164] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:50,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:50,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:50,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707384444] [2021-05-21 21:29:50,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:50,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:50,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:50,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:50,543 INFO L87 Difference]: Start difference. First operand 4374 states and 14746 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:51,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:51,751 INFO L93 Difference]: Finished difference Result 4842 states and 16147 transitions. [2021-05-21 21:29:51,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-21 21:29:51,751 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:51,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:51,760 INFO L225 Difference]: With dead ends: 4842 [2021-05-21 21:29:51,760 INFO L226 Difference]: Without dead ends: 4787 [2021-05-21 21:29:51,760 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 798.5ms TimeCoverageRelationStatistics Valid=295, Invalid=2785, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:29:51,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4787 states. [2021-05-21 21:29:51,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4787 to 4380. [2021-05-21 21:29:51,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4380 states, 4379 states have (on average 3.3704042018725735) internal successors, (14759), 4379 states have internal predecessors, (14759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:51,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 14759 transitions. [2021-05-21 21:29:51,832 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 14759 transitions. Word has length 39 [2021-05-21 21:29:51,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:51,832 INFO L482 AbstractCegarLoop]: Abstraction has 4380 states and 14759 transitions. [2021-05-21 21:29:51,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:51,832 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 14759 transitions. [2021-05-21 21:29:51,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:51,838 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:51,838 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:51,838 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-05-21 21:29:51,838 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:51,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:51,838 INFO L82 PathProgramCache]: Analyzing trace with hash -550691720, now seen corresponding path program 248 times [2021-05-21 21:29:51,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:51,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365896756] [2021-05-21 21:29:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:52,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:52,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365896756] [2021-05-21 21:29:52,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365896756] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:52,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:52,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:52,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800759913] [2021-05-21 21:29:52,000 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:52,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:52,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:52,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:52,000 INFO L87 Difference]: Start difference. First operand 4380 states and 14759 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:53,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:53,155 INFO L93 Difference]: Finished difference Result 4818 states and 16077 transitions. [2021-05-21 21:29:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:29:53,156 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:53,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:53,163 INFO L225 Difference]: With dead ends: 4818 [2021-05-21 21:29:53,163 INFO L226 Difference]: Without dead ends: 4775 [2021-05-21 21:29:53,164 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 729.0ms TimeCoverageRelationStatistics Valid=271, Invalid=2591, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 21:29:53,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2021-05-21 21:29:53,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4386. [2021-05-21 21:29:53,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4385 states have (on average 3.368757126567845) internal successors, (14772), 4385 states have internal predecessors, (14772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:53,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 14772 transitions. [2021-05-21 21:29:53,226 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 14772 transitions. Word has length 39 [2021-05-21 21:29:53,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:53,227 INFO L482 AbstractCegarLoop]: Abstraction has 4386 states and 14772 transitions. [2021-05-21 21:29:53,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:53,227 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 14772 transitions. [2021-05-21 21:29:53,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:53,232 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:53,232 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:53,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-05-21 21:29:53,232 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:53,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:53,232 INFO L82 PathProgramCache]: Analyzing trace with hash -822111270, now seen corresponding path program 249 times [2021-05-21 21:29:53,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:53,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239420889] [2021-05-21 21:29:53,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:53,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:53,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:53,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239420889] [2021-05-21 21:29:53,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239420889] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:53,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:53,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:53,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275982663] [2021-05-21 21:29:53,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:53,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:53,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:53,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:53,391 INFO L87 Difference]: Start difference. First operand 4386 states and 14772 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:54,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:54,556 INFO L93 Difference]: Finished difference Result 4767 states and 15954 transitions. [2021-05-21 21:29:54,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:29:54,556 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:54,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:54,563 INFO L225 Difference]: With dead ends: 4767 [2021-05-21 21:29:54,564 INFO L226 Difference]: Without dead ends: 4706 [2021-05-21 21:29:54,564 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 724.9ms TimeCoverageRelationStatistics Valid=257, Invalid=2499, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 21:29:54,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2021-05-21 21:29:54,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 4370. [2021-05-21 21:29:54,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4370 states, 4369 states have (on average 3.373311970702678) internal successors, (14738), 4369 states have internal predecessors, (14738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:54,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 14738 transitions. [2021-05-21 21:29:54,642 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 14738 transitions. Word has length 39 [2021-05-21 21:29:54,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:54,642 INFO L482 AbstractCegarLoop]: Abstraction has 4370 states and 14738 transitions. [2021-05-21 21:29:54,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:54,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 14738 transitions. [2021-05-21 21:29:54,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:54,648 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:54,648 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:54,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-05-21 21:29:54,648 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:54,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:54,648 INFO L82 PathProgramCache]: Analyzing trace with hash -920266484, now seen corresponding path program 250 times [2021-05-21 21:29:54,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:54,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784315104] [2021-05-21 21:29:54,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:54,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:54,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:54,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784315104] [2021-05-21 21:29:54,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784315104] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:54,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:54,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:54,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098530667] [2021-05-21 21:29:54,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:54,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:54,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:54,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:54,819 INFO L87 Difference]: Start difference. First operand 4370 states and 14738 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:56,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:56,223 INFO L93 Difference]: Finished difference Result 5001 states and 16511 transitions. [2021-05-21 21:29:56,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-21 21:29:56,223 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:56,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:56,231 INFO L225 Difference]: With dead ends: 5001 [2021-05-21 21:29:56,231 INFO L226 Difference]: Without dead ends: 4946 [2021-05-21 21:29:56,232 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 948.5ms TimeCoverageRelationStatistics Valid=363, Invalid=3419, Unknown=0, NotChecked=0, Total=3782 [2021-05-21 21:29:56,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2021-05-21 21:29:56,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4379. [2021-05-21 21:29:56,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 4378 states have (on average 3.3709456372772957) internal successors, (14758), 4378 states have internal predecessors, (14758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:56,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 14758 transitions. [2021-05-21 21:29:56,300 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 14758 transitions. Word has length 39 [2021-05-21 21:29:56,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:56,301 INFO L482 AbstractCegarLoop]: Abstraction has 4379 states and 14758 transitions. [2021-05-21 21:29:56,301 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:56,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 14758 transitions. [2021-05-21 21:29:56,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:56,306 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:56,306 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:56,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-05-21 21:29:56,306 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:56,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:56,307 INFO L82 PathProgramCache]: Analyzing trace with hash 252385738, now seen corresponding path program 251 times [2021-05-21 21:29:56,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:56,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538585947] [2021-05-21 21:29:56,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:56,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:56,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:56,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538585947] [2021-05-21 21:29:56,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538585947] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:56,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:56,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:56,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607563434] [2021-05-21 21:29:56,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:56,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:56,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:56,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:56,474 INFO L87 Difference]: Start difference. First operand 4379 states and 14758 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:57,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:57,740 INFO L93 Difference]: Finished difference Result 4992 states and 16478 transitions. [2021-05-21 21:29:57,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:29:57,740 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:57,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:57,748 INFO L225 Difference]: With dead ends: 4992 [2021-05-21 21:29:57,748 INFO L226 Difference]: Without dead ends: 4946 [2021-05-21 21:29:57,749 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 834.0ms TimeCoverageRelationStatistics Valid=309, Invalid=2883, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 21:29:57,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2021-05-21 21:29:57,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4385. [2021-05-21 21:29:57,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 4384 states have (on average 3.3697536496350367) internal successors, (14773), 4384 states have internal predecessors, (14773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:57,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 14773 transitions. [2021-05-21 21:29:57,813 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 14773 transitions. Word has length 39 [2021-05-21 21:29:57,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:57,813 INFO L482 AbstractCegarLoop]: Abstraction has 4385 states and 14773 transitions. [2021-05-21 21:29:57,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:57,813 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 14773 transitions. [2021-05-21 21:29:57,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:57,818 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:57,818 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:57,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-05-21 21:29:57,818 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:57,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:57,819 INFO L82 PathProgramCache]: Analyzing trace with hash 4919576, now seen corresponding path program 252 times [2021-05-21 21:29:57,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:57,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144913294] [2021-05-21 21:29:57,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:57,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:57,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144913294] [2021-05-21 21:29:57,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144913294] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:57,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:57,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:57,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047215999] [2021-05-21 21:29:57,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:57,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:57,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:57,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:57,978 INFO L87 Difference]: Start difference. First operand 4385 states and 14773 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:59,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:29:59,277 INFO L93 Difference]: Finished difference Result 4952 states and 16385 transitions. [2021-05-21 21:29:59,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:29:59,277 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:29:59,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:29:59,284 INFO L225 Difference]: With dead ends: 4952 [2021-05-21 21:29:59,285 INFO L226 Difference]: Without dead ends: 4907 [2021-05-21 21:29:59,285 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 856.4ms TimeCoverageRelationStatistics Valid=310, Invalid=2882, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 21:29:59,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2021-05-21 21:29:59,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 4383. [2021-05-21 21:29:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4383 states, 4382 states have (on average 3.3703788224555) internal successors, (14769), 4382 states have internal predecessors, (14769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:59,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4383 states to 4383 states and 14769 transitions. [2021-05-21 21:29:59,348 INFO L78 Accepts]: Start accepts. Automaton has 4383 states and 14769 transitions. Word has length 39 [2021-05-21 21:29:59,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:29:59,348 INFO L482 AbstractCegarLoop]: Abstraction has 4383 states and 14769 transitions. [2021-05-21 21:29:59,348 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:29:59,348 INFO L276 IsEmpty]: Start isEmpty. Operand 4383 states and 14769 transitions. [2021-05-21 21:29:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:29:59,354 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:29:59,354 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:29:59,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-05-21 21:29:59,354 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:29:59,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:29:59,354 INFO L82 PathProgramCache]: Analyzing trace with hash 184640858, now seen corresponding path program 253 times [2021-05-21 21:29:59,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:29:59,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735961061] [2021-05-21 21:29:59,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:29:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:29:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:29:59,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:29:59,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735961061] [2021-05-21 21:29:59,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735961061] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:29:59,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:29:59,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:29:59,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105682286] [2021-05-21 21:29:59,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:29:59,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:29:59,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:29:59,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:29:59,515 INFO L87 Difference]: Start difference. First operand 4383 states and 14769 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:00,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:00,855 INFO L93 Difference]: Finished difference Result 5007 states and 16523 transitions. [2021-05-21 21:30:00,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-21 21:30:00,855 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:00,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:00,864 INFO L225 Difference]: With dead ends: 5007 [2021-05-21 21:30:00,864 INFO L226 Difference]: Without dead ends: 4964 [2021-05-21 21:30:00,864 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 878.8ms TimeCoverageRelationStatistics Valid=322, Invalid=3100, Unknown=0, NotChecked=0, Total=3422 [2021-05-21 21:30:00,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4964 states. [2021-05-21 21:30:00,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4964 to 4392. [2021-05-21 21:30:00,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4391 states have (on average 3.368253245274425) internal successors, (14790), 4391 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:00,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 14790 transitions. [2021-05-21 21:30:00,975 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 14790 transitions. Word has length 39 [2021-05-21 21:30:00,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:00,975 INFO L482 AbstractCegarLoop]: Abstraction has 4392 states and 14790 transitions. [2021-05-21 21:30:00,975 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:00,975 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 14790 transitions. [2021-05-21 21:30:00,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:00,981 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:00,981 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:00,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-05-21 21:30:00,982 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:00,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:00,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1934747994, now seen corresponding path program 254 times [2021-05-21 21:30:00,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:00,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101118174] [2021-05-21 21:30:00,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:01,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:01,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:01,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101118174] [2021-05-21 21:30:01,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101118174] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:01,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:01,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:01,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703843819] [2021-05-21 21:30:01,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:01,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:01,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:01,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:01,156 INFO L87 Difference]: Start difference. First operand 4392 states and 14790 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:02,082 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2021-05-21 21:30:02,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:02,953 INFO L93 Difference]: Finished difference Result 4972 states and 16438 transitions. [2021-05-21 21:30:02,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:30:02,954 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:02,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:02,962 INFO L225 Difference]: With dead ends: 4972 [2021-05-21 21:30:02,962 INFO L226 Difference]: Without dead ends: 4921 [2021-05-21 21:30:02,962 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 1206.0ms TimeCoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 21:30:02,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4921 states. [2021-05-21 21:30:03,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4921 to 4392. [2021-05-21 21:30:03,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4391 states have (on average 3.3675700296060125) internal successors, (14787), 4391 states have internal predecessors, (14787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 14787 transitions. [2021-05-21 21:30:03,026 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 14787 transitions. Word has length 39 [2021-05-21 21:30:03,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:03,026 INFO L482 AbstractCegarLoop]: Abstraction has 4392 states and 14787 transitions. [2021-05-21 21:30:03,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:03,026 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 14787 transitions. [2021-05-21 21:30:03,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:03,031 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:03,031 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:03,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-05-21 21:30:03,031 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:03,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:03,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1743000900, now seen corresponding path program 255 times [2021-05-21 21:30:03,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:03,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367433448] [2021-05-21 21:30:03,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:03,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:03,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367433448] [2021-05-21 21:30:03,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367433448] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:03,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:03,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:03,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325372991] [2021-05-21 21:30:03,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:03,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:03,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:03,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:03,204 INFO L87 Difference]: Start difference. First operand 4392 states and 14787 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:04,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:04,475 INFO L93 Difference]: Finished difference Result 4995 states and 16482 transitions. [2021-05-21 21:30:04,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-21 21:30:04,475 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:04,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:04,483 INFO L225 Difference]: With dead ends: 4995 [2021-05-21 21:30:04,483 INFO L226 Difference]: Without dead ends: 4949 [2021-05-21 21:30:04,484 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 803.2ms TimeCoverageRelationStatistics Valid=281, Invalid=2689, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:30:04,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2021-05-21 21:30:04,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4399. [2021-05-21 21:30:04,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4399 states, 4398 states have (on average 3.3656207366984994) internal successors, (14802), 4398 states have internal predecessors, (14802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:04,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 14802 transitions. [2021-05-21 21:30:04,558 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 14802 transitions. Word has length 39 [2021-05-21 21:30:04,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:04,558 INFO L482 AbstractCegarLoop]: Abstraction has 4399 states and 14802 transitions. [2021-05-21 21:30:04,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:04,558 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 14802 transitions. [2021-05-21 21:30:04,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:04,564 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:04,564 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:04,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-05-21 21:30:04,564 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:04,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:04,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1116898906, now seen corresponding path program 256 times [2021-05-21 21:30:04,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:04,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764985115] [2021-05-21 21:30:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:04,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:04,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764985115] [2021-05-21 21:30:04,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764985115] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:04,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:04,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:04,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998394952] [2021-05-21 21:30:04,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:04,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:04,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:04,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:04,736 INFO L87 Difference]: Start difference. First operand 4399 states and 14802 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:06,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:06,069 INFO L93 Difference]: Finished difference Result 4958 states and 16391 transitions. [2021-05-21 21:30:06,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-21 21:30:06,070 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:06,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:06,079 INFO L225 Difference]: With dead ends: 4958 [2021-05-21 21:30:06,079 INFO L226 Difference]: Without dead ends: 4903 [2021-05-21 21:30:06,079 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 853.4ms TimeCoverageRelationStatistics Valid=287, Invalid=2793, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:30:06,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4903 states. [2021-05-21 21:30:06,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4903 to 4396. [2021-05-21 21:30:06,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4396 states, 4395 states have (on average 3.3665529010238906) internal successors, (14796), 4395 states have internal predecessors, (14796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:06,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 14796 transitions. [2021-05-21 21:30:06,158 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 14796 transitions. Word has length 39 [2021-05-21 21:30:06,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:06,158 INFO L482 AbstractCegarLoop]: Abstraction has 4396 states and 14796 transitions. [2021-05-21 21:30:06,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:06,158 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 14796 transitions. [2021-05-21 21:30:06,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:06,164 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:06,165 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:06,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-05-21 21:30:06,167 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:06,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:06,167 INFO L82 PathProgramCache]: Analyzing trace with hash -165804212, now seen corresponding path program 257 times [2021-05-21 21:30:06,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:06,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280640301] [2021-05-21 21:30:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:06,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:06,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280640301] [2021-05-21 21:30:06,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280640301] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:06,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:06,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:06,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016014928] [2021-05-21 21:30:06,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:06,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:06,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:06,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:06,349 INFO L87 Difference]: Start difference. First operand 4396 states and 14796 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:07,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:07,666 INFO L93 Difference]: Finished difference Result 4942 states and 16351 transitions. [2021-05-21 21:30:07,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:30:07,666 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:07,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:07,675 INFO L225 Difference]: With dead ends: 4942 [2021-05-21 21:30:07,675 INFO L226 Difference]: Without dead ends: 4885 [2021-05-21 21:30:07,675 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 827.3ms TimeCoverageRelationStatistics Valid=295, Invalid=2897, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 21:30:07,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4885 states. [2021-05-21 21:30:07,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4885 to 4384. [2021-05-21 21:30:07,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 4383 states have (on average 3.3696098562628336) internal successors, (14769), 4383 states have internal predecessors, (14769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:07,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 14769 transitions. [2021-05-21 21:30:07,753 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 14769 transitions. Word has length 39 [2021-05-21 21:30:07,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:07,754 INFO L482 AbstractCegarLoop]: Abstraction has 4384 states and 14769 transitions. [2021-05-21 21:30:07,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:07,754 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 14769 transitions. [2021-05-21 21:30:07,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:07,760 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:07,760 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:07,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-05-21 21:30:07,760 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:07,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:07,760 INFO L82 PathProgramCache]: Analyzing trace with hash 574927414, now seen corresponding path program 258 times [2021-05-21 21:30:07,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:07,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271271897] [2021-05-21 21:30:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:08,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:08,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271271897] [2021-05-21 21:30:08,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271271897] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:08,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:08,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:08,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865096516] [2021-05-21 21:30:08,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:08,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:08,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:08,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:08,020 INFO L87 Difference]: Start difference. First operand 4384 states and 14769 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:09,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:09,313 INFO L93 Difference]: Finished difference Result 4869 states and 16186 transitions. [2021-05-21 21:30:09,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-21 21:30:09,313 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:09,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:09,321 INFO L225 Difference]: With dead ends: 4869 [2021-05-21 21:30:09,321 INFO L226 Difference]: Without dead ends: 4826 [2021-05-21 21:30:09,321 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 899.8ms TimeCoverageRelationStatistics Valid=282, Invalid=2688, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:30:09,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2021-05-21 21:30:09,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 4384. [2021-05-21 21:30:09,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 4383 states have (on average 3.3691535477983114) internal successors, (14767), 4383 states have internal predecessors, (14767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:09,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 14767 transitions. [2021-05-21 21:30:09,383 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 14767 transitions. Word has length 39 [2021-05-21 21:30:09,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:09,383 INFO L482 AbstractCegarLoop]: Abstraction has 4384 states and 14767 transitions. [2021-05-21 21:30:09,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:09,383 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 14767 transitions. [2021-05-21 21:30:09,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:09,388 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:09,388 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:09,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-05-21 21:30:09,388 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:09,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:09,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1883282392, now seen corresponding path program 259 times [2021-05-21 21:30:09,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:09,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489443227] [2021-05-21 21:30:09,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:09,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:09,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489443227] [2021-05-21 21:30:09,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489443227] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:09,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:09,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:09,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271786277] [2021-05-21 21:30:09,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:09,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:09,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:09,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:09,547 INFO L87 Difference]: Start difference. First operand 4384 states and 14767 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:10,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:10,837 INFO L93 Difference]: Finished difference Result 4871 states and 16187 transitions. [2021-05-21 21:30:10,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-21 21:30:10,837 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:10,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:10,845 INFO L225 Difference]: With dead ends: 4871 [2021-05-21 21:30:10,845 INFO L226 Difference]: Without dead ends: 4810 [2021-05-21 21:30:10,845 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 789.1ms TimeCoverageRelationStatistics Valid=279, Invalid=2691, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:30:10,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2021-05-21 21:30:10,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4368. [2021-05-21 21:30:10,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4367 states have (on average 3.373940920540417) internal successors, (14734), 4367 states have internal predecessors, (14734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:10,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 14734 transitions. [2021-05-21 21:30:10,910 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 14734 transitions. Word has length 39 [2021-05-21 21:30:10,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:10,910 INFO L482 AbstractCegarLoop]: Abstraction has 4368 states and 14734 transitions. [2021-05-21 21:30:10,910 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 14734 transitions. [2021-05-21 21:30:10,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:10,915 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:10,915 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:10,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-05-21 21:30:10,916 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:10,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:10,916 INFO L82 PathProgramCache]: Analyzing trace with hash 818242360, now seen corresponding path program 260 times [2021-05-21 21:30:10,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:10,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941662628] [2021-05-21 21:30:10,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:11,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:11,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941662628] [2021-05-21 21:30:11,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941662628] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:11,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:11,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:11,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175833665] [2021-05-21 21:30:11,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:11,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:11,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:11,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:11,097 INFO L87 Difference]: Start difference. First operand 4368 states and 14734 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:12,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:12,253 INFO L93 Difference]: Finished difference Result 4723 states and 15822 transitions. [2021-05-21 21:30:12,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 21:30:12,253 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:12,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:12,261 INFO L225 Difference]: With dead ends: 4723 [2021-05-21 21:30:12,262 INFO L226 Difference]: Without dead ends: 4660 [2021-05-21 21:30:12,262 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 672.2ms TimeCoverageRelationStatistics Valid=212, Invalid=1950, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:30:12,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4660 states. [2021-05-21 21:30:12,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4660 to 4400. [2021-05-21 21:30:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4400 states, 4399 states have (on average 3.368492839281655) internal successors, (14818), 4399 states have internal predecessors, (14818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:12,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 14818 transitions. [2021-05-21 21:30:12,336 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 14818 transitions. Word has length 39 [2021-05-21 21:30:12,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:12,336 INFO L482 AbstractCegarLoop]: Abstraction has 4400 states and 14818 transitions. [2021-05-21 21:30:12,336 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:12,336 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 14818 transitions. [2021-05-21 21:30:12,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:12,342 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:12,342 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:12,342 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-05-21 21:30:12,342 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:12,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:12,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1188819320, now seen corresponding path program 261 times [2021-05-21 21:30:12,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:12,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586412384] [2021-05-21 21:30:12,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:12,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:12,536 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:12,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586412384] [2021-05-21 21:30:12,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586412384] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:12,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:12,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:12,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055494722] [2021-05-21 21:30:12,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:12,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:12,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:12,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:12,537 INFO L87 Difference]: Start difference. First operand 4400 states and 14818 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:13,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:13,584 INFO L93 Difference]: Finished difference Result 4747 states and 15882 transitions. [2021-05-21 21:30:13,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 21:30:13,584 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:13,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:13,592 INFO L225 Difference]: With dead ends: 4747 [2021-05-21 21:30:13,592 INFO L226 Difference]: Without dead ends: 4624 [2021-05-21 21:30:13,592 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 646.5ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:30:13,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4624 states. [2021-05-21 21:30:13,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4624 to 4368. [2021-05-21 21:30:13,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4367 states have (on average 3.370277078085642) internal successors, (14718), 4367 states have internal predecessors, (14718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:13,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 14718 transitions. [2021-05-21 21:30:13,668 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 14718 transitions. Word has length 39 [2021-05-21 21:30:13,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:13,668 INFO L482 AbstractCegarLoop]: Abstraction has 4368 states and 14718 transitions. [2021-05-21 21:30:13,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:13,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 14718 transitions. [2021-05-21 21:30:13,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:13,674 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:13,674 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:13,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-05-21 21:30:13,674 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:13,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:13,674 INFO L82 PathProgramCache]: Analyzing trace with hash 686356922, now seen corresponding path program 262 times [2021-05-21 21:30:13,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:13,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980175722] [2021-05-21 21:30:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:13,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:13,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:13,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980175722] [2021-05-21 21:30:13,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980175722] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:13,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:13,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:13,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017747680] [2021-05-21 21:30:13,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:13,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:13,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:13,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:13,842 INFO L87 Difference]: Start difference. First operand 4368 states and 14718 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:14,876 INFO L93 Difference]: Finished difference Result 4707 states and 15768 transitions. [2021-05-21 21:30:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 21:30:14,876 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:14,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:14,883 INFO L225 Difference]: With dead ends: 4707 [2021-05-21 21:30:14,884 INFO L226 Difference]: Without dead ends: 4644 [2021-05-21 21:30:14,884 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 635.6ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:30:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4644 states. [2021-05-21 21:30:14,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4644 to 4368. [2021-05-21 21:30:14,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4367 states have (on average 3.3693611174719487) internal successors, (14714), 4367 states have internal predecessors, (14714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:14,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 14714 transitions. [2021-05-21 21:30:14,946 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 14714 transitions. Word has length 39 [2021-05-21 21:30:14,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:14,946 INFO L482 AbstractCegarLoop]: Abstraction has 4368 states and 14714 transitions. [2021-05-21 21:30:14,946 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:14,946 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 14714 transitions. [2021-05-21 21:30:14,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:14,951 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:14,951 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:14,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-05-21 21:30:14,952 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:14,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:14,952 INFO L82 PathProgramCache]: Analyzing trace with hash 440864824, now seen corresponding path program 263 times [2021-05-21 21:30:14,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:14,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434871442] [2021-05-21 21:30:14,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:15,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:15,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434871442] [2021-05-21 21:30:15,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434871442] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:15,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:15,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:15,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280100863] [2021-05-21 21:30:15,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:15,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:15,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:15,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:15,110 INFO L87 Difference]: Start difference. First operand 4368 states and 14714 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:16,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:16,106 INFO L93 Difference]: Finished difference Result 4724 states and 15794 transitions. [2021-05-21 21:30:16,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 21:30:16,106 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:16,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:16,114 INFO L225 Difference]: With dead ends: 4724 [2021-05-21 21:30:16,114 INFO L226 Difference]: Without dead ends: 4681 [2021-05-21 21:30:16,114 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 606.5ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:30:16,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2021-05-21 21:30:16,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4374. [2021-05-21 21:30:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 4373 states have (on average 3.367710953578779) internal successors, (14727), 4373 states have internal predecessors, (14727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:16,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 14727 transitions. [2021-05-21 21:30:16,186 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 14727 transitions. Word has length 39 [2021-05-21 21:30:16,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:16,187 INFO L482 AbstractCegarLoop]: Abstraction has 4374 states and 14727 transitions. [2021-05-21 21:30:16,187 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:16,187 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 14727 transitions. [2021-05-21 21:30:16,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:16,193 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:16,193 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:16,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-05-21 21:30:16,193 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:16,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:16,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1270395994, now seen corresponding path program 264 times [2021-05-21 21:30:16,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:16,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935016208] [2021-05-21 21:30:16,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:16,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:16,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935016208] [2021-05-21 21:30:16,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935016208] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:16,368 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:16,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:16,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322911148] [2021-05-21 21:30:16,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:16,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:16,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:16,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:16,369 INFO L87 Difference]: Start difference. First operand 4374 states and 14727 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:17,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:17,359 INFO L93 Difference]: Finished difference Result 4679 states and 15690 transitions. [2021-05-21 21:30:17,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 21:30:17,359 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:17,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:17,368 INFO L225 Difference]: With dead ends: 4679 [2021-05-21 21:30:17,368 INFO L226 Difference]: Without dead ends: 4616 [2021-05-21 21:30:17,368 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 588.4ms TimeCoverageRelationStatistics Valid=198, Invalid=1872, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:30:17,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4616 states. [2021-05-21 21:30:17,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4616 to 4356. [2021-05-21 21:30:17,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4356 states, 4355 states have (on average 3.371756601607348) internal successors, (14684), 4355 states have internal predecessors, (14684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:17,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4356 states to 4356 states and 14684 transitions. [2021-05-21 21:30:17,442 INFO L78 Accepts]: Start accepts. Automaton has 4356 states and 14684 transitions. Word has length 39 [2021-05-21 21:30:17,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:17,442 INFO L482 AbstractCegarLoop]: Abstraction has 4356 states and 14684 transitions. [2021-05-21 21:30:17,442 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:17,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4356 states and 14684 transitions. [2021-05-21 21:30:17,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:17,448 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:17,448 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:17,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-05-21 21:30:17,448 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:17,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:17,448 INFO L82 PathProgramCache]: Analyzing trace with hash -742839814, now seen corresponding path program 265 times [2021-05-21 21:30:17,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:17,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826220640] [2021-05-21 21:30:17,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:17,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:17,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:17,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826220640] [2021-05-21 21:30:17,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826220640] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:17,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:17,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:17,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502844852] [2021-05-21 21:30:17,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:17,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:17,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:17,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:17,613 INFO L87 Difference]: Start difference. First operand 4356 states and 14684 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:18,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:18,693 INFO L93 Difference]: Finished difference Result 4742 states and 15847 transitions. [2021-05-21 21:30:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:30:18,693 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:18,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:18,702 INFO L225 Difference]: With dead ends: 4742 [2021-05-21 21:30:18,702 INFO L226 Difference]: Without dead ends: 4687 [2021-05-21 21:30:18,702 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 683.7ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:30:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2021-05-21 21:30:18,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 4362. [2021-05-21 21:30:18,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4362 states, 4361 states have (on average 3.370098601238248) internal successors, (14697), 4361 states have internal predecessors, (14697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:18,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4362 states to 4362 states and 14697 transitions. [2021-05-21 21:30:18,791 INFO L78 Accepts]: Start accepts. Automaton has 4362 states and 14697 transitions. Word has length 39 [2021-05-21 21:30:18,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:18,791 INFO L482 AbstractCegarLoop]: Abstraction has 4362 states and 14697 transitions. [2021-05-21 21:30:18,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:18,791 INFO L276 IsEmpty]: Start isEmpty. Operand 4362 states and 14697 transitions. [2021-05-21 21:30:18,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:18,797 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:18,797 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:18,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-05-21 21:30:18,797 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:18,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:18,798 INFO L82 PathProgramCache]: Analyzing trace with hash 594218200, now seen corresponding path program 266 times [2021-05-21 21:30:18,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:18,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704522434] [2021-05-21 21:30:18,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:18,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:18,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704522434] [2021-05-21 21:30:18,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704522434] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:18,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:18,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:18,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694636673] [2021-05-21 21:30:18,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:18,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:18,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:18,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:18,968 INFO L87 Difference]: Start difference. First operand 4362 states and 14697 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:19,986 INFO L93 Difference]: Finished difference Result 4718 states and 15777 transitions. [2021-05-21 21:30:19,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:30:19,987 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:19,994 INFO L225 Difference]: With dead ends: 4718 [2021-05-21 21:30:19,994 INFO L226 Difference]: Without dead ends: 4675 [2021-05-21 21:30:19,995 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 639.6ms TimeCoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 21:30:20,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2021-05-21 21:30:20,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4368. [2021-05-21 21:30:20,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4367 states have (on average 3.368445156858255) internal successors, (14710), 4367 states have internal predecessors, (14710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:20,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 14710 transitions. [2021-05-21 21:30:20,066 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 14710 transitions. Word has length 39 [2021-05-21 21:30:20,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:20,066 INFO L482 AbstractCegarLoop]: Abstraction has 4368 states and 14710 transitions. [2021-05-21 21:30:20,066 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:20,066 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 14710 transitions. [2021-05-21 21:30:20,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:20,072 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:20,072 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:20,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-05-21 21:30:20,072 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:20,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:20,072 INFO L82 PathProgramCache]: Analyzing trace with hash 322798650, now seen corresponding path program 267 times [2021-05-21 21:30:20,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:20,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83613304] [2021-05-21 21:30:20,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:20,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:20,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:20,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83613304] [2021-05-21 21:30:20,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83613304] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:20,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:20,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:20,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067481168] [2021-05-21 21:30:20,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:20,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:20,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:20,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:20,232 INFO L87 Difference]: Start difference. First operand 4368 states and 14710 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:21,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:21,278 INFO L93 Difference]: Finished difference Result 4673 states and 15673 transitions. [2021-05-21 21:30:21,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 21:30:21,278 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:21,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:21,286 INFO L225 Difference]: With dead ends: 4673 [2021-05-21 21:30:21,286 INFO L226 Difference]: Without dead ends: 4612 [2021-05-21 21:30:21,286 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 651.7ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:30:21,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4612 states. [2021-05-21 21:30:21,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4612 to 4352. [2021-05-21 21:30:21,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4352 states, 4351 states have (on average 3.3725580326361757) internal successors, (14674), 4351 states have internal predecessors, (14674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:21,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 14674 transitions. [2021-05-21 21:30:21,353 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 14674 transitions. Word has length 39 [2021-05-21 21:30:21,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:21,353 INFO L482 AbstractCegarLoop]: Abstraction has 4352 states and 14674 transitions. [2021-05-21 21:30:21,353 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:21,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 14674 transitions. [2021-05-21 21:30:21,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:21,358 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:21,358 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:21,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-05-21 21:30:21,359 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:21,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:21,359 INFO L82 PathProgramCache]: Analyzing trace with hash -918380712, now seen corresponding path program 268 times [2021-05-21 21:30:21,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:21,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138055664] [2021-05-21 21:30:21,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:21,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:21,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:21,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138055664] [2021-05-21 21:30:21,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138055664] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:21,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:21,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:21,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504505159] [2021-05-21 21:30:21,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:21,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:21,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:21,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:21,528 INFO L87 Difference]: Start difference. First operand 4352 states and 14674 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:22,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:22,581 INFO L93 Difference]: Finished difference Result 4727 states and 15830 transitions. [2021-05-21 21:30:22,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 21:30:22,581 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:22,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:22,589 INFO L225 Difference]: With dead ends: 4727 [2021-05-21 21:30:22,589 INFO L226 Difference]: Without dead ends: 4636 [2021-05-21 21:30:22,589 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 649.7ms TimeCoverageRelationStatistics Valid=228, Invalid=2124, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 21:30:22,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4636 states. [2021-05-21 21:30:22,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4636 to 4358. [2021-05-21 21:30:22,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4358 states, 4357 states have (on average 3.3713564379159973) internal successors, (14689), 4357 states have internal predecessors, (14689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:22,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4358 states to 4358 states and 14689 transitions. [2021-05-21 21:30:22,656 INFO L78 Accepts]: Start accepts. Automaton has 4358 states and 14689 transitions. Word has length 39 [2021-05-21 21:30:22,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:22,656 INFO L482 AbstractCegarLoop]: Abstraction has 4358 states and 14689 transitions. [2021-05-21 21:30:22,656 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:22,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 14689 transitions. [2021-05-21 21:30:22,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:22,661 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:22,661 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:22,661 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-05-21 21:30:22,661 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:22,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:22,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1123937882, now seen corresponding path program 269 times [2021-05-21 21:30:22,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:22,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705974564] [2021-05-21 21:30:22,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:22,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:22,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:22,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705974564] [2021-05-21 21:30:22,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705974564] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:22,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:22,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:22,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680771471] [2021-05-21 21:30:22,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:22,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:22,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:22,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:22,842 INFO L87 Difference]: Start difference. First operand 4358 states and 14689 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:23,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:23,954 INFO L93 Difference]: Finished difference Result 4758 states and 15877 transitions. [2021-05-21 21:30:23,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 21:30:23,954 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:23,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:23,962 INFO L225 Difference]: With dead ends: 4758 [2021-05-21 21:30:23,962 INFO L226 Difference]: Without dead ends: 4703 [2021-05-21 21:30:23,962 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 701.9ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:30:23,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4703 states. [2021-05-21 21:30:24,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4703 to 4376. [2021-05-21 21:30:24,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 3.365942857142857) internal successors, (14726), 4375 states have internal predecessors, (14726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:24,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 14726 transitions. [2021-05-21 21:30:24,028 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 14726 transitions. Word has length 39 [2021-05-21 21:30:24,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:24,028 INFO L482 AbstractCegarLoop]: Abstraction has 4376 states and 14726 transitions. [2021-05-21 21:30:24,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:24,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 14726 transitions. [2021-05-21 21:30:24,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:24,033 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:24,033 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:24,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-05-21 21:30:24,034 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:24,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:24,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1833971400, now seen corresponding path program 270 times [2021-05-21 21:30:24,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:24,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538564153] [2021-05-21 21:30:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:24,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:24,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:24,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538564153] [2021-05-21 21:30:24,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538564153] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:24,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:24,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:24,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173678331] [2021-05-21 21:30:24,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:24,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:24,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:24,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:24,195 INFO L87 Difference]: Start difference. First operand 4376 states and 14726 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:25,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:25,305 INFO L93 Difference]: Finished difference Result 4734 states and 15807 transitions. [2021-05-21 21:30:25,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 21:30:25,305 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:25,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:25,313 INFO L225 Difference]: With dead ends: 4734 [2021-05-21 21:30:25,313 INFO L226 Difference]: Without dead ends: 4691 [2021-05-21 21:30:25,313 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 693.9ms TimeCoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 21:30:25,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2021-05-21 21:30:25,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 4382. [2021-05-21 21:30:25,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 3.3643003880392603) internal successors, (14739), 4381 states have internal predecessors, (14739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 14739 transitions. [2021-05-21 21:30:25,374 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 14739 transitions. Word has length 39 [2021-05-21 21:30:25,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:25,374 INFO L482 AbstractCegarLoop]: Abstraction has 4382 states and 14739 transitions. [2021-05-21 21:30:25,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:25,374 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 14739 transitions. [2021-05-21 21:30:25,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:25,379 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:25,379 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:25,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-05-21 21:30:25,379 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:25,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:25,379 INFO L82 PathProgramCache]: Analyzing trace with hash -2105390950, now seen corresponding path program 271 times [2021-05-21 21:30:25,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:25,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716007047] [2021-05-21 21:30:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:25,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:25,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:25,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716007047] [2021-05-21 21:30:25,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716007047] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:25,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:25,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:25,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673578707] [2021-05-21 21:30:25,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:25,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:25,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:25,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:25,539 INFO L87 Difference]: Start difference. First operand 4382 states and 14739 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:26,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:26,653 INFO L93 Difference]: Finished difference Result 4689 states and 15703 transitions. [2021-05-21 21:30:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 21:30:26,653 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:26,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:26,661 INFO L225 Difference]: With dead ends: 4689 [2021-05-21 21:30:26,661 INFO L226 Difference]: Without dead ends: 4598 [2021-05-21 21:30:26,661 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 693.5ms TimeCoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 21:30:26,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4598 states. [2021-05-21 21:30:26,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4598 to 4336. [2021-05-21 21:30:26,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4336 states, 4335 states have (on average 3.3753171856978086) internal successors, (14632), 4335 states have internal predecessors, (14632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4336 states to 4336 states and 14632 transitions. [2021-05-21 21:30:26,729 INFO L78 Accepts]: Start accepts. Automaton has 4336 states and 14632 transitions. Word has length 39 [2021-05-21 21:30:26,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:26,729 INFO L482 AbstractCegarLoop]: Abstraction has 4336 states and 14632 transitions. [2021-05-21 21:30:26,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:26,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4336 states and 14632 transitions. [2021-05-21 21:30:26,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:26,734 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:26,734 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:26,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-05-21 21:30:26,735 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:26,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:26,735 INFO L82 PathProgramCache]: Analyzing trace with hash 563047592, now seen corresponding path program 272 times [2021-05-21 21:30:26,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:26,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271276135] [2021-05-21 21:30:26,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:26,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:26,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271276135] [2021-05-21 21:30:26,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271276135] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:26,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:26,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:26,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144476598] [2021-05-21 21:30:26,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:26,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:26,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:26,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:26,914 INFO L87 Difference]: Start difference. First operand 4336 states and 14632 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:28,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:28,689 INFO L93 Difference]: Finished difference Result 6700 states and 22296 transitions. [2021-05-21 21:30:28,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-21 21:30:28,689 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:28,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:28,700 INFO L225 Difference]: With dead ends: 6700 [2021-05-21 21:30:28,700 INFO L226 Difference]: Without dead ends: 6645 [2021-05-21 21:30:28,701 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1395 ImplicationChecksByTransitivity, 1084.1ms TimeCoverageRelationStatistics Valid=433, Invalid=4537, Unknown=0, NotChecked=0, Total=4970 [2021-05-21 21:30:28,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6645 states. [2021-05-21 21:30:28,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6645 to 4355. [2021-05-21 21:30:28,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4354 states have (on average 3.3759761139182363) internal successors, (14699), 4354 states have internal predecessors, (14699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 14699 transitions. [2021-05-21 21:30:28,776 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 14699 transitions. Word has length 39 [2021-05-21 21:30:28,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:28,776 INFO L482 AbstractCegarLoop]: Abstraction has 4355 states and 14699 transitions. [2021-05-21 21:30:28,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 14699 transitions. [2021-05-21 21:30:28,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:28,782 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:28,782 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:28,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-05-21 21:30:28,782 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:28,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:28,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1735699814, now seen corresponding path program 273 times [2021-05-21 21:30:28,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:28,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418106675] [2021-05-21 21:30:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:28,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:28,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418106675] [2021-05-21 21:30:28,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418106675] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:28,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:28,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:28,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724483493] [2021-05-21 21:30:28,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:28,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:28,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:28,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:28,941 INFO L87 Difference]: Start difference. First operand 4355 states and 14699 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:30,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:30,969 INFO L93 Difference]: Finished difference Result 7470 states and 24893 transitions. [2021-05-21 21:30:30,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-21 21:30:30,969 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:30,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:30,982 INFO L225 Difference]: With dead ends: 7470 [2021-05-21 21:30:30,982 INFO L226 Difference]: Without dead ends: 7347 [2021-05-21 21:30:30,982 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 1182.9ms TimeCoverageRelationStatistics Valid=480, Invalid=5372, Unknown=0, NotChecked=0, Total=5852 [2021-05-21 21:30:31,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7347 states. [2021-05-21 21:30:31,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7347 to 4359. [2021-05-21 21:30:31,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 3.3765488756310233) internal successors, (14715), 4358 states have internal predecessors, (14715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:31,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 14715 transitions. [2021-05-21 21:30:31,068 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 14715 transitions. Word has length 39 [2021-05-21 21:30:31,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:31,068 INFO L482 AbstractCegarLoop]: Abstraction has 4359 states and 14715 transitions. [2021-05-21 21:30:31,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:31,068 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 14715 transitions. [2021-05-21 21:30:31,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:31,074 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:31,074 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:31,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-05-21 21:30:31,074 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:31,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:31,074 INFO L82 PathProgramCache]: Analyzing trace with hash 758773620, now seen corresponding path program 274 times [2021-05-21 21:30:31,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:31,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603479626] [2021-05-21 21:30:31,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:31,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:31,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603479626] [2021-05-21 21:30:31,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603479626] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:31,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:31,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:31,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136349980] [2021-05-21 21:30:31,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:31,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:31,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:31,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:31,234 INFO L87 Difference]: Start difference. First operand 4359 states and 14715 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:32,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:32,861 INFO L93 Difference]: Finished difference Result 6599 states and 22019 transitions. [2021-05-21 21:30:32,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-21 21:30:32,861 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:32,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:32,873 INFO L225 Difference]: With dead ends: 6599 [2021-05-21 21:30:32,873 INFO L226 Difference]: Without dead ends: 6508 [2021-05-21 21:30:32,874 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 935.3ms TimeCoverageRelationStatistics Valid=374, Invalid=3916, Unknown=0, NotChecked=0, Total=4290 [2021-05-21 21:30:32,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-05-21 21:30:32,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 4365. [2021-05-21 21:30:32,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4365 states, 4364 states have (on average 3.3739688359303392) internal successors, (14724), 4364 states have internal predecessors, (14724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:32,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 14724 transitions. [2021-05-21 21:30:32,959 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 14724 transitions. Word has length 39 [2021-05-21 21:30:32,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:32,959 INFO L482 AbstractCegarLoop]: Abstraction has 4365 states and 14724 transitions. [2021-05-21 21:30:32,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:32,959 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 14724 transitions. [2021-05-21 21:30:32,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:32,965 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:32,965 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:32,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-05-21 21:30:32,965 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:32,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:32,965 INFO L82 PathProgramCache]: Analyzing trace with hash -743708586, now seen corresponding path program 275 times [2021-05-21 21:30:32,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:32,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314141222] [2021-05-21 21:30:32,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:33,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:33,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314141222] [2021-05-21 21:30:33,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314141222] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:33,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:33,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:33,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771861889] [2021-05-21 21:30:33,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:33,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:33,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:33,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:33,124 INFO L87 Difference]: Start difference. First operand 4365 states and 14724 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:35,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:35,011 INFO L93 Difference]: Finished difference Result 7458 states and 24916 transitions. [2021-05-21 21:30:35,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-21 21:30:35,011 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:35,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:35,024 INFO L225 Difference]: With dead ends: 7458 [2021-05-21 21:30:35,024 INFO L226 Difference]: Without dead ends: 7358 [2021-05-21 21:30:35,025 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 1046.9ms TimeCoverageRelationStatistics Valid=409, Invalid=4561, Unknown=0, NotChecked=0, Total=4970 [2021-05-21 21:30:35,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7358 states. [2021-05-21 21:30:35,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7358 to 4353. [2021-05-21 21:30:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 3.374080882352941) internal successors, (14684), 4352 states have internal predecessors, (14684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:35,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 14684 transitions. [2021-05-21 21:30:35,112 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 14684 transitions. Word has length 39 [2021-05-21 21:30:35,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:35,113 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 14684 transitions. [2021-05-21 21:30:35,113 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 14684 transitions. [2021-05-21 21:30:35,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:35,118 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:35,118 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:35,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-05-21 21:30:35,118 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:35,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:35,119 INFO L82 PathProgramCache]: Analyzing trace with hash 431162154, now seen corresponding path program 276 times [2021-05-21 21:30:35,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:35,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996974135] [2021-05-21 21:30:35,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:35,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:35,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:35,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996974135] [2021-05-21 21:30:35,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996974135] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:35,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:35,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:35,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047398180] [2021-05-21 21:30:35,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:35,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:35,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:35,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:35,288 INFO L87 Difference]: Start difference. First operand 4353 states and 14684 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:37,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:37,083 INFO L93 Difference]: Finished difference Result 4944 states and 16360 transitions. [2021-05-21 21:30:37,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-21 21:30:37,083 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:37,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:37,092 INFO L225 Difference]: With dead ends: 4944 [2021-05-21 21:30:37,092 INFO L226 Difference]: Without dead ends: 4889 [2021-05-21 21:30:37,093 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 1232.8ms TimeCoverageRelationStatistics Valid=414, Invalid=4278, Unknown=0, NotChecked=0, Total=4692 [2021-05-21 21:30:37,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4889 states. [2021-05-21 21:30:37,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4889 to 4379. [2021-05-21 21:30:37,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 4378 states have (on average 3.366605756052992) internal successors, (14739), 4378 states have internal predecessors, (14739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:37,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 14739 transitions. [2021-05-21 21:30:37,166 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 14739 transitions. Word has length 39 [2021-05-21 21:30:37,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:37,166 INFO L482 AbstractCegarLoop]: Abstraction has 4379 states and 14739 transitions. [2021-05-21 21:30:37,166 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:37,166 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 14739 transitions. [2021-05-21 21:30:37,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:37,172 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:37,172 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:37,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-05-21 21:30:37,172 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:37,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:37,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1603814376, now seen corresponding path program 277 times [2021-05-21 21:30:37,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:37,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785312779] [2021-05-21 21:30:37,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:37,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:37,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785312779] [2021-05-21 21:30:37,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785312779] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:37,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:37,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:37,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771862183] [2021-05-21 21:30:37,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:37,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:37,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:37,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:37,349 INFO L87 Difference]: Start difference. First operand 4379 states and 14739 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:38,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:38,957 INFO L93 Difference]: Finished difference Result 4896 states and 16242 transitions. [2021-05-21 21:30:38,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-21 21:30:38,957 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:38,964 INFO L225 Difference]: With dead ends: 4896 [2021-05-21 21:30:38,965 INFO L226 Difference]: Without dead ends: 4836 [2021-05-21 21:30:38,965 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1093 ImplicationChecksByTransitivity, 1099.0ms TimeCoverageRelationStatistics Valid=385, Invalid=3775, Unknown=0, NotChecked=0, Total=4160 [2021-05-21 21:30:38,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4836 states. [2021-05-21 21:30:39,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4836 to 4385. [2021-05-21 21:30:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 4384 states have (on average 3.365647810218978) internal successors, (14755), 4384 states have internal predecessors, (14755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 14755 transitions. [2021-05-21 21:30:39,028 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 14755 transitions. Word has length 39 [2021-05-21 21:30:39,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:39,028 INFO L482 AbstractCegarLoop]: Abstraction has 4385 states and 14755 transitions. [2021-05-21 21:30:39,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:39,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 14755 transitions. [2021-05-21 21:30:39,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:39,033 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:39,033 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:39,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-05-21 21:30:39,033 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:39,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:39,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1536069496, now seen corresponding path program 278 times [2021-05-21 21:30:39,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:39,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756309301] [2021-05-21 21:30:39,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:39,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:39,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:39,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756309301] [2021-05-21 21:30:39,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756309301] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:39,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:39,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:39,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261822910] [2021-05-21 21:30:39,193 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:39,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:39,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:39,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:39,194 INFO L87 Difference]: Start difference. First operand 4385 states and 14755 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:40,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:40,695 INFO L93 Difference]: Finished difference Result 4849 states and 16104 transitions. [2021-05-21 21:30:40,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-21 21:30:40,695 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:40,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:40,703 INFO L225 Difference]: With dead ends: 4849 [2021-05-21 21:30:40,703 INFO L226 Difference]: Without dead ends: 4806 [2021-05-21 21:30:40,703 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 984.8ms TimeCoverageRelationStatistics Valid=346, Invalid=3560, Unknown=0, NotChecked=0, Total=3906 [2021-05-21 21:30:40,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4806 states. [2021-05-21 21:30:40,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4806 to 4391. [2021-05-21 21:30:40,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 4390 states have (on average 3.364009111617312) internal successors, (14768), 4390 states have internal predecessors, (14768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:40,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 14768 transitions. [2021-05-21 21:30:40,769 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 14768 transitions. Word has length 39 [2021-05-21 21:30:40,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:40,769 INFO L482 AbstractCegarLoop]: Abstraction has 4391 states and 14768 transitions. [2021-05-21 21:30:40,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:40,769 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 14768 transitions. [2021-05-21 21:30:40,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:40,774 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:40,774 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:40,775 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-05-21 21:30:40,775 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:40,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:40,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1008790664, now seen corresponding path program 279 times [2021-05-21 21:30:40,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:40,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045844498] [2021-05-21 21:30:40,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:40,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:40,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045844498] [2021-05-21 21:30:40,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045844498] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:40,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:40,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:40,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607398035] [2021-05-21 21:30:40,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:40,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:40,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:40,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:40,933 INFO L87 Difference]: Start difference. First operand 4391 states and 14768 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:42,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:42,333 INFO L93 Difference]: Finished difference Result 4852 states and 16125 transitions. [2021-05-21 21:30:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-21 21:30:42,333 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:42,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:42,341 INFO L225 Difference]: With dead ends: 4852 [2021-05-21 21:30:42,341 INFO L226 Difference]: Without dead ends: 4801 [2021-05-21 21:30:42,342 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 896.1ms TimeCoverageRelationStatistics Valid=331, Invalid=3329, Unknown=0, NotChecked=0, Total=3660 [2021-05-21 21:30:42,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2021-05-21 21:30:42,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4391. [2021-05-21 21:30:42,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 4390 states have (on average 3.3633257403189067) internal successors, (14765), 4390 states have internal predecessors, (14765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:42,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 14765 transitions. [2021-05-21 21:30:42,409 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 14765 transitions. Word has length 39 [2021-05-21 21:30:42,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:42,409 INFO L482 AbstractCegarLoop]: Abstraction has 4391 states and 14765 transitions. [2021-05-21 21:30:42,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:42,410 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 14765 transitions. [2021-05-21 21:30:42,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:42,415 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:42,415 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:42,415 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-05-21 21:30:42,415 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:42,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:42,415 INFO L82 PathProgramCache]: Analyzing trace with hash -391572262, now seen corresponding path program 280 times [2021-05-21 21:30:42,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:42,415 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396111481] [2021-05-21 21:30:42,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:42,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:42,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396111481] [2021-05-21 21:30:42,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396111481] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:42,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:42,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:42,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608803760] [2021-05-21 21:30:42,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:42,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:42,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:42,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:42,598 INFO L87 Difference]: Start difference. First operand 4391 states and 14765 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:44,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:44,049 INFO L93 Difference]: Finished difference Result 4845 states and 16081 transitions. [2021-05-21 21:30:44,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-21 21:30:44,049 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:44,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:44,057 INFO L225 Difference]: With dead ends: 4845 [2021-05-21 21:30:44,057 INFO L226 Difference]: Without dead ends: 4799 [2021-05-21 21:30:44,058 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 956.2ms TimeCoverageRelationStatistics Valid=335, Invalid=3325, Unknown=0, NotChecked=0, Total=3660 [2021-05-21 21:30:44,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2021-05-21 21:30:44,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 4398. [2021-05-21 21:30:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4398 states, 4397 states have (on average 3.361382760973391) internal successors, (14780), 4397 states have internal predecessors, (14780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:44,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4398 states to 4398 states and 14780 transitions. [2021-05-21 21:30:44,130 INFO L78 Accepts]: Start accepts. Automaton has 4398 states and 14780 transitions. Word has length 39 [2021-05-21 21:30:44,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:44,130 INFO L482 AbstractCegarLoop]: Abstraction has 4398 states and 14780 transitions. [2021-05-21 21:30:44,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:44,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4398 states and 14780 transitions. [2021-05-21 21:30:44,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:44,135 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:44,135 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:44,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-05-21 21:30:44,135 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:44,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:44,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1826639752, now seen corresponding path program 281 times [2021-05-21 21:30:44,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:44,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822070851] [2021-05-21 21:30:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:44,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:44,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822070851] [2021-05-21 21:30:44,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822070851] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:44,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:44,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:44,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325831562] [2021-05-21 21:30:44,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:44,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:44,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:44,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:44,297 INFO L87 Difference]: Start difference. First operand 4398 states and 14780 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:45,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:45,698 INFO L93 Difference]: Finished difference Result 4838 states and 16078 transitions. [2021-05-21 21:30:45,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-21 21:30:45,698 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:45,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:45,707 INFO L225 Difference]: With dead ends: 4838 [2021-05-21 21:30:45,707 INFO L226 Difference]: Without dead ends: 4783 [2021-05-21 21:30:45,707 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 907.7ms TimeCoverageRelationStatistics Valid=331, Invalid=3329, Unknown=0, NotChecked=0, Total=3660 [2021-05-21 21:30:45,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2021-05-21 21:30:45,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4395. [2021-05-21 21:30:45,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4395 states, 4394 states have (on average 3.3623122439690487) internal successors, (14774), 4394 states have internal predecessors, (14774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:45,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 14774 transitions. [2021-05-21 21:30:45,778 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 14774 transitions. Word has length 39 [2021-05-21 21:30:45,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:45,778 INFO L482 AbstractCegarLoop]: Abstraction has 4395 states and 14774 transitions. [2021-05-21 21:30:45,778 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:45,779 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 14774 transitions. [2021-05-21 21:30:45,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:45,784 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:45,784 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:45,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-05-21 21:30:45,784 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:45,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:45,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1185624426, now seen corresponding path program 282 times [2021-05-21 21:30:45,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:45,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881453184] [2021-05-21 21:30:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:45,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:45,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:45,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881453184] [2021-05-21 21:30:45,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881453184] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:45,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:45,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:45,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38170460] [2021-05-21 21:30:45,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:45,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:45,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:45,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:45,954 INFO L87 Difference]: Start difference. First operand 4395 states and 14774 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:47,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:47,423 INFO L93 Difference]: Finished difference Result 4891 states and 16194 transitions. [2021-05-21 21:30:47,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-21 21:30:47,423 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:47,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:47,430 INFO L225 Difference]: With dead ends: 4891 [2021-05-21 21:30:47,431 INFO L226 Difference]: Without dead ends: 4834 [2021-05-21 21:30:47,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 962.8ms TimeCoverageRelationStatistics Valid=344, Invalid=3562, Unknown=0, NotChecked=0, Total=3906 [2021-05-21 21:30:47,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2021-05-21 21:30:47,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4395. [2021-05-21 21:30:47,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4395 states, 4394 states have (on average 3.362084660901229) internal successors, (14773), 4394 states have internal predecessors, (14773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:47,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 14773 transitions. [2021-05-21 21:30:47,489 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 14773 transitions. Word has length 39 [2021-05-21 21:30:47,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:47,489 INFO L482 AbstractCegarLoop]: Abstraction has 4395 states and 14773 transitions. [2021-05-21 21:30:47,489 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:47,489 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 14773 transitions. [2021-05-21 21:30:47,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:47,494 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:47,494 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:47,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-05-21 21:30:47,494 INFO L430 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:47,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:47,494 INFO L82 PathProgramCache]: Analyzing trace with hash -531853754, now seen corresponding path program 283 times [2021-05-21 21:30:47,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:47,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734539143] [2021-05-21 21:30:47,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:47,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:47,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:47,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734539143] [2021-05-21 21:30:47,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734539143] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:47,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:47,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:47,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312357789] [2021-05-21 21:30:47,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:47,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:47,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:47,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:47,651 INFO L87 Difference]: Start difference. First operand 4395 states and 14773 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:49,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:49,123 INFO L93 Difference]: Finished difference Result 4892 states and 16195 transitions. [2021-05-21 21:30:49,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-21 21:30:49,124 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:49,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:49,131 INFO L225 Difference]: With dead ends: 4892 [2021-05-21 21:30:49,131 INFO L226 Difference]: Without dead ends: 4833 [2021-05-21 21:30:49,131 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 978.5ms TimeCoverageRelationStatistics Valid=346, Invalid=3560, Unknown=0, NotChecked=0, Total=3906 [2021-05-21 21:30:49,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4833 states. [2021-05-21 21:30:49,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4833 to 4394. [2021-05-21 21:30:49,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4394 states, 4393 states have (on average 3.362394718870931) internal successors, (14771), 4393 states have internal predecessors, (14771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:49,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4394 states to 4394 states and 14771 transitions. [2021-05-21 21:30:49,190 INFO L78 Accepts]: Start accepts. Automaton has 4394 states and 14771 transitions. Word has length 39 [2021-05-21 21:30:49,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:49,190 INFO L482 AbstractCegarLoop]: Abstraction has 4394 states and 14771 transitions. [2021-05-21 21:30:49,190 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:49,190 INFO L276 IsEmpty]: Start isEmpty. Operand 4394 states and 14771 transitions. [2021-05-21 21:30:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:49,195 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:49,196 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:49,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-05-21 21:30:49,196 INFO L430 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:49,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:49,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1770586282, now seen corresponding path program 284 times [2021-05-21 21:30:49,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:49,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540982561] [2021-05-21 21:30:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:49,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:49,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:49,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540982561] [2021-05-21 21:30:49,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540982561] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:49,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:49,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:49,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312981030] [2021-05-21 21:30:49,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:49,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:49,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:49,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:49,354 INFO L87 Difference]: Start difference. First operand 4394 states and 14771 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:50,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:50,542 INFO L93 Difference]: Finished difference Result 4793 states and 15944 transitions. [2021-05-21 21:30:50,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-21 21:30:50,543 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:50,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:50,550 INFO L225 Difference]: With dead ends: 4793 [2021-05-21 21:30:50,550 INFO L226 Difference]: Without dead ends: 4718 [2021-05-21 21:30:50,551 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 747.2ms TimeCoverageRelationStatistics Valid=281, Invalid=2799, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:30:50,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4718 states. [2021-05-21 21:30:50,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4718 to 4380. [2021-05-21 21:30:50,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4380 states, 4379 states have (on average 3.3649234985156427) internal successors, (14735), 4379 states have internal predecessors, (14735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:50,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 14735 transitions. [2021-05-21 21:30:50,613 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 14735 transitions. Word has length 39 [2021-05-21 21:30:50,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:50,613 INFO L482 AbstractCegarLoop]: Abstraction has 4380 states and 14735 transitions. [2021-05-21 21:30:50,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:50,613 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 14735 transitions. [2021-05-21 21:30:50,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:50,618 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:50,618 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:50,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-05-21 21:30:50,618 INFO L430 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:50,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:50,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1606839466, now seen corresponding path program 285 times [2021-05-21 21:30:50,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:50,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929257394] [2021-05-21 21:30:50,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:50,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:50,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:50,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929257394] [2021-05-21 21:30:50,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929257394] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:50,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:50,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:30:50,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563447768] [2021-05-21 21:30:50,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:30:50,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:50,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:30:50,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:30:50,779 INFO L87 Difference]: Start difference. First operand 4380 states and 14735 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:52,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:52,017 INFO L93 Difference]: Finished difference Result 4694 states and 15714 transitions. [2021-05-21 21:30:52,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:30:52,019 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:52,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:52,027 INFO L225 Difference]: With dead ends: 4694 [2021-05-21 21:30:52,027 INFO L226 Difference]: Without dead ends: 4607 [2021-05-21 21:30:52,027 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 765.8ms TimeCoverageRelationStatistics Valid=279, Invalid=2691, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:30:52,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4607 states. [2021-05-21 21:30:52,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4607 to 4338. [2021-05-21 21:30:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4337 states have (on average 3.3760664053493197) internal successors, (14642), 4337 states have internal predecessors, (14642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:52,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 14642 transitions. [2021-05-21 21:30:52,092 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 14642 transitions. Word has length 39 [2021-05-21 21:30:52,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:52,092 INFO L482 AbstractCegarLoop]: Abstraction has 4338 states and 14642 transitions. [2021-05-21 21:30:52,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:52,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 14642 transitions. [2021-05-21 21:30:52,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:52,097 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:52,097 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:52,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-05-21 21:30:52,097 INFO L430 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:52,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:52,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1645436618, now seen corresponding path program 286 times [2021-05-21 21:30:52,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:52,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704039735] [2021-05-21 21:30:52,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:52,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:52,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:52,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704039735] [2021-05-21 21:30:52,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704039735] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:52,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:52,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:30:52,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343184302] [2021-05-21 21:30:52,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:30:52,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:52,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:30:52,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:30:52,257 INFO L87 Difference]: Start difference. First operand 4338 states and 14642 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:53,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:53,695 INFO L93 Difference]: Finished difference Result 5466 states and 18495 transitions. [2021-05-21 21:30:53,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-21 21:30:53,695 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:53,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:53,704 INFO L225 Difference]: With dead ends: 5466 [2021-05-21 21:30:53,705 INFO L226 Difference]: Without dead ends: 5399 [2021-05-21 21:30:53,705 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 926.6ms TimeCoverageRelationStatistics Valid=340, Invalid=3200, Unknown=0, NotChecked=0, Total=3540 [2021-05-21 21:30:53,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5399 states. [2021-05-21 21:30:53,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5399 to 4476. [2021-05-21 21:30:53,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4475 states have (on average 3.373854748603352) internal successors, (15098), 4475 states have internal predecessors, (15098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:53,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 15098 transitions. [2021-05-21 21:30:53,775 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 15098 transitions. Word has length 39 [2021-05-21 21:30:53,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:53,775 INFO L482 AbstractCegarLoop]: Abstraction has 4476 states and 15098 transitions. [2021-05-21 21:30:53,775 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:53,775 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 15098 transitions. [2021-05-21 21:30:53,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:53,781 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:53,781 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:53,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-05-21 21:30:53,781 INFO L430 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:53,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:53,781 INFO L82 PathProgramCache]: Analyzing trace with hash -74179352, now seen corresponding path program 287 times [2021-05-21 21:30:53,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:53,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610476159] [2021-05-21 21:30:53,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:53,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:53,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610476159] [2021-05-21 21:30:53,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610476159] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:53,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:53,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:30:53,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217952597] [2021-05-21 21:30:53,926 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:30:53,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:53,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:30:53,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:30:53,926 INFO L87 Difference]: Start difference. First operand 4476 states and 15098 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:55,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:55,837 INFO L93 Difference]: Finished difference Result 5562 states and 18756 transitions. [2021-05-21 21:30:55,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-21 21:30:55,837 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:55,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:55,845 INFO L225 Difference]: With dead ends: 5562 [2021-05-21 21:30:55,845 INFO L226 Difference]: Without dead ends: 5519 [2021-05-21 21:30:55,846 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1583 ImplicationChecksByTransitivity, 1254.6ms TimeCoverageRelationStatistics Valid=476, Invalid=4926, Unknown=0, NotChecked=0, Total=5402 [2021-05-21 21:30:55,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2021-05-21 21:30:55,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 4482. [2021-05-21 21:30:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 4481 states have (on average 3.372238339656327) internal successors, (15111), 4481 states have internal predecessors, (15111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:55,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 15111 transitions. [2021-05-21 21:30:55,913 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 15111 transitions. Word has length 39 [2021-05-21 21:30:55,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:55,913 INFO L482 AbstractCegarLoop]: Abstraction has 4482 states and 15111 transitions. [2021-05-21 21:30:55,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:55,913 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 15111 transitions. [2021-05-21 21:30:55,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:55,919 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:55,919 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:55,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-05-21 21:30:55,919 INFO L430 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:55,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:55,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1854777654, now seen corresponding path program 288 times [2021-05-21 21:30:55,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:55,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76252490] [2021-05-21 21:30:55,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:56,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:56,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:56,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76252490] [2021-05-21 21:30:56,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76252490] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:56,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:56,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:30:56,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150551772] [2021-05-21 21:30:56,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:30:56,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:56,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:30:56,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:30:56,064 INFO L87 Difference]: Start difference. First operand 4482 states and 15111 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:58,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:30:58,011 INFO L93 Difference]: Finished difference Result 5493 states and 18576 transitions. [2021-05-21 21:30:58,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-21 21:30:58,011 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:30:58,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:30:58,020 INFO L225 Difference]: With dead ends: 5493 [2021-05-21 21:30:58,020 INFO L226 Difference]: Without dead ends: 5429 [2021-05-21 21:30:58,020 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 1279.9ms TimeCoverageRelationStatistics Valid=469, Invalid=4787, Unknown=0, NotChecked=0, Total=5256 [2021-05-21 21:30:58,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5429 states. [2021-05-21 21:30:58,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5429 to 4464. [2021-05-21 21:30:58,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4464 states, 4463 states have (on average 3.374411830607215) internal successors, (15060), 4463 states have internal predecessors, (15060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:58,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4464 states to 4464 states and 15060 transitions. [2021-05-21 21:30:58,092 INFO L78 Accepts]: Start accepts. Automaton has 4464 states and 15060 transitions. Word has length 39 [2021-05-21 21:30:58,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:30:58,092 INFO L482 AbstractCegarLoop]: Abstraction has 4464 states and 15060 transitions. [2021-05-21 21:30:58,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:30:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4464 states and 15060 transitions. [2021-05-21 21:30:58,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:30:58,098 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:30:58,098 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:30:58,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-05-21 21:30:58,098 INFO L430 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:30:58,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:30:58,098 INFO L82 PathProgramCache]: Analyzing trace with hash 2031374026, now seen corresponding path program 289 times [2021-05-21 21:30:58,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:30:58,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221128318] [2021-05-21 21:30:58,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:30:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:30:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:30:58,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:30:58,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221128318] [2021-05-21 21:30:58,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221128318] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:30:58,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:30:58,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:30:58,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504995791] [2021-05-21 21:30:58,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:30:58,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:30:58,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:30:58,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:30:58,244 INFO L87 Difference]: Start difference. First operand 4464 states and 15060 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:00,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:00,003 INFO L93 Difference]: Finished difference Result 5504 states and 18584 transitions. [2021-05-21 21:31:00,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-21 21:31:00,003 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:00,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:00,011 INFO L225 Difference]: With dead ends: 5504 [2021-05-21 21:31:00,011 INFO L226 Difference]: Without dead ends: 5374 [2021-05-21 21:31:00,011 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 1114.2ms TimeCoverageRelationStatistics Valid=402, Invalid=4154, Unknown=0, NotChecked=0, Total=4556 [2021-05-21 21:31:00,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5374 states. [2021-05-21 21:31:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5374 to 4440. [2021-05-21 21:31:00,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4440 states, 4439 states have (on average 3.376436134264474) internal successors, (14988), 4439 states have internal predecessors, (14988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:00,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 14988 transitions. [2021-05-21 21:31:00,076 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 14988 transitions. Word has length 39 [2021-05-21 21:31:00,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:00,076 INFO L482 AbstractCegarLoop]: Abstraction has 4440 states and 14988 transitions. [2021-05-21 21:31:00,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:00,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 14988 transitions. [2021-05-21 21:31:00,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:00,082 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:00,082 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:00,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-05-21 21:31:00,082 INFO L430 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:00,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:00,082 INFO L82 PathProgramCache]: Analyzing trace with hash -425641418, now seen corresponding path program 290 times [2021-05-21 21:31:00,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:00,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402316340] [2021-05-21 21:31:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:00,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:00,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:00,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402316340] [2021-05-21 21:31:00,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402316340] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:00,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:00,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:00,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979791640] [2021-05-21 21:31:00,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:00,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:00,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:00,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:00,240 INFO L87 Difference]: Start difference. First operand 4440 states and 14988 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:01,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:01,894 INFO L93 Difference]: Finished difference Result 5550 states and 18717 transitions. [2021-05-21 21:31:01,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-21 21:31:01,895 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:01,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:01,903 INFO L225 Difference]: With dead ends: 5550 [2021-05-21 21:31:01,903 INFO L226 Difference]: Without dead ends: 5483 [2021-05-21 21:31:01,903 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 1086.0ms TimeCoverageRelationStatistics Valid=427, Invalid=4265, Unknown=0, NotChecked=0, Total=4692 [2021-05-21 21:31:01,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5483 states. [2021-05-21 21:31:01,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5483 to 4466. [2021-05-21 21:31:01,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.374468085106383) internal successors, (15067), 4465 states have internal predecessors, (15067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:01,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15067 transitions. [2021-05-21 21:31:01,973 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15067 transitions. Word has length 39 [2021-05-21 21:31:01,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:01,973 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15067 transitions. [2021-05-21 21:31:01,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:01,973 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15067 transitions. [2021-05-21 21:31:01,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:01,979 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:01,979 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:01,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-05-21 21:31:01,979 INFO L430 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:01,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:01,979 INFO L82 PathProgramCache]: Analyzing trace with hash -2145257388, now seen corresponding path program 291 times [2021-05-21 21:31:01,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:01,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743210294] [2021-05-21 21:31:01,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:02,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:02,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743210294] [2021-05-21 21:31:02,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743210294] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:02,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:02,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:02,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842897879] [2021-05-21 21:31:02,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:02,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:02,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:02,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:02,137 INFO L87 Difference]: Start difference. First operand 4466 states and 15067 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:04,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:04,309 INFO L93 Difference]: Finished difference Result 5679 states and 19044 transitions. [2021-05-21 21:31:04,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-21 21:31:04,309 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:04,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:04,318 INFO L225 Difference]: With dead ends: 5679 [2021-05-21 21:31:04,318 INFO L226 Difference]: Without dead ends: 5636 [2021-05-21 21:31:04,319 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2058 ImplicationChecksByTransitivity, 1458.7ms TimeCoverageRelationStatistics Valid=570, Invalid=6236, Unknown=0, NotChecked=0, Total=6806 [2021-05-21 21:31:04,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5636 states. [2021-05-21 21:31:04,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5636 to 4472. [2021-05-21 21:31:04,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4471 states have (on average 3.372847237754417) internal successors, (15080), 4471 states have internal predecessors, (15080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:04,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 15080 transitions. [2021-05-21 21:31:04,390 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 15080 transitions. Word has length 39 [2021-05-21 21:31:04,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:04,390 INFO L482 AbstractCegarLoop]: Abstraction has 4472 states and 15080 transitions. [2021-05-21 21:31:04,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:04,390 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 15080 transitions. [2021-05-21 21:31:04,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:04,395 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:04,396 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:04,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-05-21 21:31:04,396 INFO L430 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:04,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:04,396 INFO L82 PathProgramCache]: Analyzing trace with hash 369111606, now seen corresponding path program 292 times [2021-05-21 21:31:04,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:04,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69972603] [2021-05-21 21:31:04,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:04,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:04,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:04,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69972603] [2021-05-21 21:31:04,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69972603] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:04,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:04,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:04,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438397283] [2021-05-21 21:31:04,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:04,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:04,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:04,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:04,555 INFO L87 Difference]: Start difference. First operand 4472 states and 15080 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:06,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:06,642 INFO L93 Difference]: Finished difference Result 5610 states and 18864 transitions. [2021-05-21 21:31:06,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-21 21:31:06,643 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:06,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:06,651 INFO L225 Difference]: With dead ends: 5610 [2021-05-21 21:31:06,652 INFO L226 Difference]: Without dead ends: 5546 [2021-05-21 21:31:06,652 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1869 ImplicationChecksByTransitivity, 1426.2ms TimeCoverageRelationStatistics Valid=544, Invalid=5776, Unknown=0, NotChecked=0, Total=6320 [2021-05-21 21:31:06,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5546 states. [2021-05-21 21:31:06,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5546 to 4454. [2021-05-21 21:31:06,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 3.3768246126207053) internal successors, (15037), 4453 states have internal predecessors, (15037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:06,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 15037 transitions. [2021-05-21 21:31:06,724 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 15037 transitions. Word has length 39 [2021-05-21 21:31:06,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:06,724 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 15037 transitions. [2021-05-21 21:31:06,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:06,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 15037 transitions. [2021-05-21 21:31:06,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:06,729 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:06,730 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:06,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-05-21 21:31:06,730 INFO L430 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:06,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:06,730 INFO L82 PathProgramCache]: Analyzing trace with hash 989546006, now seen corresponding path program 293 times [2021-05-21 21:31:06,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:06,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960988979] [2021-05-21 21:31:06,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:06,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:06,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:06,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960988979] [2021-05-21 21:31:06,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960988979] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:06,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:06,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:06,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448455384] [2021-05-21 21:31:06,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:06,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:06,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:06,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:06,898 INFO L87 Difference]: Start difference. First operand 4454 states and 15037 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:08,291 INFO L93 Difference]: Finished difference Result 5450 states and 18401 transitions. [2021-05-21 21:31:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-21 21:31:08,292 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:08,301 INFO L225 Difference]: With dead ends: 5450 [2021-05-21 21:31:08,301 INFO L226 Difference]: Without dead ends: 5383 [2021-05-21 21:31:08,301 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 916.8ms TimeCoverageRelationStatistics Valid=346, Invalid=3314, Unknown=0, NotChecked=0, Total=3660 [2021-05-21 21:31:08,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5383 states. [2021-05-21 21:31:08,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5383 to 4458. [2021-05-21 21:31:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4457 states have (on average 3.376037693515818) internal successors, (15047), 4457 states have internal predecessors, (15047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 15047 transitions. [2021-05-21 21:31:08,371 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 15047 transitions. Word has length 39 [2021-05-21 21:31:08,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:08,371 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 15047 transitions. [2021-05-21 21:31:08,371 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:08,371 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 15047 transitions. [2021-05-21 21:31:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:08,377 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:08,377 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:08,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-05-21 21:31:08,377 INFO L430 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:08,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:08,377 INFO L82 PathProgramCache]: Analyzing trace with hash 858951158, now seen corresponding path program 294 times [2021-05-21 21:31:08,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:08,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772450982] [2021-05-21 21:31:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:08,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:08,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772450982] [2021-05-21 21:31:08,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772450982] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:08,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:08,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:08,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892232347] [2021-05-21 21:31:08,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:08,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:08,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:08,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:08,535 INFO L87 Difference]: Start difference. First operand 4458 states and 15047 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:09,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:09,982 INFO L93 Difference]: Finished difference Result 5459 states and 18385 transitions. [2021-05-21 21:31:09,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-21 21:31:09,982 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:09,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:09,991 INFO L225 Difference]: With dead ends: 5459 [2021-05-21 21:31:09,991 INFO L226 Difference]: Without dead ends: 5396 [2021-05-21 21:31:09,991 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 952.0ms TimeCoverageRelationStatistics Valid=352, Invalid=3430, Unknown=0, NotChecked=0, Total=3782 [2021-05-21 21:31:10,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5396 states. [2021-05-21 21:31:10,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5396 to 4458. [2021-05-21 21:31:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4457 states have (on average 3.375140228853489) internal successors, (15043), 4457 states have internal predecessors, (15043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:10,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 15043 transitions. [2021-05-21 21:31:10,099 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 15043 transitions. Word has length 39 [2021-05-21 21:31:10,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:10,099 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 15043 transitions. [2021-05-21 21:31:10,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:10,099 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 15043 transitions. [2021-05-21 21:31:10,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:10,105 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:10,105 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:10,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-05-21 21:31:10,105 INFO L430 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:10,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:10,105 INFO L82 PathProgramCache]: Analyzing trace with hash 723272566, now seen corresponding path program 295 times [2021-05-21 21:31:10,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:10,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411915943] [2021-05-21 21:31:10,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:10,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:10,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411915943] [2021-05-21 21:31:10,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411915943] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:10,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:10,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:10,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334646752] [2021-05-21 21:31:10,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:10,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:10,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:10,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:10,277 INFO L87 Difference]: Start difference. First operand 4458 states and 15043 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:12,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:12,241 INFO L93 Difference]: Finished difference Result 5626 states and 18810 transitions. [2021-05-21 21:31:12,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-21 21:31:12,241 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:12,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:12,250 INFO L225 Difference]: With dead ends: 5626 [2021-05-21 21:31:12,251 INFO L226 Difference]: Without dead ends: 5583 [2021-05-21 21:31:12,251 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 1367.8ms TimeCoverageRelationStatistics Valid=519, Invalid=5333, Unknown=0, NotChecked=0, Total=5852 [2021-05-21 21:31:12,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5583 states. [2021-05-21 21:31:12,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5583 to 4466. [2021-05-21 21:31:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.373572228443449) internal successors, (15063), 4465 states have internal predecessors, (15063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:12,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15063 transitions. [2021-05-21 21:31:12,337 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15063 transitions. Word has length 39 [2021-05-21 21:31:12,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:12,337 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15063 transitions. [2021-05-21 21:31:12,338 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:12,338 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15063 transitions. [2021-05-21 21:31:12,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:12,343 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:12,343 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:12,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-05-21 21:31:12,343 INFO L430 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:12,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:12,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1057325736, now seen corresponding path program 296 times [2021-05-21 21:31:12,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:12,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795873079] [2021-05-21 21:31:12,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:12,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:12,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795873079] [2021-05-21 21:31:12,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795873079] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:12,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:12,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:12,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761785405] [2021-05-21 21:31:12,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:12,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:12,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:12,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:12,505 INFO L87 Difference]: Start difference. First operand 4466 states and 15063 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:14,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:14,370 INFO L93 Difference]: Finished difference Result 5614 states and 18772 transitions. [2021-05-21 21:31:14,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-21 21:31:14,370 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:14,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:14,380 INFO L225 Difference]: With dead ends: 5614 [2021-05-21 21:31:14,380 INFO L226 Difference]: Without dead ends: 5562 [2021-05-21 21:31:14,380 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1636 ImplicationChecksByTransitivity, 1299.6ms TimeCoverageRelationStatistics Valid=511, Invalid=5189, Unknown=0, NotChecked=0, Total=5700 [2021-05-21 21:31:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2021-05-21 21:31:14,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 4458. [2021-05-21 21:31:14,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4457 states have (on average 3.375140228853489) internal successors, (15043), 4457 states have internal predecessors, (15043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 15043 transitions. [2021-05-21 21:31:14,464 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 15043 transitions. Word has length 39 [2021-05-21 21:31:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:14,464 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 15043 transitions. [2021-05-21 21:31:14,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:14,464 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 15043 transitions. [2021-05-21 21:31:14,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:14,470 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:14,470 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:14,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-05-21 21:31:14,470 INFO L430 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:14,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:14,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1641756136, now seen corresponding path program 297 times [2021-05-21 21:31:14,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:14,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066382030] [2021-05-21 21:31:14,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:14,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:14,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066382030] [2021-05-21 21:31:14,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066382030] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:14,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:14,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:14,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687329769] [2021-05-21 21:31:14,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:14,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:14,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:14,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:14,627 INFO L87 Difference]: Start difference. First operand 4458 states and 15043 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:16,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:16,080 INFO L93 Difference]: Finished difference Result 5597 states and 18690 transitions. [2021-05-21 21:31:16,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-21 21:31:16,080 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:16,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:16,089 INFO L225 Difference]: With dead ends: 5597 [2021-05-21 21:31:16,089 INFO L226 Difference]: Without dead ends: 5542 [2021-05-21 21:31:16,089 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1136 ImplicationChecksByTransitivity, 972.4ms TimeCoverageRelationStatistics Valid=396, Invalid=3894, Unknown=0, NotChecked=0, Total=4290 [2021-05-21 21:31:16,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5542 states. [2021-05-21 21:31:16,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5542 to 4460. [2021-05-21 21:31:16,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4460 states, 4459 states have (on average 3.3742991702175376) internal successors, (15046), 4459 states have internal predecessors, (15046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:16,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4460 states to 4460 states and 15046 transitions. [2021-05-21 21:31:16,158 INFO L78 Accepts]: Start accepts. Automaton has 4460 states and 15046 transitions. Word has length 39 [2021-05-21 21:31:16,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:16,158 INFO L482 AbstractCegarLoop]: Abstraction has 4460 states and 15046 transitions. [2021-05-21 21:31:16,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:16,158 INFO L276 IsEmpty]: Start isEmpty. Operand 4460 states and 15046 transitions. [2021-05-21 21:31:16,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:16,163 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:16,163 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:16,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-05-21 21:31:16,163 INFO L430 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:16,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:16,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1480558938, now seen corresponding path program 298 times [2021-05-21 21:31:16,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:16,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417480377] [2021-05-21 21:31:16,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:16,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:16,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:16,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417480377] [2021-05-21 21:31:16,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417480377] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:16,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:16,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:16,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721335379] [2021-05-21 21:31:16,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:16,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:16,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:16,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:16,351 INFO L87 Difference]: Start difference. First operand 4460 states and 15046 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:17,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:17,779 INFO L93 Difference]: Finished difference Result 5510 states and 18499 transitions. [2021-05-21 21:31:17,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-21 21:31:17,779 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:17,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:17,788 INFO L225 Difference]: With dead ends: 5510 [2021-05-21 21:31:17,788 INFO L226 Difference]: Without dead ends: 5446 [2021-05-21 21:31:17,789 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 978.0ms TimeCoverageRelationStatistics Valid=379, Invalid=3653, Unknown=0, NotChecked=0, Total=4032 [2021-05-21 21:31:17,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5446 states. [2021-05-21 21:31:17,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 4454. [2021-05-21 21:31:17,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 3.3759263417920504) internal successors, (15033), 4453 states have internal predecessors, (15033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 15033 transitions. [2021-05-21 21:31:17,864 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 15033 transitions. Word has length 39 [2021-05-21 21:31:17,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:17,864 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 15033 transitions. [2021-05-21 21:31:17,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:17,864 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 15033 transitions. [2021-05-21 21:31:17,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:17,870 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:17,870 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:17,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-05-21 21:31:17,870 INFO L430 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:17,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:17,870 INFO L82 PathProgramCache]: Analyzing trace with hash 761489384, now seen corresponding path program 299 times [2021-05-21 21:31:17,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:17,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605559198] [2021-05-21 21:31:17,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:18,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:18,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605559198] [2021-05-21 21:31:18,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605559198] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:18,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:18,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:18,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335705458] [2021-05-21 21:31:18,029 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:18,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:18,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:18,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:18,029 INFO L87 Difference]: Start difference. First operand 4454 states and 15033 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:20,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:20,088 INFO L93 Difference]: Finished difference Result 5699 states and 19074 transitions. [2021-05-21 21:31:20,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-21 21:31:20,088 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:20,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:20,096 INFO L225 Difference]: With dead ends: 5699 [2021-05-21 21:31:20,096 INFO L226 Difference]: Without dead ends: 5562 [2021-05-21 21:31:20,097 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 1329.4ms TimeCoverageRelationStatistics Valid=466, Invalid=5234, Unknown=0, NotChecked=0, Total=5700 [2021-05-21 21:31:20,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2021-05-21 21:31:20,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 4462. [2021-05-21 21:31:20,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4461 states have (on average 3.3770455054920423) internal successors, (15065), 4461 states have internal predecessors, (15065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:20,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 15065 transitions. [2021-05-21 21:31:20,158 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 15065 transitions. Word has length 39 [2021-05-21 21:31:20,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:20,158 INFO L482 AbstractCegarLoop]: Abstraction has 4462 states and 15065 transitions. [2021-05-21 21:31:20,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:20,158 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 15065 transitions. [2021-05-21 21:31:20,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:20,163 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:20,163 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:20,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-05-21 21:31:20,163 INFO L430 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:20,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:20,163 INFO L82 PathProgramCache]: Analyzing trace with hash -733401516, now seen corresponding path program 300 times [2021-05-21 21:31:20,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:20,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055435348] [2021-05-21 21:31:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:20,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:20,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055435348] [2021-05-21 21:31:20,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055435348] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:20,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:20,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:20,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231593797] [2021-05-21 21:31:20,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:20,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:20,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:20,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:20,318 INFO L87 Difference]: Start difference. First operand 4462 states and 15065 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:22,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:22,157 INFO L93 Difference]: Finished difference Result 5658 states and 18890 transitions. [2021-05-21 21:31:22,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-21 21:31:22,157 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:22,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:22,166 INFO L225 Difference]: With dead ends: 5658 [2021-05-21 21:31:22,166 INFO L226 Difference]: Without dead ends: 5594 [2021-05-21 21:31:22,166 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1581 ImplicationChecksByTransitivity, 1246.7ms TimeCoverageRelationStatistics Valid=485, Invalid=5065, Unknown=0, NotChecked=0, Total=5550 [2021-05-21 21:31:22,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2021-05-21 21:31:22,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 4466. [2021-05-21 21:31:22,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.3762597984322507) internal successors, (15075), 4465 states have internal predecessors, (15075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:22,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15075 transitions. [2021-05-21 21:31:22,236 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15075 transitions. Word has length 39 [2021-05-21 21:31:22,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:22,236 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15075 transitions. [2021-05-21 21:31:22,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:22,236 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15075 transitions. [2021-05-21 21:31:22,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:22,241 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:22,241 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:22,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-05-21 21:31:22,242 INFO L430 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:22,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:22,242 INFO L82 PathProgramCache]: Analyzing trace with hash 185082054, now seen corresponding path program 301 times [2021-05-21 21:31:22,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:22,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423506095] [2021-05-21 21:31:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:22,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:22,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423506095] [2021-05-21 21:31:22,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423506095] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:22,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:22,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:22,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364568298] [2021-05-21 21:31:22,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:22,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:22,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:22,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:22,407 INFO L87 Difference]: Start difference. First operand 4466 states and 15075 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:23,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:23,818 INFO L93 Difference]: Finished difference Result 5584 states and 18676 transitions. [2021-05-21 21:31:23,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-21 21:31:23,819 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:23,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:23,828 INFO L225 Difference]: With dead ends: 5584 [2021-05-21 21:31:23,828 INFO L226 Difference]: Without dead ends: 5529 [2021-05-21 21:31:23,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 924.1ms TimeCoverageRelationStatistics Valid=351, Invalid=3555, Unknown=0, NotChecked=0, Total=3906 [2021-05-21 21:31:23,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2021-05-21 21:31:23,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 4468. [2021-05-21 21:31:23,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4467 states have (on average 3.3754197447951646) internal successors, (15078), 4467 states have internal predecessors, (15078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 15078 transitions. [2021-05-21 21:31:23,901 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 15078 transitions. Word has length 39 [2021-05-21 21:31:23,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:23,901 INFO L482 AbstractCegarLoop]: Abstraction has 4468 states and 15078 transitions. [2021-05-21 21:31:23,901 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 15078 transitions. [2021-05-21 21:31:23,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:23,907 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:23,907 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:23,907 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-05-21 21:31:23,907 INFO L430 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:23,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:23,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1357734276, now seen corresponding path program 302 times [2021-05-21 21:31:23,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:23,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863415254] [2021-05-21 21:31:23,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:24,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:24,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:24,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863415254] [2021-05-21 21:31:24,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863415254] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:24,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:24,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:24,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188246283] [2021-05-21 21:31:24,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:24,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:24,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:24,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:24,066 INFO L87 Difference]: Start difference. First operand 4468 states and 15078 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:25,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:25,511 INFO L93 Difference]: Finished difference Result 5602 states and 18720 transitions. [2021-05-21 21:31:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-21 21:31:25,511 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:25,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:25,520 INFO L225 Difference]: With dead ends: 5602 [2021-05-21 21:31:25,521 INFO L226 Difference]: Without dead ends: 5542 [2021-05-21 21:31:25,521 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 957.8ms TimeCoverageRelationStatistics Valid=362, Invalid=3670, Unknown=0, NotChecked=0, Total=4032 [2021-05-21 21:31:25,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5542 states. [2021-05-21 21:31:25,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5542 to 4466. [2021-05-21 21:31:25,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.375811870100784) internal successors, (15073), 4465 states have internal predecessors, (15073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15073 transitions. [2021-05-21 21:31:25,596 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15073 transitions. Word has length 39 [2021-05-21 21:31:25,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:25,596 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15073 transitions. [2021-05-21 21:31:25,596 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:25,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15073 transitions. [2021-05-21 21:31:25,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:25,601 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:25,601 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:25,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-05-21 21:31:25,601 INFO L430 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:25,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:25,601 INFO L82 PathProgramCache]: Analyzing trace with hash -721832266, now seen corresponding path program 303 times [2021-05-21 21:31:25,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:25,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172298589] [2021-05-21 21:31:25,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:25,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:25,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172298589] [2021-05-21 21:31:25,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172298589] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:25,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:25,745 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:31:25,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125293907] [2021-05-21 21:31:25,745 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:31:25,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:25,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:31:25,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:31:25,745 INFO L87 Difference]: Start difference. First operand 4466 states and 15073 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:27,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:27,001 INFO L93 Difference]: Finished difference Result 5459 states and 18402 transitions. [2021-05-21 21:31:27,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-21 21:31:27,001 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:27,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:27,010 INFO L225 Difference]: With dead ends: 5459 [2021-05-21 21:31:27,010 INFO L226 Difference]: Without dead ends: 5383 [2021-05-21 21:31:27,010 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 812.5ms TimeCoverageRelationStatistics Valid=312, Invalid=2994, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 21:31:27,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5383 states. [2021-05-21 21:31:27,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5383 to 4474. [2021-05-21 21:31:27,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4473 states have (on average 3.3733512184216408) internal successors, (15089), 4473 states have internal predecessors, (15089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:27,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 15089 transitions. [2021-05-21 21:31:27,077 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 15089 transitions. Word has length 39 [2021-05-21 21:31:27,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:27,077 INFO L482 AbstractCegarLoop]: Abstraction has 4474 states and 15089 transitions. [2021-05-21 21:31:27,078 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:27,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 15089 transitions. [2021-05-21 21:31:27,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:27,083 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:27,083 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:27,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-05-21 21:31:27,083 INFO L430 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:27,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:27,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1739885878, now seen corresponding path program 304 times [2021-05-21 21:31:27,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:27,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614169094] [2021-05-21 21:31:27,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:27,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:27,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:27,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614169094] [2021-05-21 21:31:27,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614169094] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:27,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:27,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:27,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010658254] [2021-05-21 21:31:27,238 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:27,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:27,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:27,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:27,238 INFO L87 Difference]: Start difference. First operand 4474 states and 15089 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:28,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:28,568 INFO L93 Difference]: Finished difference Result 5489 states and 18453 transitions. [2021-05-21 21:31:28,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-21 21:31:28,569 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:28,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:28,577 INFO L225 Difference]: With dead ends: 5489 [2021-05-21 21:31:28,577 INFO L226 Difference]: Without dead ends: 5411 [2021-05-21 21:31:28,578 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 866.4ms TimeCoverageRelationStatistics Valid=328, Invalid=3332, Unknown=0, NotChecked=0, Total=3660 [2021-05-21 21:31:28,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2021-05-21 21:31:28,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 4454. [2021-05-21 21:31:28,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 3.3768246126207053) internal successors, (15037), 4453 states have internal predecessors, (15037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:28,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 15037 transitions. [2021-05-21 21:31:28,660 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 15037 transitions. Word has length 39 [2021-05-21 21:31:28,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:28,660 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 15037 transitions. [2021-05-21 21:31:28,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:28,660 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 15037 transitions. [2021-05-21 21:31:28,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:28,666 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:28,666 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:28,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-05-21 21:31:28,666 INFO L430 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:28,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:28,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1527944876, now seen corresponding path program 305 times [2021-05-21 21:31:28,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:28,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417799307] [2021-05-21 21:31:28,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:28,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:28,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417799307] [2021-05-21 21:31:28,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417799307] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:28,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:28,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:31:28,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594185579] [2021-05-21 21:31:28,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:31:28,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:28,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:31:28,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:31:28,812 INFO L87 Difference]: Start difference. First operand 4454 states and 15037 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:30,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:30,189 INFO L93 Difference]: Finished difference Result 5408 states and 18294 transitions. [2021-05-21 21:31:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-21 21:31:30,189 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:30,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:30,198 INFO L225 Difference]: With dead ends: 5408 [2021-05-21 21:31:30,198 INFO L226 Difference]: Without dead ends: 5341 [2021-05-21 21:31:30,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 846.3ms TimeCoverageRelationStatistics Valid=324, Invalid=3098, Unknown=0, NotChecked=0, Total=3422 [2021-05-21 21:31:30,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2021-05-21 21:31:30,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 4502. [2021-05-21 21:31:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4502 states, 4501 states have (on average 3.3732503888024885) internal successors, (15183), 4501 states have internal predecessors, (15183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:30,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 15183 transitions. [2021-05-21 21:31:30,273 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 15183 transitions. Word has length 39 [2021-05-21 21:31:30,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:30,273 INFO L482 AbstractCegarLoop]: Abstraction has 4502 states and 15183 transitions. [2021-05-21 21:31:30,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:30,273 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 15183 transitions. [2021-05-21 21:31:30,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:30,279 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:30,279 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:30,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-05-21 21:31:30,279 INFO L430 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:30,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:30,279 INFO L82 PathProgramCache]: Analyzing trace with hash -191671094, now seen corresponding path program 306 times [2021-05-21 21:31:30,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:30,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167610889] [2021-05-21 21:31:30,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:30,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:30,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167610889] [2021-05-21 21:31:30,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167610889] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:30,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:30,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:31:30,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329036021] [2021-05-21 21:31:30,424 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:31:30,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:30,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:31:30,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:31:30,425 INFO L87 Difference]: Start difference. First operand 4502 states and 15183 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:32,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:32,294 INFO L93 Difference]: Finished difference Result 5504 states and 18555 transitions. [2021-05-21 21:31:32,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-21 21:31:32,294 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:32,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:32,303 INFO L225 Difference]: With dead ends: 5504 [2021-05-21 21:31:32,303 INFO L226 Difference]: Without dead ends: 5461 [2021-05-21 21:31:32,303 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1527 ImplicationChecksByTransitivity, 1247.0ms TimeCoverageRelationStatistics Valid=459, Invalid=4797, Unknown=0, NotChecked=0, Total=5256 [2021-05-21 21:31:32,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5461 states. [2021-05-21 21:31:32,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5461 to 4508. [2021-05-21 21:31:32,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4508 states, 4507 states have (on average 3.3716441091635234) internal successors, (15196), 4507 states have internal predecessors, (15196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:32,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4508 states to 4508 states and 15196 transitions. [2021-05-21 21:31:32,377 INFO L78 Accepts]: Start accepts. Automaton has 4508 states and 15196 transitions. Word has length 39 [2021-05-21 21:31:32,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:32,378 INFO L482 AbstractCegarLoop]: Abstraction has 4508 states and 15196 transitions. [2021-05-21 21:31:32,378 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:32,378 INFO L276 IsEmpty]: Start isEmpty. Operand 4508 states and 15196 transitions. [2021-05-21 21:31:32,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:32,383 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:32,383 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:32,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-05-21 21:31:32,384 INFO L430 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:32,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:32,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1972269396, now seen corresponding path program 307 times [2021-05-21 21:31:32,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:32,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147238964] [2021-05-21 21:31:32,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:32,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:32,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:32,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147238964] [2021-05-21 21:31:32,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147238964] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:32,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:32,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:31:32,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306159158] [2021-05-21 21:31:32,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:31:32,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:32,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:31:32,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:31:32,528 INFO L87 Difference]: Start difference. First operand 4508 states and 15196 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:34,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:34,392 INFO L93 Difference]: Finished difference Result 5435 states and 18375 transitions. [2021-05-21 21:31:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-21 21:31:34,392 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:34,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:34,401 INFO L225 Difference]: With dead ends: 5435 [2021-05-21 21:31:34,401 INFO L226 Difference]: Without dead ends: 5371 [2021-05-21 21:31:34,401 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 1248.8ms TimeCoverageRelationStatistics Valid=452, Invalid=4660, Unknown=0, NotChecked=0, Total=5112 [2021-05-21 21:31:34,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5371 states. [2021-05-21 21:31:34,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5371 to 4490. [2021-05-21 21:31:34,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4489 states have (on average 3.373802628647806) internal successors, (15145), 4489 states have internal predecessors, (15145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 15145 transitions. [2021-05-21 21:31:34,469 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 15145 transitions. Word has length 39 [2021-05-21 21:31:34,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:34,469 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 15145 transitions. [2021-05-21 21:31:34,469 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:34,469 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 15145 transitions. [2021-05-21 21:31:34,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:34,474 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:34,475 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:34,475 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-05-21 21:31:34,475 INFO L430 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:34,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:34,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1913882284, now seen corresponding path program 308 times [2021-05-21 21:31:34,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:34,475 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446419848] [2021-05-21 21:31:34,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:34,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:34,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446419848] [2021-05-21 21:31:34,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446419848] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:34,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:34,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:31:34,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558563744] [2021-05-21 21:31:34,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:31:34,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:34,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:31:34,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:31:34,625 INFO L87 Difference]: Start difference. First operand 4490 states and 15145 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:36,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:36,385 INFO L93 Difference]: Finished difference Result 5456 states and 18422 transitions. [2021-05-21 21:31:36,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-21 21:31:36,385 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:36,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:36,394 INFO L225 Difference]: With dead ends: 5456 [2021-05-21 21:31:36,394 INFO L226 Difference]: Without dead ends: 5326 [2021-05-21 21:31:36,394 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 1129.0ms TimeCoverageRelationStatistics Valid=387, Invalid=4035, Unknown=0, NotChecked=0, Total=4422 [2021-05-21 21:31:36,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5326 states. [2021-05-21 21:31:36,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5326 to 4466. [2021-05-21 21:31:36,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.3749160134378497) internal successors, (15069), 4465 states have internal predecessors, (15069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:36,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15069 transitions. [2021-05-21 21:31:36,460 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15069 transitions. Word has length 39 [2021-05-21 21:31:36,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:36,460 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15069 transitions. [2021-05-21 21:31:36,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:36,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15069 transitions. [2021-05-21 21:31:36,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:36,465 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:36,465 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:36,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-05-21 21:31:36,466 INFO L430 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:36,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:36,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1252737994, now seen corresponding path program 309 times [2021-05-21 21:31:36,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:36,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980184908] [2021-05-21 21:31:36,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:36,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:36,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980184908] [2021-05-21 21:31:36,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980184908] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:36,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:36,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:36,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246853534] [2021-05-21 21:31:36,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:36,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:36,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:36,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:36,624 INFO L87 Difference]: Start difference. First operand 4466 states and 15069 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:38,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:38,201 INFO L93 Difference]: Finished difference Result 5501 states and 18545 transitions. [2021-05-21 21:31:38,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-21 21:31:38,201 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:38,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:38,210 INFO L225 Difference]: With dead ends: 5501 [2021-05-21 21:31:38,210 INFO L226 Difference]: Without dead ends: 5434 [2021-05-21 21:31:38,211 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 984.1ms TimeCoverageRelationStatistics Valid=375, Invalid=3915, Unknown=0, NotChecked=0, Total=4290 [2021-05-21 21:31:38,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5434 states. [2021-05-21 21:31:38,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5434 to 4484. [2021-05-21 21:31:38,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4484 states, 4483 states have (on average 3.3720722730314523) internal successors, (15117), 4483 states have internal predecessors, (15117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 15117 transitions. [2021-05-21 21:31:38,279 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 15117 transitions. Word has length 39 [2021-05-21 21:31:38,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:38,279 INFO L482 AbstractCegarLoop]: Abstraction has 4484 states and 15117 transitions. [2021-05-21 21:31:38,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:38,279 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 15117 transitions. [2021-05-21 21:31:38,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:38,284 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:38,284 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:38,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-05-21 21:31:38,284 INFO L430 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:38,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:38,284 INFO L82 PathProgramCache]: Analyzing trace with hash -466877976, now seen corresponding path program 310 times [2021-05-21 21:31:38,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:38,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055228389] [2021-05-21 21:31:38,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:38,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:38,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055228389] [2021-05-21 21:31:38,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055228389] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:38,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:38,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:38,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115198706] [2021-05-21 21:31:38,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:38,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:38,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:38,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:38,441 INFO L87 Difference]: Start difference. First operand 4484 states and 15117 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:40,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:40,515 INFO L93 Difference]: Finished difference Result 5630 states and 18872 transitions. [2021-05-21 21:31:40,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-21 21:31:40,515 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:40,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:40,524 INFO L225 Difference]: With dead ends: 5630 [2021-05-21 21:31:40,524 INFO L226 Difference]: Without dead ends: 5587 [2021-05-21 21:31:40,525 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1871 ImplicationChecksByTransitivity, 1385.9ms TimeCoverageRelationStatistics Valid=517, Invalid=5803, Unknown=0, NotChecked=0, Total=6320 [2021-05-21 21:31:40,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5587 states. [2021-05-21 21:31:40,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5587 to 4490. [2021-05-21 21:31:40,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4489 states have (on average 3.370461127199822) internal successors, (15130), 4489 states have internal predecessors, (15130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:40,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 15130 transitions. [2021-05-21 21:31:40,595 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 15130 transitions. Word has length 39 [2021-05-21 21:31:40,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:40,596 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 15130 transitions. [2021-05-21 21:31:40,596 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:40,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 15130 transitions. [2021-05-21 21:31:40,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:40,601 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:40,601 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:40,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-05-21 21:31:40,601 INFO L430 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:40,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:40,601 INFO L82 PathProgramCache]: Analyzing trace with hash 2047491018, now seen corresponding path program 311 times [2021-05-21 21:31:40,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:40,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856785594] [2021-05-21 21:31:40,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:40,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:40,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:40,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856785594] [2021-05-21 21:31:40,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856785594] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:40,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:40,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:40,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677595385] [2021-05-21 21:31:40,758 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:40,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:40,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:40,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:40,759 INFO L87 Difference]: Start difference. First operand 4490 states and 15130 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:42,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:42,756 INFO L93 Difference]: Finished difference Result 5561 states and 18692 transitions. [2021-05-21 21:31:42,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-21 21:31:42,756 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:42,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:42,765 INFO L225 Difference]: With dead ends: 5561 [2021-05-21 21:31:42,765 INFO L226 Difference]: Without dead ends: 5497 [2021-05-21 21:31:42,765 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 1333.5ms TimeCoverageRelationStatistics Valid=491, Invalid=5361, Unknown=0, NotChecked=0, Total=5852 [2021-05-21 21:31:42,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5497 states. [2021-05-21 21:31:42,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5497 to 4472. [2021-05-21 21:31:42,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4471 states have (on average 3.373965555804071) internal successors, (15085), 4471 states have internal predecessors, (15085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:42,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 15085 transitions. [2021-05-21 21:31:42,834 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 15085 transitions. Word has length 39 [2021-05-21 21:31:42,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:42,834 INFO L482 AbstractCegarLoop]: Abstraction has 4472 states and 15085 transitions. [2021-05-21 21:31:42,834 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:42,834 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 15085 transitions. [2021-05-21 21:31:42,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:42,839 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:42,839 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:42,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-05-21 21:31:42,839 INFO L430 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:42,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:42,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1735685238, now seen corresponding path program 312 times [2021-05-21 21:31:42,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:42,839 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003135431] [2021-05-21 21:31:42,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:42,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:42,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003135431] [2021-05-21 21:31:42,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003135431] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:42,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:42,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:42,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567450118] [2021-05-21 21:31:42,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:42,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:42,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:42,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:42,994 INFO L87 Difference]: Start difference. First operand 4472 states and 15085 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:44,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:44,325 INFO L93 Difference]: Finished difference Result 5403 states and 18233 transitions. [2021-05-21 21:31:44,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-21 21:31:44,326 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:44,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:44,334 INFO L225 Difference]: With dead ends: 5403 [2021-05-21 21:31:44,335 INFO L226 Difference]: Without dead ends: 5336 [2021-05-21 21:31:44,335 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 820.4ms TimeCoverageRelationStatistics Valid=296, Invalid=3010, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 21:31:44,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5336 states. [2021-05-21 21:31:44,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5336 to 4490. [2021-05-21 21:31:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4489 states have (on average 3.369792826910225) internal successors, (15127), 4489 states have internal predecessors, (15127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:44,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 15127 transitions. [2021-05-21 21:31:44,404 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 15127 transitions. Word has length 39 [2021-05-21 21:31:44,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:44,404 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 15127 transitions. [2021-05-21 21:31:44,404 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:44,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 15127 transitions. [2021-05-21 21:31:44,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:44,409 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:44,409 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:44,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-05-21 21:31:44,410 INFO L430 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:44,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:44,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1377615030, now seen corresponding path program 313 times [2021-05-21 21:31:44,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:44,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817500244] [2021-05-21 21:31:44,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:44,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:44,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817500244] [2021-05-21 21:31:44,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817500244] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:44,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:44,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:44,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119280110] [2021-05-21 21:31:44,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:44,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:44,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:44,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:44,566 INFO L87 Difference]: Start difference. First operand 4490 states and 15127 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:45,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:45,858 INFO L93 Difference]: Finished difference Result 5420 states and 18237 transitions. [2021-05-21 21:31:45,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-21 21:31:45,859 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:45,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:45,867 INFO L225 Difference]: With dead ends: 5420 [2021-05-21 21:31:45,867 INFO L226 Difference]: Without dead ends: 5345 [2021-05-21 21:31:45,868 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 803.6ms TimeCoverageRelationStatistics Valid=302, Invalid=3120, Unknown=0, NotChecked=0, Total=3422 [2021-05-21 21:31:45,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2021-05-21 21:31:45,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 4478. [2021-05-21 21:31:45,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 3.3716774625865535) internal successors, (15095), 4477 states have internal predecessors, (15095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:45,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 15095 transitions. [2021-05-21 21:31:45,935 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 15095 transitions. Word has length 39 [2021-05-21 21:31:45,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:45,935 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 15095 transitions. [2021-05-21 21:31:45,935 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 15095 transitions. [2021-05-21 21:31:45,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:45,940 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:45,940 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:45,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-05-21 21:31:45,940 INFO L430 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:45,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:45,941 INFO L82 PathProgramCache]: Analyzing trace with hash 250690024, now seen corresponding path program 314 times [2021-05-21 21:31:45,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:45,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984127001] [2021-05-21 21:31:45,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:46,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:46,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:46,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984127001] [2021-05-21 21:31:46,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984127001] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:46,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:46,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:46,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83611241] [2021-05-21 21:31:46,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:46,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:46,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:46,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:46,118 INFO L87 Difference]: Start difference. First operand 4478 states and 15095 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:47,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:47,881 INFO L93 Difference]: Finished difference Result 5579 states and 18644 transitions. [2021-05-21 21:31:47,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-21 21:31:47,881 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:47,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:47,890 INFO L225 Difference]: With dead ends: 5579 [2021-05-21 21:31:47,891 INFO L226 Difference]: Without dead ends: 5536 [2021-05-21 21:31:47,891 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1170.3ms TimeCoverageRelationStatistics Valid=440, Invalid=4816, Unknown=0, NotChecked=0, Total=5256 [2021-05-21 21:31:47,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5536 states. [2021-05-21 21:31:47,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5536 to 4487. [2021-05-21 21:31:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 4486 states have (on average 3.370263040570664) internal successors, (15119), 4486 states have internal predecessors, (15119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:47,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 15119 transitions. [2021-05-21 21:31:47,968 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 15119 transitions. Word has length 39 [2021-05-21 21:31:47,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:47,968 INFO L482 AbstractCegarLoop]: Abstraction has 4487 states and 15119 transitions. [2021-05-21 21:31:47,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 15119 transitions. [2021-05-21 21:31:47,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:47,974 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:47,975 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:47,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-05-21 21:31:47,975 INFO L430 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:47,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:47,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1529908278, now seen corresponding path program 315 times [2021-05-21 21:31:47,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:47,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291659147] [2021-05-21 21:31:47,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:48,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:48,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291659147] [2021-05-21 21:31:48,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291659147] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:48,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:48,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:48,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461127200] [2021-05-21 21:31:48,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:48,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:48,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:48,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:48,134 INFO L87 Difference]: Start difference. First operand 4487 states and 15119 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:49,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:49,879 INFO L93 Difference]: Finished difference Result 5567 states and 18606 transitions. [2021-05-21 21:31:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-21 21:31:49,879 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:49,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:49,888 INFO L225 Difference]: With dead ends: 5567 [2021-05-21 21:31:49,888 INFO L226 Difference]: Without dead ends: 5515 [2021-05-21 21:31:49,889 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 1154.3ms TimeCoverageRelationStatistics Valid=432, Invalid=4680, Unknown=0, NotChecked=0, Total=5112 [2021-05-21 21:31:49,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5515 states. [2021-05-21 21:31:49,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5515 to 4481. [2021-05-21 21:31:49,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4481 states, 4480 states have (on average 3.3712053571428573) internal successors, (15103), 4480 states have internal predecessors, (15103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:49,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4481 states to 4481 states and 15103 transitions. [2021-05-21 21:31:49,964 INFO L78 Accepts]: Start accepts. Automaton has 4481 states and 15103 transitions. Word has length 39 [2021-05-21 21:31:49,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:49,964 INFO L482 AbstractCegarLoop]: Abstraction has 4481 states and 15103 transitions. [2021-05-21 21:31:49,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:49,964 INFO L276 IsEmpty]: Start isEmpty. Operand 4481 states and 15103 transitions. [2021-05-21 21:31:49,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:49,969 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:49,969 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:49,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-05-21 21:31:49,970 INFO L430 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:49,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:49,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1286729206, now seen corresponding path program 316 times [2021-05-21 21:31:49,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:49,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675774520] [2021-05-21 21:31:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:50,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:50,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675774520] [2021-05-21 21:31:50,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675774520] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:50,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:50,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:50,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735040913] [2021-05-21 21:31:50,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:50,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:50,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:50,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:50,127 INFO L87 Difference]: Start difference. First operand 4481 states and 15103 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:51,492 INFO L93 Difference]: Finished difference Result 5564 states and 18560 transitions. [2021-05-21 21:31:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-21 21:31:51,493 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:51,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:51,501 INFO L225 Difference]: With dead ends: 5564 [2021-05-21 21:31:51,501 INFO L226 Difference]: Without dead ends: 5501 [2021-05-21 21:31:51,501 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 865.2ms TimeCoverageRelationStatistics Valid=329, Invalid=3453, Unknown=0, NotChecked=0, Total=3782 [2021-05-21 21:31:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5501 states. [2021-05-21 21:31:51,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5501 to 4481. [2021-05-21 21:31:51,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4481 states, 4480 states have (on average 3.3705357142857144) internal successors, (15100), 4480 states have internal predecessors, (15100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:51,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4481 states to 4481 states and 15100 transitions. [2021-05-21 21:31:51,566 INFO L78 Accepts]: Start accepts. Automaton has 4481 states and 15100 transitions. Word has length 39 [2021-05-21 21:31:51,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:51,566 INFO L482 AbstractCegarLoop]: Abstraction has 4481 states and 15100 transitions. [2021-05-21 21:31:51,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:51,566 INFO L276 IsEmpty]: Start isEmpty. Operand 4481 states and 15100 transitions. [2021-05-21 21:31:51,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:51,571 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:51,572 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:51,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-05-21 21:31:51,572 INFO L430 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:51,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:51,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1080596332, now seen corresponding path program 317 times [2021-05-21 21:31:51,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:51,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796866106] [2021-05-21 21:31:51,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:51,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:51,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:51,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796866106] [2021-05-21 21:31:51,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796866106] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:51,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:51,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:51,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302332940] [2021-05-21 21:31:51,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:51,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:51,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:51,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:51,728 INFO L87 Difference]: Start difference. First operand 4481 states and 15100 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:53,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:53,074 INFO L93 Difference]: Finished difference Result 5469 states and 18344 transitions. [2021-05-21 21:31:53,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-21 21:31:53,074 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:53,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:53,083 INFO L225 Difference]: With dead ends: 5469 [2021-05-21 21:31:53,083 INFO L226 Difference]: Without dead ends: 5393 [2021-05-21 21:31:53,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 834.3ms TimeCoverageRelationStatistics Valid=312, Invalid=3228, Unknown=0, NotChecked=0, Total=3540 [2021-05-21 21:31:53,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2021-05-21 21:31:53,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 4472. [2021-05-21 21:31:53,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4471 states have (on average 3.3726235741444865) internal successors, (15079), 4471 states have internal predecessors, (15079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:53,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 15079 transitions. [2021-05-21 21:31:53,156 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 15079 transitions. Word has length 39 [2021-05-21 21:31:53,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:53,156 INFO L482 AbstractCegarLoop]: Abstraction has 4472 states and 15079 transitions. [2021-05-21 21:31:53,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:53,156 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 15079 transitions. [2021-05-21 21:31:53,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:53,161 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:53,161 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:53,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-05-21 21:31:53,161 INFO L430 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:53,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:53,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1498841964, now seen corresponding path program 318 times [2021-05-21 21:31:53,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:53,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214135495] [2021-05-21 21:31:53,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:53,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:53,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214135495] [2021-05-21 21:31:53,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214135495] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:53,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:53,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:53,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774284445] [2021-05-21 21:31:53,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:53,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:53,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:53,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:53,323 INFO L87 Difference]: Start difference. First operand 4472 states and 15079 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:55,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:55,303 INFO L93 Difference]: Finished difference Result 5646 states and 18882 transitions. [2021-05-21 21:31:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-21 21:31:55,304 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:55,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:55,313 INFO L225 Difference]: With dead ends: 5646 [2021-05-21 21:31:55,313 INFO L226 Difference]: Without dead ends: 5509 [2021-05-21 21:31:55,313 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1533 ImplicationChecksByTransitivity, 1265.9ms TimeCoverageRelationStatistics Valid=438, Invalid=4964, Unknown=0, NotChecked=0, Total=5402 [2021-05-21 21:31:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5509 states. [2021-05-21 21:31:55,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5509 to 4478. [2021-05-21 21:31:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 3.3716774625865535) internal successors, (15095), 4477 states have internal predecessors, (15095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:55,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 15095 transitions. [2021-05-21 21:31:55,388 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 15095 transitions. Word has length 39 [2021-05-21 21:31:55,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:55,388 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 15095 transitions. [2021-05-21 21:31:55,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:55,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 15095 transitions. [2021-05-21 21:31:55,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:55,394 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:55,394 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:55,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-05-21 21:31:55,394 INFO L430 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:55,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:55,394 INFO L82 PathProgramCache]: Analyzing trace with hash 757889866, now seen corresponding path program 319 times [2021-05-21 21:31:55,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:55,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655310793] [2021-05-21 21:31:55,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:55,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:55,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655310793] [2021-05-21 21:31:55,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655310793] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:55,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:55,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:55,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170972693] [2021-05-21 21:31:55,554 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:55,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:55,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:55,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:55,554 INFO L87 Difference]: Start difference. First operand 4478 states and 15095 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:57,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:57,335 INFO L93 Difference]: Finished difference Result 5618 states and 18745 transitions. [2021-05-21 21:31:57,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-21 21:31:57,335 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:57,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:57,344 INFO L225 Difference]: With dead ends: 5618 [2021-05-21 21:31:57,344 INFO L226 Difference]: Without dead ends: 5554 [2021-05-21 21:31:57,345 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 1163.0ms TimeCoverageRelationStatistics Valid=429, Invalid=4683, Unknown=0, NotChecked=0, Total=5112 [2021-05-21 21:31:57,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5554 states. [2021-05-21 21:31:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5554 to 4487. [2021-05-21 21:31:57,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 4486 states have (on average 3.370263040570664) internal successors, (15119), 4486 states have internal predecessors, (15119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 15119 transitions. [2021-05-21 21:31:57,416 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 15119 transitions. Word has length 39 [2021-05-21 21:31:57,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:57,416 INFO L482 AbstractCegarLoop]: Abstraction has 4487 states and 15119 transitions. [2021-05-21 21:31:57,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:57,416 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 15119 transitions. [2021-05-21 21:31:57,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:57,422 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:57,422 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:57,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-05-21 21:31:57,422 INFO L430 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:57,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:57,422 INFO L82 PathProgramCache]: Analyzing trace with hash -779529364, now seen corresponding path program 320 times [2021-05-21 21:31:57,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:57,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783026336] [2021-05-21 21:31:57,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:57,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:57,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783026336] [2021-05-21 21:31:57,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783026336] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:57,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:57,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:57,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635338828] [2021-05-21 21:31:57,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:57,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:57,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:57,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:57,586 INFO L87 Difference]: Start difference. First operand 4487 states and 15119 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:58,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:31:58,973 INFO L93 Difference]: Finished difference Result 5558 states and 18563 transitions. [2021-05-21 21:31:58,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-21 21:31:58,973 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:31:58,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:31:58,982 INFO L225 Difference]: With dead ends: 5558 [2021-05-21 21:31:58,982 INFO L226 Difference]: Without dead ends: 5495 [2021-05-21 21:31:58,982 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 857.3ms TimeCoverageRelationStatistics Valid=307, Invalid=3233, Unknown=0, NotChecked=0, Total=3540 [2021-05-21 21:31:58,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5495 states. [2021-05-21 21:31:59,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5495 to 4487. [2021-05-21 21:31:59,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 4486 states have (on average 3.369594293357111) internal successors, (15116), 4486 states have internal predecessors, (15116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 15116 transitions. [2021-05-21 21:31:59,050 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 15116 transitions. Word has length 39 [2021-05-21 21:31:59,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:31:59,050 INFO L482 AbstractCegarLoop]: Abstraction has 4487 states and 15116 transitions. [2021-05-21 21:31:59,050 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:31:59,050 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 15116 transitions. [2021-05-21 21:31:59,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:31:59,056 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:31:59,056 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:31:59,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-05-21 21:31:59,056 INFO L430 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:31:59,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:31:59,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1587796174, now seen corresponding path program 321 times [2021-05-21 21:31:59,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:31:59,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024551953] [2021-05-21 21:31:59,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:31:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:31:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:31:59,212 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:31:59,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024551953] [2021-05-21 21:31:59,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024551953] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:31:59,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:31:59,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:31:59,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873275362] [2021-05-21 21:31:59,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:31:59,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:31:59,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:31:59,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:31:59,213 INFO L87 Difference]: Start difference. First operand 4487 states and 15116 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:00,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:00,556 INFO L93 Difference]: Finished difference Result 5577 states and 18609 transitions. [2021-05-21 21:32:00,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-21 21:32:00,556 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:00,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:00,565 INFO L225 Difference]: With dead ends: 5577 [2021-05-21 21:32:00,566 INFO L226 Difference]: Without dead ends: 5507 [2021-05-21 21:32:00,566 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 839.5ms TimeCoverageRelationStatistics Valid=318, Invalid=3342, Unknown=0, NotChecked=0, Total=3660 [2021-05-21 21:32:00,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5507 states. [2021-05-21 21:32:00,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5507 to 4484. [2021-05-21 21:32:00,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4484 states, 4483 states have (on average 3.370064688824448) internal successors, (15108), 4483 states have internal predecessors, (15108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:00,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 15108 transitions. [2021-05-21 21:32:00,643 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 15108 transitions. Word has length 39 [2021-05-21 21:32:00,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:00,643 INFO L482 AbstractCegarLoop]: Abstraction has 4484 states and 15108 transitions. [2021-05-21 21:32:00,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 15108 transitions. [2021-05-21 21:32:00,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:00,649 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:00,649 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:00,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-05-21 21:32:00,649 INFO L430 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:00,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:00,650 INFO L82 PathProgramCache]: Analyzing trace with hash -427888026, now seen corresponding path program 322 times [2021-05-21 21:32:00,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:00,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909308685] [2021-05-21 21:32:00,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:00,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:00,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909308685] [2021-05-21 21:32:00,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909308685] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:00,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:00,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:32:00,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150229572] [2021-05-21 21:32:00,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:32:00,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:00,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:32:00,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:32:00,797 INFO L87 Difference]: Start difference. First operand 4484 states and 15108 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:02,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:02,020 INFO L93 Difference]: Finished difference Result 5415 states and 18234 transitions. [2021-05-21 21:32:02,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-21 21:32:02,020 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:02,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:02,029 INFO L225 Difference]: With dead ends: 5415 [2021-05-21 21:32:02,029 INFO L226 Difference]: Without dead ends: 5339 [2021-05-21 21:32:02,029 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 755.7ms TimeCoverageRelationStatistics Valid=285, Invalid=2795, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:32:02,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5339 states. [2021-05-21 21:32:02,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5339 to 4498. [2021-05-21 21:32:02,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4498 states, 4497 states have (on average 3.3662441627751836) internal successors, (15138), 4497 states have internal predecessors, (15138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:02,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 15138 transitions. [2021-05-21 21:32:02,098 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 15138 transitions. Word has length 39 [2021-05-21 21:32:02,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:02,098 INFO L482 AbstractCegarLoop]: Abstraction has 4498 states and 15138 transitions. [2021-05-21 21:32:02,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:02,098 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 15138 transitions. [2021-05-21 21:32:02,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:02,103 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:02,103 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:02,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-05-21 21:32:02,103 INFO L430 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:02,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:02,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1975810360, now seen corresponding path program 323 times [2021-05-21 21:32:02,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:02,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457815590] [2021-05-21 21:32:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:02,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:02,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457815590] [2021-05-21 21:32:02,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457815590] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:02,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:02,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:02,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720381176] [2021-05-21 21:32:02,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:02,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:02,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:02,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:02,259 INFO L87 Difference]: Start difference. First operand 4498 states and 15138 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:03,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:03,561 INFO L93 Difference]: Finished difference Result 5454 states and 18306 transitions. [2021-05-21 21:32:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-21 21:32:03,562 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:03,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:03,570 INFO L225 Difference]: With dead ends: 5454 [2021-05-21 21:32:03,570 INFO L226 Difference]: Without dead ends: 5355 [2021-05-21 21:32:03,571 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 812.3ms TimeCoverageRelationStatistics Valid=301, Invalid=3121, Unknown=0, NotChecked=0, Total=3422 [2021-05-21 21:32:03,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5355 states. [2021-05-21 21:32:03,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5355 to 4466. [2021-05-21 21:32:03,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.374020156774916) internal successors, (15065), 4465 states have internal predecessors, (15065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:03,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15065 transitions. [2021-05-21 21:32:03,641 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15065 transitions. Word has length 39 [2021-05-21 21:32:03,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:03,642 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15065 transitions. [2021-05-21 21:32:03,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:03,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15065 transitions. [2021-05-21 21:32:03,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:03,647 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:03,647 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:03,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-05-21 21:32:03,647 INFO L430 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:03,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:03,648 INFO L82 PathProgramCache]: Analyzing trace with hash 2082179320, now seen corresponding path program 324 times [2021-05-21 21:32:03,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:03,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050380638] [2021-05-21 21:32:03,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:03,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:03,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050380638] [2021-05-21 21:32:03,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050380638] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:03,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:03,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:03,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779551965] [2021-05-21 21:32:03,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:03,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:03,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:03,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:03,831 INFO L87 Difference]: Start difference. First operand 4466 states and 15065 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:05,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:05,418 INFO L93 Difference]: Finished difference Result 5725 states and 19211 transitions. [2021-05-21 21:32:05,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-21 21:32:05,419 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:05,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:05,428 INFO L225 Difference]: With dead ends: 5725 [2021-05-21 21:32:05,428 INFO L226 Difference]: Without dead ends: 5658 [2021-05-21 21:32:05,429 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 1013.7ms TimeCoverageRelationStatistics Valid=426, Invalid=4130, Unknown=0, NotChecked=0, Total=4556 [2021-05-21 21:32:05,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2021-05-21 21:32:05,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 4476. [2021-05-21 21:32:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4475 states have (on average 3.373631284916201) internal successors, (15097), 4475 states have internal predecessors, (15097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:05,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 15097 transitions. [2021-05-21 21:32:05,500 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 15097 transitions. Word has length 39 [2021-05-21 21:32:05,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:05,500 INFO L482 AbstractCegarLoop]: Abstraction has 4476 states and 15097 transitions. [2021-05-21 21:32:05,500 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:05,500 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 15097 transitions. [2021-05-21 21:32:05,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:05,505 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:05,505 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:05,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-05-21 21:32:05,506 INFO L430 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:05,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:05,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1951584472, now seen corresponding path program 325 times [2021-05-21 21:32:05,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:05,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021174563] [2021-05-21 21:32:05,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:05,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:05,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021174563] [2021-05-21 21:32:05,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021174563] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:05,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:05,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:05,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39399239] [2021-05-21 21:32:05,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:05,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:05,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:05,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:05,668 INFO L87 Difference]: Start difference. First operand 4476 states and 15097 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:07,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:07,217 INFO L93 Difference]: Finished difference Result 5628 states and 18951 transitions. [2021-05-21 21:32:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-21 21:32:07,217 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:07,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:07,227 INFO L225 Difference]: With dead ends: 5628 [2021-05-21 21:32:07,227 INFO L226 Difference]: Without dead ends: 5565 [2021-05-21 21:32:07,227 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 1022.8ms TimeCoverageRelationStatistics Valid=419, Invalid=4003, Unknown=0, NotChecked=0, Total=4422 [2021-05-21 21:32:07,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2021-05-21 21:32:07,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 4476. [2021-05-21 21:32:07,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4475 states have (on average 3.372737430167598) internal successors, (15093), 4475 states have internal predecessors, (15093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:07,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 15093 transitions. [2021-05-21 21:32:07,304 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 15093 transitions. Word has length 39 [2021-05-21 21:32:07,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:07,304 INFO L482 AbstractCegarLoop]: Abstraction has 4476 states and 15093 transitions. [2021-05-21 21:32:07,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:07,304 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 15093 transitions. [2021-05-21 21:32:07,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:07,310 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:07,310 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:07,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-05-21 21:32:07,310 INFO L430 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:07,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:07,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1815905880, now seen corresponding path program 326 times [2021-05-21 21:32:07,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:07,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049066169] [2021-05-21 21:32:07,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:07,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:07,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049066169] [2021-05-21 21:32:07,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049066169] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:07,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:07,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:07,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191317805] [2021-05-21 21:32:07,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:07,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:07,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:07,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:07,471 INFO L87 Difference]: Start difference. First operand 4476 states and 15093 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:09,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:09,661 INFO L93 Difference]: Finished difference Result 5894 states and 19581 transitions. [2021-05-21 21:32:09,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-21 21:32:09,661 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:09,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:09,670 INFO L225 Difference]: With dead ends: 5894 [2021-05-21 21:32:09,670 INFO L226 Difference]: Without dead ends: 5812 [2021-05-21 21:32:09,670 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2323 ImplicationChecksByTransitivity, 1519.1ms TimeCoverageRelationStatistics Valid=628, Invalid=6854, Unknown=0, NotChecked=0, Total=7482 [2021-05-21 21:32:09,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2021-05-21 21:32:09,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 4491. [2021-05-21 21:32:09,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4491 states, 4490 states have (on average 3.3701559020044543) internal successors, (15132), 4490 states have internal predecessors, (15132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:09,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 15132 transitions. [2021-05-21 21:32:09,740 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 15132 transitions. Word has length 39 [2021-05-21 21:32:09,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:09,740 INFO L482 AbstractCegarLoop]: Abstraction has 4491 states and 15132 transitions. [2021-05-21 21:32:09,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:09,740 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 15132 transitions. [2021-05-21 21:32:09,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:09,746 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:09,746 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:09,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-05-21 21:32:09,746 INFO L430 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:09,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:09,746 INFO L82 PathProgramCache]: Analyzing trace with hash 35307578, now seen corresponding path program 327 times [2021-05-21 21:32:09,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:09,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851286658] [2021-05-21 21:32:09,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:09,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:09,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:09,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851286658] [2021-05-21 21:32:09,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851286658] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:09,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:09,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:09,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302721545] [2021-05-21 21:32:09,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:09,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:09,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:09,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:09,900 INFO L87 Difference]: Start difference. First operand 4491 states and 15132 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:12,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:12,012 INFO L93 Difference]: Finished difference Result 5796 states and 19352 transitions. [2021-05-21 21:32:12,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-21 21:32:12,013 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:12,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:12,021 INFO L225 Difference]: With dead ends: 5796 [2021-05-21 21:32:12,021 INFO L226 Difference]: Without dead ends: 5744 [2021-05-21 21:32:12,022 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2123 ImplicationChecksByTransitivity, 1429.3ms TimeCoverageRelationStatistics Valid=596, Invalid=6376, Unknown=0, NotChecked=0, Total=6972 [2021-05-21 21:32:12,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2021-05-21 21:32:12,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 4483. [2021-05-21 21:32:12,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4483 states, 4482 states have (on average 3.3717090584560463) internal successors, (15112), 4482 states have internal predecessors, (15112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:12,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4483 states to 4483 states and 15112 transitions. [2021-05-21 21:32:12,087 INFO L78 Accepts]: Start accepts. Automaton has 4483 states and 15112 transitions. Word has length 39 [2021-05-21 21:32:12,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:12,087 INFO L482 AbstractCegarLoop]: Abstraction has 4483 states and 15112 transitions. [2021-05-21 21:32:12,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:12,088 INFO L276 IsEmpty]: Start isEmpty. Operand 4483 states and 15112 transitions. [2021-05-21 21:32:12,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:12,093 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:12,093 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:12,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-05-21 21:32:12,093 INFO L430 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:12,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:12,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1560577846, now seen corresponding path program 328 times [2021-05-21 21:32:12,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:12,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566421684] [2021-05-21 21:32:12,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:12,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:12,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566421684] [2021-05-21 21:32:12,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566421684] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:12,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:12,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:12,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005156977] [2021-05-21 21:32:12,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:12,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:12,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:12,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:12,247 INFO L87 Difference]: Start difference. First operand 4483 states and 15112 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:13,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:13,831 INFO L93 Difference]: Finished difference Result 5765 states and 19249 transitions. [2021-05-21 21:32:13,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-21 21:32:13,832 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:13,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:13,841 INFO L225 Difference]: With dead ends: 5765 [2021-05-21 21:32:13,841 INFO L226 Difference]: Without dead ends: 5710 [2021-05-21 21:32:13,841 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 1060.0ms TimeCoverageRelationStatistics Valid=455, Invalid=4375, Unknown=0, NotChecked=0, Total=4830 [2021-05-21 21:32:13,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5710 states. [2021-05-21 21:32:13,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5710 to 4485. [2021-05-21 21:32:13,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4485 states, 4484 states have (on average 3.3708742194469226) internal successors, (15115), 4484 states have internal predecessors, (15115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:13,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4485 states to 4485 states and 15115 transitions. [2021-05-21 21:32:13,935 INFO L78 Accepts]: Start accepts. Automaton has 4485 states and 15115 transitions. Word has length 39 [2021-05-21 21:32:13,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:13,935 INFO L482 AbstractCegarLoop]: Abstraction has 4485 states and 15115 transitions. [2021-05-21 21:32:13,935 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:13,936 INFO L276 IsEmpty]: Start isEmpty. Operand 4485 states and 15115 transitions. [2021-05-21 21:32:13,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:13,941 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:13,942 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:13,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-05-21 21:32:13,942 INFO L430 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:13,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:13,942 INFO L82 PathProgramCache]: Analyzing trace with hash -387925624, now seen corresponding path program 329 times [2021-05-21 21:32:13,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:13,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698416071] [2021-05-21 21:32:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:14,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:14,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:14,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698416071] [2021-05-21 21:32:14,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698416071] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:14,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:14,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:14,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84559829] [2021-05-21 21:32:14,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:14,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:14,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:14,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:14,100 INFO L87 Difference]: Start difference. First operand 4485 states and 15115 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:15,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:15,593 INFO L93 Difference]: Finished difference Result 5700 states and 19097 transitions. [2021-05-21 21:32:15,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-21 21:32:15,593 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:15,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:15,602 INFO L225 Difference]: With dead ends: 5700 [2021-05-21 21:32:15,602 INFO L226 Difference]: Without dead ends: 5654 [2021-05-21 21:32:15,603 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 993.6ms TimeCoverageRelationStatistics Valid=425, Invalid=3997, Unknown=0, NotChecked=0, Total=4422 [2021-05-21 21:32:15,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2021-05-21 21:32:15,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 4489. [2021-05-21 21:32:15,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4489 states, 4488 states have (on average 3.3696524064171123) internal successors, (15123), 4488 states have internal predecessors, (15123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:15,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 15123 transitions. [2021-05-21 21:32:15,675 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 15123 transitions. Word has length 39 [2021-05-21 21:32:15,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:15,675 INFO L482 AbstractCegarLoop]: Abstraction has 4489 states and 15123 transitions. [2021-05-21 21:32:15,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:15,675 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 15123 transitions. [2021-05-21 21:32:15,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:15,681 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:15,681 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:15,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-05-21 21:32:15,681 INFO L430 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:15,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:15,681 INFO L82 PathProgramCache]: Analyzing trace with hash -635391786, now seen corresponding path program 330 times [2021-05-21 21:32:15,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:15,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710560476] [2021-05-21 21:32:15,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:15,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:15,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:15,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710560476] [2021-05-21 21:32:15,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710560476] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:15,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:15,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:15,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845848464] [2021-05-21 21:32:15,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:15,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:15,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:15,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:15,847 INFO L87 Difference]: Start difference. First operand 4489 states and 15123 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:17,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:17,442 INFO L93 Difference]: Finished difference Result 5672 states and 19046 transitions. [2021-05-21 21:32:17,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-21 21:32:17,442 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:17,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:17,451 INFO L225 Difference]: With dead ends: 5672 [2021-05-21 21:32:17,452 INFO L226 Difference]: Without dead ends: 5623 [2021-05-21 21:32:17,452 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1065.0ms TimeCoverageRelationStatistics Valid=437, Invalid=4119, Unknown=0, NotChecked=0, Total=4556 [2021-05-21 21:32:17,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5623 states. [2021-05-21 21:32:17,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5623 to 4479. [2021-05-21 21:32:17,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4479 states, 4478 states have (on average 3.37293434569004) internal successors, (15104), 4478 states have internal predecessors, (15104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4479 states to 4479 states and 15104 transitions. [2021-05-21 21:32:17,527 INFO L78 Accepts]: Start accepts. Automaton has 4479 states and 15104 transitions. Word has length 39 [2021-05-21 21:32:17,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:17,527 INFO L482 AbstractCegarLoop]: Abstraction has 4479 states and 15104 transitions. [2021-05-21 21:32:17,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:17,527 INFO L276 IsEmpty]: Start isEmpty. Operand 4479 states and 15104 transitions. [2021-05-21 21:32:17,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:17,533 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:17,533 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:17,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-05-21 21:32:17,533 INFO L430 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:17,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:17,533 INFO L82 PathProgramCache]: Analyzing trace with hash 823147510, now seen corresponding path program 331 times [2021-05-21 21:32:17,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:17,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422904313] [2021-05-21 21:32:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:17,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:17,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422904313] [2021-05-21 21:32:17,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422904313] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:17,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:17,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:17,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232873412] [2021-05-21 21:32:17,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:17,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:17,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:17,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:17,695 INFO L87 Difference]: Start difference. First operand 4479 states and 15104 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:19,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:19,297 INFO L93 Difference]: Finished difference Result 5771 states and 19335 transitions. [2021-05-21 21:32:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-21 21:32:19,298 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:19,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:19,308 INFO L225 Difference]: With dead ends: 5771 [2021-05-21 21:32:19,308 INFO L226 Difference]: Without dead ends: 5704 [2021-05-21 21:32:19,308 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 1003.9ms TimeCoverageRelationStatistics Valid=410, Invalid=4146, Unknown=0, NotChecked=0, Total=4556 [2021-05-21 21:32:19,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2021-05-21 21:32:19,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 4497. [2021-05-21 21:32:19,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4497 states, 4496 states have (on average 3.3687722419928825) internal successors, (15146), 4496 states have internal predecessors, (15146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 15146 transitions. [2021-05-21 21:32:19,380 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 15146 transitions. Word has length 39 [2021-05-21 21:32:19,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:19,380 INFO L482 AbstractCegarLoop]: Abstraction has 4497 states and 15146 transitions. [2021-05-21 21:32:19,380 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:19,380 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 15146 transitions. [2021-05-21 21:32:19,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:19,386 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:19,386 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:19,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-05-21 21:32:19,386 INFO L430 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:19,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:19,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1181217718, now seen corresponding path program 332 times [2021-05-21 21:32:19,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:19,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475039220] [2021-05-21 21:32:19,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:19,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:19,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:19,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475039220] [2021-05-21 21:32:19,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475039220] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:19,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:19,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:19,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102071490] [2021-05-21 21:32:19,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:19,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:19,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:19,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:19,545 INFO L87 Difference]: Start difference. First operand 4497 states and 15146 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:21,056 INFO L93 Difference]: Finished difference Result 5733 states and 19210 transitions. [2021-05-21 21:32:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-21 21:32:21,056 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:21,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:21,065 INFO L225 Difference]: With dead ends: 5733 [2021-05-21 21:32:21,066 INFO L226 Difference]: Without dead ends: 5658 [2021-05-21 21:32:21,066 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 971.5ms TimeCoverageRelationStatistics Valid=403, Invalid=4019, Unknown=0, NotChecked=0, Total=4422 [2021-05-21 21:32:21,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2021-05-21 21:32:21,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 4497. [2021-05-21 21:32:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4497 states, 4496 states have (on average 3.367437722419929) internal successors, (15140), 4496 states have internal predecessors, (15140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 15140 transitions. [2021-05-21 21:32:21,143 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 15140 transitions. Word has length 39 [2021-05-21 21:32:21,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:21,143 INFO L482 AbstractCegarLoop]: Abstraction has 4497 states and 15140 transitions. [2021-05-21 21:32:21,143 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:21,143 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 15140 transitions. [2021-05-21 21:32:21,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:21,148 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:21,148 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:21,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-05-21 21:32:21,149 INFO L430 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:21,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:21,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1485444524, now seen corresponding path program 333 times [2021-05-21 21:32:21,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:21,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771109510] [2021-05-21 21:32:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:21,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:21,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:21,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771109510] [2021-05-21 21:32:21,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771109510] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:21,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:21,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:21,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906871575] [2021-05-21 21:32:21,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:21,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:21,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:21,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:21,342 INFO L87 Difference]: Start difference. First operand 4497 states and 15140 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:23,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:23,503 INFO L93 Difference]: Finished difference Result 5901 states and 19622 transitions. [2021-05-21 21:32:23,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-21 21:32:23,503 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:23,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:23,512 INFO L225 Difference]: With dead ends: 5901 [2021-05-21 21:32:23,512 INFO L226 Difference]: Without dead ends: 5809 [2021-05-21 21:32:23,512 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 1467.3ms TimeCoverageRelationStatistics Valid=605, Invalid=6877, Unknown=0, NotChecked=0, Total=7482 [2021-05-21 21:32:23,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5809 states. [2021-05-21 21:32:23,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5809 to 4502. [2021-05-21 21:32:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4502 states, 4501 states have (on average 3.366807376138636) internal successors, (15154), 4501 states have internal predecessors, (15154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:23,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 15154 transitions. [2021-05-21 21:32:23,581 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 15154 transitions. Word has length 39 [2021-05-21 21:32:23,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:23,581 INFO L482 AbstractCegarLoop]: Abstraction has 4502 states and 15154 transitions. [2021-05-21 21:32:23,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:23,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 15154 transitions. [2021-05-21 21:32:23,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:23,587 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:23,587 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:23,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-05-21 21:32:23,587 INFO L430 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:23,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:23,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1028924470, now seen corresponding path program 334 times [2021-05-21 21:32:23,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:23,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266489535] [2021-05-21 21:32:23,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:23,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:23,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:23,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266489535] [2021-05-21 21:32:23,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266489535] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:23,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:23,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:23,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760613270] [2021-05-21 21:32:23,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:23,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:23,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:23,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:23,743 INFO L87 Difference]: Start difference. First operand 4502 states and 15154 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:25,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:25,791 INFO L93 Difference]: Finished difference Result 5840 states and 19473 transitions. [2021-05-21 21:32:25,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-21 21:32:25,792 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:25,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:25,801 INFO L225 Difference]: With dead ends: 5840 [2021-05-21 21:32:25,801 INFO L226 Difference]: Without dead ends: 5788 [2021-05-21 21:32:25,801 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2065 ImplicationChecksByTransitivity, 1377.5ms TimeCoverageRelationStatistics Valid=564, Invalid=6242, Unknown=0, NotChecked=0, Total=6806 [2021-05-21 21:32:25,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2021-05-21 21:32:25,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 4496. [2021-05-21 21:32:25,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4496 states, 4495 states have (on average 3.367741935483871) internal successors, (15138), 4495 states have internal predecessors, (15138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:25,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4496 states to 4496 states and 15138 transitions. [2021-05-21 21:32:25,872 INFO L78 Accepts]: Start accepts. Automaton has 4496 states and 15138 transitions. Word has length 39 [2021-05-21 21:32:25,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:25,872 INFO L482 AbstractCegarLoop]: Abstraction has 4496 states and 15138 transitions. [2021-05-21 21:32:25,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand 4496 states and 15138 transitions. [2021-05-21 21:32:25,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:25,877 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:25,877 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:25,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-05-21 21:32:25,877 INFO L430 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:25,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:25,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1272103542, now seen corresponding path program 335 times [2021-05-21 21:32:25,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:25,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591613639] [2021-05-21 21:32:25,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:26,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:26,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591613639] [2021-05-21 21:32:26,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591613639] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:26,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:26,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:26,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126395879] [2021-05-21 21:32:26,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:26,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:26,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:26,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:26,034 INFO L87 Difference]: Start difference. First operand 4496 states and 15138 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:27,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:27,614 INFO L93 Difference]: Finished difference Result 5854 states and 19472 transitions. [2021-05-21 21:32:27,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-21 21:32:27,614 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:27,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:27,623 INFO L225 Difference]: With dead ends: 5854 [2021-05-21 21:32:27,623 INFO L226 Difference]: Without dead ends: 5791 [2021-05-21 21:32:27,624 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 1013.5ms TimeCoverageRelationStatistics Valid=431, Invalid=4399, Unknown=0, NotChecked=0, Total=4830 [2021-05-21 21:32:27,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5791 states. [2021-05-21 21:32:27,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5791 to 4499. [2021-05-21 21:32:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4499 states, 4498 states have (on average 3.366607381058248) internal successors, (15143), 4498 states have internal predecessors, (15143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4499 states to 4499 states and 15143 transitions. [2021-05-21 21:32:27,697 INFO L78 Accepts]: Start accepts. Automaton has 4499 states and 15143 transitions. Word has length 39 [2021-05-21 21:32:27,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:27,697 INFO L482 AbstractCegarLoop]: Abstraction has 4499 states and 15143 transitions. [2021-05-21 21:32:27,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:27,698 INFO L276 IsEmpty]: Start isEmpty. Operand 4499 states and 15143 transitions. [2021-05-21 21:32:27,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:27,703 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:27,703 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:27,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-05-21 21:32:27,703 INFO L430 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:27,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:27,703 INFO L82 PathProgramCache]: Analyzing trace with hash -655538216, now seen corresponding path program 336 times [2021-05-21 21:32:27,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:27,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357867231] [2021-05-21 21:32:27,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:27,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:27,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357867231] [2021-05-21 21:32:27,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357867231] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:27,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:27,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:27,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406855922] [2021-05-21 21:32:27,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:27,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:27,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:27,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:27,858 INFO L87 Difference]: Start difference. First operand 4499 states and 15143 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:29,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:29,380 INFO L93 Difference]: Finished difference Result 5745 states and 19219 transitions. [2021-05-21 21:32:29,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-21 21:32:29,380 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:29,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:29,389 INFO L225 Difference]: With dead ends: 5745 [2021-05-21 21:32:29,389 INFO L226 Difference]: Without dead ends: 5699 [2021-05-21 21:32:29,390 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 972.3ms TimeCoverageRelationStatistics Valid=401, Invalid=4021, Unknown=0, NotChecked=0, Total=4422 [2021-05-21 21:32:29,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2021-05-21 21:32:29,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 4506. [2021-05-21 21:32:29,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4505 states have (on average 3.364705882352941) internal successors, (15158), 4505 states have internal predecessors, (15158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:29,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 15158 transitions. [2021-05-21 21:32:29,456 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 15158 transitions. Word has length 39 [2021-05-21 21:32:29,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:29,456 INFO L482 AbstractCegarLoop]: Abstraction has 4506 states and 15158 transitions. [2021-05-21 21:32:29,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:29,456 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 15158 transitions. [2021-05-21 21:32:29,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:29,461 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:29,461 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:29,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-05-21 21:32:29,461 INFO L430 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:29,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:29,461 INFO L82 PathProgramCache]: Analyzing trace with hash -2090605706, now seen corresponding path program 337 times [2021-05-21 21:32:29,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:29,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45247848] [2021-05-21 21:32:29,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:29,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:29,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45247848] [2021-05-21 21:32:29,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45247848] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:29,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:29,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:29,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535474921] [2021-05-21 21:32:29,618 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:29,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:29,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:29,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:29,619 INFO L87 Difference]: Start difference. First operand 4506 states and 15158 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:31,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:31,169 INFO L93 Difference]: Finished difference Result 5675 states and 19008 transitions. [2021-05-21 21:32:31,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-21 21:32:31,169 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:31,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:31,178 INFO L225 Difference]: With dead ends: 5675 [2021-05-21 21:32:31,178 INFO L226 Difference]: Without dead ends: 5614 [2021-05-21 21:32:31,179 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 975.1ms TimeCoverageRelationStatistics Valid=384, Invalid=3906, Unknown=0, NotChecked=0, Total=4290 [2021-05-21 21:32:31,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5614 states. [2021-05-21 21:32:31,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5614 to 4490. [2021-05-21 21:32:31,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4489 states have (on average 3.369570060147026) internal successors, (15126), 4489 states have internal predecessors, (15126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:31,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 15126 transitions. [2021-05-21 21:32:31,256 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 15126 transitions. Word has length 39 [2021-05-21 21:32:31,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:31,256 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 15126 transitions. [2021-05-21 21:32:31,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:31,256 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 15126 transitions. [2021-05-21 21:32:31,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:31,262 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:31,262 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:31,262 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-05-21 21:32:31,262 INFO L430 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:31,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:31,263 INFO L82 PathProgramCache]: Analyzing trace with hash -82808552, now seen corresponding path program 338 times [2021-05-21 21:32:31,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:31,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964373802] [2021-05-21 21:32:31,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:31,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:31,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:31,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964373802] [2021-05-21 21:32:31,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964373802] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:31,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:31,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:31,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911241318] [2021-05-21 21:32:31,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:31,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:31,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:31,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:31,451 INFO L87 Difference]: Start difference. First operand 4490 states and 15126 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:32,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:32,950 INFO L93 Difference]: Finished difference Result 5704 states and 19279 transitions. [2021-05-21 21:32:32,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-21 21:32:32,950 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:32,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:32,959 INFO L225 Difference]: With dead ends: 5704 [2021-05-21 21:32:32,959 INFO L226 Difference]: Without dead ends: 5641 [2021-05-21 21:32:32,959 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 934.7ms TimeCoverageRelationStatistics Valid=374, Invalid=3658, Unknown=0, NotChecked=0, Total=4032 [2021-05-21 21:32:32,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5641 states. [2021-05-21 21:32:33,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5641 to 4490. [2021-05-21 21:32:33,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4489 states have (on average 3.3686789930942305) internal successors, (15122), 4489 states have internal predecessors, (15122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:33,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 15122 transitions. [2021-05-21 21:32:33,030 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 15122 transitions. Word has length 39 [2021-05-21 21:32:33,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:33,030 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 15122 transitions. [2021-05-21 21:32:33,030 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:33,030 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 15122 transitions. [2021-05-21 21:32:33,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:33,035 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:33,035 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:33,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-05-21 21:32:33,035 INFO L430 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:33,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:33,036 INFO L82 PathProgramCache]: Analyzing trace with hash -328300650, now seen corresponding path program 339 times [2021-05-21 21:32:33,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:33,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783618923] [2021-05-21 21:32:33,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:33,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:33,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783618923] [2021-05-21 21:32:33,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783618923] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:33,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:33,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:33,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026016832] [2021-05-21 21:32:33,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:33,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:33,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:33,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:33,195 INFO L87 Difference]: Start difference. First operand 4490 states and 15122 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:34,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:34,752 INFO L93 Difference]: Finished difference Result 5775 states and 19452 transitions. [2021-05-21 21:32:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-21 21:32:34,752 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:34,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:34,762 INFO L225 Difference]: With dead ends: 5775 [2021-05-21 21:32:34,762 INFO L226 Difference]: Without dead ends: 5700 [2021-05-21 21:32:34,762 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 941.2ms TimeCoverageRelationStatistics Valid=374, Invalid=3658, Unknown=0, NotChecked=0, Total=4032 [2021-05-21 21:32:34,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2021-05-21 21:32:34,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 4478. [2021-05-21 21:32:34,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 3.371007371007371) internal successors, (15092), 4477 states have internal predecessors, (15092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:34,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 15092 transitions. [2021-05-21 21:32:34,838 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 15092 transitions. Word has length 39 [2021-05-21 21:32:34,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:34,838 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 15092 transitions. [2021-05-21 21:32:34,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:34,838 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 15092 transitions. [2021-05-21 21:32:34,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:34,843 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:34,843 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:34,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-05-21 21:32:34,844 INFO L430 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:34,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:34,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1512005288, now seen corresponding path program 340 times [2021-05-21 21:32:34,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:34,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067028859] [2021-05-21 21:32:34,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:35,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:35,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067028859] [2021-05-21 21:32:35,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067028859] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:35,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:35,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:35,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672880603] [2021-05-21 21:32:35,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:35,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:35,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:35,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:35,003 INFO L87 Difference]: Start difference. First operand 4478 states and 15092 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:36,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:36,702 INFO L93 Difference]: Finished difference Result 6319 states and 21196 transitions. [2021-05-21 21:32:36,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-21 21:32:36,703 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:36,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:36,713 INFO L225 Difference]: With dead ends: 6319 [2021-05-21 21:32:36,713 INFO L226 Difference]: Without dead ends: 6264 [2021-05-21 21:32:36,713 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 951.4ms TimeCoverageRelationStatistics Valid=396, Invalid=4026, Unknown=0, NotChecked=0, Total=4422 [2021-05-21 21:32:36,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6264 states. [2021-05-21 21:32:36,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6264 to 4484. [2021-05-21 21:32:36,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4484 states, 4483 states have (on average 3.36939549408878) internal successors, (15105), 4483 states have internal predecessors, (15105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:36,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 15105 transitions. [2021-05-21 21:32:36,791 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 15105 transitions. Word has length 39 [2021-05-21 21:32:36,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:36,791 INFO L482 AbstractCegarLoop]: Abstraction has 4484 states and 15105 transitions. [2021-05-21 21:32:36,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:36,791 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 15105 transitions. [2021-05-21 21:32:36,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:36,797 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:36,797 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:36,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-05-21 21:32:36,797 INFO L430 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:36,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:36,798 INFO L82 PathProgramCache]: Analyzing trace with hash -174947274, now seen corresponding path program 341 times [2021-05-21 21:32:36,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:36,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315608757] [2021-05-21 21:32:36,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:36,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:36,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:36,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315608757] [2021-05-21 21:32:36,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315608757] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:36,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:36,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:36,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404548593] [2021-05-21 21:32:36,962 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:36,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:36,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:36,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:36,963 INFO L87 Difference]: Start difference. First operand 4484 states and 15105 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:38,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:38,645 INFO L93 Difference]: Finished difference Result 6307 states and 21158 transitions. [2021-05-21 21:32:38,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-21 21:32:38,645 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:38,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:38,656 INFO L225 Difference]: With dead ends: 6307 [2021-05-21 21:32:38,656 INFO L226 Difference]: Without dead ends: 6234 [2021-05-21 21:32:38,657 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 960.5ms TimeCoverageRelationStatistics Valid=396, Invalid=4026, Unknown=0, NotChecked=0, Total=4422 [2021-05-21 21:32:38,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2021-05-21 21:32:38,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 4474. [2021-05-21 21:32:38,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4473 states have (on average 3.3722334004024144) internal successors, (15084), 4473 states have internal predecessors, (15084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:38,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 15084 transitions. [2021-05-21 21:32:38,736 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 15084 transitions. Word has length 39 [2021-05-21 21:32:38,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:38,736 INFO L482 AbstractCegarLoop]: Abstraction has 4474 states and 15084 transitions. [2021-05-21 21:32:38,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:38,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 15084 transitions. [2021-05-21 21:32:38,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:38,742 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:38,742 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:38,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-05-21 21:32:38,742 INFO L430 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:38,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:38,742 INFO L82 PathProgramCache]: Analyzing trace with hash -544522038, now seen corresponding path program 342 times [2021-05-21 21:32:38,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:38,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050720587] [2021-05-21 21:32:38,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:38,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:38,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050720587] [2021-05-21 21:32:38,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050720587] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:38,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:38,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:38,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931437666] [2021-05-21 21:32:38,902 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:38,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:38,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:38,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:38,902 INFO L87 Difference]: Start difference. First operand 4474 states and 15084 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:41,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:41,680 INFO L93 Difference]: Finished difference Result 8942 states and 29698 transitions. [2021-05-21 21:32:41,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-21 21:32:41,680 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:41,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:41,712 INFO L225 Difference]: With dead ends: 8942 [2021-05-21 21:32:41,713 INFO L226 Difference]: Without dead ends: 8742 [2021-05-21 21:32:41,713 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3514 ImplicationChecksByTransitivity, 1730.8ms TimeCoverageRelationStatistics Valid=797, Invalid=9709, Unknown=0, NotChecked=0, Total=10506 [2021-05-21 21:32:41,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8742 states. [2021-05-21 21:32:41,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8742 to 5078. [2021-05-21 21:32:41,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5078 states, 5077 states have (on average 3.3890092574354935) internal successors, (17206), 5077 states have internal predecessors, (17206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 17206 transitions. [2021-05-21 21:32:41,806 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 17206 transitions. Word has length 39 [2021-05-21 21:32:41,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:41,806 INFO L482 AbstractCegarLoop]: Abstraction has 5078 states and 17206 transitions. [2021-05-21 21:32:41,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:41,806 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 17206 transitions. [2021-05-21 21:32:41,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:41,813 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:41,813 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:41,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-05-21 21:32:41,813 INFO L430 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:41,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:41,813 INFO L82 PathProgramCache]: Analyzing trace with hash 628130184, now seen corresponding path program 343 times [2021-05-21 21:32:41,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:41,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062039818] [2021-05-21 21:32:41,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:41,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:41,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:41,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062039818] [2021-05-21 21:32:41,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062039818] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:41,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:41,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:41,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551278188] [2021-05-21 21:32:41,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:41,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:41,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:41,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:41,971 INFO L87 Difference]: Start difference. First operand 5078 states and 17206 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:44,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:44,634 INFO L93 Difference]: Finished difference Result 9109 states and 30181 transitions. [2021-05-21 21:32:44,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-21 21:32:44,634 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:44,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:44,648 INFO L225 Difference]: With dead ends: 9109 [2021-05-21 21:32:44,649 INFO L226 Difference]: Without dead ends: 8872 [2021-05-21 21:32:44,649 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3112 ImplicationChecksByTransitivity, 1662.0ms TimeCoverageRelationStatistics Valid=751, Invalid=8755, Unknown=0, NotChecked=0, Total=9506 [2021-05-21 21:32:44,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8872 states. [2021-05-21 21:32:44,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8872 to 5058. [2021-05-21 21:32:44,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5058 states, 5057 states have (on average 3.3925252125766265) internal successors, (17156), 5057 states have internal predecessors, (17156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:44,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5058 states to 5058 states and 17156 transitions. [2021-05-21 21:32:44,744 INFO L78 Accepts]: Start accepts. Automaton has 5058 states and 17156 transitions. Word has length 39 [2021-05-21 21:32:44,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:44,745 INFO L482 AbstractCegarLoop]: Abstraction has 5058 states and 17156 transitions. [2021-05-21 21:32:44,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:44,745 INFO L276 IsEmpty]: Start isEmpty. Operand 5058 states and 17156 transitions. [2021-05-21 21:32:44,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:44,751 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:44,751 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:44,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-05-21 21:32:44,751 INFO L430 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:44,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:44,751 INFO L82 PathProgramCache]: Analyzing trace with hash 560385304, now seen corresponding path program 344 times [2021-05-21 21:32:44,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:44,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213312370] [2021-05-21 21:32:44,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:44,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:44,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213312370] [2021-05-21 21:32:44,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213312370] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:44,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:44,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:44,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230972472] [2021-05-21 21:32:44,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:44,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:44,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:44,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:44,906 INFO L87 Difference]: Start difference. First operand 5058 states and 17156 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:47,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:47,625 INFO L93 Difference]: Finished difference Result 8857 states and 29514 transitions. [2021-05-21 21:32:47,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-21 21:32:47,625 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:47,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:47,639 INFO L225 Difference]: With dead ends: 8857 [2021-05-21 21:32:47,640 INFO L226 Difference]: Without dead ends: 8725 [2021-05-21 21:32:47,640 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3353 ImplicationChecksByTransitivity, 1699.6ms TimeCoverageRelationStatistics Valid=761, Invalid=9339, Unknown=0, NotChecked=0, Total=10100 [2021-05-21 21:32:47,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8725 states. [2021-05-21 21:32:47,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8725 to 5099. [2021-05-21 21:32:47,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5099 states, 5098 states have (on average 3.3856414280109846) internal successors, (17260), 5098 states have internal predecessors, (17260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:47,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 17260 transitions. [2021-05-21 21:32:47,736 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 17260 transitions. Word has length 39 [2021-05-21 21:32:47,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:47,737 INFO L482 AbstractCegarLoop]: Abstraction has 5099 states and 17260 transitions. [2021-05-21 21:32:47,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 17260 transitions. [2021-05-21 21:32:47,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:47,743 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:47,743 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:47,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-05-21 21:32:47,743 INFO L430 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:47,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:47,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1367256454, now seen corresponding path program 345 times [2021-05-21 21:32:47,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:47,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014235158] [2021-05-21 21:32:47,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:47,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:47,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:47,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014235158] [2021-05-21 21:32:47,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014235158] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:47,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:47,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:47,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96836393] [2021-05-21 21:32:47,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:47,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:47,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:47,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:47,899 INFO L87 Difference]: Start difference. First operand 5099 states and 17260 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:50,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:50,504 INFO L93 Difference]: Finished difference Result 8987 states and 29894 transitions. [2021-05-21 21:32:50,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-21 21:32:50,504 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:50,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:50,519 INFO L225 Difference]: With dead ends: 8987 [2021-05-21 21:32:50,519 INFO L226 Difference]: Without dead ends: 8822 [2021-05-21 21:32:50,519 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2960 ImplicationChecksByTransitivity, 1599.2ms TimeCoverageRelationStatistics Valid=715, Invalid=8405, Unknown=0, NotChecked=0, Total=9120 [2021-05-21 21:32:50,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8822 states. [2021-05-21 21:32:50,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8822 to 5081. [2021-05-21 21:32:50,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5081 states, 5080 states have (on average 3.3897637795275593) internal successors, (17220), 5080 states have internal predecessors, (17220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:50,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5081 states to 5081 states and 17220 transitions. [2021-05-21 21:32:50,618 INFO L78 Accepts]: Start accepts. Automaton has 5081 states and 17220 transitions. Word has length 39 [2021-05-21 21:32:50,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:50,618 INFO L482 AbstractCegarLoop]: Abstraction has 5081 states and 17220 transitions. [2021-05-21 21:32:50,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:50,619 INFO L276 IsEmpty]: Start isEmpty. Operand 5081 states and 17220 transitions. [2021-05-21 21:32:50,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:50,625 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:50,625 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:50,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-05-21 21:32:50,625 INFO L430 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:50,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:50,625 INFO L82 PathProgramCache]: Analyzing trace with hash 699557460, now seen corresponding path program 346 times [2021-05-21 21:32:50,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:50,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617841103] [2021-05-21 21:32:50,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:50,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:50,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617841103] [2021-05-21 21:32:50,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617841103] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:50,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:50,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:50,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677828329] [2021-05-21 21:32:50,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:50,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:50,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:50,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:50,784 INFO L87 Difference]: Start difference. First operand 5081 states and 17220 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:52,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:52,988 INFO L93 Difference]: Finished difference Result 6596 states and 21948 transitions. [2021-05-21 21:32:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-21 21:32:52,988 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:52,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:52,998 INFO L225 Difference]: With dead ends: 6596 [2021-05-21 21:32:52,999 INFO L226 Difference]: Without dead ends: 6462 [2021-05-21 21:32:52,999 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2184 ImplicationChecksByTransitivity, 1500.1ms TimeCoverageRelationStatistics Valid=579, Invalid=6561, Unknown=0, NotChecked=0, Total=7140 [2021-05-21 21:32:53,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6462 states. [2021-05-21 21:32:53,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6462 to 5094. [2021-05-21 21:32:53,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 5093 states have (on average 3.389554290202238) internal successors, (17263), 5093 states have internal predecessors, (17263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:53,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 17263 transitions. [2021-05-21 21:32:53,081 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 17263 transitions. Word has length 39 [2021-05-21 21:32:53,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:53,081 INFO L482 AbstractCegarLoop]: Abstraction has 5094 states and 17263 transitions. [2021-05-21 21:32:53,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:53,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 17263 transitions. [2021-05-21 21:32:53,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:53,088 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:53,088 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:53,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-05-21 21:32:53,088 INFO L430 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:53,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:53,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1618041030, now seen corresponding path program 347 times [2021-05-21 21:32:53,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:53,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723851214] [2021-05-21 21:32:53,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:53,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:53,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723851214] [2021-05-21 21:32:53,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723851214] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:53,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:53,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:53,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200680768] [2021-05-21 21:32:53,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:53,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:53,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:53,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:53,247 INFO L87 Difference]: Start difference. First operand 5094 states and 17263 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:54,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:54,768 INFO L93 Difference]: Finished difference Result 6368 states and 21399 transitions. [2021-05-21 21:32:54,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-21 21:32:54,768 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:54,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:54,779 INFO L225 Difference]: With dead ends: 6368 [2021-05-21 21:32:54,779 INFO L226 Difference]: Without dead ends: 6325 [2021-05-21 21:32:54,779 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 961.6ms TimeCoverageRelationStatistics Valid=370, Invalid=3790, Unknown=0, NotChecked=0, Total=4160 [2021-05-21 21:32:54,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6325 states. [2021-05-21 21:32:54,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6325 to 5100. [2021-05-21 21:32:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5100 states, 5099 states have (on average 3.3881153167287703) internal successors, (17276), 5099 states have internal predecessors, (17276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:54,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 17276 transitions. [2021-05-21 21:32:54,860 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 17276 transitions. Word has length 39 [2021-05-21 21:32:54,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:54,860 INFO L482 AbstractCegarLoop]: Abstraction has 5100 states and 17276 transitions. [2021-05-21 21:32:54,860 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:54,860 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 17276 transitions. [2021-05-21 21:32:54,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:54,866 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:54,866 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:54,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-05-21 21:32:54,866 INFO L430 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:54,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:54,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1638189764, now seen corresponding path program 348 times [2021-05-21 21:32:54,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:54,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667808986] [2021-05-21 21:32:54,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:55,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:55,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:55,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667808986] [2021-05-21 21:32:55,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667808986] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:55,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:55,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:55,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109433187] [2021-05-21 21:32:55,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:55,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:55,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:55,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:55,023 INFO L87 Difference]: Start difference. First operand 5100 states and 17276 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:56,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:56,584 INFO L93 Difference]: Finished difference Result 6328 states and 21316 transitions. [2021-05-21 21:32:56,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-21 21:32:56,584 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:56,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:56,595 INFO L225 Difference]: With dead ends: 6328 [2021-05-21 21:32:56,595 INFO L226 Difference]: Without dead ends: 6285 [2021-05-21 21:32:56,596 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 992.8ms TimeCoverageRelationStatistics Valid=382, Invalid=3908, Unknown=0, NotChecked=0, Total=4290 [2021-05-21 21:32:56,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6285 states. [2021-05-21 21:32:56,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6285 to 5096. [2021-05-21 21:32:56,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5096 states, 5095 states have (on average 3.3888125613346416) internal successors, (17266), 5095 states have internal predecessors, (17266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:56,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5096 states to 5096 states and 17266 transitions. [2021-05-21 21:32:56,681 INFO L78 Accepts]: Start accepts. Automaton has 5096 states and 17266 transitions. Word has length 39 [2021-05-21 21:32:56,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:56,681 INFO L482 AbstractCegarLoop]: Abstraction has 5096 states and 17266 transitions. [2021-05-21 21:32:56,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:56,681 INFO L276 IsEmpty]: Start isEmpty. Operand 5096 states and 17266 transitions. [2021-05-21 21:32:56,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:56,688 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:56,688 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:56,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-05-21 21:32:56,688 INFO L430 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:56,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:56,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1504274044, now seen corresponding path program 349 times [2021-05-21 21:32:56,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:56,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555636658] [2021-05-21 21:32:56,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:56,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:56,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555636658] [2021-05-21 21:32:56,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555636658] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:56,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:56,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:32:56,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922184117] [2021-05-21 21:32:56,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:32:56,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:56,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:32:56,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:32:56,872 INFO L87 Difference]: Start difference. First operand 5096 states and 17266 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:58,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:32:58,464 INFO L93 Difference]: Finished difference Result 6399 states and 21476 transitions. [2021-05-21 21:32:58,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-21 21:32:58,464 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:32:58,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:32:58,475 INFO L225 Difference]: With dead ends: 6399 [2021-05-21 21:32:58,475 INFO L226 Difference]: Without dead ends: 6339 [2021-05-21 21:32:58,476 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 1024.2ms TimeCoverageRelationStatistics Valid=401, Invalid=4155, Unknown=0, NotChecked=0, Total=4556 [2021-05-21 21:32:58,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6339 states. [2021-05-21 21:32:58,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6339 to 5096. [2021-05-21 21:32:58,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5096 states, 5095 states have (on average 3.3888125613346416) internal successors, (17266), 5095 states have internal predecessors, (17266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5096 states to 5096 states and 17266 transitions. [2021-05-21 21:32:58,566 INFO L78 Accepts]: Start accepts. Automaton has 5096 states and 17266 transitions. Word has length 39 [2021-05-21 21:32:58,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:32:58,566 INFO L482 AbstractCegarLoop]: Abstraction has 5096 states and 17266 transitions. [2021-05-21 21:32:58,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:32:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 5096 states and 17266 transitions. [2021-05-21 21:32:58,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:32:58,573 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:32:58,573 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:32:58,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-05-21 21:32:58,573 INFO L430 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:32:58,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:32:58,573 INFO L82 PathProgramCache]: Analyzing trace with hash 711126710, now seen corresponding path program 350 times [2021-05-21 21:32:58,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:32:58,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309798040] [2021-05-21 21:32:58,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:32:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:32:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:32:58,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:32:58,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309798040] [2021-05-21 21:32:58,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309798040] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:32:58,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:32:58,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:32:58,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195060457] [2021-05-21 21:32:58,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:32:58,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:32:58,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:32:58,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:32:58,722 INFO L87 Difference]: Start difference. First operand 5096 states and 17266 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:00,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:00,169 INFO L93 Difference]: Finished difference Result 6370 states and 21417 transitions. [2021-05-21 21:33:00,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-21 21:33:00,170 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:00,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:00,181 INFO L225 Difference]: With dead ends: 6370 [2021-05-21 21:33:00,181 INFO L226 Difference]: Without dead ends: 6294 [2021-05-21 21:33:00,181 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 901.5ms TimeCoverageRelationStatistics Valid=358, Invalid=3548, Unknown=0, NotChecked=0, Total=3906 [2021-05-21 21:33:00,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6294 states. [2021-05-21 21:33:00,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6294 to 5104. [2021-05-21 21:33:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5104 states, 5103 states have (on average 3.3866353125612383) internal successors, (17282), 5103 states have internal predecessors, (17282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:00,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 17282 transitions. [2021-05-21 21:33:00,263 INFO L78 Accepts]: Start accepts. Automaton has 5104 states and 17282 transitions. Word has length 39 [2021-05-21 21:33:00,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:00,263 INFO L482 AbstractCegarLoop]: Abstraction has 5104 states and 17282 transitions. [2021-05-21 21:33:00,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:00,263 INFO L276 IsEmpty]: Start isEmpty. Operand 5104 states and 17282 transitions. [2021-05-21 21:33:00,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:00,269 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:00,269 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:00,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-05-21 21:33:00,269 INFO L430 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:00,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:00,269 INFO L82 PathProgramCache]: Analyzing trace with hash -306926902, now seen corresponding path program 351 times [2021-05-21 21:33:00,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:00,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090665916] [2021-05-21 21:33:00,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:00,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:00,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090665916] [2021-05-21 21:33:00,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090665916] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:00,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:00,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:00,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521962396] [2021-05-21 21:33:00,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:00,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:00,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:00,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:00,426 INFO L87 Difference]: Start difference. First operand 5104 states and 17282 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:01,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:01,976 INFO L93 Difference]: Finished difference Result 6352 states and 21363 transitions. [2021-05-21 21:33:01,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-21 21:33:01,976 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:01,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:01,987 INFO L225 Difference]: With dead ends: 6352 [2021-05-21 21:33:01,987 INFO L226 Difference]: Without dead ends: 6282 [2021-05-21 21:33:01,987 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1002.3ms TimeCoverageRelationStatistics Valid=383, Invalid=4039, Unknown=0, NotChecked=0, Total=4422 [2021-05-21 21:33:02,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-05-21 21:33:02,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 5092. [2021-05-21 21:33:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5092 states, 5091 states have (on average 3.3887252013356903) internal successors, (17252), 5091 states have internal predecessors, (17252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 17252 transitions. [2021-05-21 21:33:02,070 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 17252 transitions. Word has length 39 [2021-05-21 21:33:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:02,070 INFO L482 AbstractCegarLoop]: Abstraction has 5092 states and 17252 transitions. [2021-05-21 21:33:02,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:02,071 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 17252 transitions. [2021-05-21 21:33:02,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:02,077 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:02,077 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:02,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-05-21 21:33:02,078 INFO L430 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:02,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:02,078 INFO L82 PathProgramCache]: Analyzing trace with hash 169460968, now seen corresponding path program 352 times [2021-05-21 21:33:02,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:02,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185950037] [2021-05-21 21:33:02,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:02,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:02,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185950037] [2021-05-21 21:33:02,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185950037] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:02,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:02,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:02,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434206151] [2021-05-21 21:33:02,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:02,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:02,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:02,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:02,237 INFO L87 Difference]: Start difference. First operand 5092 states and 17252 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:04,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:04,418 INFO L93 Difference]: Finished difference Result 6595 states and 21976 transitions. [2021-05-21 21:33:04,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-21 21:33:04,418 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:04,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:04,429 INFO L225 Difference]: With dead ends: 6595 [2021-05-21 21:33:04,429 INFO L226 Difference]: Without dead ends: 6451 [2021-05-21 21:33:04,430 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2186 ImplicationChecksByTransitivity, 1472.3ms TimeCoverageRelationStatistics Valid=569, Invalid=6571, Unknown=0, NotChecked=0, Total=7140 [2021-05-21 21:33:04,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2021-05-21 21:33:04,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 5101. [2021-05-21 21:33:04,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 5100 states have (on average 3.3866666666666667) internal successors, (17272), 5100 states have internal predecessors, (17272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:04,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 17272 transitions. [2021-05-21 21:33:04,513 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 17272 transitions. Word has length 39 [2021-05-21 21:33:04,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:04,514 INFO L482 AbstractCegarLoop]: Abstraction has 5101 states and 17272 transitions. [2021-05-21 21:33:04,514 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:04,514 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 17272 transitions. [2021-05-21 21:33:04,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:04,520 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:04,521 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:04,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-05-21 21:33:04,521 INFO L430 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:04,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:04,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1367958262, now seen corresponding path program 353 times [2021-05-21 21:33:04,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:04,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13169994] [2021-05-21 21:33:04,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:04,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:04,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:04,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13169994] [2021-05-21 21:33:04,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13169994] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:04,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:04,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:04,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134479855] [2021-05-21 21:33:04,677 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:04,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:04,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:04,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:04,678 INFO L87 Difference]: Start difference. First operand 5101 states and 17272 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:06,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:06,165 INFO L93 Difference]: Finished difference Result 6409 states and 21515 transitions. [2021-05-21 21:33:06,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-21 21:33:06,165 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:06,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:06,176 INFO L225 Difference]: With dead ends: 6409 [2021-05-21 21:33:06,176 INFO L226 Difference]: Without dead ends: 6366 [2021-05-21 21:33:06,176 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 920.3ms TimeCoverageRelationStatistics Valid=359, Invalid=3801, Unknown=0, NotChecked=0, Total=4160 [2021-05-21 21:33:06,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6366 states. [2021-05-21 21:33:06,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6366 to 5110. [2021-05-21 21:33:06,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5110 states, 5109 states have (on average 3.3848111176355453) internal successors, (17293), 5109 states have internal predecessors, (17293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:06,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5110 states to 5110 states and 17293 transitions. [2021-05-21 21:33:06,259 INFO L78 Accepts]: Start accepts. Automaton has 5110 states and 17293 transitions. Word has length 39 [2021-05-21 21:33:06,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:06,259 INFO L482 AbstractCegarLoop]: Abstraction has 5110 states and 17293 transitions. [2021-05-21 21:33:06,259 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:06,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5110 states and 17293 transitions. [2021-05-21 21:33:06,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:06,265 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:06,266 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:06,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-05-21 21:33:06,266 INFO L430 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:06,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:06,266 INFO L82 PathProgramCache]: Analyzing trace with hash 382148874, now seen corresponding path program 354 times [2021-05-21 21:33:06,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:06,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40379748] [2021-05-21 21:33:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:06,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:06,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:06,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40379748] [2021-05-21 21:33:06,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40379748] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:06,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:06,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:06,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96426815] [2021-05-21 21:33:06,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:06,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:06,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:06,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:06,423 INFO L87 Difference]: Start difference. First operand 5110 states and 17293 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:07,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:07,977 INFO L93 Difference]: Finished difference Result 6317 states and 21249 transitions. [2021-05-21 21:33:07,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-21 21:33:07,977 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:07,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:07,987 INFO L225 Difference]: With dead ends: 6317 [2021-05-21 21:33:07,987 INFO L226 Difference]: Without dead ends: 6266 [2021-05-21 21:33:07,988 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 946.0ms TimeCoverageRelationStatistics Valid=355, Invalid=3805, Unknown=0, NotChecked=0, Total=4160 [2021-05-21 21:33:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2021-05-21 21:33:08,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 5104. [2021-05-21 21:33:08,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5104 states, 5103 states have (on average 3.3856554967666077) internal successors, (17277), 5103 states have internal predecessors, (17277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 17277 transitions. [2021-05-21 21:33:08,068 INFO L78 Accepts]: Start accepts. Automaton has 5104 states and 17277 transitions. Word has length 39 [2021-05-21 21:33:08,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:08,068 INFO L482 AbstractCegarLoop]: Abstraction has 5104 states and 17277 transitions. [2021-05-21 21:33:08,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:08,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5104 states and 17277 transitions. [2021-05-21 21:33:08,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:08,074 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:08,074 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:08,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-05-21 21:33:08,075 INFO L430 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:08,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:08,075 INFO L82 PathProgramCache]: Analyzing trace with hash 999367276, now seen corresponding path program 355 times [2021-05-21 21:33:08,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:08,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11773791] [2021-05-21 21:33:08,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:08,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:08,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11773791] [2021-05-21 21:33:08,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11773791] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:08,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:08,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:08,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812301590] [2021-05-21 21:33:08,231 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:08,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:08,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:08,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:08,231 INFO L87 Difference]: Start difference. First operand 5104 states and 17277 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:09,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:09,825 INFO L93 Difference]: Finished difference Result 6475 states and 21664 transitions. [2021-05-21 21:33:09,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-21 21:33:09,826 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:09,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:09,835 INFO L225 Difference]: With dead ends: 6475 [2021-05-21 21:33:09,835 INFO L226 Difference]: Without dead ends: 6403 [2021-05-21 21:33:09,836 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 1008.8ms TimeCoverageRelationStatistics Valid=391, Invalid=4165, Unknown=0, NotChecked=0, Total=4556 [2021-05-21 21:33:09,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6403 states. [2021-05-21 21:33:09,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6403 to 5099. [2021-05-21 21:33:09,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5099 states, 5098 states have (on average 3.3864260494311496) internal successors, (17264), 5098 states have internal predecessors, (17264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:09,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 17264 transitions. [2021-05-21 21:33:09,911 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 17264 transitions. Word has length 39 [2021-05-21 21:33:09,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:09,911 INFO L482 AbstractCegarLoop]: Abstraction has 5099 states and 17264 transitions. [2021-05-21 21:33:09,911 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:09,911 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 17264 transitions. [2021-05-21 21:33:09,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:09,917 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:09,917 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:09,917 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-05-21 21:33:09,917 INFO L430 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:09,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:09,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1016316924, now seen corresponding path program 356 times [2021-05-21 21:33:09,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:09,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734874515] [2021-05-21 21:33:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:10,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:10,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734874515] [2021-05-21 21:33:10,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734874515] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:10,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:10,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:33:10,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763471762] [2021-05-21 21:33:10,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:33:10,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:10,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:33:10,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:33:10,062 INFO L87 Difference]: Start difference. First operand 5099 states and 17264 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:11,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:11,427 INFO L93 Difference]: Finished difference Result 6356 states and 21401 transitions. [2021-05-21 21:33:11,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-21 21:33:11,427 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:11,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:11,437 INFO L225 Difference]: With dead ends: 6356 [2021-05-21 21:33:11,437 INFO L226 Difference]: Without dead ends: 6280 [2021-05-21 21:33:11,438 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 850.3ms TimeCoverageRelationStatistics Valid=348, Invalid=3434, Unknown=0, NotChecked=0, Total=3782 [2021-05-21 21:33:11,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states. [2021-05-21 21:33:11,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6280 to 5113. [2021-05-21 21:33:11,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 3.38302034428795) internal successors, (17294), 5112 states have internal predecessors, (17294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 17294 transitions. [2021-05-21 21:33:11,521 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 17294 transitions. Word has length 39 [2021-05-21 21:33:11,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:11,521 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 17294 transitions. [2021-05-21 21:33:11,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:11,521 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 17294 transitions. [2021-05-21 21:33:11,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:11,527 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:11,527 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:11,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-05-21 21:33:11,527 INFO L430 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:11,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:11,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1730728038, now seen corresponding path program 357 times [2021-05-21 21:33:11,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:11,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202900680] [2021-05-21 21:33:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:11,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:11,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202900680] [2021-05-21 21:33:11,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202900680] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:11,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:11,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:11,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715670909] [2021-05-21 21:33:11,705 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:11,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:11,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:11,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:11,705 INFO L87 Difference]: Start difference. First operand 5113 states and 17294 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:13,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:13,171 INFO L93 Difference]: Finished difference Result 6395 states and 21473 transitions. [2021-05-21 21:33:13,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-21 21:33:13,172 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:13,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:13,182 INFO L225 Difference]: With dead ends: 6395 [2021-05-21 21:33:13,183 INFO L226 Difference]: Without dead ends: 6304 [2021-05-21 21:33:13,183 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 938.8ms TimeCoverageRelationStatistics Valid=366, Invalid=3794, Unknown=0, NotChecked=0, Total=4160 [2021-05-21 21:33:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6304 states. [2021-05-21 21:33:13,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6304 to 5089. [2021-05-21 21:33:13,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 3.388168238993711) internal successors, (17239), 5088 states have internal predecessors, (17239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:13,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 17239 transitions. [2021-05-21 21:33:13,267 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 17239 transitions. Word has length 39 [2021-05-21 21:33:13,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:13,267 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 17239 transitions. [2021-05-21 21:33:13,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:13,267 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 17239 transitions. [2021-05-21 21:33:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:13,274 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:13,274 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:13,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-05-21 21:33:13,274 INFO L430 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:13,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:13,274 INFO L82 PathProgramCache]: Analyzing trace with hash -248976344, now seen corresponding path program 358 times [2021-05-21 21:33:13,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:13,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574176600] [2021-05-21 21:33:13,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:13,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:13,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574176600] [2021-05-21 21:33:13,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574176600] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:13,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:13,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:13,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627733929] [2021-05-21 21:33:13,443 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:13,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:13,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:13,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:13,443 INFO L87 Difference]: Start difference. First operand 5089 states and 17239 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:16,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:16,105 INFO L93 Difference]: Finished difference Result 9645 states and 31815 transitions. [2021-05-21 21:33:16,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-21 21:33:16,106 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:16,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:16,121 INFO L225 Difference]: With dead ends: 9645 [2021-05-21 21:33:16,121 INFO L226 Difference]: Without dead ends: 9361 [2021-05-21 21:33:16,122 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2875 ImplicationChecksByTransitivity, 1556.5ms TimeCoverageRelationStatistics Valid=687, Invalid=8243, Unknown=0, NotChecked=0, Total=8930 [2021-05-21 21:33:16,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9361 states. [2021-05-21 21:33:16,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9361 to 5296. [2021-05-21 21:33:16,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 5295 states have (on average 3.3909348441926346) internal successors, (17955), 5295 states have internal predecessors, (17955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:16,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 17955 transitions. [2021-05-21 21:33:16,228 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 17955 transitions. Word has length 39 [2021-05-21 21:33:16,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:16,228 INFO L482 AbstractCegarLoop]: Abstraction has 5296 states and 17955 transitions. [2021-05-21 21:33:16,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:16,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 17955 transitions. [2021-05-21 21:33:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:16,234 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:16,234 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:16,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-05-21 21:33:16,235 INFO L430 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:16,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:16,235 INFO L82 PathProgramCache]: Analyzing trace with hash 923675878, now seen corresponding path program 359 times [2021-05-21 21:33:16,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:16,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172831430] [2021-05-21 21:33:16,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:16,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:16,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:16,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172831430] [2021-05-21 21:33:16,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172831430] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:16,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:16,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:16,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560923611] [2021-05-21 21:33:16,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:16,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:16,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:16,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:16,390 INFO L87 Difference]: Start difference. First operand 5296 states and 17955 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:18,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:18,965 INFO L93 Difference]: Finished difference Result 9771 states and 32231 transitions. [2021-05-21 21:33:18,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-21 21:33:18,966 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:18,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:18,981 INFO L225 Difference]: With dead ends: 9771 [2021-05-21 21:33:18,981 INFO L226 Difference]: Without dead ends: 9609 [2021-05-21 21:33:18,981 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2733 ImplicationChecksByTransitivity, 1512.0ms TimeCoverageRelationStatistics Valid=669, Invalid=7887, Unknown=0, NotChecked=0, Total=8556 [2021-05-21 21:33:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9609 states. [2021-05-21 21:33:19,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9609 to 5309. [2021-05-21 21:33:19,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5308 states have (on average 3.3896006028636023) internal successors, (17992), 5308 states have internal predecessors, (17992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:19,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 17992 transitions. [2021-05-21 21:33:19,085 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 17992 transitions. Word has length 39 [2021-05-21 21:33:19,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:19,085 INFO L482 AbstractCegarLoop]: Abstraction has 5309 states and 17992 transitions. [2021-05-21 21:33:19,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:19,085 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 17992 transitions. [2021-05-21 21:33:19,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:19,114 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:19,115 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:19,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-05-21 21:33:19,115 INFO L430 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:19,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:19,115 INFO L82 PathProgramCache]: Analyzing trace with hash 855930998, now seen corresponding path program 360 times [2021-05-21 21:33:19,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:19,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869567409] [2021-05-21 21:33:19,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:19,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:19,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869567409] [2021-05-21 21:33:19,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869567409] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:19,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:19,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:19,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754598784] [2021-05-21 21:33:19,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:19,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:19,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:19,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:19,268 INFO L87 Difference]: Start difference. First operand 5309 states and 17992 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:21,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:21,859 INFO L93 Difference]: Finished difference Result 9489 states and 31430 transitions. [2021-05-21 21:33:21,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-21 21:33:21,859 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:21,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:21,873 INFO L225 Difference]: With dead ends: 9489 [2021-05-21 21:33:21,873 INFO L226 Difference]: Without dead ends: 9338 [2021-05-21 21:33:21,874 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2733 ImplicationChecksByTransitivity, 1512.8ms TimeCoverageRelationStatistics Valid=650, Invalid=7906, Unknown=0, NotChecked=0, Total=8556 [2021-05-21 21:33:21,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9338 states. [2021-05-21 21:33:21,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9338 to 5286. [2021-05-21 21:33:21,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 5285 states have (on average 3.3892147587511827) internal successors, (17912), 5285 states have internal predecessors, (17912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:21,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 17912 transitions. [2021-05-21 21:33:21,968 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 17912 transitions. Word has length 39 [2021-05-21 21:33:21,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:21,968 INFO L482 AbstractCegarLoop]: Abstraction has 5286 states and 17912 transitions. [2021-05-21 21:33:21,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:21,968 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 17912 transitions. [2021-05-21 21:33:21,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:21,975 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:21,975 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:21,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-05-21 21:33:21,975 INFO L430 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:21,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:21,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1071710760, now seen corresponding path program 361 times [2021-05-21 21:33:21,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:21,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218091986] [2021-05-21 21:33:21,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:22,143 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:22,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218091986] [2021-05-21 21:33:22,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218091986] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:22,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:22,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:22,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544737943] [2021-05-21 21:33:22,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:22,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:22,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:22,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:22,144 INFO L87 Difference]: Start difference. First operand 5286 states and 17912 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:24,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:24,690 INFO L93 Difference]: Finished difference Result 9665 states and 31976 transitions. [2021-05-21 21:33:24,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-21 21:33:24,691 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:24,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:24,705 INFO L225 Difference]: With dead ends: 9665 [2021-05-21 21:33:24,705 INFO L226 Difference]: Without dead ends: 9525 [2021-05-21 21:33:24,706 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2595 ImplicationChecksByTransitivity, 1502.7ms TimeCoverageRelationStatistics Valid=633, Invalid=7557, Unknown=0, NotChecked=0, Total=8190 [2021-05-21 21:33:24,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9525 states. [2021-05-21 21:33:24,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9525 to 5237. [2021-05-21 21:33:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5236 states have (on average 3.3894194041252863) internal successors, (17747), 5236 states have internal predecessors, (17747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:24,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 17747 transitions. [2021-05-21 21:33:24,804 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 17747 transitions. Word has length 39 [2021-05-21 21:33:24,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:24,804 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 17747 transitions. [2021-05-21 21:33:24,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:24,804 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 17747 transitions. [2021-05-21 21:33:24,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:24,810 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:24,811 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:24,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-05-21 21:33:24,811 INFO L430 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:24,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:24,811 INFO L82 PathProgramCache]: Analyzing trace with hash -562346440, now seen corresponding path program 362 times [2021-05-21 21:33:24,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:24,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646796787] [2021-05-21 21:33:24,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:24,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:24,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:24,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646796787] [2021-05-21 21:33:24,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646796787] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:24,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:24,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:24,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156877040] [2021-05-21 21:33:24,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:24,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:24,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:24,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:24,968 INFO L87 Difference]: Start difference. First operand 5237 states and 17747 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:26,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:26,466 INFO L93 Difference]: Finished difference Result 5863 states and 19501 transitions. [2021-05-21 21:33:26,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-21 21:33:26,466 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:26,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:26,476 INFO L225 Difference]: With dead ends: 5863 [2021-05-21 21:33:26,476 INFO L226 Difference]: Without dead ends: 5799 [2021-05-21 21:33:26,476 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 965.1ms TimeCoverageRelationStatistics Valid=349, Invalid=3811, Unknown=0, NotChecked=0, Total=4160 [2021-05-21 21:33:26,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2021-05-21 21:33:26,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 5241. [2021-05-21 21:33:26,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5241 states, 5240 states have (on average 3.3887404580152674) internal successors, (17757), 5240 states have internal predecessors, (17757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:26,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 17757 transitions. [2021-05-21 21:33:26,556 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 17757 transitions. Word has length 39 [2021-05-21 21:33:26,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:26,556 INFO L482 AbstractCegarLoop]: Abstraction has 5241 states and 17757 transitions. [2021-05-21 21:33:26,556 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:26,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 17757 transitions. [2021-05-21 21:33:26,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:26,562 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:26,562 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:26,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-05-21 21:33:26,563 INFO L430 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:26,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:26,563 INFO L82 PathProgramCache]: Analyzing trace with hash 356137130, now seen corresponding path program 363 times [2021-05-21 21:33:26,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:26,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279944524] [2021-05-21 21:33:26,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:26,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:26,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279944524] [2021-05-21 21:33:26,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279944524] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:26,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:26,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:26,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279868162] [2021-05-21 21:33:26,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:26,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:26,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:26,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:26,756 INFO L87 Difference]: Start difference. First operand 5241 states and 17757 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:27,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:27,730 INFO L93 Difference]: Finished difference Result 5680 states and 18997 transitions. [2021-05-21 21:33:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:33:27,730 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:27,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:27,739 INFO L225 Difference]: With dead ends: 5680 [2021-05-21 21:33:27,739 INFO L226 Difference]: Without dead ends: 5637 [2021-05-21 21:33:27,740 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 613.0ms TimeCoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 21:33:27,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5637 states. [2021-05-21 21:33:27,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5637 to 5247. [2021-05-21 21:33:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 5246 states have (on average 3.3873427373236753) internal successors, (17770), 5246 states have internal predecessors, (17770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:27,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 17770 transitions. [2021-05-21 21:33:27,815 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 17770 transitions. Word has length 39 [2021-05-21 21:33:27,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:27,815 INFO L482 AbstractCegarLoop]: Abstraction has 5247 states and 17770 transitions. [2021-05-21 21:33:27,816 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:27,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 17770 transitions. [2021-05-21 21:33:27,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:27,822 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:27,822 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:27,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-05-21 21:33:27,822 INFO L430 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:27,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:27,822 INFO L82 PathProgramCache]: Analyzing trace with hash 376285864, now seen corresponding path program 364 times [2021-05-21 21:33:27,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:27,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094896986] [2021-05-21 21:33:27,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:27,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:27,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094896986] [2021-05-21 21:33:27,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094896986] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:27,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:27,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:27,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389337616] [2021-05-21 21:33:27,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:27,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:27,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:27,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:27,978 INFO L87 Difference]: Start difference. First operand 5247 states and 17770 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:28,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:28,980 INFO L93 Difference]: Finished difference Result 5643 states and 18915 transitions. [2021-05-21 21:33:28,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:33:28,980 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:28,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:28,989 INFO L225 Difference]: With dead ends: 5643 [2021-05-21 21:33:28,989 INFO L226 Difference]: Without dead ends: 5600 [2021-05-21 21:33:28,990 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 635.0ms TimeCoverageRelationStatistics Valid=226, Invalid=2126, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 21:33:29,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5600 states. [2021-05-21 21:33:29,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5600 to 5243. [2021-05-21 21:33:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5242 states have (on average 3.3880198397558186) internal successors, (17760), 5242 states have internal predecessors, (17760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:29,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 17760 transitions. [2021-05-21 21:33:29,080 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 17760 transitions. Word has length 39 [2021-05-21 21:33:29,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:29,080 INFO L482 AbstractCegarLoop]: Abstraction has 5243 states and 17760 transitions. [2021-05-21 21:33:29,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:29,080 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 17760 transitions. [2021-05-21 21:33:29,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:29,086 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:29,086 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:29,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-05-21 21:33:29,086 INFO L430 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:29,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:29,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1528789352, now seen corresponding path program 365 times [2021-05-21 21:33:29,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:29,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323460309] [2021-05-21 21:33:29,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:29,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:29,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323460309] [2021-05-21 21:33:29,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323460309] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:29,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:29,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:29,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551800134] [2021-05-21 21:33:29,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:29,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:29,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:29,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:29,242 INFO L87 Difference]: Start difference. First operand 5243 states and 17760 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:30,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:30,330 INFO L93 Difference]: Finished difference Result 5714 states and 19112 transitions. [2021-05-21 21:33:30,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:33:30,330 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:30,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:30,339 INFO L225 Difference]: With dead ends: 5714 [2021-05-21 21:33:30,339 INFO L226 Difference]: Without dead ends: 5654 [2021-05-21 21:33:30,339 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 693.5ms TimeCoverageRelationStatistics Valid=257, Invalid=2499, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 21:33:30,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2021-05-21 21:33:30,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 5237. [2021-05-21 21:33:30,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5236 states have (on average 3.3894194041252863) internal successors, (17747), 5236 states have internal predecessors, (17747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:30,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 17747 transitions. [2021-05-21 21:33:30,413 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 17747 transitions. Word has length 39 [2021-05-21 21:33:30,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:30,413 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 17747 transitions. [2021-05-21 21:33:30,413 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:30,413 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 17747 transitions. [2021-05-21 21:33:30,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:30,418 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:30,419 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:30,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-05-21 21:33:30,419 INFO L430 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:30,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:30,419 INFO L82 PathProgramCache]: Analyzing trace with hash -550777190, now seen corresponding path program 366 times [2021-05-21 21:33:30,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:30,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067870620] [2021-05-21 21:33:30,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:30,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:30,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:30,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067870620] [2021-05-21 21:33:30,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067870620] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:30,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:30,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:33:30,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767316895] [2021-05-21 21:33:30,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:33:30,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:30,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:33:30,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:33:30,571 INFO L87 Difference]: Start difference. First operand 5237 states and 17747 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:31,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:31,579 INFO L93 Difference]: Finished difference Result 5682 states and 19052 transitions. [2021-05-21 21:33:31,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:33:31,579 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:31,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:31,588 INFO L225 Difference]: With dead ends: 5682 [2021-05-21 21:33:31,588 INFO L226 Difference]: Without dead ends: 5606 [2021-05-21 21:33:31,588 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 642.9ms TimeCoverageRelationStatistics Valid=214, Invalid=2042, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:33:31,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5606 states. [2021-05-21 21:33:31,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5606 to 5249. [2021-05-21 21:33:31,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5249 states, 5248 states have (on average 3.3862423780487805) internal successors, (17771), 5248 states have internal predecessors, (17771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:31,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 17771 transitions. [2021-05-21 21:33:31,660 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 17771 transitions. Word has length 39 [2021-05-21 21:33:31,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:31,660 INFO L482 AbstractCegarLoop]: Abstraction has 5249 states and 17771 transitions. [2021-05-21 21:33:31,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:31,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 17771 transitions. [2021-05-21 21:33:31,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:31,666 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:31,666 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:31,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-05-21 21:33:31,666 INFO L430 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:31,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:31,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1568830802, now seen corresponding path program 367 times [2021-05-21 21:33:31,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:31,667 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619889819] [2021-05-21 21:33:31,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:31,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:31,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619889819] [2021-05-21 21:33:31,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619889819] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:31,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:31,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:31,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084723471] [2021-05-21 21:33:31,821 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:31,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:31,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:31,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:31,821 INFO L87 Difference]: Start difference. First operand 5249 states and 17771 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:32,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:32,858 INFO L93 Difference]: Finished difference Result 5664 states and 18998 transitions. [2021-05-21 21:33:32,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 21:33:32,858 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:32,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:32,867 INFO L225 Difference]: With dead ends: 5664 [2021-05-21 21:33:32,867 INFO L226 Difference]: Without dead ends: 5594 [2021-05-21 21:33:32,867 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 652.8ms TimeCoverageRelationStatistics Valid=233, Invalid=2317, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:33:32,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2021-05-21 21:33:32,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 5237. [2021-05-21 21:33:32,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5236 states have (on average 3.388655462184874) internal successors, (17743), 5236 states have internal predecessors, (17743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:32,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 17743 transitions. [2021-05-21 21:33:32,947 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 17743 transitions. Word has length 39 [2021-05-21 21:33:32,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:32,947 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 17743 transitions. [2021-05-21 21:33:32,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:32,947 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 17743 transitions. [2021-05-21 21:33:32,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:32,954 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:32,954 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:32,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-05-21 21:33:32,954 INFO L430 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:32,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:32,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1422348750, now seen corresponding path program 368 times [2021-05-21 21:33:32,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:32,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664138667] [2021-05-21 21:33:32,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:33,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:33,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664138667] [2021-05-21 21:33:33,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664138667] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:33,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:33,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:33,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458655193] [2021-05-21 21:33:33,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:33,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:33,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:33,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:33,110 INFO L87 Difference]: Start difference. First operand 5237 states and 17743 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:35,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:35,048 INFO L93 Difference]: Finished difference Result 8130 states and 27321 transitions. [2021-05-21 21:33:35,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-21 21:33:35,048 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:35,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:35,061 INFO L225 Difference]: With dead ends: 8130 [2021-05-21 21:33:35,061 INFO L226 Difference]: Without dead ends: 8024 [2021-05-21 21:33:35,062 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1649 ImplicationChecksByTransitivity, 1164.9ms TimeCoverageRelationStatistics Valid=457, Invalid=5243, Unknown=0, NotChecked=0, Total=5700 [2021-05-21 21:33:35,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8024 states. [2021-05-21 21:33:35,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8024 to 5290. [2021-05-21 21:33:35,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 5289 states have (on average 3.3891094724900737) internal successors, (17925), 5289 states have internal predecessors, (17925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:35,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 17925 transitions. [2021-05-21 21:33:35,154 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 17925 transitions. Word has length 39 [2021-05-21 21:33:35,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:35,154 INFO L482 AbstractCegarLoop]: Abstraction has 5290 states and 17925 transitions. [2021-05-21 21:33:35,155 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:35,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 17925 transitions. [2021-05-21 21:33:35,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:35,161 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:35,161 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:35,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-05-21 21:33:35,161 INFO L430 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:35,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:35,161 INFO L82 PathProgramCache]: Analyzing trace with hash -358249552, now seen corresponding path program 369 times [2021-05-21 21:33:35,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:35,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343707895] [2021-05-21 21:33:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:35,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:35,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:35,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343707895] [2021-05-21 21:33:35,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343707895] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:35,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:35,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:35,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476838666] [2021-05-21 21:33:35,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:35,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:35,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:35,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:35,317 INFO L87 Difference]: Start difference. First operand 5290 states and 17925 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:37,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:37,584 INFO L93 Difference]: Finished difference Result 8948 states and 30175 transitions. [2021-05-21 21:33:37,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-21 21:33:37,584 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:37,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:37,600 INFO L225 Difference]: With dead ends: 8948 [2021-05-21 21:33:37,600 INFO L226 Difference]: Without dead ends: 8896 [2021-05-21 21:33:37,600 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2071 ImplicationChecksByTransitivity, 1349.9ms TimeCoverageRelationStatistics Valid=513, Invalid=6293, Unknown=0, NotChecked=0, Total=6806 [2021-05-21 21:33:37,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8896 states. [2021-05-21 21:33:37,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8896 to 5264. [2021-05-21 21:33:37,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5264 states, 5263 states have (on average 3.3900817024510737) internal successors, (17842), 5263 states have internal predecessors, (17842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:37,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 17842 transitions. [2021-05-21 21:33:37,709 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 17842 transitions. Word has length 39 [2021-05-21 21:33:37,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:37,709 INFO L482 AbstractCegarLoop]: Abstraction has 5264 states and 17842 transitions. [2021-05-21 21:33:37,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:37,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 17842 transitions. [2021-05-21 21:33:37,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:37,716 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:37,716 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:37,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-05-21 21:33:37,716 INFO L430 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:37,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:37,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1954134976, now seen corresponding path program 370 times [2021-05-21 21:33:37,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:37,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276946318] [2021-05-21 21:33:37,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:37,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:37,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276946318] [2021-05-21 21:33:37,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276946318] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:37,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:37,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:37,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232835803] [2021-05-21 21:33:37,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:37,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:37,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:37,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:37,872 INFO L87 Difference]: Start difference. First operand 5264 states and 17842 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:39,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:39,129 INFO L93 Difference]: Finished difference Result 7462 states and 24986 transitions. [2021-05-21 21:33:39,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-21 21:33:39,130 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:39,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:39,142 INFO L225 Difference]: With dead ends: 7462 [2021-05-21 21:33:39,142 INFO L226 Difference]: Without dead ends: 7407 [2021-05-21 21:33:39,142 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 679.6ms TimeCoverageRelationStatistics Valid=266, Invalid=2596, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 21:33:39,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7407 states. [2021-05-21 21:33:39,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7407 to 5290. [2021-05-21 21:33:39,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 5289 states have (on average 3.390432974097183) internal successors, (17932), 5289 states have internal predecessors, (17932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:39,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 17932 transitions. [2021-05-21 21:33:39,229 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 17932 transitions. Word has length 39 [2021-05-21 21:33:39,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:39,229 INFO L482 AbstractCegarLoop]: Abstraction has 5290 states and 17932 transitions. [2021-05-21 21:33:39,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:39,229 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 17932 transitions. [2021-05-21 21:33:39,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:39,235 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:39,235 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:39,235 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-05-21 21:33:39,236 INFO L430 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:39,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:39,236 INFO L82 PathProgramCache]: Analyzing trace with hash -781482754, now seen corresponding path program 371 times [2021-05-21 21:33:39,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:39,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957680776] [2021-05-21 21:33:39,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:39,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:39,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957680776] [2021-05-21 21:33:39,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957680776] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:39,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:39,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:39,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69618365] [2021-05-21 21:33:39,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:39,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:39,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:39,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:39,391 INFO L87 Difference]: Start difference. First operand 5290 states and 17932 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:41,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:41,061 INFO L93 Difference]: Finished difference Result 8195 states and 27530 transitions. [2021-05-21 21:33:41,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-21 21:33:41,061 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:41,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:41,074 INFO L225 Difference]: With dead ends: 8195 [2021-05-21 21:33:41,074 INFO L226 Difference]: Without dead ends: 8135 [2021-05-21 21:33:41,075 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 922.1ms TimeCoverageRelationStatistics Valid=357, Invalid=3803, Unknown=0, NotChecked=0, Total=4160 [2021-05-21 21:33:41,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8135 states. [2021-05-21 21:33:41,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8135 to 5288. [2021-05-21 21:33:41,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5288 states, 5287 states have (on average 3.3907698127482506) internal successors, (17927), 5287 states have internal predecessors, (17927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 17927 transitions. [2021-05-21 21:33:41,183 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 17927 transitions. Word has length 39 [2021-05-21 21:33:41,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:41,183 INFO L482 AbstractCegarLoop]: Abstraction has 5288 states and 17927 transitions. [2021-05-21 21:33:41,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:41,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 17927 transitions. [2021-05-21 21:33:41,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:41,190 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:41,190 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:41,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-05-21 21:33:41,190 INFO L430 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:41,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:41,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1636080940, now seen corresponding path program 372 times [2021-05-21 21:33:41,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:41,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100019948] [2021-05-21 21:33:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:41,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:41,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100019948] [2021-05-21 21:33:41,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100019948] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:41,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:41,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:41,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094222616] [2021-05-21 21:33:41,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:41,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:41,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:41,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:41,346 INFO L87 Difference]: Start difference. First operand 5288 states and 17927 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:42,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:42,544 INFO L93 Difference]: Finished difference Result 7383 states and 24812 transitions. [2021-05-21 21:33:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:33:42,544 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:42,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:42,556 INFO L225 Difference]: With dead ends: 7383 [2021-05-21 21:33:42,557 INFO L226 Difference]: Without dead ends: 7292 [2021-05-21 21:33:42,557 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 637.3ms TimeCoverageRelationStatistics Valid=238, Invalid=2414, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:33:42,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7292 states. [2021-05-21 21:33:42,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7292 to 5288. [2021-05-21 21:33:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5288 states, 5287 states have (on average 3.3896349536599204) internal successors, (17921), 5287 states have internal predecessors, (17921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:42,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 17921 transitions. [2021-05-21 21:33:42,655 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 17921 transitions. Word has length 39 [2021-05-21 21:33:42,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:42,655 INFO L482 AbstractCegarLoop]: Abstraction has 5288 states and 17921 transitions. [2021-05-21 21:33:42,655 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 17921 transitions. [2021-05-21 21:33:42,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:42,662 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:42,662 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:42,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-05-21 21:33:42,662 INFO L430 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:42,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:42,662 INFO L82 PathProgramCache]: Analyzing trace with hash 133598734, now seen corresponding path program 373 times [2021-05-21 21:33:42,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:42,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028401727] [2021-05-21 21:33:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:42,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:42,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:42,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028401727] [2021-05-21 21:33:42,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028401727] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:42,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:42,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:42,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662494002] [2021-05-21 21:33:42,821 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:42,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:42,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:42,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:42,821 INFO L87 Difference]: Start difference. First operand 5288 states and 17921 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:44,603 INFO L93 Difference]: Finished difference Result 8285 states and 27895 transitions. [2021-05-21 21:33:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-21 21:33:44,603 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:44,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:44,616 INFO L225 Difference]: With dead ends: 8285 [2021-05-21 21:33:44,616 INFO L226 Difference]: Without dead ends: 8185 [2021-05-21 21:33:44,617 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 972.5ms TimeCoverageRelationStatistics Valid=367, Invalid=3923, Unknown=0, NotChecked=0, Total=4290 [2021-05-21 21:33:44,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8185 states. [2021-05-21 21:33:44,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8185 to 5282. [2021-05-21 21:33:44,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 5281 states have (on average 3.389888278735088) internal successors, (17902), 5281 states have internal predecessors, (17902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 17902 transitions. [2021-05-21 21:33:44,706 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 17902 transitions. Word has length 39 [2021-05-21 21:33:44,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:44,706 INFO L482 AbstractCegarLoop]: Abstraction has 5282 states and 17902 transitions. [2021-05-21 21:33:44,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:44,706 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 17902 transitions. [2021-05-21 21:33:44,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:44,712 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:44,713 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:44,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-05-21 21:33:44,713 INFO L430 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:44,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:44,713 INFO L82 PathProgramCache]: Analyzing trace with hash -103026262, now seen corresponding path program 374 times [2021-05-21 21:33:44,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:44,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771437773] [2021-05-21 21:33:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:44,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:44,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771437773] [2021-05-21 21:33:44,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771437773] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:44,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:44,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:33:44,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992164260] [2021-05-21 21:33:44,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:33:44,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:44,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:33:44,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:33:44,860 INFO L87 Difference]: Start difference. First operand 5282 states and 17902 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:45,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:45,766 INFO L93 Difference]: Finished difference Result 5634 states and 18942 transitions. [2021-05-21 21:33:45,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-21 21:33:45,767 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:45,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:45,776 INFO L225 Difference]: With dead ends: 5634 [2021-05-21 21:33:45,776 INFO L226 Difference]: Without dead ends: 5558 [2021-05-21 21:33:45,777 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 554.5ms TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 21:33:45,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2021-05-21 21:33:45,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 5326. [2021-05-21 21:33:45,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5326 states, 5325 states have (on average 3.3862910798122066) internal successors, (18032), 5325 states have internal predecessors, (18032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:45,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5326 states to 5326 states and 18032 transitions. [2021-05-21 21:33:45,887 INFO L78 Accepts]: Start accepts. Automaton has 5326 states and 18032 transitions. Word has length 39 [2021-05-21 21:33:45,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:45,887 INFO L482 AbstractCegarLoop]: Abstraction has 5326 states and 18032 transitions. [2021-05-21 21:33:45,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:45,887 INFO L276 IsEmpty]: Start isEmpty. Operand 5326 states and 18032 transitions. [2021-05-21 21:33:45,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:45,894 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:45,894 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:45,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-05-21 21:33:45,895 INFO L430 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:45,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:45,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1121079874, now seen corresponding path program 375 times [2021-05-21 21:33:45,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:45,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963294366] [2021-05-21 21:33:45,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:46,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:46,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963294366] [2021-05-21 21:33:46,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963294366] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:46,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:46,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:46,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043074681] [2021-05-21 21:33:46,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:46,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:46,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:46,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:46,053 INFO L87 Difference]: Start difference. First operand 5326 states and 18032 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:47,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:47,036 INFO L93 Difference]: Finished difference Result 5616 states and 18888 transitions. [2021-05-21 21:33:47,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-21 21:33:47,036 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:47,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:47,045 INFO L225 Difference]: With dead ends: 5616 [2021-05-21 21:33:47,045 INFO L226 Difference]: Without dead ends: 5550 [2021-05-21 21:33:47,045 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 612.0ms TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:33:47,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5550 states. [2021-05-21 21:33:47,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5550 to 5318. [2021-05-21 21:33:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5318 states, 5317 states have (on average 3.386872296407749) internal successors, (18008), 5317 states have internal predecessors, (18008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:47,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 18008 transitions. [2021-05-21 21:33:47,119 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 18008 transitions. Word has length 39 [2021-05-21 21:33:47,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:47,119 INFO L482 AbstractCegarLoop]: Abstraction has 5318 states and 18008 transitions. [2021-05-21 21:33:47,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:47,119 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 18008 transitions. [2021-05-21 21:33:47,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:47,126 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:47,126 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:47,126 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-05-21 21:33:47,126 INFO L430 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:47,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:47,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1403345528, now seen corresponding path program 376 times [2021-05-21 21:33:47,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:47,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205100667] [2021-05-21 21:33:47,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:47,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:47,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:47,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205100667] [2021-05-21 21:33:47,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205100667] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:47,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:47,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:47,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543017542] [2021-05-21 21:33:47,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:47,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:47,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:47,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:47,282 INFO L87 Difference]: Start difference. First operand 5318 states and 18008 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:48,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:48,277 INFO L93 Difference]: Finished difference Result 5629 states and 18921 transitions. [2021-05-21 21:33:48,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:33:48,278 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:48,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:48,286 INFO L225 Difference]: With dead ends: 5629 [2021-05-21 21:33:48,286 INFO L226 Difference]: Without dead ends: 5499 [2021-05-21 21:33:48,286 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 622.2ms TimeCoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:33:48,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2021-05-21 21:33:48,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 5282. [2021-05-21 21:33:48,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 5281 states have (on average 3.3883734141261126) internal successors, (17894), 5281 states have internal predecessors, (17894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:48,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 17894 transitions. [2021-05-21 21:33:48,358 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 17894 transitions. Word has length 39 [2021-05-21 21:33:48,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:48,358 INFO L482 AbstractCegarLoop]: Abstraction has 5282 states and 17894 transitions. [2021-05-21 21:33:48,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:48,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 17894 transitions. [2021-05-21 21:33:48,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:48,365 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:48,365 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:48,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-05-21 21:33:48,365 INFO L430 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:48,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:48,365 INFO L82 PathProgramCache]: Analyzing trace with hash -355827722, now seen corresponding path program 377 times [2021-05-21 21:33:48,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:48,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612341787] [2021-05-21 21:33:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:48,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:48,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:48,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612341787] [2021-05-21 21:33:48,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612341787] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:48,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:48,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:48,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405178070] [2021-05-21 21:33:48,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:48,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:48,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:48,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:48,522 INFO L87 Difference]: Start difference. First operand 5282 states and 17894 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:50,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:50,205 INFO L93 Difference]: Finished difference Result 5884 states and 19567 transitions. [2021-05-21 21:33:50,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-21 21:33:50,206 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:50,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:50,214 INFO L225 Difference]: With dead ends: 5884 [2021-05-21 21:33:50,214 INFO L226 Difference]: Without dead ends: 5820 [2021-05-21 21:33:50,215 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 1118.9ms TimeCoverageRelationStatistics Valid=416, Invalid=4554, Unknown=0, NotChecked=0, Total=4970 [2021-05-21 21:33:50,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5820 states. [2021-05-21 21:33:50,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5820 to 5292. [2021-05-21 21:33:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5292 states, 5291 states have (on average 3.3883953883953883) internal successors, (17928), 5291 states have internal predecessors, (17928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:50,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 17928 transitions. [2021-05-21 21:33:50,292 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 17928 transitions. Word has length 39 [2021-05-21 21:33:50,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:50,292 INFO L482 AbstractCegarLoop]: Abstraction has 5292 states and 17928 transitions. [2021-05-21 21:33:50,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:50,292 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 17928 transitions. [2021-05-21 21:33:50,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:50,298 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:50,298 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:50,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-05-21 21:33:50,298 INFO L430 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:50,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:50,298 INFO L82 PathProgramCache]: Analyzing trace with hash 562655848, now seen corresponding path program 378 times [2021-05-21 21:33:50,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:50,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810273255] [2021-05-21 21:33:50,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:50,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:50,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:50,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810273255] [2021-05-21 21:33:50,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810273255] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:50,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:50,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:50,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440783137] [2021-05-21 21:33:50,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:50,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:50,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:50,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:50,459 INFO L87 Difference]: Start difference. First operand 5292 states and 17928 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:51,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:51,574 INFO L93 Difference]: Finished difference Result 5732 states and 19160 transitions. [2021-05-21 21:33:51,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-21 21:33:51,574 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:51,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:51,583 INFO L225 Difference]: With dead ends: 5732 [2021-05-21 21:33:51,583 INFO L226 Difference]: Without dead ends: 5689 [2021-05-21 21:33:51,583 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 693.8ms TimeCoverageRelationStatistics Valid=261, Invalid=2495, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 21:33:51,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5689 states. [2021-05-21 21:33:51,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5689 to 5298. [2021-05-21 21:33:51,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5298 states, 5297 states have (on average 3.387011515952426) internal successors, (17941), 5297 states have internal predecessors, (17941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:51,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5298 states to 5298 states and 17941 transitions. [2021-05-21 21:33:51,662 INFO L78 Accepts]: Start accepts. Automaton has 5298 states and 17941 transitions. Word has length 39 [2021-05-21 21:33:51,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:51,662 INFO L482 AbstractCegarLoop]: Abstraction has 5298 states and 17941 transitions. [2021-05-21 21:33:51,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:51,663 INFO L276 IsEmpty]: Start isEmpty. Operand 5298 states and 17941 transitions. [2021-05-21 21:33:51,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:51,669 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:51,669 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:51,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-05-21 21:33:51,669 INFO L430 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:51,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:51,669 INFO L82 PathProgramCache]: Analyzing trace with hash 582804582, now seen corresponding path program 379 times [2021-05-21 21:33:51,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:51,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848388281] [2021-05-21 21:33:51,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:51,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:51,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848388281] [2021-05-21 21:33:51,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848388281] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:51,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:51,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:51,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299223756] [2021-05-21 21:33:51,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:51,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:51,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:51,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:51,827 INFO L87 Difference]: Start difference. First operand 5298 states and 17941 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:52,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:52,940 INFO L93 Difference]: Finished difference Result 5695 states and 19078 transitions. [2021-05-21 21:33:52,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-21 21:33:52,940 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:52,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:52,950 INFO L225 Difference]: With dead ends: 5695 [2021-05-21 21:33:52,950 INFO L226 Difference]: Without dead ends: 5652 [2021-05-21 21:33:52,950 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 710.3ms TimeCoverageRelationStatistics Valid=264, Invalid=2492, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 21:33:52,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2021-05-21 21:33:53,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 5294. [2021-05-21 21:33:53,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 5293 states have (on average 3.387681843944833) internal successors, (17931), 5293 states have internal predecessors, (17931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:53,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 17931 transitions. [2021-05-21 21:33:53,049 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 17931 transitions. Word has length 39 [2021-05-21 21:33:53,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:53,049 INFO L482 AbstractCegarLoop]: Abstraction has 5294 states and 17931 transitions. [2021-05-21 21:33:53,049 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:53,049 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 17931 transitions. [2021-05-21 21:33:53,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:53,055 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:53,055 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:53,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-05-21 21:33:53,055 INFO L430 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:53,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:53,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1735308070, now seen corresponding path program 380 times [2021-05-21 21:33:53,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:53,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974792132] [2021-05-21 21:33:53,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:53,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:53,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:53,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974792132] [2021-05-21 21:33:53,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974792132] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:53,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:53,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:53,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454287129] [2021-05-21 21:33:53,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:53,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:53,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:53,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:53,209 INFO L87 Difference]: Start difference. First operand 5294 states and 17931 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:54,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:54,475 INFO L93 Difference]: Finished difference Result 5736 states and 19182 transitions. [2021-05-21 21:33:54,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:33:54,476 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:54,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:54,484 INFO L225 Difference]: With dead ends: 5736 [2021-05-21 21:33:54,485 INFO L226 Difference]: Without dead ends: 5676 [2021-05-21 21:33:54,485 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 829.7ms TimeCoverageRelationStatistics Valid=308, Invalid=2998, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 21:33:54,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5676 states. [2021-05-21 21:33:54,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5676 to 5300. [2021-05-21 21:33:54,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 5299 states have (on average 3.387809020569919) internal successors, (17952), 5299 states have internal predecessors, (17952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:54,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 17952 transitions. [2021-05-21 21:33:54,563 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 17952 transitions. Word has length 39 [2021-05-21 21:33:54,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:54,563 INFO L482 AbstractCegarLoop]: Abstraction has 5300 states and 17952 transitions. [2021-05-21 21:33:54,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:54,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 17952 transitions. [2021-05-21 21:33:54,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:54,569 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:54,570 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:54,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-05-21 21:33:54,570 INFO L430 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:54,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:54,570 INFO L82 PathProgramCache]: Analyzing trace with hash -344258472, now seen corresponding path program 381 times [2021-05-21 21:33:54,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:54,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914584156] [2021-05-21 21:33:54,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:54,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:54,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914584156] [2021-05-21 21:33:54,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914584156] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:54,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:54,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:33:54,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388848028] [2021-05-21 21:33:54,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:33:54,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:54,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:33:54,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:33:54,716 INFO L87 Difference]: Start difference. First operand 5300 states and 17952 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:55,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:55,842 INFO L93 Difference]: Finished difference Result 5707 states and 19123 transitions. [2021-05-21 21:33:55,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:33:55,842 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:55,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:55,851 INFO L225 Difference]: With dead ends: 5707 [2021-05-21 21:33:55,852 INFO L226 Difference]: Without dead ends: 5631 [2021-05-21 21:33:55,852 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 735.0ms TimeCoverageRelationStatistics Valid=260, Invalid=2496, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 21:33:55,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2021-05-21 21:33:55,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 5312. [2021-05-21 21:33:55,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5312 states, 5311 states have (on average 3.384673319525513) internal successors, (17976), 5311 states have internal predecessors, (17976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:55,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 17976 transitions. [2021-05-21 21:33:55,935 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 17976 transitions. Word has length 39 [2021-05-21 21:33:55,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:55,935 INFO L482 AbstractCegarLoop]: Abstraction has 5312 states and 17976 transitions. [2021-05-21 21:33:55,935 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:55,935 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 17976 transitions. [2021-05-21 21:33:55,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:55,943 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:55,943 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:55,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-05-21 21:33:55,943 INFO L430 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:55,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:55,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1362312084, now seen corresponding path program 382 times [2021-05-21 21:33:55,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:55,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854933601] [2021-05-21 21:33:55,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:56,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:56,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:56,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854933601] [2021-05-21 21:33:56,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854933601] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:56,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:56,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:56,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665555770] [2021-05-21 21:33:56,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:56,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:56,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:56,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:56,103 INFO L87 Difference]: Start difference. First operand 5312 states and 17976 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:57,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:57,319 INFO L93 Difference]: Finished difference Result 5689 states and 19069 transitions. [2021-05-21 21:33:57,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-21 21:33:57,319 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:57,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:57,328 INFO L225 Difference]: With dead ends: 5689 [2021-05-21 21:33:57,328 INFO L226 Difference]: Without dead ends: 5619 [2021-05-21 21:33:57,328 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 785.8ms TimeCoverageRelationStatistics Valid=280, Invalid=2800, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:33:57,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5619 states. [2021-05-21 21:33:57,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5619 to 5300. [2021-05-21 21:33:57,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 5299 states have (on average 3.386676731458766) internal successors, (17946), 5299 states have internal predecessors, (17946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:57,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 17946 transitions. [2021-05-21 21:33:57,402 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 17946 transitions. Word has length 39 [2021-05-21 21:33:57,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:57,402 INFO L482 AbstractCegarLoop]: Abstraction has 5300 states and 17946 transitions. [2021-05-21 21:33:57,403 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:57,403 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 17946 transitions. [2021-05-21 21:33:57,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:57,409 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:57,409 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:57,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-05-21 21:33:57,409 INFO L430 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:57,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:57,409 INFO L82 PathProgramCache]: Analyzing trace with hash -885924214, now seen corresponding path program 383 times [2021-05-21 21:33:57,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:57,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127941335] [2021-05-21 21:33:57,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:57,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:57,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127941335] [2021-05-21 21:33:57,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127941335] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:57,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:57,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:57,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81579045] [2021-05-21 21:33:57,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:57,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:57,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:57,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:57,567 INFO L87 Difference]: Start difference. First operand 5300 states and 17946 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:59,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:33:59,211 INFO L93 Difference]: Finished difference Result 5861 states and 19500 transitions. [2021-05-21 21:33:59,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-21 21:33:59,212 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:33:59,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:33:59,221 INFO L225 Difference]: With dead ends: 5861 [2021-05-21 21:33:59,221 INFO L226 Difference]: Without dead ends: 5797 [2021-05-21 21:33:59,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 1071.0ms TimeCoverageRelationStatistics Valid=366, Invalid=4056, Unknown=0, NotChecked=0, Total=4422 [2021-05-21 21:33:59,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5797 states. [2021-05-21 21:33:59,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5797 to 5309. [2021-05-21 21:33:59,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5308 states have (on average 3.3854559155990955) internal successors, (17970), 5308 states have internal predecessors, (17970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:59,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 17970 transitions. [2021-05-21 21:33:59,304 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 17970 transitions. Word has length 39 [2021-05-21 21:33:59,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:33:59,304 INFO L482 AbstractCegarLoop]: Abstraction has 5309 states and 17970 transitions. [2021-05-21 21:33:59,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:33:59,304 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 17970 transitions. [2021-05-21 21:33:59,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:33:59,310 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:33:59,310 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:33:59,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-05-21 21:33:59,310 INFO L430 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:33:59,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:33:59,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1871623852, now seen corresponding path program 384 times [2021-05-21 21:33:59,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:33:59,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113838433] [2021-05-21 21:33:59,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:33:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:33:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:33:59,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:33:59,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113838433] [2021-05-21 21:33:59,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113838433] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:33:59,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:33:59,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:33:59,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108350831] [2021-05-21 21:33:59,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:33:59,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:33:59,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:33:59,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:33:59,463 INFO L87 Difference]: Start difference. First operand 5309 states and 17970 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:00,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:00,520 INFO L93 Difference]: Finished difference Result 5712 states and 19100 transitions. [2021-05-21 21:34:00,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:34:00,520 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:00,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:00,529 INFO L225 Difference]: With dead ends: 5712 [2021-05-21 21:34:00,529 INFO L226 Difference]: Without dead ends: 5669 [2021-05-21 21:34:00,529 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 650.0ms TimeCoverageRelationStatistics Valid=224, Invalid=2226, Unknown=0, NotChecked=0, Total=2450 [2021-05-21 21:34:00,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2021-05-21 21:34:00,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 5318. [2021-05-21 21:34:00,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5318 states, 5317 states have (on average 3.3836750047018995) internal successors, (17991), 5317 states have internal predecessors, (17991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:00,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 17991 transitions. [2021-05-21 21:34:00,597 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 17991 transitions. Word has length 39 [2021-05-21 21:34:00,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:00,597 INFO L482 AbstractCegarLoop]: Abstraction has 5318 states and 17991 transitions. [2021-05-21 21:34:00,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:00,597 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 17991 transitions. [2021-05-21 21:34:00,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:00,602 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:00,602 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:00,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-05-21 21:34:00,603 INFO L430 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:00,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:00,603 INFO L82 PathProgramCache]: Analyzing trace with hash -673236308, now seen corresponding path program 385 times [2021-05-21 21:34:00,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:00,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792811576] [2021-05-21 21:34:00,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:00,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:00,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:00,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792811576] [2021-05-21 21:34:00,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792811576] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:00,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:00,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:00,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129573038] [2021-05-21 21:34:00,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:00,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:00,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:00,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:00,754 INFO L87 Difference]: Start difference. First operand 5318 states and 17991 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:01,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:01,828 INFO L93 Difference]: Finished difference Result 5681 states and 19033 transitions. [2021-05-21 21:34:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 21:34:01,828 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:01,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:01,837 INFO L225 Difference]: With dead ends: 5681 [2021-05-21 21:34:01,837 INFO L226 Difference]: Without dead ends: 5630 [2021-05-21 21:34:01,837 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 657.5ms TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:34:01,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2021-05-21 21:34:01,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 5312. [2021-05-21 21:34:01,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5312 states, 5311 states have (on average 3.3844850310675954) internal successors, (17975), 5311 states have internal predecessors, (17975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:01,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 17975 transitions. [2021-05-21 21:34:01,911 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 17975 transitions. Word has length 39 [2021-05-21 21:34:01,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:01,911 INFO L482 AbstractCegarLoop]: Abstraction has 5312 states and 17975 transitions. [2021-05-21 21:34:01,911 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:01,911 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 17975 transitions. [2021-05-21 21:34:01,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:01,918 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:01,918 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:01,918 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-05-21 21:34:01,918 INFO L430 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:01,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:01,918 INFO L82 PathProgramCache]: Analyzing trace with hash -56017906, now seen corresponding path program 386 times [2021-05-21 21:34:01,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:01,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505802634] [2021-05-21 21:34:01,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:02,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:02,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:02,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505802634] [2021-05-21 21:34:02,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505802634] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:02,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:02,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:02,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993409102] [2021-05-21 21:34:02,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:02,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:02,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:02,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:02,072 INFO L87 Difference]: Start difference. First operand 5312 states and 17975 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:03,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:03,295 INFO L93 Difference]: Finished difference Result 5754 states and 19200 transitions. [2021-05-21 21:34:03,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-21 21:34:03,295 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:03,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:03,304 INFO L225 Difference]: With dead ends: 5754 [2021-05-21 21:34:03,304 INFO L226 Difference]: Without dead ends: 5708 [2021-05-21 21:34:03,304 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 792.4ms TimeCoverageRelationStatistics Valid=275, Invalid=2805, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:34:03,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5708 states. [2021-05-21 21:34:03,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5708 to 5319. [2021-05-21 21:34:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5319 states, 5318 states have (on average 3.382850695750282) internal successors, (17990), 5318 states have internal predecessors, (17990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 17990 transitions. [2021-05-21 21:34:03,383 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 17990 transitions. Word has length 39 [2021-05-21 21:34:03,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:03,383 INFO L482 AbstractCegarLoop]: Abstraction has 5319 states and 17990 transitions. [2021-05-21 21:34:03,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:03,383 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 17990 transitions. [2021-05-21 21:34:03,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:03,390 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:03,390 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:03,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-05-21 21:34:03,390 INFO L430 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:03,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:03,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1491085396, now seen corresponding path program 387 times [2021-05-21 21:34:03,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:03,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927982285] [2021-05-21 21:34:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:03,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:03,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927982285] [2021-05-21 21:34:03,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927982285] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:03,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:03,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:03,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628270306] [2021-05-21 21:34:03,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:03,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:03,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:03,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:03,547 INFO L87 Difference]: Start difference. First operand 5319 states and 17990 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:04,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:04,625 INFO L93 Difference]: Finished difference Result 5689 states and 19047 transitions. [2021-05-21 21:34:04,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:34:04,626 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:04,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:04,634 INFO L225 Difference]: With dead ends: 5689 [2021-05-21 21:34:04,635 INFO L226 Difference]: Without dead ends: 5634 [2021-05-21 21:34:04,635 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 668.5ms TimeCoverageRelationStatistics Valid=243, Invalid=2409, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:34:04,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5634 states. [2021-05-21 21:34:04,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5634 to 5316. [2021-05-21 21:34:04,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5315 states have (on average 3.3832549388523048) internal successors, (17982), 5315 states have internal predecessors, (17982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 17982 transitions. [2021-05-21 21:34:04,711 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 17982 transitions. Word has length 39 [2021-05-21 21:34:04,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:04,711 INFO L482 AbstractCegarLoop]: Abstraction has 5316 states and 17982 transitions. [2021-05-21 21:34:04,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:04,712 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 17982 transitions. [2021-05-21 21:34:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:04,718 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:04,718 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:04,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-05-21 21:34:04,718 INFO L430 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:04,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:04,718 INFO L82 PathProgramCache]: Analyzing trace with hash -2071702106, now seen corresponding path program 388 times [2021-05-21 21:34:04,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:04,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620387935] [2021-05-21 21:34:04,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:04,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:04,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620387935] [2021-05-21 21:34:04,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620387935] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:04,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:04,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:34:04,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064233384] [2021-05-21 21:34:04,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:34:04,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:04,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:34:04,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:34:04,863 INFO L87 Difference]: Start difference. First operand 5316 states and 17982 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:05,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:05,978 INFO L93 Difference]: Finished difference Result 5650 states and 18957 transitions. [2021-05-21 21:34:05,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:34:05,978 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:05,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:05,987 INFO L225 Difference]: With dead ends: 5650 [2021-05-21 21:34:05,987 INFO L226 Difference]: Without dead ends: 5574 [2021-05-21 21:34:05,988 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 707.4ms TimeCoverageRelationStatistics Valid=249, Invalid=2403, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:34:06,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5574 states. [2021-05-21 21:34:06,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5574 to 5330. [2021-05-21 21:34:06,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 5329 states have (on average 3.3799962469506473) internal successors, (18012), 5329 states have internal predecessors, (18012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:06,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18012 transitions. [2021-05-21 21:34:06,074 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18012 transitions. Word has length 39 [2021-05-21 21:34:06,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:06,074 INFO L482 AbstractCegarLoop]: Abstraction has 5330 states and 18012 transitions. [2021-05-21 21:34:06,074 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:06,074 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18012 transitions. [2021-05-21 21:34:06,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:06,082 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:06,082 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:06,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-05-21 21:34:06,082 INFO L430 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:06,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:06,082 INFO L82 PathProgramCache]: Analyzing trace with hash 675342856, now seen corresponding path program 389 times [2021-05-21 21:34:06,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:06,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668799182] [2021-05-21 21:34:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:06,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:06,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668799182] [2021-05-21 21:34:06,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668799182] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:06,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:06,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:06,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294610152] [2021-05-21 21:34:06,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:06,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:06,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:06,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:06,243 INFO L87 Difference]: Start difference. First operand 5330 states and 18012 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:07,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:07,479 INFO L93 Difference]: Finished difference Result 5674 states and 18990 transitions. [2021-05-21 21:34:07,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:34:07,480 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:07,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:07,489 INFO L225 Difference]: With dead ends: 5674 [2021-05-21 21:34:07,489 INFO L226 Difference]: Without dead ends: 5628 [2021-05-21 21:34:07,489 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 784.6ms TimeCoverageRelationStatistics Valid=267, Invalid=2703, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:34:07,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2021-05-21 21:34:07,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 5330. [2021-05-21 21:34:07,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 5329 states have (on average 3.3799962469506473) internal successors, (18012), 5329 states have internal predecessors, (18012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:07,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18012 transitions. [2021-05-21 21:34:07,583 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18012 transitions. Word has length 39 [2021-05-21 21:34:07,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:07,583 INFO L482 AbstractCegarLoop]: Abstraction has 5330 states and 18012 transitions. [2021-05-21 21:34:07,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:07,583 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18012 transitions. [2021-05-21 21:34:07,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:07,590 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:07,590 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:07,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-05-21 21:34:07,590 INFO L430 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:07,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:07,590 INFO L82 PathProgramCache]: Analyzing trace with hash -759724634, now seen corresponding path program 390 times [2021-05-21 21:34:07,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:07,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030607201] [2021-05-21 21:34:07,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:07,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:07,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030607201] [2021-05-21 21:34:07,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030607201] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:07,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:07,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:07,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862418620] [2021-05-21 21:34:07,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:07,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:07,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:07,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:07,746 INFO L87 Difference]: Start difference. First operand 5330 states and 18012 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:08,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:08,802 INFO L93 Difference]: Finished difference Result 5602 states and 18822 transitions. [2021-05-21 21:34:08,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-21 21:34:08,803 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:08,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:08,811 INFO L225 Difference]: With dead ends: 5602 [2021-05-21 21:34:08,812 INFO L226 Difference]: Without dead ends: 5530 [2021-05-21 21:34:08,812 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 649.0ms TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:34:08,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5530 states. [2021-05-21 21:34:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5530 to 5310. [2021-05-21 21:34:08,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5310 states, 5309 states have (on average 3.3834997174609156) internal successors, (17963), 5309 states have internal predecessors, (17963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:08,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5310 states to 5310 states and 17963 transitions. [2021-05-21 21:34:08,888 INFO L78 Accepts]: Start accepts. Automaton has 5310 states and 17963 transitions. Word has length 39 [2021-05-21 21:34:08,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:08,888 INFO L482 AbstractCegarLoop]: Abstraction has 5310 states and 17963 transitions. [2021-05-21 21:34:08,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:08,888 INFO L276 IsEmpty]: Start isEmpty. Operand 5310 states and 17963 transitions. [2021-05-21 21:34:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:08,895 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:08,895 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:08,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-05-21 21:34:08,895 INFO L430 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:08,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1304361526, now seen corresponding path program 391 times [2021-05-21 21:34:08,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:08,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675128897] [2021-05-21 21:34:08,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:09,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:09,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675128897] [2021-05-21 21:34:09,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675128897] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:09,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:09,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:09,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99242567] [2021-05-21 21:34:09,052 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:09,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:09,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:09,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:09,053 INFO L87 Difference]: Start difference. First operand 5310 states and 17963 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:10,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:10,341 INFO L93 Difference]: Finished difference Result 5762 states and 19200 transitions. [2021-05-21 21:34:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-21 21:34:10,341 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:10,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:10,350 INFO L225 Difference]: With dead ends: 5762 [2021-05-21 21:34:10,350 INFO L226 Difference]: Without dead ends: 5711 [2021-05-21 21:34:10,350 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 837.6ms TimeCoverageRelationStatistics Valid=315, Invalid=3107, Unknown=0, NotChecked=0, Total=3422 [2021-05-21 21:34:10,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2021-05-21 21:34:10,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 5323. [2021-05-21 21:34:10,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5323 states, 5322 states have (on average 3.381999248402856) internal successors, (17999), 5322 states have internal predecessors, (17999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:10,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 17999 transitions. [2021-05-21 21:34:10,427 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 17999 transitions. Word has length 39 [2021-05-21 21:34:10,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:10,427 INFO L482 AbstractCegarLoop]: Abstraction has 5323 states and 17999 transitions. [2021-05-21 21:34:10,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:10,427 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 17999 transitions. [2021-05-21 21:34:10,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:10,434 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:10,434 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:10,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-05-21 21:34:10,434 INFO L430 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:10,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:10,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1284212792, now seen corresponding path program 392 times [2021-05-21 21:34:10,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:10,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548899843] [2021-05-21 21:34:10,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:10,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:10,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548899843] [2021-05-21 21:34:10,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548899843] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:10,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:10,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:10,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309051376] [2021-05-21 21:34:10,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:10,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:10,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:10,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:10,592 INFO L87 Difference]: Start difference. First operand 5323 states and 17999 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:11,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:11,780 INFO L93 Difference]: Finished difference Result 5729 states and 19122 transitions. [2021-05-21 21:34:11,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-21 21:34:11,781 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:11,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:11,790 INFO L225 Difference]: With dead ends: 5729 [2021-05-21 21:34:11,790 INFO L226 Difference]: Without dead ends: 5686 [2021-05-21 21:34:11,790 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 787.7ms TimeCoverageRelationStatistics Valid=292, Invalid=2788, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:34:11,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-05-21 21:34:11,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 5323. [2021-05-21 21:34:11,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5323 states, 5322 states have (on average 3.3816234498308906) internal successors, (17997), 5322 states have internal predecessors, (17997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 17997 transitions. [2021-05-21 21:34:11,871 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 17997 transitions. Word has length 39 [2021-05-21 21:34:11,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:11,871 INFO L482 AbstractCegarLoop]: Abstraction has 5323 states and 17997 transitions. [2021-05-21 21:34:11,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:11,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 17997 transitions. [2021-05-21 21:34:11,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:11,877 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:11,877 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:11,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-05-21 21:34:11,877 INFO L430 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:11,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:11,878 INFO L82 PathProgramCache]: Analyzing trace with hash -131709304, now seen corresponding path program 393 times [2021-05-21 21:34:11,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:11,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48772409] [2021-05-21 21:34:11,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:12,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:12,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:12,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48772409] [2021-05-21 21:34:12,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48772409] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:12,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:12,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:12,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169354320] [2021-05-21 21:34:12,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:12,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:12,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:12,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:12,034 INFO L87 Difference]: Start difference. First operand 5323 states and 17997 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:13,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:13,355 INFO L93 Difference]: Finished difference Result 5794 states and 19270 transitions. [2021-05-21 21:34:13,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-21 21:34:13,355 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:13,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:13,364 INFO L225 Difference]: With dead ends: 5794 [2021-05-21 21:34:13,364 INFO L226 Difference]: Without dead ends: 5734 [2021-05-21 21:34:13,364 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 899.7ms TimeCoverageRelationStatistics Valid=338, Invalid=3322, Unknown=0, NotChecked=0, Total=3660 [2021-05-21 21:34:13,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5734 states. [2021-05-21 21:34:13,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5734 to 5319. [2021-05-21 21:34:13,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5319 states, 5318 states have (on average 3.382098533283189) internal successors, (17986), 5318 states have internal predecessors, (17986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:13,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 17986 transitions. [2021-05-21 21:34:13,443 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 17986 transitions. Word has length 39 [2021-05-21 21:34:13,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:13,443 INFO L482 AbstractCegarLoop]: Abstraction has 5319 states and 17986 transitions. [2021-05-21 21:34:13,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:13,444 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 17986 transitions. [2021-05-21 21:34:13,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:13,450 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:13,451 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:13,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-05-21 21:34:13,451 INFO L430 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:13,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:13,451 INFO L82 PathProgramCache]: Analyzing trace with hash -199454184, now seen corresponding path program 394 times [2021-05-21 21:34:13,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:13,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931547248] [2021-05-21 21:34:13,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:13,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:13,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:13,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931547248] [2021-05-21 21:34:13,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931547248] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:13,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:13,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:13,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650066540] [2021-05-21 21:34:13,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:13,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:13,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:13,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:13,610 INFO L87 Difference]: Start difference. First operand 5319 states and 17986 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:14,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:14,804 INFO L93 Difference]: Finished difference Result 5736 states and 19120 transitions. [2021-05-21 21:34:14,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-21 21:34:14,804 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:14,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:14,812 INFO L225 Difference]: With dead ends: 5736 [2021-05-21 21:34:14,812 INFO L226 Difference]: Without dead ends: 5693 [2021-05-21 21:34:14,813 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 769.3ms TimeCoverageRelationStatistics Valid=272, Invalid=2698, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:34:14,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2021-05-21 21:34:14,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 5328. [2021-05-21 21:34:14,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5328 states, 5327 states have (on average 3.3803266378824857) internal successors, (18007), 5327 states have internal predecessors, (18007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:14,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 18007 transitions. [2021-05-21 21:34:14,886 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 18007 transitions. Word has length 39 [2021-05-21 21:34:14,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:14,886 INFO L482 AbstractCegarLoop]: Abstraction has 5328 states and 18007 transitions. [2021-05-21 21:34:14,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:14,887 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 18007 transitions. [2021-05-21 21:34:14,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:14,893 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:14,893 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:14,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-05-21 21:34:14,893 INFO L430 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:14,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:14,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1550652952, now seen corresponding path program 395 times [2021-05-21 21:34:14,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:14,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291312233] [2021-05-21 21:34:14,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:15,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:15,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:15,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291312233] [2021-05-21 21:34:15,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291312233] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:15,051 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:15,051 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:15,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823772398] [2021-05-21 21:34:15,051 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:15,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:15,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:15,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:15,051 INFO L87 Difference]: Start difference. First operand 5328 states and 18007 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:16,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:16,233 INFO L93 Difference]: Finished difference Result 5770 states and 19204 transitions. [2021-05-21 21:34:16,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-21 21:34:16,234 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:16,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:16,242 INFO L225 Difference]: With dead ends: 5770 [2021-05-21 21:34:16,243 INFO L226 Difference]: Without dead ends: 5670 [2021-05-21 21:34:16,243 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 774.4ms TimeCoverageRelationStatistics Valid=288, Invalid=2904, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 21:34:16,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5670 states. [2021-05-21 21:34:16,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5670 to 5330. [2021-05-21 21:34:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 5329 states have (on average 3.3786826796772376) internal successors, (18005), 5329 states have internal predecessors, (18005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18005 transitions. [2021-05-21 21:34:16,320 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18005 transitions. Word has length 39 [2021-05-21 21:34:16,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:16,320 INFO L482 AbstractCegarLoop]: Abstraction has 5330 states and 18005 transitions. [2021-05-21 21:34:16,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:16,320 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18005 transitions. [2021-05-21 21:34:16,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:16,326 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:16,327 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:16,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-05-21 21:34:16,327 INFO L430 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:16,327 INFO L82 PathProgramCache]: Analyzing trace with hash -2127095942, now seen corresponding path program 396 times [2021-05-21 21:34:16,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:16,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130776615] [2021-05-21 21:34:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:16,485 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:16,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130776615] [2021-05-21 21:34:16,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130776615] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:16,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:16,485 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:16,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839202221] [2021-05-21 21:34:16,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:16,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:16,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:16,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:16,485 INFO L87 Difference]: Start difference. First operand 5330 states and 18005 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:17,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:17,756 INFO L93 Difference]: Finished difference Result 5722 states and 19087 transitions. [2021-05-21 21:34:17,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:34:17,756 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:17,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:17,765 INFO L225 Difference]: With dead ends: 5722 [2021-05-21 21:34:17,765 INFO L226 Difference]: Without dead ends: 5676 [2021-05-21 21:34:17,765 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 850.1ms TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-05-21 21:34:17,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5676 states. [2021-05-21 21:34:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5676 to 5328. [2021-05-21 21:34:17,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5328 states, 5327 states have (on average 3.379388023277642) internal successors, (18002), 5327 states have internal predecessors, (18002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:17,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 18002 transitions. [2021-05-21 21:34:17,838 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 18002 transitions. Word has length 39 [2021-05-21 21:34:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:17,838 INFO L482 AbstractCegarLoop]: Abstraction has 5328 states and 18002 transitions. [2021-05-21 21:34:17,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:17,838 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 18002 transitions. [2021-05-21 21:34:17,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:17,845 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:17,845 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:17,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-05-21 21:34:17,845 INFO L430 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:17,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:17,845 INFO L82 PathProgramCache]: Analyzing trace with hash 732803864, now seen corresponding path program 397 times [2021-05-21 21:34:17,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:17,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861744721] [2021-05-21 21:34:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:18,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:18,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:18,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861744721] [2021-05-21 21:34:18,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861744721] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:18,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:18,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:18,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961264880] [2021-05-21 21:34:18,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:18,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:18,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:18,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:18,004 INFO L87 Difference]: Start difference. First operand 5328 states and 18002 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:19,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:19,136 INFO L93 Difference]: Finished difference Result 5691 states and 19011 transitions. [2021-05-21 21:34:19,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:34:19,137 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:19,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:19,146 INFO L225 Difference]: With dead ends: 5691 [2021-05-21 21:34:19,146 INFO L226 Difference]: Without dead ends: 5630 [2021-05-21 21:34:19,146 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 725.9ms TimeCoverageRelationStatistics Valid=265, Invalid=2597, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 21:34:19,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2021-05-21 21:34:19,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 5319. [2021-05-21 21:34:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5319 states, 5318 states have (on average 3.38097028958255) internal successors, (17980), 5318 states have internal predecessors, (17980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 17980 transitions. [2021-05-21 21:34:19,229 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 17980 transitions. Word has length 39 [2021-05-21 21:34:19,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:19,229 INFO L482 AbstractCegarLoop]: Abstraction has 5319 states and 17980 transitions. [2021-05-21 21:34:19,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:19,229 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 17980 transitions. [2021-05-21 21:34:19,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:19,236 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:19,236 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:19,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-05-21 21:34:19,236 INFO L430 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:19,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:19,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1009249178, now seen corresponding path program 398 times [2021-05-21 21:34:19,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:19,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614588849] [2021-05-21 21:34:19,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:19,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:19,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614588849] [2021-05-21 21:34:19,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614588849] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:19,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:19,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:19,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326017002] [2021-05-21 21:34:19,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:19,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:19,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:19,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:19,395 INFO L87 Difference]: Start difference. First operand 5319 states and 17980 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:20,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:20,454 INFO L93 Difference]: Finished difference Result 5622 states and 18854 transitions. [2021-05-21 21:34:20,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-21 21:34:20,454 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:20,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:20,464 INFO L225 Difference]: With dead ends: 5622 [2021-05-21 21:34:20,464 INFO L226 Difference]: Without dead ends: 5579 [2021-05-21 21:34:20,464 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 685.3ms TimeCoverageRelationStatistics Valid=235, Invalid=2215, Unknown=0, NotChecked=0, Total=2450 [2021-05-21 21:34:20,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5579 states. [2021-05-21 21:34:20,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5579 to 5315. [2021-05-21 21:34:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5315 states, 5314 states have (on average 3.3816334211516748) internal successors, (17970), 5314 states have internal predecessors, (17970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:20,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5315 states to 5315 states and 17970 transitions. [2021-05-21 21:34:20,547 INFO L78 Accepts]: Start accepts. Automaton has 5315 states and 17970 transitions. Word has length 39 [2021-05-21 21:34:20,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:20,547 INFO L482 AbstractCegarLoop]: Abstraction has 5315 states and 17970 transitions. [2021-05-21 21:34:20,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:20,547 INFO L276 IsEmpty]: Start isEmpty. Operand 5315 states and 17970 transitions. [2021-05-21 21:34:20,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:20,554 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:20,554 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:20,554 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-05-21 21:34:20,554 INFO L430 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:20,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:20,554 INFO L82 PathProgramCache]: Analyzing trace with hash -549899254, now seen corresponding path program 399 times [2021-05-21 21:34:20,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:20,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790641519] [2021-05-21 21:34:20,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:20,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:20,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790641519] [2021-05-21 21:34:20,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790641519] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:20,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:20,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:20,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162614599] [2021-05-21 21:34:20,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:20,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:20,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:20,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:20,712 INFO L87 Difference]: Start difference. First operand 5315 states and 17970 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:21,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:21,765 INFO L93 Difference]: Finished difference Result 5624 states and 18861 transitions. [2021-05-21 21:34:21,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 21:34:21,765 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:21,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:21,774 INFO L225 Difference]: With dead ends: 5624 [2021-05-21 21:34:21,774 INFO L226 Difference]: Without dead ends: 5573 [2021-05-21 21:34:21,774 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 661.5ms TimeCoverageRelationStatistics Valid=239, Invalid=2311, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:34:21,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5573 states. [2021-05-21 21:34:21,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5573 to 5309. [2021-05-21 21:34:21,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5308 states have (on average 3.382629992464205) internal successors, (17955), 5308 states have internal predecessors, (17955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 17955 transitions. [2021-05-21 21:34:21,881 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 17955 transitions. Word has length 39 [2021-05-21 21:34:21,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:21,882 INFO L482 AbstractCegarLoop]: Abstraction has 5309 states and 17955 transitions. [2021-05-21 21:34:21,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:21,882 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 17955 transitions. [2021-05-21 21:34:21,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:21,888 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:21,888 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:21,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-05-21 21:34:21,888 INFO L430 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:21,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:21,888 INFO L82 PathProgramCache]: Analyzing trace with hash -175566746, now seen corresponding path program 400 times [2021-05-21 21:34:21,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:21,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492898041] [2021-05-21 21:34:21,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:22,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:22,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492898041] [2021-05-21 21:34:22,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492898041] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:22,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:22,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:22,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723462327] [2021-05-21 21:34:22,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:22,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:22,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:22,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:22,047 INFO L87 Difference]: Start difference. First operand 5309 states and 17955 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:24,890 INFO L93 Difference]: Finished difference Result 9865 states and 32666 transitions. [2021-05-21 21:34:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-21 21:34:24,891 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:24,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:24,906 INFO L225 Difference]: With dead ends: 9865 [2021-05-21 21:34:24,907 INFO L226 Difference]: Without dead ends: 9742 [2021-05-21 21:34:24,907 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3079 ImplicationChecksByTransitivity, 1687.7ms TimeCoverageRelationStatistics Valid=742, Invalid=8764, Unknown=0, NotChecked=0, Total=9506 [2021-05-21 21:34:24,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9742 states. [2021-05-21 21:34:24,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9742 to 5434. [2021-05-21 21:34:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5434 states, 5433 states have (on average 3.3817412111172462) internal successors, (18373), 5433 states have internal predecessors, (18373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:25,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5434 states to 5434 states and 18373 transitions. [2021-05-21 21:34:25,011 INFO L78 Accepts]: Start accepts. Automaton has 5434 states and 18373 transitions. Word has length 39 [2021-05-21 21:34:25,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:25,011 INFO L482 AbstractCegarLoop]: Abstraction has 5434 states and 18373 transitions. [2021-05-21 21:34:25,012 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:25,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5434 states and 18373 transitions. [2021-05-21 21:34:25,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:25,018 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:25,018 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:25,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-05-21 21:34:25,018 INFO L430 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:25,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:25,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1933551160, now seen corresponding path program 401 times [2021-05-21 21:34:25,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:25,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73333910] [2021-05-21 21:34:25,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:25,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:25,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73333910] [2021-05-21 21:34:25,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73333910] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:25,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:25,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:25,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955899752] [2021-05-21 21:34:25,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:25,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:25,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:25,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:25,174 INFO L87 Difference]: Start difference. First operand 5434 states and 18373 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:27,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:27,998 INFO L93 Difference]: Finished difference Result 9720 states and 32238 transitions. [2021-05-21 21:34:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-21 21:34:27,998 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:27,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:28,013 INFO L225 Difference]: With dead ends: 9720 [2021-05-21 21:34:28,013 INFO L226 Difference]: Without dead ends: 9525 [2021-05-21 21:34:28,014 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2920 ImplicationChecksByTransitivity, 1648.7ms TimeCoverageRelationStatistics Valid=705, Invalid=8415, Unknown=0, NotChecked=0, Total=9120 [2021-05-21 21:34:28,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9525 states. [2021-05-21 21:34:28,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9525 to 5493. [2021-05-21 21:34:28,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5493 states, 5492 states have (on average 3.3818281136198105) internal successors, (18573), 5492 states have internal predecessors, (18573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:28,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 18573 transitions. [2021-05-21 21:34:28,118 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 18573 transitions. Word has length 39 [2021-05-21 21:34:28,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:28,118 INFO L482 AbstractCegarLoop]: Abstraction has 5493 states and 18573 transitions. [2021-05-21 21:34:28,118 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:28,118 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 18573 transitions. [2021-05-21 21:34:28,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:28,125 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:28,125 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:28,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-05-21 21:34:28,125 INFO L430 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:28,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:28,125 INFO L82 PathProgramCache]: Analyzing trace with hash -602608834, now seen corresponding path program 402 times [2021-05-21 21:34:28,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:28,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865744216] [2021-05-21 21:34:28,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:28,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:28,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:28,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865744216] [2021-05-21 21:34:28,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865744216] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:28,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:28,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:28,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12935620] [2021-05-21 21:34:28,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:28,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:28,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:28,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:28,282 INFO L87 Difference]: Start difference. First operand 5493 states and 18573 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:29,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:29,944 INFO L93 Difference]: Finished difference Result 7872 states and 26181 transitions. [2021-05-21 21:34:29,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-21 21:34:29,944 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:29,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:29,956 INFO L225 Difference]: With dead ends: 7872 [2021-05-21 21:34:29,957 INFO L226 Difference]: Without dead ends: 7754 [2021-05-21 21:34:29,957 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 996.9ms TimeCoverageRelationStatistics Valid=407, Invalid=4285, Unknown=0, NotChecked=0, Total=4692 [2021-05-21 21:34:29,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7754 states. [2021-05-21 21:34:30,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7754 to 5504. [2021-05-21 21:34:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5504 states, 5503 states have (on average 3.3816100308922405) internal successors, (18609), 5503 states have internal predecessors, (18609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:30,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5504 states to 5504 states and 18609 transitions. [2021-05-21 21:34:30,052 INFO L78 Accepts]: Start accepts. Automaton has 5504 states and 18609 transitions. Word has length 39 [2021-05-21 21:34:30,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:30,052 INFO L482 AbstractCegarLoop]: Abstraction has 5504 states and 18609 transitions. [2021-05-21 21:34:30,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:30,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5504 states and 18609 transitions. [2021-05-21 21:34:30,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:30,059 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:30,059 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:30,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-05-21 21:34:30,059 INFO L430 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:30,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:30,060 INFO L82 PathProgramCache]: Analyzing trace with hash 570043388, now seen corresponding path program 403 times [2021-05-21 21:34:30,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:30,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51789887] [2021-05-21 21:34:30,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:30,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:30,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:30,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51789887] [2021-05-21 21:34:30,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51789887] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:30,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:30,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:30,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443959163] [2021-05-21 21:34:30,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:30,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:30,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:30,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:30,215 INFO L87 Difference]: Start difference. First operand 5504 states and 18609 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:32,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:32,185 INFO L93 Difference]: Finished difference Result 8538 states and 28553 transitions. [2021-05-21 21:34:32,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-21 21:34:32,185 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:32,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:32,198 INFO L225 Difference]: With dead ends: 8538 [2021-05-21 21:34:32,198 INFO L226 Difference]: Without dead ends: 8478 [2021-05-21 21:34:32,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 1164.1ms TimeCoverageRelationStatistics Valid=469, Invalid=5231, Unknown=0, NotChecked=0, Total=5700 [2021-05-21 21:34:32,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8478 states. [2021-05-21 21:34:32,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8478 to 5502. [2021-05-21 21:34:32,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5502 states, 5501 states have (on average 3.381930558080349) internal successors, (18604), 5501 states have internal predecessors, (18604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:32,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 18604 transitions. [2021-05-21 21:34:32,291 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 18604 transitions. Word has length 39 [2021-05-21 21:34:32,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:32,291 INFO L482 AbstractCegarLoop]: Abstraction has 5502 states and 18604 transitions. [2021-05-21 21:34:32,291 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:32,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 18604 transitions. [2021-05-21 21:34:32,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:32,297 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:32,297 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:32,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-05-21 21:34:32,298 INFO L430 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:32,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:32,298 INFO L82 PathProgramCache]: Analyzing trace with hash -406882806, now seen corresponding path program 404 times [2021-05-21 21:34:32,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:32,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309775034] [2021-05-21 21:34:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:32,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:32,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309775034] [2021-05-21 21:34:32,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309775034] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:32,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:32,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:32,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065865549] [2021-05-21 21:34:32,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:32,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:32,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:32,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:32,451 INFO L87 Difference]: Start difference. First operand 5502 states and 18604 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:33,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:33,886 INFO L93 Difference]: Finished difference Result 7666 states and 25683 transitions. [2021-05-21 21:34:33,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-21 21:34:33,886 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:33,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:33,899 INFO L225 Difference]: With dead ends: 7666 [2021-05-21 21:34:33,899 INFO L226 Difference]: Without dead ends: 7575 [2021-05-21 21:34:33,899 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 798.6ms TimeCoverageRelationStatistics Valid=309, Invalid=3231, Unknown=0, NotChecked=0, Total=3540 [2021-05-21 21:34:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7575 states. [2021-05-21 21:34:33,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7575 to 5502. [2021-05-21 21:34:33,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5502 states, 5501 states have (on average 3.380839847300491) internal successors, (18598), 5501 states have internal predecessors, (18598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 18598 transitions. [2021-05-21 21:34:33,995 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 18598 transitions. Word has length 39 [2021-05-21 21:34:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:33,995 INFO L482 AbstractCegarLoop]: Abstraction has 5502 states and 18598 transitions. [2021-05-21 21:34:33,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 18598 transitions. [2021-05-21 21:34:34,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:34,002 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:34,002 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:34,002 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-05-21 21:34:34,002 INFO L430 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:34,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:34,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1909365012, now seen corresponding path program 405 times [2021-05-21 21:34:34,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:34,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283855715] [2021-05-21 21:34:34,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:34,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:34,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283855715] [2021-05-21 21:34:34,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283855715] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:34,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:34,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:34,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655131519] [2021-05-21 21:34:34,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:34,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:34,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:34,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:34,187 INFO L87 Difference]: Start difference. First operand 5502 states and 18598 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:36,122 INFO L93 Difference]: Finished difference Result 8536 states and 28660 transitions. [2021-05-21 21:34:36,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-21 21:34:36,123 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:36,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:36,136 INFO L225 Difference]: With dead ends: 8536 [2021-05-21 21:34:36,136 INFO L226 Difference]: Without dead ends: 8436 [2021-05-21 21:34:36,137 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 1098.9ms TimeCoverageRelationStatistics Valid=423, Invalid=4689, Unknown=0, NotChecked=0, Total=5112 [2021-05-21 21:34:36,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8436 states. [2021-05-21 21:34:36,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8436 to 5493. [2021-05-21 21:34:36,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5493 states, 5492 states have (on average 3.3812818645302256) internal successors, (18570), 5492 states have internal predecessors, (18570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:36,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 18570 transitions. [2021-05-21 21:34:36,235 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 18570 transitions. Word has length 39 [2021-05-21 21:34:36,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:36,235 INFO L482 AbstractCegarLoop]: Abstraction has 5493 states and 18570 transitions. [2021-05-21 21:34:36,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:36,235 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 18570 transitions. [2021-05-21 21:34:36,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:36,242 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:36,242 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:36,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-05-21 21:34:36,242 INFO L430 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:36,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:36,242 INFO L82 PathProgramCache]: Analyzing trace with hash -734494272, now seen corresponding path program 406 times [2021-05-21 21:34:36,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:36,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980091620] [2021-05-21 21:34:36,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:36,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:36,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:36,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980091620] [2021-05-21 21:34:36,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980091620] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:36,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:36,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:36,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184590455] [2021-05-21 21:34:36,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:36,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:36,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:36,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:36,397 INFO L87 Difference]: Start difference. First operand 5493 states and 18570 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:37,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:37,628 INFO L93 Difference]: Finished difference Result 5889 states and 19625 transitions. [2021-05-21 21:34:37,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:34:37,628 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:37,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:37,637 INFO L225 Difference]: With dead ends: 5889 [2021-05-21 21:34:37,638 INFO L226 Difference]: Without dead ends: 5834 [2021-05-21 21:34:37,638 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 797.2ms TimeCoverageRelationStatistics Valid=279, Invalid=2691, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:34:37,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2021-05-21 21:34:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5511. [2021-05-21 21:34:37,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5511 states, 5510 states have (on average 3.3784029038112524) internal successors, (18615), 5510 states have internal predecessors, (18615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:37,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5511 states to 5511 states and 18615 transitions. [2021-05-21 21:34:37,719 INFO L78 Accepts]: Start accepts. Automaton has 5511 states and 18615 transitions. Word has length 39 [2021-05-21 21:34:37,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:37,719 INFO L482 AbstractCegarLoop]: Abstraction has 5511 states and 18615 transitions. [2021-05-21 21:34:37,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:37,719 INFO L276 IsEmpty]: Start isEmpty. Operand 5511 states and 18615 transitions. [2021-05-21 21:34:37,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:37,726 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:37,726 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:37,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-05-21 21:34:37,726 INFO L430 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:37,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:37,726 INFO L82 PathProgramCache]: Analyzing trace with hash 438157950, now seen corresponding path program 407 times [2021-05-21 21:34:37,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:37,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926232072] [2021-05-21 21:34:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:37,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:37,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926232072] [2021-05-21 21:34:37,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926232072] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:37,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:37,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:37,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500707051] [2021-05-21 21:34:37,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:37,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:37,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:37,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:37,882 INFO L87 Difference]: Start difference. First operand 5511 states and 18615 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:39,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:39,061 INFO L93 Difference]: Finished difference Result 5859 states and 19550 transitions. [2021-05-21 21:34:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:34:39,062 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:39,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:39,071 INFO L225 Difference]: With dead ends: 5859 [2021-05-21 21:34:39,071 INFO L226 Difference]: Without dead ends: 5799 [2021-05-21 21:34:39,071 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 801.9ms TimeCoverageRelationStatistics Valid=270, Invalid=2486, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 21:34:39,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2021-05-21 21:34:39,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 5509. [2021-05-21 21:34:39,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5509 states, 5508 states have (on average 3.378540305010893) internal successors, (18609), 5508 states have internal predecessors, (18609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:39,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5509 states to 5509 states and 18609 transitions. [2021-05-21 21:34:39,170 INFO L78 Accepts]: Start accepts. Automaton has 5509 states and 18609 transitions. Word has length 39 [2021-05-21 21:34:39,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:39,170 INFO L482 AbstractCegarLoop]: Abstraction has 5509 states and 18609 transitions. [2021-05-21 21:34:39,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:39,170 INFO L276 IsEmpty]: Start isEmpty. Operand 5509 states and 18609 transitions. [2021-05-21 21:34:39,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:39,176 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:39,177 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:39,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-05-21 21:34:39,177 INFO L430 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:39,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:39,177 INFO L82 PathProgramCache]: Analyzing trace with hash 370413070, now seen corresponding path program 408 times [2021-05-21 21:34:39,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:39,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649767250] [2021-05-21 21:34:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:39,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:39,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649767250] [2021-05-21 21:34:39,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649767250] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:39,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:39,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:39,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452187739] [2021-05-21 21:34:39,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:39,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:39,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:39,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:39,331 INFO L87 Difference]: Start difference. First operand 5509 states and 18609 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:40,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:40,395 INFO L93 Difference]: Finished difference Result 5814 states and 19441 transitions. [2021-05-21 21:34:40,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-21 21:34:40,396 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:40,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:40,405 INFO L225 Difference]: With dead ends: 5814 [2021-05-21 21:34:40,405 INFO L226 Difference]: Without dead ends: 5771 [2021-05-21 21:34:40,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 693.3ms TimeCoverageRelationStatistics Valid=241, Invalid=2309, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:34:40,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5771 states. [2021-05-21 21:34:40,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5771 to 5515. [2021-05-21 21:34:40,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5515 states, 5514 states have (on average 3.377221617700399) internal successors, (18622), 5514 states have internal predecessors, (18622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:40,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 18622 transitions. [2021-05-21 21:34:40,492 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 18622 transitions. Word has length 39 [2021-05-21 21:34:40,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:40,492 INFO L482 AbstractCegarLoop]: Abstraction has 5515 states and 18622 transitions. [2021-05-21 21:34:40,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:40,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 18622 transitions. [2021-05-21 21:34:40,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:40,499 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:40,499 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:40,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-05-21 21:34:40,499 INFO L430 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:40,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:40,500 INFO L82 PathProgramCache]: Analyzing trace with hash 2120520206, now seen corresponding path program 409 times [2021-05-21 21:34:40,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:40,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973334300] [2021-05-21 21:34:40,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:40,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:40,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973334300] [2021-05-21 21:34:40,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973334300] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:40,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:40,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:40,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271193042] [2021-05-21 21:34:40,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:40,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:40,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:40,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:40,656 INFO L87 Difference]: Start difference. First operand 5515 states and 18622 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:41,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:41,740 INFO L93 Difference]: Finished difference Result 5897 states and 19623 transitions. [2021-05-21 21:34:41,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:34:41,740 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:41,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:41,748 INFO L225 Difference]: With dead ends: 5897 [2021-05-21 21:34:41,748 INFO L226 Difference]: Without dead ends: 5785 [2021-05-21 21:34:41,748 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 698.8ms TimeCoverageRelationStatistics Valid=254, Invalid=2398, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:34:41,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5785 states. [2021-05-21 21:34:41,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5785 to 5515. [2021-05-21 21:34:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5515 states, 5514 states have (on average 3.3737758433079432) internal successors, (18603), 5514 states have internal predecessors, (18603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 18603 transitions. [2021-05-21 21:34:41,822 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 18603 transitions. Word has length 39 [2021-05-21 21:34:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:41,822 INFO L482 AbstractCegarLoop]: Abstraction has 5515 states and 18603 transitions. [2021-05-21 21:34:41,822 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:41,822 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 18603 transitions. [2021-05-21 21:34:41,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:41,829 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:41,829 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:41,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-05-21 21:34:41,829 INFO L430 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:41,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:41,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1557228688, now seen corresponding path program 410 times [2021-05-21 21:34:41,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:41,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971335590] [2021-05-21 21:34:41,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:41,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:41,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:41,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971335590] [2021-05-21 21:34:41,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971335590] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:41,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:41,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:41,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583336768] [2021-05-21 21:34:41,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:41,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:41,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:41,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:41,982 INFO L87 Difference]: Start difference. First operand 5515 states and 18603 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:42,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:42,982 INFO L93 Difference]: Finished difference Result 5816 states and 19421 transitions. [2021-05-21 21:34:42,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 21:34:42,983 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:42,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:42,992 INFO L225 Difference]: With dead ends: 5816 [2021-05-21 21:34:42,992 INFO L226 Difference]: Without dead ends: 5770 [2021-05-21 21:34:42,992 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 647.8ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:34:43,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5770 states. [2021-05-21 21:34:43,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5770 to 5507. [2021-05-21 21:34:43,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5507 states, 5506 states have (on average 3.3764983654195424) internal successors, (18591), 5506 states have internal predecessors, (18591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:43,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5507 states to 5507 states and 18591 transitions. [2021-05-21 21:34:43,075 INFO L78 Accepts]: Start accepts. Automaton has 5507 states and 18591 transitions. Word has length 39 [2021-05-21 21:34:43,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:43,075 INFO L482 AbstractCegarLoop]: Abstraction has 5507 states and 18591 transitions. [2021-05-21 21:34:43,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:43,075 INFO L276 IsEmpty]: Start isEmpty. Operand 5507 states and 18591 transitions. [2021-05-21 21:34:43,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:43,083 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:43,083 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:43,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2021-05-21 21:34:43,083 INFO L430 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:43,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:43,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1302671118, now seen corresponding path program 411 times [2021-05-21 21:34:43,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:43,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861858071] [2021-05-21 21:34:43,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:43,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:43,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861858071] [2021-05-21 21:34:43,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861858071] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:43,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:43,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:43,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213231392] [2021-05-21 21:34:43,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:43,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:43,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:43,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:43,240 INFO L87 Difference]: Start difference. First operand 5507 states and 18591 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:44,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:44,232 INFO L93 Difference]: Finished difference Result 5800 states and 19385 transitions. [2021-05-21 21:34:44,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:34:44,232 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:44,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:44,242 INFO L225 Difference]: With dead ends: 5800 [2021-05-21 21:34:44,242 INFO L226 Difference]: Without dead ends: 5725 [2021-05-21 21:34:44,242 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 636.4ms TimeCoverageRelationStatistics Valid=228, Invalid=2124, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 21:34:44,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5725 states. [2021-05-21 21:34:44,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5725 to 5477. [2021-05-21 21:34:44,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5477 states, 5476 states have (on average 3.3823959094229363) internal successors, (18522), 5476 states have internal predecessors, (18522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:44,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5477 states to 5477 states and 18522 transitions. [2021-05-21 21:34:44,324 INFO L78 Accepts]: Start accepts. Automaton has 5477 states and 18522 transitions. Word has length 39 [2021-05-21 21:34:44,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:44,324 INFO L482 AbstractCegarLoop]: Abstraction has 5477 states and 18522 transitions. [2021-05-21 21:34:44,324 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:44,324 INFO L276 IsEmpty]: Start isEmpty. Operand 5477 states and 18522 transitions. [2021-05-21 21:34:44,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:44,331 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:44,331 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:44,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2021-05-21 21:34:44,331 INFO L430 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:44,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:44,331 INFO L82 PathProgramCache]: Analyzing trace with hash 19968000, now seen corresponding path program 412 times [2021-05-21 21:34:44,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:44,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624550046] [2021-05-21 21:34:44,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:44,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:44,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624550046] [2021-05-21 21:34:44,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624550046] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:44,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:44,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:44,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235484332] [2021-05-21 21:34:44,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:44,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:44,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:44,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:44,485 INFO L87 Difference]: Start difference. First operand 5477 states and 18522 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:45,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:45,432 INFO L93 Difference]: Finished difference Result 5735 states and 19239 transitions. [2021-05-21 21:34:45,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 21:34:45,432 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:45,441 INFO L225 Difference]: With dead ends: 5735 [2021-05-21 21:34:45,441 INFO L226 Difference]: Without dead ends: 5677 [2021-05-21 21:34:45,442 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 605.9ms TimeCoverageRelationStatistics Valid=212, Invalid=1950, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:34:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5677 states. [2021-05-21 21:34:45,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5677 to 5476. [2021-05-21 21:34:45,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5476 states, 5475 states have (on average 3.382648401826484) internal successors, (18520), 5475 states have internal predecessors, (18520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5476 states to 5476 states and 18520 transitions. [2021-05-21 21:34:45,521 INFO L78 Accepts]: Start accepts. Automaton has 5476 states and 18520 transitions. Word has length 39 [2021-05-21 21:34:45,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:45,521 INFO L482 AbstractCegarLoop]: Abstraction has 5476 states and 18520 transitions. [2021-05-21 21:34:45,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:45,521 INFO L276 IsEmpty]: Start isEmpty. Operand 5476 states and 18520 transitions. [2021-05-21 21:34:45,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:45,528 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:45,528 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:45,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2021-05-21 21:34:45,528 INFO L430 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:45,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:45,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1358724588, now seen corresponding path program 413 times [2021-05-21 21:34:45,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:45,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061238842] [2021-05-21 21:34:45,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:45,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:45,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:45,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061238842] [2021-05-21 21:34:45,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061238842] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:45,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:45,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:45,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995981020] [2021-05-21 21:34:45,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:45,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:45,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:45,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:45,684 INFO L87 Difference]: Start difference. First operand 5476 states and 18520 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:46,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:46,627 INFO L93 Difference]: Finished difference Result 5675 states and 19108 transitions. [2021-05-21 21:34:46,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:34:46,627 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:46,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:46,636 INFO L225 Difference]: With dead ends: 5675 [2021-05-21 21:34:46,636 INFO L226 Difference]: Without dead ends: 5575 [2021-05-21 21:34:46,636 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 582.1ms TimeCoverageRelationStatistics Valid=205, Invalid=1957, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:34:46,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5575 states. [2021-05-21 21:34:46,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5575 to 5437. [2021-05-21 21:34:46,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5436 states have (on average 3.391096394407653) internal successors, (18434), 5436 states have internal predecessors, (18434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:46,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 18434 transitions. [2021-05-21 21:34:46,713 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 18434 transitions. Word has length 39 [2021-05-21 21:34:46,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:46,713 INFO L482 AbstractCegarLoop]: Abstraction has 5437 states and 18434 transitions. [2021-05-21 21:34:46,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:46,713 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 18434 transitions. [2021-05-21 21:34:46,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:46,720 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:46,720 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:46,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2021-05-21 21:34:46,720 INFO L430 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:46,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:46,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1578517338, now seen corresponding path program 414 times [2021-05-21 21:34:46,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:46,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030282659] [2021-05-21 21:34:46,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:46,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:46,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:46,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030282659] [2021-05-21 21:34:46,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030282659] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:46,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:46,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:46,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759831866] [2021-05-21 21:34:46,878 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:46,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:46,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:46,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:46,878 INFO L87 Difference]: Start difference. First operand 5437 states and 18434 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:48,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:48,542 INFO L93 Difference]: Finished difference Result 7983 states and 26964 transitions. [2021-05-21 21:34:48,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-21 21:34:48,542 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:48,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:48,555 INFO L225 Difference]: With dead ends: 7983 [2021-05-21 21:34:48,555 INFO L226 Difference]: Without dead ends: 7940 [2021-05-21 21:34:48,556 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 939.4ms TimeCoverageRelationStatistics Valid=362, Invalid=3928, Unknown=0, NotChecked=0, Total=4290 [2021-05-21 21:34:48,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7940 states. [2021-05-21 21:34:48,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7940 to 5471. [2021-05-21 21:34:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5471 states, 5470 states have (on average 3.389579524680073) internal successors, (18541), 5470 states have internal predecessors, (18541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:48,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5471 states to 5471 states and 18541 transitions. [2021-05-21 21:34:48,667 INFO L78 Accepts]: Start accepts. Automaton has 5471 states and 18541 transitions. Word has length 39 [2021-05-21 21:34:48,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:48,667 INFO L482 AbstractCegarLoop]: Abstraction has 5471 states and 18541 transitions. [2021-05-21 21:34:48,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:48,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5471 states and 18541 transitions. [2021-05-21 21:34:48,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:48,674 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:48,674 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:48,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2021-05-21 21:34:48,674 INFO L430 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:48,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:48,674 INFO L82 PathProgramCache]: Analyzing trace with hash -202080964, now seen corresponding path program 415 times [2021-05-21 21:34:48,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:48,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758765212] [2021-05-21 21:34:48,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:48,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:48,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758765212] [2021-05-21 21:34:48,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758765212] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:48,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:48,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:48,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256387989] [2021-05-21 21:34:48,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:48,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:48,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:48,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:48,830 INFO L87 Difference]: Start difference. First operand 5471 states and 18541 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:50,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:50,737 INFO L93 Difference]: Finished difference Result 8808 states and 29786 transitions. [2021-05-21 21:34:50,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-21 21:34:50,738 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:50,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:50,753 INFO L225 Difference]: With dead ends: 8808 [2021-05-21 21:34:50,753 INFO L226 Difference]: Without dead ends: 8756 [2021-05-21 21:34:50,754 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 1058.7ms TimeCoverageRelationStatistics Valid=405, Invalid=4707, Unknown=0, NotChecked=0, Total=5112 [2021-05-21 21:34:50,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8756 states. [2021-05-21 21:34:50,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8756 to 5437. [2021-05-21 21:34:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5436 states have (on average 3.391096394407653) internal successors, (18434), 5436 states have internal predecessors, (18434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 18434 transitions. [2021-05-21 21:34:50,852 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 18434 transitions. Word has length 39 [2021-05-21 21:34:50,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:50,852 INFO L482 AbstractCegarLoop]: Abstraction has 5437 states and 18434 transitions. [2021-05-21 21:34:50,852 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:50,852 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 18434 transitions. [2021-05-21 21:34:50,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:50,859 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:50,859 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:50,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2021-05-21 21:34:50,859 INFO L430 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:50,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:50,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1797966388, now seen corresponding path program 416 times [2021-05-21 21:34:50,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:50,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296478166] [2021-05-21 21:34:50,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:51,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:51,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:51,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296478166] [2021-05-21 21:34:51,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296478166] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:51,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:51,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:51,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113746165] [2021-05-21 21:34:51,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:51,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:51,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:51,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:51,041 INFO L87 Difference]: Start difference. First operand 5437 states and 18434 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:52,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:52,363 INFO L93 Difference]: Finished difference Result 7494 states and 25129 transitions. [2021-05-21 21:34:52,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-21 21:34:52,363 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:52,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:52,376 INFO L225 Difference]: With dead ends: 7494 [2021-05-21 21:34:52,376 INFO L226 Difference]: Without dead ends: 7439 [2021-05-21 21:34:52,377 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 715.3ms TimeCoverageRelationStatistics Valid=286, Invalid=2794, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:34:52,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7439 states. [2021-05-21 21:34:52,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7439 to 5465. [2021-05-21 21:34:52,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5465 states, 5464 states have (on average 3.390190336749634) internal successors, (18524), 5464 states have internal predecessors, (18524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:52,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5465 states to 5465 states and 18524 transitions. [2021-05-21 21:34:52,476 INFO L78 Accepts]: Start accepts. Automaton has 5465 states and 18524 transitions. Word has length 39 [2021-05-21 21:34:52,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:52,476 INFO L482 AbstractCegarLoop]: Abstraction has 5465 states and 18524 transitions. [2021-05-21 21:34:52,476 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:52,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5465 states and 18524 transitions. [2021-05-21 21:34:52,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:52,484 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:52,484 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:52,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2021-05-21 21:34:52,484 INFO L430 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:52,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:52,484 INFO L82 PathProgramCache]: Analyzing trace with hash -625314166, now seen corresponding path program 417 times [2021-05-21 21:34:52,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:52,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927882865] [2021-05-21 21:34:52,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:52,653 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:52,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927882865] [2021-05-21 21:34:52,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927882865] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:52,654 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:52,654 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:52,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637674931] [2021-05-21 21:34:52,654 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:52,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:52,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:52,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:52,654 INFO L87 Difference]: Start difference. First operand 5465 states and 18524 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:54,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:54,194 INFO L93 Difference]: Finished difference Result 8175 states and 27493 transitions. [2021-05-21 21:34:54,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-21 21:34:54,195 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:54,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:54,208 INFO L225 Difference]: With dead ends: 8175 [2021-05-21 21:34:54,209 INFO L226 Difference]: Without dead ends: 8115 [2021-05-21 21:34:54,209 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 835.4ms TimeCoverageRelationStatistics Valid=317, Invalid=3343, Unknown=0, NotChecked=0, Total=3660 [2021-05-21 21:34:54,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8115 states. [2021-05-21 21:34:54,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8115 to 5463. [2021-05-21 21:34:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5463 states, 5462 states have (on average 3.3905162943976563) internal successors, (18519), 5462 states have internal predecessors, (18519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 18519 transitions. [2021-05-21 21:34:54,310 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 18519 transitions. Word has length 39 [2021-05-21 21:34:54,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:54,310 INFO L482 AbstractCegarLoop]: Abstraction has 5463 states and 18519 transitions. [2021-05-21 21:34:54,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:54,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 18519 transitions. [2021-05-21 21:34:54,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:54,318 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:54,318 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:54,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2021-05-21 21:34:54,318 INFO L430 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:54,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:54,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1792249528, now seen corresponding path program 418 times [2021-05-21 21:34:54,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:54,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881310050] [2021-05-21 21:34:54,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:54,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:54,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881310050] [2021-05-21 21:34:54,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881310050] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:54,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:54,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:54,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042266039] [2021-05-21 21:34:54,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:54,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:54,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:54,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:54,479 INFO L87 Difference]: Start difference. First operand 5463 states and 18519 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:55,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:55,786 INFO L93 Difference]: Finished difference Result 7463 states and 25083 transitions. [2021-05-21 21:34:55,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-21 21:34:55,787 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:55,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:55,798 INFO L225 Difference]: With dead ends: 7463 [2021-05-21 21:34:55,799 INFO L226 Difference]: Without dead ends: 7372 [2021-05-21 21:34:55,799 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 707.1ms TimeCoverageRelationStatistics Valid=271, Invalid=2699, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:34:55,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7372 states. [2021-05-21 21:34:55,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7372 to 5463. [2021-05-21 21:34:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5463 states, 5462 states have (on average 3.3894177956792384) internal successors, (18513), 5462 states have internal predecessors, (18513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:55,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 18513 transitions. [2021-05-21 21:34:55,903 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 18513 transitions. Word has length 39 [2021-05-21 21:34:55,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:55,903 INFO L482 AbstractCegarLoop]: Abstraction has 5463 states and 18513 transitions. [2021-05-21 21:34:55,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:55,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 18513 transitions. [2021-05-21 21:34:55,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:55,909 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:55,909 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:55,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2021-05-21 21:34:55,909 INFO L430 AbstractCegarLoop]: === Iteration 419 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:55,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:55,910 INFO L82 PathProgramCache]: Analyzing trace with hash 289767322, now seen corresponding path program 419 times [2021-05-21 21:34:55,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:55,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786685120] [2021-05-21 21:34:55,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:56,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:56,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:56,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786685120] [2021-05-21 21:34:56,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786685120] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:56,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:56,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:56,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300478869] [2021-05-21 21:34:56,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:56,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:56,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:56,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:56,064 INFO L87 Difference]: Start difference. First operand 5463 states and 18513 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:57,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:57,542 INFO L93 Difference]: Finished difference Result 8096 states and 27315 transitions. [2021-05-21 21:34:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-21 21:34:57,542 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:57,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:57,557 INFO L225 Difference]: With dead ends: 8096 [2021-05-21 21:34:57,557 INFO L226 Difference]: Without dead ends: 7980 [2021-05-21 21:34:57,557 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 776.9ms TimeCoverageRelationStatistics Valid=296, Invalid=3126, Unknown=0, NotChecked=0, Total=3422 [2021-05-21 21:34:57,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7980 states. [2021-05-21 21:34:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7980 to 5417. [2021-05-21 21:34:57,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5417 states, 5416 states have (on average 3.395125553914328) internal successors, (18388), 5416 states have internal predecessors, (18388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:57,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5417 states to 5417 states and 18388 transitions. [2021-05-21 21:34:57,657 INFO L78 Accepts]: Start accepts. Automaton has 5417 states and 18388 transitions. Word has length 39 [2021-05-21 21:34:57,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:57,657 INFO L482 AbstractCegarLoop]: Abstraction has 5417 states and 18388 transitions. [2021-05-21 21:34:57,657 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:57,657 INFO L276 IsEmpty]: Start isEmpty. Operand 5417 states and 18388 transitions. [2021-05-21 21:34:57,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:57,664 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:57,664 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:57,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable418 [2021-05-21 21:34:57,664 INFO L430 AbstractCegarLoop]: === Iteration 420 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:57,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:57,665 INFO L82 PathProgramCache]: Analyzing trace with hash 919000586, now seen corresponding path program 420 times [2021-05-21 21:34:57,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:57,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689566252] [2021-05-21 21:34:57,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:57,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:57,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:57,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689566252] [2021-05-21 21:34:57,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689566252] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:57,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:57,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:57,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767996540] [2021-05-21 21:34:57,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:57,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:57,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:57,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:57,824 INFO L87 Difference]: Start difference. First operand 5417 states and 18388 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:58,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:58,793 INFO L93 Difference]: Finished difference Result 5910 states and 19840 transitions. [2021-05-21 21:34:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:34:58,793 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:58,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:58,802 INFO L225 Difference]: With dead ends: 5910 [2021-05-21 21:34:58,802 INFO L226 Difference]: Without dead ends: 5843 [2021-05-21 21:34:58,803 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 606.7ms TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 21:34:58,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5843 states. [2021-05-21 21:34:58,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5843 to 5435. [2021-05-21 21:34:58,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5435 states, 5434 states have (on average 3.3925285241074716) internal successors, (18435), 5434 states have internal predecessors, (18435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:58,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5435 states to 5435 states and 18435 transitions. [2021-05-21 21:34:58,881 INFO L78 Accepts]: Start accepts. Automaton has 5435 states and 18435 transitions. Word has length 39 [2021-05-21 21:34:58,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:34:58,881 INFO L482 AbstractCegarLoop]: Abstraction has 5435 states and 18435 transitions. [2021-05-21 21:34:58,881 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:58,881 INFO L276 IsEmpty]: Start isEmpty. Operand 5435 states and 18435 transitions. [2021-05-21 21:34:58,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:34:58,888 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:34:58,888 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:34:58,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419 [2021-05-21 21:34:58,888 INFO L430 AbstractCegarLoop]: === Iteration 421 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:34:58,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:34:58,888 INFO L82 PathProgramCache]: Analyzing trace with hash 746857368, now seen corresponding path program 421 times [2021-05-21 21:34:58,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:34:58,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302171901] [2021-05-21 21:34:58,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:34:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:34:59,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:34:59,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:34:59,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302171901] [2021-05-21 21:34:59,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302171901] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:34:59,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:34:59,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:34:59,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349913902] [2021-05-21 21:34:59,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:34:59,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:34:59,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:34:59,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:34:59,043 INFO L87 Difference]: Start difference. First operand 5435 states and 18435 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:34:59,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:34:59,930 INFO L93 Difference]: Finished difference Result 5870 states and 19710 transitions. [2021-05-21 21:34:59,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 21:34:59,930 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:34:59,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:34:59,940 INFO L225 Difference]: With dead ends: 5870 [2021-05-21 21:34:59,940 INFO L226 Difference]: Without dead ends: 5807 [2021-05-21 21:34:59,940 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 580.3ms TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:34:59,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5807 states. [2021-05-21 21:35:00,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5807 to 5467. [2021-05-21 21:35:00,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5467 states, 5466 states have (on average 3.388035126234907) internal successors, (18519), 5466 states have internal predecessors, (18519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:00,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5467 states to 5467 states and 18519 transitions. [2021-05-21 21:35:00,025 INFO L78 Accepts]: Start accepts. Automaton has 5467 states and 18519 transitions. Word has length 39 [2021-05-21 21:35:00,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:00,025 INFO L482 AbstractCegarLoop]: Abstraction has 5467 states and 18519 transitions. [2021-05-21 21:35:00,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:00,025 INFO L276 IsEmpty]: Start isEmpty. Operand 5467 states and 18519 transitions. [2021-05-21 21:35:00,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:00,033 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:00,033 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:00,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable420 [2021-05-21 21:35:00,033 INFO L430 AbstractCegarLoop]: === Iteration 422 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:00,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:00,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1055976788, now seen corresponding path program 422 times [2021-05-21 21:35:00,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:00,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755714146] [2021-05-21 21:35:00,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:00,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:00,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:00,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755714146] [2021-05-21 21:35:00,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755714146] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:00,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:00,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:00,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061786339] [2021-05-21 21:35:00,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:00,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:00,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:00,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:00,191 INFO L87 Difference]: Start difference. First operand 5467 states and 18519 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:01,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:01,075 INFO L93 Difference]: Finished difference Result 5870 states and 19702 transitions. [2021-05-21 21:35:01,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:35:01,075 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:01,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:01,084 INFO L225 Difference]: With dead ends: 5870 [2021-05-21 21:35:01,084 INFO L226 Difference]: Without dead ends: 5735 [2021-05-21 21:35:01,085 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 567.9ms TimeCoverageRelationStatistics Valid=205, Invalid=1957, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:35:01,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5735 states. [2021-05-21 21:35:01,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5735 to 5423. [2021-05-21 21:35:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5423 states, 5422 states have (on average 3.3937661379564736) internal successors, (18401), 5422 states have internal predecessors, (18401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:01,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5423 states to 5423 states and 18401 transitions. [2021-05-21 21:35:01,161 INFO L78 Accepts]: Start accepts. Automaton has 5423 states and 18401 transitions. Word has length 39 [2021-05-21 21:35:01,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:01,161 INFO L482 AbstractCegarLoop]: Abstraction has 5423 states and 18401 transitions. [2021-05-21 21:35:01,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:01,161 INFO L276 IsEmpty]: Start isEmpty. Operand 5423 states and 18401 transitions. [2021-05-21 21:35:01,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:01,167 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:01,167 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:01,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable421 [2021-05-21 21:35:01,167 INFO L430 AbstractCegarLoop]: === Iteration 423 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:01,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:01,167 INFO L82 PathProgramCache]: Analyzing trace with hash 613513340, now seen corresponding path program 423 times [2021-05-21 21:35:01,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:01,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975746840] [2021-05-21 21:35:01,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:01,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:01,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975746840] [2021-05-21 21:35:01,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975746840] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:01,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:01,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:01,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202570577] [2021-05-21 21:35:01,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:01,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:01,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:01,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:01,324 INFO L87 Difference]: Start difference. First operand 5423 states and 18401 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:02,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:02,722 INFO L93 Difference]: Finished difference Result 5985 states and 20073 transitions. [2021-05-21 21:35:02,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-21 21:35:02,723 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:02,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:02,733 INFO L225 Difference]: With dead ends: 5985 [2021-05-21 21:35:02,733 INFO L226 Difference]: Without dead ends: 5918 [2021-05-21 21:35:02,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 974.1ms TimeCoverageRelationStatistics Valid=393, Invalid=3639, Unknown=0, NotChecked=0, Total=4032 [2021-05-21 21:35:02,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5918 states. [2021-05-21 21:35:02,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5918 to 5449. [2021-05-21 21:35:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5449 states, 5448 states have (on average 3.3906020558002936) internal successors, (18472), 5448 states have internal predecessors, (18472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:02,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5449 states to 5449 states and 18472 transitions. [2021-05-21 21:35:02,823 INFO L78 Accepts]: Start accepts. Automaton has 5449 states and 18472 transitions. Word has length 39 [2021-05-21 21:35:02,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:02,823 INFO L482 AbstractCegarLoop]: Abstraction has 5449 states and 18472 transitions. [2021-05-21 21:35:02,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:02,823 INFO L276 IsEmpty]: Start isEmpty. Operand 5449 states and 18472 transitions. [2021-05-21 21:35:02,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:02,831 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:02,831 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:02,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable422 [2021-05-21 21:35:02,831 INFO L430 AbstractCegarLoop]: === Iteration 424 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:02,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:02,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1106102630, now seen corresponding path program 424 times [2021-05-21 21:35:02,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:02,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681057861] [2021-05-21 21:35:02,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:03,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:03,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681057861] [2021-05-21 21:35:03,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681057861] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:03,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:03,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:03,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197070917] [2021-05-21 21:35:03,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:03,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:03,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:03,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:03,026 INFO L87 Difference]: Start difference. First operand 5449 states and 18472 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:04,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:04,703 INFO L93 Difference]: Finished difference Result 6109 states and 20370 transitions. [2021-05-21 21:35:04,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-21 21:35:04,703 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:04,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:04,713 INFO L225 Difference]: With dead ends: 6109 [2021-05-21 21:35:04,714 INFO L226 Difference]: Without dead ends: 6066 [2021-05-21 21:35:04,714 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1445 ImplicationChecksByTransitivity, 1160.5ms TimeCoverageRelationStatistics Valid=454, Invalid=4658, Unknown=0, NotChecked=0, Total=5112 [2021-05-21 21:35:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6066 states. [2021-05-21 21:35:04,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6066 to 5455. [2021-05-21 21:35:04,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5455 states, 5454 states have (on average 3.389255592225889) internal successors, (18485), 5454 states have internal predecessors, (18485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5455 states to 5455 states and 18485 transitions. [2021-05-21 21:35:04,807 INFO L78 Accepts]: Start accepts. Automaton has 5455 states and 18485 transitions. Word has length 39 [2021-05-21 21:35:04,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:04,807 INFO L482 AbstractCegarLoop]: Abstraction has 5455 states and 18485 transitions. [2021-05-21 21:35:04,807 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:04,807 INFO L276 IsEmpty]: Start isEmpty. Operand 5455 states and 18485 transitions. [2021-05-21 21:35:04,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:04,814 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:04,814 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:04,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable423 [2021-05-21 21:35:04,814 INFO L430 AbstractCegarLoop]: === Iteration 425 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:04,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1408266364, now seen corresponding path program 425 times [2021-05-21 21:35:04,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:04,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109781480] [2021-05-21 21:35:04,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:04,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:04,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:04,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109781480] [2021-05-21 21:35:04,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109781480] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:04,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:04,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:04,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573194826] [2021-05-21 21:35:04,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:04,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:04,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:04,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:04,986 INFO L87 Difference]: Start difference. First operand 5455 states and 18485 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:06,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:06,615 INFO L93 Difference]: Finished difference Result 6058 states and 20247 transitions. [2021-05-21 21:35:06,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-21 21:35:06,616 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:06,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:06,625 INFO L225 Difference]: With dead ends: 6058 [2021-05-21 21:35:06,625 INFO L226 Difference]: Without dead ends: 5994 [2021-05-21 21:35:06,626 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 1114.2ms TimeCoverageRelationStatistics Valid=423, Invalid=4269, Unknown=0, NotChecked=0, Total=4692 [2021-05-21 21:35:06,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5994 states. [2021-05-21 21:35:06,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5994 to 5433. [2021-05-21 21:35:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5433 states, 5432 states have (on average 3.393225331369661) internal successors, (18432), 5432 states have internal predecessors, (18432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:06,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5433 states to 5433 states and 18432 transitions. [2021-05-21 21:35:06,709 INFO L78 Accepts]: Start accepts. Automaton has 5433 states and 18432 transitions. Word has length 39 [2021-05-21 21:35:06,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:06,709 INFO L482 AbstractCegarLoop]: Abstraction has 5433 states and 18432 transitions. [2021-05-21 21:35:06,710 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:06,710 INFO L276 IsEmpty]: Start isEmpty. Operand 5433 states and 18432 transitions. [2021-05-21 21:35:06,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:06,716 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:06,717 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:06,717 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424 [2021-05-21 21:35:06,717 INFO L430 AbstractCegarLoop]: === Iteration 426 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:06,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:06,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2028700764, now seen corresponding path program 426 times [2021-05-21 21:35:06,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:06,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545074327] [2021-05-21 21:35:06,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:06,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:06,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545074327] [2021-05-21 21:35:06,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545074327] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:06,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:06,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:06,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489819220] [2021-05-21 21:35:06,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:06,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:06,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:06,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:06,899 INFO L87 Difference]: Start difference. First operand 5433 states and 18432 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:08,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:08,361 INFO L93 Difference]: Finished difference Result 5985 states and 20067 transitions. [2021-05-21 21:35:08,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-21 21:35:08,361 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:08,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:08,370 INFO L225 Difference]: With dead ends: 5985 [2021-05-21 21:35:08,370 INFO L226 Difference]: Without dead ends: 5918 [2021-05-21 21:35:08,370 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 1047.7ms TimeCoverageRelationStatistics Valid=392, Invalid=3768, Unknown=0, NotChecked=0, Total=4160 [2021-05-21 21:35:08,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5918 states. [2021-05-21 21:35:08,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5918 to 5457. [2021-05-21 21:35:08,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5457 states, 5456 states have (on average 3.3925953079178885) internal successors, (18510), 5456 states have internal predecessors, (18510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5457 states to 5457 states and 18510 transitions. [2021-05-21 21:35:08,445 INFO L78 Accepts]: Start accepts. Automaton has 5457 states and 18510 transitions. Word has length 39 [2021-05-21 21:35:08,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:08,446 INFO L482 AbstractCegarLoop]: Abstraction has 5457 states and 18510 transitions. [2021-05-21 21:35:08,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:08,446 INFO L276 IsEmpty]: Start isEmpty. Operand 5457 states and 18510 transitions. [2021-05-21 21:35:08,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:08,452 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:08,452 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:08,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable425 [2021-05-21 21:35:08,452 INFO L430 AbstractCegarLoop]: === Iteration 427 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:08,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:08,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1898105916, now seen corresponding path program 427 times [2021-05-21 21:35:08,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:08,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194964757] [2021-05-21 21:35:08,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:08,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:08,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:08,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194964757] [2021-05-21 21:35:08,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194964757] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:08,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:08,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:08,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361445077] [2021-05-21 21:35:08,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:08,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:08,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:08,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:08,610 INFO L87 Difference]: Start difference. First operand 5457 states and 18510 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:09,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:09,822 INFO L93 Difference]: Finished difference Result 5988 states and 20026 transitions. [2021-05-21 21:35:09,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-21 21:35:09,822 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:09,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:09,831 INFO L225 Difference]: With dead ends: 5988 [2021-05-21 21:35:09,831 INFO L226 Difference]: Without dead ends: 5925 [2021-05-21 21:35:09,832 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 845.0ms TimeCoverageRelationStatistics Valid=350, Invalid=3190, Unknown=0, NotChecked=0, Total=3540 [2021-05-21 21:35:09,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5925 states. [2021-05-21 21:35:09,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5925 to 5457. [2021-05-21 21:35:09,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5457 states, 5456 states have (on average 3.3918621700879767) internal successors, (18506), 5456 states have internal predecessors, (18506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:09,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5457 states to 5457 states and 18506 transitions. [2021-05-21 21:35:09,909 INFO L78 Accepts]: Start accepts. Automaton has 5457 states and 18506 transitions. Word has length 39 [2021-05-21 21:35:09,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:09,909 INFO L482 AbstractCegarLoop]: Abstraction has 5457 states and 18506 transitions. [2021-05-21 21:35:09,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:09,909 INFO L276 IsEmpty]: Start isEmpty. Operand 5457 states and 18506 transitions. [2021-05-21 21:35:09,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:09,916 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:09,916 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:09,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable426 [2021-05-21 21:35:09,916 INFO L430 AbstractCegarLoop]: === Iteration 428 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:09,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:09,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1762427324, now seen corresponding path program 428 times [2021-05-21 21:35:09,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:09,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896463453] [2021-05-21 21:35:09,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:10,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:10,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:10,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896463453] [2021-05-21 21:35:10,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896463453] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:10,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:10,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:10,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259620482] [2021-05-21 21:35:10,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:10,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:10,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:10,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:10,074 INFO L87 Difference]: Start difference. First operand 5457 states and 18506 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:11,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:11,774 INFO L93 Difference]: Finished difference Result 6136 states and 20400 transitions. [2021-05-21 21:35:11,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-21 21:35:11,774 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:11,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:11,784 INFO L225 Difference]: With dead ends: 6136 [2021-05-21 21:35:11,784 INFO L226 Difference]: Without dead ends: 6093 [2021-05-21 21:35:11,785 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 1128.0ms TimeCoverageRelationStatistics Valid=429, Invalid=4541, Unknown=0, NotChecked=0, Total=4970 [2021-05-21 21:35:11,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6093 states. [2021-05-21 21:35:11,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6093 to 5469. [2021-05-21 21:35:11,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5469 states, 5468 states have (on average 3.391002194586686) internal successors, (18542), 5468 states have internal predecessors, (18542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:11,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5469 states to 5469 states and 18542 transitions. [2021-05-21 21:35:11,876 INFO L78 Accepts]: Start accepts. Automaton has 5469 states and 18542 transitions. Word has length 39 [2021-05-21 21:35:11,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:11,876 INFO L482 AbstractCegarLoop]: Abstraction has 5469 states and 18542 transitions. [2021-05-21 21:35:11,876 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:11,876 INFO L276 IsEmpty]: Start isEmpty. Operand 5469 states and 18542 transitions. [2021-05-21 21:35:11,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:11,884 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:11,884 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:11,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable427 [2021-05-21 21:35:11,884 INFO L430 AbstractCegarLoop]: === Iteration 429 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:11,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:11,884 INFO L82 PathProgramCache]: Analyzing trace with hash -18170978, now seen corresponding path program 429 times [2021-05-21 21:35:11,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:11,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023095302] [2021-05-21 21:35:11,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:12,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:12,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:12,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023095302] [2021-05-21 21:35:12,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023095302] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:12,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:12,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:12,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393933383] [2021-05-21 21:35:12,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:12,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:12,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:12,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:12,060 INFO L87 Difference]: Start difference. First operand 5469 states and 18542 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:13,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:13,753 INFO L93 Difference]: Finished difference Result 6124 states and 20362 transitions. [2021-05-21 21:35:13,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-21 21:35:13,754 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:13,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:13,763 INFO L225 Difference]: With dead ends: 6124 [2021-05-21 21:35:13,763 INFO L226 Difference]: Without dead ends: 6072 [2021-05-21 21:35:13,764 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 1193.6ms TimeCoverageRelationStatistics Valid=418, Invalid=4412, Unknown=0, NotChecked=0, Total=4830 [2021-05-21 21:35:13,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6072 states. [2021-05-21 21:35:13,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6072 to 5461. [2021-05-21 21:35:13,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5461 states, 5460 states have (on average 3.3923076923076922) internal successors, (18522), 5460 states have internal predecessors, (18522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:13,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5461 states to 5461 states and 18522 transitions. [2021-05-21 21:35:13,848 INFO L78 Accepts]: Start accepts. Automaton has 5461 states and 18522 transitions. Word has length 39 [2021-05-21 21:35:13,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:13,848 INFO L482 AbstractCegarLoop]: Abstraction has 5461 states and 18522 transitions. [2021-05-21 21:35:13,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:13,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5461 states and 18522 transitions. [2021-05-21 21:35:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:13,856 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:13,856 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:13,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable428 [2021-05-21 21:35:13,856 INFO L430 AbstractCegarLoop]: === Iteration 430 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:13,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:13,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1614056402, now seen corresponding path program 430 times [2021-05-21 21:35:13,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:13,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227666520] [2021-05-21 21:35:13,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:14,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:14,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:14,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227666520] [2021-05-21 21:35:14,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227666520] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:14,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:14,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:14,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117271855] [2021-05-21 21:35:14,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:14,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:14,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:14,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:14,014 INFO L87 Difference]: Start difference. First operand 5461 states and 18522 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:15,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:15,242 INFO L93 Difference]: Finished difference Result 6057 states and 20163 transitions. [2021-05-21 21:35:15,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-21 21:35:15,242 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:15,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:15,252 INFO L225 Difference]: With dead ends: 6057 [2021-05-21 21:35:15,252 INFO L226 Difference]: Without dead ends: 6002 [2021-05-21 21:35:15,252 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 867.0ms TimeCoverageRelationStatistics Valid=349, Invalid=3191, Unknown=0, NotChecked=0, Total=3540 [2021-05-21 21:35:15,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2021-05-21 21:35:15,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 5463. [2021-05-21 21:35:15,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5463 states, 5462 states have (on average 3.3916147931160747) internal successors, (18525), 5462 states have internal predecessors, (18525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:15,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 18525 transitions. [2021-05-21 21:35:15,336 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 18525 transitions. Word has length 39 [2021-05-21 21:35:15,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:15,336 INFO L482 AbstractCegarLoop]: Abstraction has 5463 states and 18525 transitions. [2021-05-21 21:35:15,336 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:15,336 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 18525 transitions. [2021-05-21 21:35:15,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:15,343 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:15,343 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:15,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable429 [2021-05-21 21:35:15,343 INFO L430 AbstractCegarLoop]: === Iteration 431 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:15,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:15,344 INFO L82 PathProgramCache]: Analyzing trace with hash -441404180, now seen corresponding path program 431 times [2021-05-21 21:35:15,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:15,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079110482] [2021-05-21 21:35:15,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:15,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:15,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079110482] [2021-05-21 21:35:15,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079110482] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:15,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:15,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:15,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233945859] [2021-05-21 21:35:15,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:15,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:15,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:15,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:15,529 INFO L87 Difference]: Start difference. First operand 5463 states and 18525 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:16,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:16,654 INFO L93 Difference]: Finished difference Result 5995 states and 20018 transitions. [2021-05-21 21:35:16,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-21 21:35:16,655 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:16,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:16,665 INFO L225 Difference]: With dead ends: 5995 [2021-05-21 21:35:16,665 INFO L226 Difference]: Without dead ends: 5949 [2021-05-21 21:35:16,665 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 816.3ms TimeCoverageRelationStatistics Valid=308, Invalid=2772, Unknown=0, NotChecked=0, Total=3080 [2021-05-21 21:35:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5949 states. [2021-05-21 21:35:16,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5949 to 5467. [2021-05-21 21:35:16,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5467 states, 5466 states have (on average 3.390596414196853) internal successors, (18533), 5466 states have internal predecessors, (18533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:16,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5467 states to 5467 states and 18533 transitions. [2021-05-21 21:35:16,751 INFO L78 Accepts]: Start accepts. Automaton has 5467 states and 18533 transitions. Word has length 39 [2021-05-21 21:35:16,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:16,751 INFO L482 AbstractCegarLoop]: Abstraction has 5467 states and 18533 transitions. [2021-05-21 21:35:16,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:16,751 INFO L276 IsEmpty]: Start isEmpty. Operand 5467 states and 18533 transitions. [2021-05-21 21:35:16,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:16,759 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:16,759 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:16,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable430 [2021-05-21 21:35:16,759 INFO L430 AbstractCegarLoop]: === Iteration 432 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:16,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:16,759 INFO L82 PathProgramCache]: Analyzing trace with hash -688870342, now seen corresponding path program 432 times [2021-05-21 21:35:16,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:16,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042080886] [2021-05-21 21:35:16,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:16,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:16,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042080886] [2021-05-21 21:35:16,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042080886] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:16,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:16,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:16,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142833933] [2021-05-21 21:35:16,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:16,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:16,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:16,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:16,917 INFO L87 Difference]: Start difference. First operand 5467 states and 18533 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:18,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:18,091 INFO L93 Difference]: Finished difference Result 5988 states and 19995 transitions. [2021-05-21 21:35:18,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-21 21:35:18,091 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:18,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:18,101 INFO L225 Difference]: With dead ends: 5988 [2021-05-21 21:35:18,101 INFO L226 Difference]: Without dead ends: 5939 [2021-05-21 21:35:18,101 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 837.4ms TimeCoverageRelationStatistics Valid=321, Invalid=2871, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 21:35:18,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5939 states. [2021-05-21 21:35:18,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5939 to 5457. [2021-05-21 21:35:18,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5457 states, 5456 states have (on average 3.393328445747801) internal successors, (18514), 5456 states have internal predecessors, (18514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:18,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5457 states to 5457 states and 18514 transitions. [2021-05-21 21:35:18,180 INFO L78 Accepts]: Start accepts. Automaton has 5457 states and 18514 transitions. Word has length 39 [2021-05-21 21:35:18,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:18,180 INFO L482 AbstractCegarLoop]: Abstraction has 5457 states and 18514 transitions. [2021-05-21 21:35:18,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:18,181 INFO L276 IsEmpty]: Start isEmpty. Operand 5457 states and 18514 transitions. [2021-05-21 21:35:18,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:18,188 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:18,188 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:18,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable431 [2021-05-21 21:35:18,188 INFO L430 AbstractCegarLoop]: === Iteration 433 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:18,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:18,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1329939366, now seen corresponding path program 433 times [2021-05-21 21:35:18,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:18,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478301697] [2021-05-21 21:35:18,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:18,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:18,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:18,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478301697] [2021-05-21 21:35:18,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478301697] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:18,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:18,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:18,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903245961] [2021-05-21 21:35:18,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:18,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:18,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:18,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:18,347 INFO L87 Difference]: Start difference. First operand 5457 states and 18514 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:19,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:19,639 INFO L93 Difference]: Finished difference Result 5919 states and 19880 transitions. [2021-05-21 21:35:19,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:35:19,639 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:19,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:19,649 INFO L225 Difference]: With dead ends: 5919 [2021-05-21 21:35:19,650 INFO L226 Difference]: Without dead ends: 5852 [2021-05-21 21:35:19,650 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 876.3ms TimeCoverageRelationStatistics Valid=329, Invalid=3093, Unknown=0, NotChecked=0, Total=3422 [2021-05-21 21:35:19,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5852 states. [2021-05-21 21:35:19,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5852 to 5475. [2021-05-21 21:35:19,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5475 states, 5474 states have (on average 3.390938984289368) internal successors, (18562), 5474 states have internal predecessors, (18562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 18562 transitions. [2021-05-21 21:35:19,732 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 18562 transitions. Word has length 39 [2021-05-21 21:35:19,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:19,732 INFO L482 AbstractCegarLoop]: Abstraction has 5475 states and 18562 transitions. [2021-05-21 21:35:19,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:19,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 18562 transitions. [2021-05-21 21:35:19,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:19,739 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:19,739 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:19,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable432 [2021-05-21 21:35:19,739 INFO L430 AbstractCegarLoop]: === Iteration 434 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:19,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:19,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1245411960, now seen corresponding path program 434 times [2021-05-21 21:35:19,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:19,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636415234] [2021-05-21 21:35:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:19,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:19,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636415234] [2021-05-21 21:35:19,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636415234] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:19,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:19,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:19,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347851041] [2021-05-21 21:35:19,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:19,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:19,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:19,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:19,899 INFO L87 Difference]: Start difference. First operand 5475 states and 18562 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:21,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:21,454 INFO L93 Difference]: Finished difference Result 6037 states and 20158 transitions. [2021-05-21 21:35:21,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-21 21:35:21,454 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:21,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:21,463 INFO L225 Difference]: With dead ends: 6037 [2021-05-21 21:35:21,463 INFO L226 Difference]: Without dead ends: 5994 [2021-05-21 21:35:21,464 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1138 ImplicationChecksByTransitivity, 1028.6ms TimeCoverageRelationStatistics Valid=381, Invalid=3909, Unknown=0, NotChecked=0, Total=4290 [2021-05-21 21:35:21,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5994 states. [2021-05-21 21:35:21,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5994 to 5481. [2021-05-21 21:35:21,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5481 states, 5480 states have (on average 3.3895985401459856) internal successors, (18575), 5480 states have internal predecessors, (18575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:21,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 18575 transitions. [2021-05-21 21:35:21,544 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 18575 transitions. Word has length 39 [2021-05-21 21:35:21,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:21,544 INFO L482 AbstractCegarLoop]: Abstraction has 5481 states and 18575 transitions. [2021-05-21 21:35:21,544 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:21,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 18575 transitions. [2021-05-21 21:35:21,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:21,551 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:21,551 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:21,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable433 [2021-05-21 21:35:21,551 INFO L430 AbstractCegarLoop]: === Iteration 435 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:21,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:21,551 INFO L82 PathProgramCache]: Analyzing trace with hash -535186342, now seen corresponding path program 435 times [2021-05-21 21:35:21,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:21,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352876460] [2021-05-21 21:35:21,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:21,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:21,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:21,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352876460] [2021-05-21 21:35:21,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352876460] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:21,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:21,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:21,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106060261] [2021-05-21 21:35:21,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:21,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:21,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:21,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:21,709 INFO L87 Difference]: Start difference. First operand 5481 states and 18575 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:23,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:23,230 INFO L93 Difference]: Finished difference Result 5986 states and 20035 transitions. [2021-05-21 21:35:23,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-21 21:35:23,231 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:23,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:23,240 INFO L225 Difference]: With dead ends: 5986 [2021-05-21 21:35:23,240 INFO L226 Difference]: Without dead ends: 5922 [2021-05-21 21:35:23,240 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 985.0ms TimeCoverageRelationStatistics Valid=350, Invalid=3556, Unknown=0, NotChecked=0, Total=3906 [2021-05-21 21:35:23,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5922 states. [2021-05-21 21:35:23,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5922 to 5457. [2021-05-21 21:35:23,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5457 states, 5456 states have (on average 3.393328445747801) internal successors, (18514), 5456 states have internal predecessors, (18514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:23,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5457 states to 5457 states and 18514 transitions. [2021-05-21 21:35:23,320 INFO L78 Accepts]: Start accepts. Automaton has 5457 states and 18514 transitions. Word has length 39 [2021-05-21 21:35:23,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:23,320 INFO L482 AbstractCegarLoop]: Abstraction has 5457 states and 18514 transitions. [2021-05-21 21:35:23,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:23,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5457 states and 18514 transitions. [2021-05-21 21:35:23,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:23,327 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:23,327 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:23,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable434 [2021-05-21 21:35:23,327 INFO L430 AbstractCegarLoop]: === Iteration 436 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:23,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:23,328 INFO L82 PathProgramCache]: Analyzing trace with hash 769668954, now seen corresponding path program 436 times [2021-05-21 21:35:23,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:23,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815976845] [2021-05-21 21:35:23,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:23,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:23,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:23,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815976845] [2021-05-21 21:35:23,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815976845] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:23,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:23,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:23,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005789237] [2021-05-21 21:35:23,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:23,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:23,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:23,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:23,488 INFO L87 Difference]: Start difference. First operand 5457 states and 18514 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:24,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:24,673 INFO L93 Difference]: Finished difference Result 5895 states and 19810 transitions. [2021-05-21 21:35:24,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-21 21:35:24,674 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:24,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:24,683 INFO L225 Difference]: With dead ends: 5895 [2021-05-21 21:35:24,683 INFO L226 Difference]: Without dead ends: 5828 [2021-05-21 21:35:24,684 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 773.2ms TimeCoverageRelationStatistics Valid=296, Invalid=2896, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 21:35:24,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5828 states. [2021-05-21 21:35:24,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5828 to 5475. [2021-05-21 21:35:24,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5475 states, 5474 states have (on average 3.389842893679211) internal successors, (18556), 5474 states have internal predecessors, (18556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:24,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 18556 transitions. [2021-05-21 21:35:24,768 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 18556 transitions. Word has length 39 [2021-05-21 21:35:24,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:24,769 INFO L482 AbstractCegarLoop]: Abstraction has 5475 states and 18556 transitions. [2021-05-21 21:35:24,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:24,769 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 18556 transitions. [2021-05-21 21:35:24,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:24,776 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:24,776 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:24,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable435 [2021-05-21 21:35:24,776 INFO L430 AbstractCegarLoop]: === Iteration 437 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:24,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:24,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1127739162, now seen corresponding path program 437 times [2021-05-21 21:35:24,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:24,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857164702] [2021-05-21 21:35:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:24,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:24,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:24,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857164702] [2021-05-21 21:35:24,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857164702] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:24,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:24,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:24,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999701406] [2021-05-21 21:35:24,939 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:24,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:24,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:24,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:24,940 INFO L87 Difference]: Start difference. First operand 5475 states and 18556 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:25,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:25,960 INFO L93 Difference]: Finished difference Result 5898 states and 19767 transitions. [2021-05-21 21:35:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:35:25,960 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:25,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:25,970 INFO L225 Difference]: With dead ends: 5898 [2021-05-21 21:35:25,970 INFO L226 Difference]: Without dead ends: 5855 [2021-05-21 21:35:25,970 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 671.9ms TimeCoverageRelationStatistics Valid=245, Invalid=2305, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:35:25,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5855 states. [2021-05-21 21:35:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5855 to 5493. [2021-05-21 21:35:26,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5493 states, 5492 states have (on average 3.385833940276766) internal successors, (18595), 5492 states have internal predecessors, (18595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 18595 transitions. [2021-05-21 21:35:26,049 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 18595 transitions. Word has length 39 [2021-05-21 21:35:26,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:26,049 INFO L482 AbstractCegarLoop]: Abstraction has 5493 states and 18595 transitions. [2021-05-21 21:35:26,049 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:26,049 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 18595 transitions. [2021-05-21 21:35:26,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:26,056 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:26,056 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:26,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable436 [2021-05-21 21:35:26,056 INFO L430 AbstractCegarLoop]: === Iteration 438 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:26,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:26,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1957270332, now seen corresponding path program 438 times [2021-05-21 21:35:26,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:26,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112139955] [2021-05-21 21:35:26,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:26,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:26,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112139955] [2021-05-21 21:35:26,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112139955] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:26,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:26,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:26,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245685952] [2021-05-21 21:35:26,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:26,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:26,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:26,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:26,222 INFO L87 Difference]: Start difference. First operand 5493 states and 18595 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:27,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:27,297 INFO L93 Difference]: Finished difference Result 5853 states and 19663 transitions. [2021-05-21 21:35:27,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:35:27,297 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:27,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:27,307 INFO L225 Difference]: With dead ends: 5853 [2021-05-21 21:35:27,308 INFO L226 Difference]: Without dead ends: 5790 [2021-05-21 21:35:27,308 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 707.7ms TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:35:27,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5790 states. [2021-05-21 21:35:27,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5790 to 5475. [2021-05-21 21:35:27,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5475 states, 5474 states have (on average 3.3887468030690537) internal successors, (18550), 5474 states have internal predecessors, (18550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 18550 transitions. [2021-05-21 21:35:27,397 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 18550 transitions. Word has length 39 [2021-05-21 21:35:27,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:27,397 INFO L482 AbstractCegarLoop]: Abstraction has 5475 states and 18550 transitions. [2021-05-21 21:35:27,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:27,397 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 18550 transitions. [2021-05-21 21:35:27,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:27,405 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:27,405 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:27,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable437 [2021-05-21 21:35:27,405 INFO L430 AbstractCegarLoop]: === Iteration 439 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:27,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:27,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1538923080, now seen corresponding path program 439 times [2021-05-21 21:35:27,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:27,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800379729] [2021-05-21 21:35:27,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:27,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:27,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800379729] [2021-05-21 21:35:27,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800379729] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:27,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:27,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:27,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430604156] [2021-05-21 21:35:27,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:27,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:27,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:27,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:27,567 INFO L87 Difference]: Start difference. First operand 5475 states and 18550 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:29,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:29,044 INFO L93 Difference]: Finished difference Result 6043 states and 20131 transitions. [2021-05-21 21:35:29,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-21 21:35:29,045 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:29,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:29,054 INFO L225 Difference]: With dead ends: 6043 [2021-05-21 21:35:29,054 INFO L226 Difference]: Without dead ends: 6000 [2021-05-21 21:35:29,054 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 932.8ms TimeCoverageRelationStatistics Valid=328, Invalid=3454, Unknown=0, NotChecked=0, Total=3782 [2021-05-21 21:35:29,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6000 states. [2021-05-21 21:35:29,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6000 to 5484. [2021-05-21 21:35:29,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5484 states, 5483 states have (on average 3.3875615538938537) internal successors, (18574), 5483 states have internal predecessors, (18574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:29,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5484 states to 5484 states and 18574 transitions. [2021-05-21 21:35:29,134 INFO L78 Accepts]: Start accepts. Automaton has 5484 states and 18574 transitions. Word has length 39 [2021-05-21 21:35:29,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:29,135 INFO L482 AbstractCegarLoop]: Abstraction has 5484 states and 18574 transitions. [2021-05-21 21:35:29,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:29,135 INFO L276 IsEmpty]: Start isEmpty. Operand 5484 states and 18574 transitions. [2021-05-21 21:35:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:29,141 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:29,141 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:29,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable438 [2021-05-21 21:35:29,142 INFO L430 AbstractCegarLoop]: === Iteration 440 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:29,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:29,142 INFO L82 PathProgramCache]: Analyzing trace with hash 975445914, now seen corresponding path program 440 times [2021-05-21 21:35:29,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:29,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939963112] [2021-05-21 21:35:29,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:29,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:29,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:29,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939963112] [2021-05-21 21:35:29,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939963112] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:29,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:29,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:29,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073637276] [2021-05-21 21:35:29,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:29,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:29,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:29,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:29,298 INFO L87 Difference]: Start difference. First operand 5484 states and 18574 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:30,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:30,716 INFO L93 Difference]: Finished difference Result 6046 states and 20132 transitions. [2021-05-21 21:35:30,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-21 21:35:30,716 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:30,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:30,725 INFO L225 Difference]: With dead ends: 6046 [2021-05-21 21:35:30,725 INFO L226 Difference]: Without dead ends: 5994 [2021-05-21 21:35:30,725 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 936.4ms TimeCoverageRelationStatistics Valid=314, Invalid=3346, Unknown=0, NotChecked=0, Total=3660 [2021-05-21 21:35:30,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5994 states. [2021-05-21 21:35:30,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5994 to 5478. [2021-05-21 21:35:30,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5478 states, 5477 states have (on average 3.3883512872010226) internal successors, (18558), 5477 states have internal predecessors, (18558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:30,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 18558 transitions. [2021-05-21 21:35:30,801 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 18558 transitions. Word has length 39 [2021-05-21 21:35:30,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:30,801 INFO L482 AbstractCegarLoop]: Abstraction has 5478 states and 18558 transitions. [2021-05-21 21:35:30,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:30,801 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 18558 transitions. [2021-05-21 21:35:30,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:30,807 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:30,807 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:30,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable439 [2021-05-21 21:35:30,808 INFO L430 AbstractCegarLoop]: === Iteration 441 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:30,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:30,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1218624986, now seen corresponding path program 441 times [2021-05-21 21:35:30,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:30,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47570440] [2021-05-21 21:35:30,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:30,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:30,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:30,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47570440] [2021-05-21 21:35:30,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47570440] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:30,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:30,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:30,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74760940] [2021-05-21 21:35:30,962 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:30,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:30,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:30,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:30,962 INFO L87 Difference]: Start difference. First operand 5478 states and 18558 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:31,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:31,963 INFO L93 Difference]: Finished difference Result 5985 states and 19951 transitions. [2021-05-21 21:35:31,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:35:31,964 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:31,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:31,973 INFO L225 Difference]: With dead ends: 5985 [2021-05-21 21:35:31,973 INFO L226 Difference]: Without dead ends: 5942 [2021-05-21 21:35:31,973 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 659.8ms TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:35:31,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5942 states. [2021-05-21 21:35:32,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5942 to 5487. [2021-05-21 21:35:32,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5487 states, 5486 states have (on average 3.386620488516223) internal successors, (18579), 5486 states have internal predecessors, (18579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:32,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5487 states to 5487 states and 18579 transitions. [2021-05-21 21:35:32,049 INFO L78 Accepts]: Start accepts. Automaton has 5487 states and 18579 transitions. Word has length 39 [2021-05-21 21:35:32,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:32,049 INFO L482 AbstractCegarLoop]: Abstraction has 5487 states and 18579 transitions. [2021-05-21 21:35:32,049 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:32,050 INFO L276 IsEmpty]: Start isEmpty. Operand 5487 states and 18579 transitions. [2021-05-21 21:35:32,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:32,056 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:32,056 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:32,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable440 [2021-05-21 21:35:32,056 INFO L430 AbstractCegarLoop]: === Iteration 442 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:32,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:32,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1326235174, now seen corresponding path program 442 times [2021-05-21 21:35:32,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:32,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490291206] [2021-05-21 21:35:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:32,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:32,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:32,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490291206] [2021-05-21 21:35:32,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490291206] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:32,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:32,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:32,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320114811] [2021-05-21 21:35:32,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:32,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:32,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:32,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:32,218 INFO L87 Difference]: Start difference. First operand 5487 states and 18579 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:33,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:33,316 INFO L93 Difference]: Finished difference Result 5954 states and 19884 transitions. [2021-05-21 21:35:33,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-21 21:35:33,316 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:33,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:33,326 INFO L225 Difference]: With dead ends: 5954 [2021-05-21 21:35:33,326 INFO L226 Difference]: Without dead ends: 5903 [2021-05-21 21:35:33,326 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 696.4ms TimeCoverageRelationStatistics Valid=251, Invalid=2401, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:35:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2021-05-21 21:35:33,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 5481. [2021-05-21 21:35:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5481 states, 5480 states have (on average 3.387408759124088) internal successors, (18563), 5480 states have internal predecessors, (18563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:33,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 18563 transitions. [2021-05-21 21:35:33,414 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 18563 transitions. Word has length 39 [2021-05-21 21:35:33,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:33,414 INFO L482 AbstractCegarLoop]: Abstraction has 5481 states and 18563 transitions. [2021-05-21 21:35:33,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:33,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 18563 transitions. [2021-05-21 21:35:33,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:33,421 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:33,422 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:33,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable441 [2021-05-21 21:35:33,422 INFO L430 AbstractCegarLoop]: === Iteration 443 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:33,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:33,422 INFO L82 PathProgramCache]: Analyzing trace with hash -709016772, now seen corresponding path program 443 times [2021-05-21 21:35:33,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:33,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217842100] [2021-05-21 21:35:33,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:33,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:33,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217842100] [2021-05-21 21:35:33,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217842100] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:33,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:33,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:33,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153964887] [2021-05-21 21:35:33,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:33,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:33,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:33,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:33,585 INFO L87 Difference]: Start difference. First operand 5481 states and 18563 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:34,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:34,556 INFO L93 Difference]: Finished difference Result 5920 states and 19794 transitions. [2021-05-21 21:35:34,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:35:34,556 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:34,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:34,565 INFO L225 Difference]: With dead ends: 5920 [2021-05-21 21:35:34,565 INFO L226 Difference]: Without dead ends: 5874 [2021-05-21 21:35:34,566 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 628.9ms TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 21:35:34,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2021-05-21 21:35:34,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 5488. [2021-05-21 21:35:34,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5488 states, 5487 states have (on average 3.3858210315290687) internal successors, (18578), 5487 states have internal predecessors, (18578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:34,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 18578 transitions. [2021-05-21 21:35:34,644 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 18578 transitions. Word has length 39 [2021-05-21 21:35:34,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:34,644 INFO L482 AbstractCegarLoop]: Abstraction has 5488 states and 18578 transitions. [2021-05-21 21:35:34,644 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:34,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 18578 transitions. [2021-05-21 21:35:34,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:34,651 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:34,651 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:34,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable442 [2021-05-21 21:35:34,651 INFO L430 AbstractCegarLoop]: === Iteration 444 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:34,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:34,651 INFO L82 PathProgramCache]: Analyzing trace with hash -2144084262, now seen corresponding path program 444 times [2021-05-21 21:35:34,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:34,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870218] [2021-05-21 21:35:34,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:34,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:34,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870218] [2021-05-21 21:35:34,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870218] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:34,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:34,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:34,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280981081] [2021-05-21 21:35:34,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:34,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:34,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:34,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:34,813 INFO L87 Difference]: Start difference. First operand 5488 states and 18578 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:35,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:35,855 INFO L93 Difference]: Finished difference Result 5886 states and 19719 transitions. [2021-05-21 21:35:35,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-21 21:35:35,856 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:35,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:35,865 INFO L225 Difference]: With dead ends: 5886 [2021-05-21 21:35:35,865 INFO L226 Difference]: Without dead ends: 5825 [2021-05-21 21:35:35,866 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 671.9ms TimeCoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:35:35,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5825 states. [2021-05-21 21:35:35,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5825 to 5472. [2021-05-21 21:35:35,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5472 states, 5471 states have (on average 3.3898738804606103) internal successors, (18546), 5471 states have internal predecessors, (18546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5472 states to 5472 states and 18546 transitions. [2021-05-21 21:35:35,947 INFO L78 Accepts]: Start accepts. Automaton has 5472 states and 18546 transitions. Word has length 39 [2021-05-21 21:35:35,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:35,947 INFO L482 AbstractCegarLoop]: Abstraction has 5472 states and 18546 transitions. [2021-05-21 21:35:35,947 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:35,947 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states and 18546 transitions. [2021-05-21 21:35:35,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:35,954 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:35,954 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:35,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable443 [2021-05-21 21:35:35,954 INFO L430 AbstractCegarLoop]: === Iteration 445 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:35,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:35,955 INFO L82 PathProgramCache]: Analyzing trace with hash -136287108, now seen corresponding path program 445 times [2021-05-21 21:35:35,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:35,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298429451] [2021-05-21 21:35:35,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:36,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:36,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298429451] [2021-05-21 21:35:36,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298429451] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:36,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:36,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:36,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081791964] [2021-05-21 21:35:36,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:36,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:36,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:36,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:36,113 INFO L87 Difference]: Start difference. First operand 5472 states and 18546 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:37,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:37,216 INFO L93 Difference]: Finished difference Result 5863 states and 19686 transitions. [2021-05-21 21:35:37,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:35:37,216 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:37,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:37,225 INFO L225 Difference]: With dead ends: 5863 [2021-05-21 21:35:37,225 INFO L226 Difference]: Without dead ends: 5800 [2021-05-21 21:35:37,225 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 752.9ms TimeCoverageRelationStatistics Valid=283, Invalid=2579, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 21:35:37,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5800 states. [2021-05-21 21:35:37,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5800 to 5476. [2021-05-21 21:35:37,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5476 states, 5475 states have (on average 3.3892237442922375) internal successors, (18556), 5475 states have internal predecessors, (18556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:37,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5476 states to 5476 states and 18556 transitions. [2021-05-21 21:35:37,302 INFO L78 Accepts]: Start accepts. Automaton has 5476 states and 18556 transitions. Word has length 39 [2021-05-21 21:35:37,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:37,302 INFO L482 AbstractCegarLoop]: Abstraction has 5476 states and 18556 transitions. [2021-05-21 21:35:37,302 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:37,302 INFO L276 IsEmpty]: Start isEmpty. Operand 5476 states and 18556 transitions. [2021-05-21 21:35:37,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:37,308 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:37,308 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:37,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable444 [2021-05-21 21:35:37,309 INFO L430 AbstractCegarLoop]: === Iteration 446 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:37,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:37,309 INFO L82 PathProgramCache]: Analyzing trace with hash -381779206, now seen corresponding path program 446 times [2021-05-21 21:35:37,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:37,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807770101] [2021-05-21 21:35:37,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:37,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:37,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807770101] [2021-05-21 21:35:37,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807770101] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:37,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:37,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:37,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531642648] [2021-05-21 21:35:37,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:37,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:37,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:37,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:37,494 INFO L87 Difference]: Start difference. First operand 5476 states and 18556 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:38,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:38,542 INFO L93 Difference]: Finished difference Result 5914 states and 19807 transitions. [2021-05-21 21:35:38,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:35:38,542 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:38,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:38,552 INFO L225 Difference]: With dead ends: 5914 [2021-05-21 21:35:38,552 INFO L226 Difference]: Without dead ends: 5871 [2021-05-21 21:35:38,552 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 728.7ms TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:35:38,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5871 states. [2021-05-21 21:35:38,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5871 to 5494. [2021-05-21 21:35:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5494 states, 5493 states have (on average 3.385217549608593) internal successors, (18595), 5493 states have internal predecessors, (18595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5494 states to 5494 states and 18595 transitions. [2021-05-21 21:35:38,636 INFO L78 Accepts]: Start accepts. Automaton has 5494 states and 18595 transitions. Word has length 39 [2021-05-21 21:35:38,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:38,636 INFO L482 AbstractCegarLoop]: Abstraction has 5494 states and 18595 transitions. [2021-05-21 21:35:38,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:38,636 INFO L276 IsEmpty]: Start isEmpty. Operand 5494 states and 18595 transitions. [2021-05-21 21:35:38,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:38,644 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:38,644 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:38,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable445 [2021-05-21 21:35:38,644 INFO L430 AbstractCegarLoop]: === Iteration 447 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:38,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:38,644 INFO L82 PathProgramCache]: Analyzing trace with hash 447751964, now seen corresponding path program 447 times [2021-05-21 21:35:38,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:38,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877478343] [2021-05-21 21:35:38,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:38,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:38,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:38,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877478343] [2021-05-21 21:35:38,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877478343] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:38,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:38,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:38,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776805603] [2021-05-21 21:35:38,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:38,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:38,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:38,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:38,806 INFO L87 Difference]: Start difference. First operand 5494 states and 18595 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:39,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:39,849 INFO L93 Difference]: Finished difference Result 5851 states and 19652 transitions. [2021-05-21 21:35:39,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:35:39,849 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:39,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:39,859 INFO L225 Difference]: With dead ends: 5851 [2021-05-21 21:35:39,859 INFO L226 Difference]: Without dead ends: 5788 [2021-05-21 21:35:39,859 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 675.6ms TimeCoverageRelationStatistics Valid=240, Invalid=2310, Unknown=0, NotChecked=0, Total=2550 [2021-05-21 21:35:39,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2021-05-21 21:35:39,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 5476. [2021-05-21 21:35:39,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5476 states, 5475 states have (on average 3.3884931506849316) internal successors, (18552), 5475 states have internal predecessors, (18552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:39,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5476 states to 5476 states and 18552 transitions. [2021-05-21 21:35:39,957 INFO L78 Accepts]: Start accepts. Automaton has 5476 states and 18552 transitions. Word has length 39 [2021-05-21 21:35:39,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:39,957 INFO L482 AbstractCegarLoop]: Abstraction has 5476 states and 18552 transitions. [2021-05-21 21:35:39,957 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:39,957 INFO L276 IsEmpty]: Start isEmpty. Operand 5476 states and 18552 transitions. [2021-05-21 21:35:39,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:39,964 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:39,964 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:39,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable446 [2021-05-21 21:35:39,965 INFO L430 AbstractCegarLoop]: === Iteration 448 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:39,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:39,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1565483844, now seen corresponding path program 448 times [2021-05-21 21:35:39,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:39,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548786869] [2021-05-21 21:35:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:40,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:40,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548786869] [2021-05-21 21:35:40,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548786869] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:40,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:40,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:40,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798781620] [2021-05-21 21:35:40,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:40,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:40,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:40,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:40,123 INFO L87 Difference]: Start difference. First operand 5476 states and 18552 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:41,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:41,201 INFO L93 Difference]: Finished difference Result 5955 states and 19895 transitions. [2021-05-21 21:35:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-21 21:35:41,202 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:41,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:41,211 INFO L225 Difference]: With dead ends: 5955 [2021-05-21 21:35:41,211 INFO L226 Difference]: Without dead ends: 5900 [2021-05-21 21:35:41,211 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 726.4ms TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:35:41,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5900 states. [2021-05-21 21:35:41,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5900 to 5478. [2021-05-21 21:35:41,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5478 states, 5477 states have (on average 3.3881687054957093) internal successors, (18557), 5477 states have internal predecessors, (18557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:41,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 18557 transitions. [2021-05-21 21:35:41,289 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 18557 transitions. Word has length 39 [2021-05-21 21:35:41,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:41,289 INFO L482 AbstractCegarLoop]: Abstraction has 5478 states and 18557 transitions. [2021-05-21 21:35:41,289 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 18557 transitions. [2021-05-21 21:35:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:41,296 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:41,296 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:41,296 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable447 [2021-05-21 21:35:41,296 INFO L430 AbstractCegarLoop]: === Iteration 449 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:41,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:41,296 INFO L82 PathProgramCache]: Analyzing trace with hash -228425830, now seen corresponding path program 449 times [2021-05-21 21:35:41,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:41,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393786899] [2021-05-21 21:35:41,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:41,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:41,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393786899] [2021-05-21 21:35:41,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393786899] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:41,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:41,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:41,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301659534] [2021-05-21 21:35:41,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:41,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:41,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:41,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:41,453 INFO L87 Difference]: Start difference. First operand 5478 states and 18557 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:42,508 INFO L93 Difference]: Finished difference Result 5931 states and 19829 transitions. [2021-05-21 21:35:42,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:35:42,509 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:42,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:42,517 INFO L225 Difference]: With dead ends: 5931 [2021-05-21 21:35:42,518 INFO L226 Difference]: Without dead ends: 5888 [2021-05-21 21:35:42,518 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 677.7ms TimeCoverageRelationStatistics Valid=258, Invalid=2394, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:35:42,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5888 states. [2021-05-21 21:35:42,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5888 to 5484. [2021-05-21 21:35:42,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5484 states, 5483 states have (on average 3.3868320262629945) internal successors, (18570), 5483 states have internal predecessors, (18570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:42,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5484 states to 5484 states and 18570 transitions. [2021-05-21 21:35:42,601 INFO L78 Accepts]: Start accepts. Automaton has 5484 states and 18570 transitions. Word has length 39 [2021-05-21 21:35:42,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:42,601 INFO L482 AbstractCegarLoop]: Abstraction has 5484 states and 18570 transitions. [2021-05-21 21:35:42,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:42,601 INFO L276 IsEmpty]: Start isEmpty. Operand 5484 states and 18570 transitions. [2021-05-21 21:35:42,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:42,608 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:42,608 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:42,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable448 [2021-05-21 21:35:42,608 INFO L430 AbstractCegarLoop]: === Iteration 450 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:42,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:42,608 INFO L82 PathProgramCache]: Analyzing trace with hash -499845380, now seen corresponding path program 450 times [2021-05-21 21:35:42,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:42,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163859230] [2021-05-21 21:35:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:42,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:42,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:42,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163859230] [2021-05-21 21:35:42,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163859230] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:42,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:42,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:42,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641046060] [2021-05-21 21:35:42,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:42,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:42,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:42,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:42,770 INFO L87 Difference]: Start difference. First operand 5484 states and 18570 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:43,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:43,831 INFO L93 Difference]: Finished difference Result 5900 states and 19762 transitions. [2021-05-21 21:35:43,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:35:43,831 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:43,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:43,841 INFO L225 Difference]: With dead ends: 5900 [2021-05-21 21:35:43,841 INFO L226 Difference]: Without dead ends: 5849 [2021-05-21 21:35:43,842 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 702.9ms TimeCoverageRelationStatistics Valid=251, Invalid=2401, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:35:43,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5849 states. [2021-05-21 21:35:43,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5849 to 5478. [2021-05-21 21:35:43,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5478 states, 5477 states have (on average 3.387803542085083) internal successors, (18555), 5477 states have internal predecessors, (18555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 18555 transitions. [2021-05-21 21:35:43,925 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 18555 transitions. Word has length 39 [2021-05-21 21:35:43,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:43,926 INFO L482 AbstractCegarLoop]: Abstraction has 5478 states and 18555 transitions. [2021-05-21 21:35:43,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 18555 transitions. [2021-05-21 21:35:43,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:43,933 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:43,933 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:43,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable449 [2021-05-21 21:35:43,933 INFO L430 AbstractCegarLoop]: === Iteration 451 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:43,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:43,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1563157032, now seen corresponding path program 451 times [2021-05-21 21:35:43,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:43,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629481384] [2021-05-21 21:35:43,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:44,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:44,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629481384] [2021-05-21 21:35:44,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629481384] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:44,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:44,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:44,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928181568] [2021-05-21 21:35:44,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:44,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:44,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:44,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:44,092 INFO L87 Difference]: Start difference. First operand 5478 states and 18555 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:45,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:45,991 INFO L93 Difference]: Finished difference Result 7629 states and 25607 transitions. [2021-05-21 21:35:45,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-21 21:35:45,991 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:46,003 INFO L225 Difference]: With dead ends: 7629 [2021-05-21 21:35:46,003 INFO L226 Difference]: Without dead ends: 7590 [2021-05-21 21:35:46,004 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1475 ImplicationChecksByTransitivity, 1127.9ms TimeCoverageRelationStatistics Valid=466, Invalid=4790, Unknown=0, NotChecked=0, Total=5256 [2021-05-21 21:35:46,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7590 states. [2021-05-21 21:35:46,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7590 to 5496. [2021-05-21 21:35:46,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5496 states, 5495 states have (on average 3.388898999090082) internal successors, (18622), 5495 states have internal predecessors, (18622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:46,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5496 states to 5496 states and 18622 transitions. [2021-05-21 21:35:46,097 INFO L78 Accepts]: Start accepts. Automaton has 5496 states and 18622 transitions. Word has length 39 [2021-05-21 21:35:46,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:46,097 INFO L482 AbstractCegarLoop]: Abstraction has 5496 states and 18622 transitions. [2021-05-21 21:35:46,097 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:46,097 INFO L276 IsEmpty]: Start isEmpty. Operand 5496 states and 18622 transitions. [2021-05-21 21:35:46,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:46,104 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:46,104 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:46,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable450 [2021-05-21 21:35:46,104 INFO L430 AbstractCegarLoop]: === Iteration 452 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:46,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:46,104 INFO L82 PathProgramCache]: Analyzing trace with hash -194827382, now seen corresponding path program 452 times [2021-05-21 21:35:46,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:46,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463596508] [2021-05-21 21:35:46,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:46,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:46,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463596508] [2021-05-21 21:35:46,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463596508] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:46,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:46,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:46,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978142128] [2021-05-21 21:35:46,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:46,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:46,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:46,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:46,261 INFO L87 Difference]: Start difference. First operand 5496 states and 18622 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:48,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:48,138 INFO L93 Difference]: Finished difference Result 7617 states and 25563 transitions. [2021-05-21 21:35:48,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-21 21:35:48,138 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:48,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:48,150 INFO L225 Difference]: With dead ends: 7617 [2021-05-21 21:35:48,150 INFO L226 Difference]: Without dead ends: 7562 [2021-05-21 21:35:48,151 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 1113.7ms TimeCoverageRelationStatistics Valid=447, Invalid=4665, Unknown=0, NotChecked=0, Total=5112 [2021-05-21 21:35:48,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7562 states. [2021-05-21 21:35:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7562 to 5488. [2021-05-21 21:35:48,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5488 states, 5487 states have (on average 3.3905595042828502) internal successors, (18604), 5487 states have internal predecessors, (18604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:48,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 18604 transitions. [2021-05-21 21:35:48,242 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 18604 transitions. Word has length 39 [2021-05-21 21:35:48,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:48,242 INFO L482 AbstractCegarLoop]: Abstraction has 5488 states and 18604 transitions. [2021-05-21 21:35:48,242 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:48,242 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 18604 transitions. [2021-05-21 21:35:48,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:48,249 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:48,249 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:48,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable451 [2021-05-21 21:35:48,249 INFO L430 AbstractCegarLoop]: === Iteration 453 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:48,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:48,249 INFO L82 PathProgramCache]: Analyzing trace with hash -598000594, now seen corresponding path program 453 times [2021-05-21 21:35:48,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:48,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353183632] [2021-05-21 21:35:48,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:48,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:48,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353183632] [2021-05-21 21:35:48,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353183632] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:48,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:48,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:48,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383054882] [2021-05-21 21:35:48,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:48,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:48,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:48,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:48,405 INFO L87 Difference]: Start difference. First operand 5488 states and 18604 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:49,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:49,657 INFO L93 Difference]: Finished difference Result 6089 states and 20233 transitions. [2021-05-21 21:35:49,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-21 21:35:49,657 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:49,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:49,667 INFO L225 Difference]: With dead ends: 6089 [2021-05-21 21:35:49,667 INFO L226 Difference]: Without dead ends: 6034 [2021-05-21 21:35:49,667 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 863.1ms TimeCoverageRelationStatistics Valid=334, Invalid=3206, Unknown=0, NotChecked=0, Total=3540 [2021-05-21 21:35:49,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6034 states. [2021-05-21 21:35:49,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6034 to 5493. [2021-05-21 21:35:49,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5493 states, 5492 states have (on average 3.3896576839038604) internal successors, (18616), 5492 states have internal predecessors, (18616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:49,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 18616 transitions. [2021-05-21 21:35:49,744 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 18616 transitions. Word has length 39 [2021-05-21 21:35:49,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:49,744 INFO L482 AbstractCegarLoop]: Abstraction has 5493 states and 18616 transitions. [2021-05-21 21:35:49,744 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:49,744 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 18616 transitions. [2021-05-21 21:35:49,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:49,751 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:49,751 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:49,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable452 [2021-05-21 21:35:49,751 INFO L430 AbstractCegarLoop]: === Iteration 454 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:49,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:49,751 INFO L82 PathProgramCache]: Analyzing trace with hash 574651628, now seen corresponding path program 454 times [2021-05-21 21:35:49,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:49,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670819448] [2021-05-21 21:35:49,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:49,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:49,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670819448] [2021-05-21 21:35:49,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670819448] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:49,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:49,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:49,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439083318] [2021-05-21 21:35:49,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:49,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:49,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:49,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:49,905 INFO L87 Difference]: Start difference. First operand 5493 states and 18616 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:51,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:51,006 INFO L93 Difference]: Finished difference Result 6076 states and 20192 transitions. [2021-05-21 21:35:51,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-21 21:35:51,006 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:51,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:51,015 INFO L225 Difference]: With dead ends: 6076 [2021-05-21 21:35:51,015 INFO L226 Difference]: Without dead ends: 6030 [2021-05-21 21:35:51,016 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 749.3ms TimeCoverageRelationStatistics Valid=283, Invalid=2687, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:35:51,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6030 states. [2021-05-21 21:35:51,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6030 to 5499. [2021-05-21 21:35:51,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5499 states, 5498 states have (on average 3.3886867951982538) internal successors, (18631), 5498 states have internal predecessors, (18631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:51,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5499 states to 5499 states and 18631 transitions. [2021-05-21 21:35:51,096 INFO L78 Accepts]: Start accepts. Automaton has 5499 states and 18631 transitions. Word has length 39 [2021-05-21 21:35:51,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:51,096 INFO L482 AbstractCegarLoop]: Abstraction has 5499 states and 18631 transitions. [2021-05-21 21:35:51,096 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:51,096 INFO L276 IsEmpty]: Start isEmpty. Operand 5499 states and 18631 transitions. [2021-05-21 21:35:51,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:51,103 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:51,103 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:51,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable453 [2021-05-21 21:35:51,103 INFO L430 AbstractCegarLoop]: === Iteration 455 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:51,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:51,103 INFO L82 PathProgramCache]: Analyzing trace with hash 327185466, now seen corresponding path program 455 times [2021-05-21 21:35:51,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:51,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251685249] [2021-05-21 21:35:51,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:51,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:51,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251685249] [2021-05-21 21:35:51,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251685249] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:51,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:51,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:51,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390951114] [2021-05-21 21:35:51,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:51,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:51,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:51,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:51,258 INFO L87 Difference]: Start difference. First operand 5499 states and 18631 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:52,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:52,339 INFO L93 Difference]: Finished difference Result 6036 states and 20099 transitions. [2021-05-21 21:35:52,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-21 21:35:52,339 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:52,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:52,348 INFO L225 Difference]: With dead ends: 6036 [2021-05-21 21:35:52,348 INFO L226 Difference]: Without dead ends: 5991 [2021-05-21 21:35:52,349 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 726.2ms TimeCoverageRelationStatistics Valid=278, Invalid=2584, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 21:35:52,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5991 states. [2021-05-21 21:35:52,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5991 to 5497. [2021-05-21 21:35:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5497 states, 5496 states have (on average 3.3891921397379914) internal successors, (18627), 5496 states have internal predecessors, (18627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:52,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5497 states to 5497 states and 18627 transitions. [2021-05-21 21:35:52,428 INFO L78 Accepts]: Start accepts. Automaton has 5497 states and 18627 transitions. Word has length 39 [2021-05-21 21:35:52,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:52,428 INFO L482 AbstractCegarLoop]: Abstraction has 5497 states and 18627 transitions. [2021-05-21 21:35:52,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:52,428 INFO L276 IsEmpty]: Start isEmpty. Operand 5497 states and 18627 transitions. [2021-05-21 21:35:52,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:52,435 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:52,435 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:52,435 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable454 [2021-05-21 21:35:52,435 INFO L430 AbstractCegarLoop]: === Iteration 456 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:52,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:52,435 INFO L82 PathProgramCache]: Analyzing trace with hash 506906748, now seen corresponding path program 456 times [2021-05-21 21:35:52,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:52,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237854829] [2021-05-21 21:35:52,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:52,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:52,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237854829] [2021-05-21 21:35:52,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237854829] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:52,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:52,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:52,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059059728] [2021-05-21 21:35:52,590 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:52,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:52,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:52,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:52,590 INFO L87 Difference]: Start difference. First operand 5497 states and 18627 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:53,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:53,740 INFO L93 Difference]: Finished difference Result 6095 states and 20249 transitions. [2021-05-21 21:35:53,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-21 21:35:53,740 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:53,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:53,750 INFO L225 Difference]: With dead ends: 6095 [2021-05-21 21:35:53,751 INFO L226 Difference]: Without dead ends: 6052 [2021-05-21 21:35:53,751 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 766.3ms TimeCoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2021-05-21 21:35:53,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6052 states. [2021-05-21 21:35:53,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6052 to 5506. [2021-05-21 21:35:53,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5506 states, 5505 states have (on average 3.3874659400544957) internal successors, (18648), 5505 states have internal predecessors, (18648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5506 states to 5506 states and 18648 transitions. [2021-05-21 21:35:53,841 INFO L78 Accepts]: Start accepts. Automaton has 5506 states and 18648 transitions. Word has length 39 [2021-05-21 21:35:53,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:53,841 INFO L482 AbstractCegarLoop]: Abstraction has 5506 states and 18648 transitions. [2021-05-21 21:35:53,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:53,841 INFO L276 IsEmpty]: Start isEmpty. Operand 5506 states and 18648 transitions. [2021-05-21 21:35:53,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:53,848 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:53,848 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:53,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable455 [2021-05-21 21:35:53,848 INFO L430 AbstractCegarLoop]: === Iteration 457 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:53,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:53,849 INFO L82 PathProgramCache]: Analyzing trace with hash -2037953412, now seen corresponding path program 457 times [2021-05-21 21:35:53,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:53,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507248105] [2021-05-21 21:35:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:54,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:54,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507248105] [2021-05-21 21:35:54,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507248105] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:54,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:54,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:54,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088132616] [2021-05-21 21:35:54,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:54,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:54,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:54,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:54,009 INFO L87 Difference]: Start difference. First operand 5506 states and 18648 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:55,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:55,131 INFO L93 Difference]: Finished difference Result 6062 states and 20171 transitions. [2021-05-21 21:35:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-21 21:35:55,131 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:55,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:55,140 INFO L225 Difference]: With dead ends: 6062 [2021-05-21 21:35:55,141 INFO L226 Difference]: Without dead ends: 6011 [2021-05-21 21:35:55,141 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 726.0ms TimeCoverageRelationStatistics Valid=274, Invalid=2696, Unknown=0, NotChecked=0, Total=2970 [2021-05-21 21:35:55,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2021-05-21 21:35:55,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 5506. [2021-05-21 21:35:55,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5506 states, 5505 states have (on average 3.3869209809264307) internal successors, (18645), 5505 states have internal predecessors, (18645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:55,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5506 states to 5506 states and 18645 transitions. [2021-05-21 21:35:55,220 INFO L78 Accepts]: Start accepts. Automaton has 5506 states and 18645 transitions. Word has length 39 [2021-05-21 21:35:55,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:55,220 INFO L482 AbstractCegarLoop]: Abstraction has 5506 states and 18645 transitions. [2021-05-21 21:35:55,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:55,220 INFO L276 IsEmpty]: Start isEmpty. Operand 5506 states and 18645 transitions. [2021-05-21 21:35:55,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:55,226 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:55,226 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:55,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable456 [2021-05-21 21:35:55,227 INFO L430 AbstractCegarLoop]: === Iteration 458 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:55,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:55,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1420735010, now seen corresponding path program 458 times [2021-05-21 21:35:55,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:55,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133702156] [2021-05-21 21:35:55,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:55,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:55,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133702156] [2021-05-21 21:35:55,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133702156] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:55,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:55,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:55,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976433017] [2021-05-21 21:35:55,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:55,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:55,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:55,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:55,382 INFO L87 Difference]: Start difference. First operand 5506 states and 18645 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:56,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:56,467 INFO L93 Difference]: Finished difference Result 6079 states and 20196 transitions. [2021-05-21 21:35:56,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-21 21:35:56,467 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:56,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:56,477 INFO L225 Difference]: With dead ends: 6079 [2021-05-21 21:35:56,477 INFO L226 Difference]: Without dead ends: 6033 [2021-05-21 21:35:56,478 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 712.9ms TimeCoverageRelationStatistics Valid=257, Invalid=2499, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 21:35:56,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6033 states. [2021-05-21 21:35:56,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6033 to 5513. [2021-05-21 21:35:56,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5513 states, 5512 states have (on average 3.385341074020319) internal successors, (18660), 5512 states have internal predecessors, (18660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:56,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5513 states to 5513 states and 18660 transitions. [2021-05-21 21:35:56,561 INFO L78 Accepts]: Start accepts. Automaton has 5513 states and 18660 transitions. Word has length 39 [2021-05-21 21:35:56,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:56,561 INFO L482 AbstractCegarLoop]: Abstraction has 5513 states and 18660 transitions. [2021-05-21 21:35:56,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:56,561 INFO L276 IsEmpty]: Start isEmpty. Operand 5513 states and 18660 transitions. [2021-05-21 21:35:56,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:56,568 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:56,568 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:56,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable457 [2021-05-21 21:35:56,569 INFO L430 AbstractCegarLoop]: === Iteration 459 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:56,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:56,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1439164796, now seen corresponding path program 459 times [2021-05-21 21:35:56,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:56,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532425634] [2021-05-21 21:35:56,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:56,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:56,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532425634] [2021-05-21 21:35:56,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532425634] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:56,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:56,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:56,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535105501] [2021-05-21 21:35:56,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:56,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:56,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:56,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:56,770 INFO L87 Difference]: Start difference. First operand 5513 states and 18660 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:57,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:57,829 INFO L93 Difference]: Finished difference Result 6048 states and 20124 transitions. [2021-05-21 21:35:57,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-21 21:35:57,829 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:57,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:57,839 INFO L225 Difference]: With dead ends: 6048 [2021-05-21 21:35:57,839 INFO L226 Difference]: Without dead ends: 5993 [2021-05-21 21:35:57,839 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 743.2ms TimeCoverageRelationStatistics Valid=264, Invalid=2598, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 21:35:57,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5993 states. [2021-05-21 21:35:57,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5993 to 5510. [2021-05-21 21:35:57,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5510 states, 5509 states have (on average 3.3860954801234344) internal successors, (18654), 5509 states have internal predecessors, (18654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:57,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5510 states to 5510 states and 18654 transitions. [2021-05-21 21:35:57,921 INFO L78 Accepts]: Start accepts. Automaton has 5510 states and 18654 transitions. Word has length 39 [2021-05-21 21:35:57,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:57,921 INFO L482 AbstractCegarLoop]: Abstraction has 5510 states and 18654 transitions. [2021-05-21 21:35:57,921 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:57,921 INFO L276 IsEmpty]: Start isEmpty. Operand 5510 states and 18654 transitions. [2021-05-21 21:35:57,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:57,928 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:57,928 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:57,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable458 [2021-05-21 21:35:57,928 INFO L430 AbstractCegarLoop]: === Iteration 460 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:57,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:57,928 INFO L82 PathProgramCache]: Analyzing trace with hash 156461678, now seen corresponding path program 460 times [2021-05-21 21:35:57,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:57,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820967713] [2021-05-21 21:35:57,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:58,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:58,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820967713] [2021-05-21 21:35:58,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820967713] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:58,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:58,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:58,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158818175] [2021-05-21 21:35:58,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:58,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:58,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:58,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:58,087 INFO L87 Difference]: Start difference. First operand 5510 states and 18654 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:59,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:35:59,199 INFO L93 Difference]: Finished difference Result 6032 states and 20084 transitions. [2021-05-21 21:35:59,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-21 21:35:59,200 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:35:59,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:35:59,208 INFO L225 Difference]: With dead ends: 6032 [2021-05-21 21:35:59,209 INFO L226 Difference]: Without dead ends: 5981 [2021-05-21 21:35:59,209 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 707.1ms TimeCoverageRelationStatistics Valid=266, Invalid=2596, Unknown=0, NotChecked=0, Total=2862 [2021-05-21 21:35:59,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5981 states. [2021-05-21 21:35:59,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5981 to 5504. [2021-05-21 21:35:59,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5504 states, 5503 states have (on average 3.3870616027621296) internal successors, (18639), 5503 states have internal predecessors, (18639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:59,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5504 states to 5504 states and 18639 transitions. [2021-05-21 21:35:59,283 INFO L78 Accepts]: Start accepts. Automaton has 5504 states and 18639 transitions. Word has length 39 [2021-05-21 21:35:59,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:35:59,283 INFO L482 AbstractCegarLoop]: Abstraction has 5504 states and 18639 transitions. [2021-05-21 21:35:59,283 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:35:59,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5504 states and 18639 transitions. [2021-05-21 21:35:59,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:35:59,290 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:35:59,291 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:35:59,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable459 [2021-05-21 21:35:59,291 INFO L430 AbstractCegarLoop]: === Iteration 461 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:35:59,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:35:59,291 INFO L82 PathProgramCache]: Analyzing trace with hash 530794186, now seen corresponding path program 461 times [2021-05-21 21:35:59,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:35:59,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068539931] [2021-05-21 21:35:59,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:35:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:35:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:35:59,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:35:59,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068539931] [2021-05-21 21:35:59,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068539931] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:35:59,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:35:59,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:35:59,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650885386] [2021-05-21 21:35:59,449 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:35:59,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:35:59,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:35:59,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:35:59,449 INFO L87 Difference]: Start difference. First operand 5504 states and 18639 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:02,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:02,058 INFO L93 Difference]: Finished difference Result 9334 states and 31252 transitions. [2021-05-21 21:36:02,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-21 21:36:02,058 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:02,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:02,072 INFO L225 Difference]: With dead ends: 9334 [2021-05-21 21:36:02,072 INFO L226 Difference]: Without dead ends: 9295 [2021-05-21 21:36:02,073 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2864 ImplicationChecksByTransitivity, 1612.0ms TimeCoverageRelationStatistics Valid=728, Invalid=8202, Unknown=0, NotChecked=0, Total=8930 [2021-05-21 21:36:02,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9295 states. [2021-05-21 21:36:02,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9295 to 5527. [2021-05-21 21:36:02,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5527 states, 5526 states have (on average 3.388888888888889) internal successors, (18727), 5526 states have internal predecessors, (18727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:02,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5527 states to 5527 states and 18727 transitions. [2021-05-21 21:36:02,171 INFO L78 Accepts]: Start accepts. Automaton has 5527 states and 18727 transitions. Word has length 39 [2021-05-21 21:36:02,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:02,171 INFO L482 AbstractCegarLoop]: Abstraction has 5527 states and 18727 transitions. [2021-05-21 21:36:02,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:02,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5527 states and 18727 transitions. [2021-05-21 21:36:02,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:02,178 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:02,178 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:02,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable460 [2021-05-21 21:36:02,178 INFO L430 AbstractCegarLoop]: === Iteration 462 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:02,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:02,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1227190228, now seen corresponding path program 462 times [2021-05-21 21:36:02,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:02,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257163550] [2021-05-21 21:36:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:02,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:02,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:02,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257163550] [2021-05-21 21:36:02,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257163550] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:02,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:02,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:02,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484922226] [2021-05-21 21:36:02,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:02,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:02,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:02,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:02,333 INFO L87 Difference]: Start difference. First operand 5527 states and 18727 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:04,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:04,985 INFO L93 Difference]: Finished difference Result 9304 states and 31151 transitions. [2021-05-21 21:36:04,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-21 21:36:04,985 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:04,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:05,000 INFO L225 Difference]: With dead ends: 9304 [2021-05-21 21:36:05,000 INFO L226 Difference]: Without dead ends: 9253 [2021-05-21 21:36:05,001 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 1618.9ms TimeCoverageRelationStatistics Valid=706, Invalid=8036, Unknown=0, NotChecked=0, Total=8742 [2021-05-21 21:36:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9253 states. [2021-05-21 21:36:05,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9253 to 5523. [2021-05-21 21:36:05,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5523 states, 5522 states have (on average 3.3893516841724014) internal successors, (18716), 5522 states have internal predecessors, (18716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:05,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5523 states to 5523 states and 18716 transitions. [2021-05-21 21:36:05,100 INFO L78 Accepts]: Start accepts. Automaton has 5523 states and 18716 transitions. Word has length 39 [2021-05-21 21:36:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:05,100 INFO L482 AbstractCegarLoop]: Abstraction has 5523 states and 18716 transitions. [2021-05-21 21:36:05,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:05,100 INFO L276 IsEmpty]: Start isEmpty. Operand 5523 states and 18716 transitions. [2021-05-21 21:36:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:05,107 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:05,107 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:05,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable461 [2021-05-21 21:36:05,107 INFO L430 AbstractCegarLoop]: === Iteration 463 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:05,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:05,107 INFO L82 PathProgramCache]: Analyzing trace with hash 897193304, now seen corresponding path program 463 times [2021-05-21 21:36:05,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:05,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768702828] [2021-05-21 21:36:05,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:05,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:05,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768702828] [2021-05-21 21:36:05,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768702828] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:05,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:05,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:05,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28813766] [2021-05-21 21:36:05,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:05,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:05,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:05,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:05,263 INFO L87 Difference]: Start difference. First operand 5523 states and 18716 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:06,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:06,322 INFO L93 Difference]: Finished difference Result 5978 states and 19989 transitions. [2021-05-21 21:36:06,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-21 21:36:06,322 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:06,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:06,331 INFO L225 Difference]: With dead ends: 5978 [2021-05-21 21:36:06,332 INFO L226 Difference]: Without dead ends: 5935 [2021-05-21 21:36:06,332 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 685.0ms TimeCoverageRelationStatistics Valid=253, Invalid=2399, Unknown=0, NotChecked=0, Total=2652 [2021-05-21 21:36:06,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5935 states. [2021-05-21 21:36:06,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5935 to 5519. [2021-05-21 21:36:06,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5519 states, 5518 states have (on average 3.389996375498369) internal successors, (18706), 5518 states have internal predecessors, (18706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:06,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5519 states to 5519 states and 18706 transitions. [2021-05-21 21:36:06,448 INFO L78 Accepts]: Start accepts. Automaton has 5519 states and 18706 transitions. Word has length 39 [2021-05-21 21:36:06,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:06,448 INFO L482 AbstractCegarLoop]: Abstraction has 5519 states and 18706 transitions. [2021-05-21 21:36:06,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:06,449 INFO L276 IsEmpty]: Start isEmpty. Operand 5519 states and 18706 transitions. [2021-05-21 21:36:06,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:06,455 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:06,455 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:06,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable462 [2021-05-21 21:36:06,456 INFO L430 AbstractCegarLoop]: === Iteration 464 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:06,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:06,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1561016502, now seen corresponding path program 464 times [2021-05-21 21:36:06,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:06,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557922240] [2021-05-21 21:36:06,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:06,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:06,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:06,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557922240] [2021-05-21 21:36:06,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557922240] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:06,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:06,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:06,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947956358] [2021-05-21 21:36:06,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:06,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:06,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:06,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:06,614 INFO L87 Difference]: Start difference. First operand 5519 states and 18706 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:07,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:07,718 INFO L93 Difference]: Finished difference Result 5986 states and 20009 transitions. [2021-05-21 21:36:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-21 21:36:07,719 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:07,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:07,728 INFO L225 Difference]: With dead ends: 5986 [2021-05-21 21:36:07,728 INFO L226 Difference]: Without dead ends: 5925 [2021-05-21 21:36:07,729 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 737.2ms TimeCoverageRelationStatistics Valid=256, Invalid=2500, Unknown=0, NotChecked=0, Total=2756 [2021-05-21 21:36:07,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5925 states. [2021-05-21 21:36:07,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5925 to 5507. [2021-05-21 21:36:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5507 states, 5506 states have (on average 3.3928441699963674) internal successors, (18681), 5506 states have internal predecessors, (18681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:07,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5507 states to 5507 states and 18681 transitions. [2021-05-21 21:36:07,812 INFO L78 Accepts]: Start accepts. Automaton has 5507 states and 18681 transitions. Word has length 39 [2021-05-21 21:36:07,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:07,812 INFO L482 AbstractCegarLoop]: Abstraction has 5507 states and 18681 transitions. [2021-05-21 21:36:07,812 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:07,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5507 states and 18681 transitions. [2021-05-21 21:36:07,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:07,819 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:07,819 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:07,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable463 [2021-05-21 21:36:07,820 INFO L430 AbstractCegarLoop]: === Iteration 465 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:07,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:07,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1140508250, now seen corresponding path program 465 times [2021-05-21 21:36:07,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:07,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125106092] [2021-05-21 21:36:07,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:07,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:07,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125106092] [2021-05-21 21:36:07,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125106092] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:07,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:07,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:07,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789629992] [2021-05-21 21:36:07,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:07,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:07,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:07,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:07,982 INFO L87 Difference]: Start difference. First operand 5507 states and 18681 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:08,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:08,968 INFO L93 Difference]: Finished difference Result 5933 states and 19890 transitions. [2021-05-21 21:36:08,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-21 21:36:08,968 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:08,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:08,978 INFO L225 Difference]: With dead ends: 5933 [2021-05-21 21:36:08,978 INFO L226 Difference]: Without dead ends: 5870 [2021-05-21 21:36:08,978 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 645.9ms TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 21:36:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5870 states. [2021-05-21 21:36:09,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5870 to 5595. [2021-05-21 21:36:09,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5595 states, 5594 states have (on average 3.3841616017161242) internal successors, (18931), 5594 states have internal predecessors, (18931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5595 states to 5595 states and 18931 transitions. [2021-05-21 21:36:09,052 INFO L78 Accepts]: Start accepts. Automaton has 5595 states and 18931 transitions. Word has length 39 [2021-05-21 21:36:09,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:09,052 INFO L482 AbstractCegarLoop]: Abstraction has 5595 states and 18931 transitions. [2021-05-21 21:36:09,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:09,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5595 states and 18931 transitions. [2021-05-21 21:36:09,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:09,059 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:09,059 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:09,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable464 [2021-05-21 21:36:09,059 INFO L430 AbstractCegarLoop]: === Iteration 466 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:09,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:09,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1511085210, now seen corresponding path program 466 times [2021-05-21 21:36:09,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:09,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012804923] [2021-05-21 21:36:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:09,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:09,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012804923] [2021-05-21 21:36:09,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012804923] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:09,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:09,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:09,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958715723] [2021-05-21 21:36:09,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:09,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:09,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:09,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:09,215 INFO L87 Difference]: Start difference. First operand 5595 states and 18931 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:10,132 INFO L93 Difference]: Finished difference Result 5888 states and 19784 transitions. [2021-05-21 21:36:10,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:36:10,132 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:10,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:10,141 INFO L225 Difference]: With dead ends: 5888 [2021-05-21 21:36:10,142 INFO L226 Difference]: Without dead ends: 5765 [2021-05-21 21:36:10,142 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 578.0ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:36:10,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5765 states. [2021-05-21 21:36:10,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5765 to 5563. [2021-05-21 21:36:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5563 states, 5562 states have (on average 3.383495145631068) internal successors, (18819), 5562 states have internal predecessors, (18819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:10,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5563 states to 5563 states and 18819 transitions. [2021-05-21 21:36:10,219 INFO L78 Accepts]: Start accepts. Automaton has 5563 states and 18819 transitions. Word has length 39 [2021-05-21 21:36:10,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:10,219 INFO L482 AbstractCegarLoop]: Abstraction has 5563 states and 18819 transitions. [2021-05-21 21:36:10,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:10,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5563 states and 18819 transitions. [2021-05-21 21:36:10,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:10,226 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:10,226 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:10,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable465 [2021-05-21 21:36:10,226 INFO L430 AbstractCegarLoop]: === Iteration 467 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:10,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:10,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1008622812, now seen corresponding path program 467 times [2021-05-21 21:36:10,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:10,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066983959] [2021-05-21 21:36:10,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:10,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:10,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066983959] [2021-05-21 21:36:10,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066983959] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:10,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:10,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:10,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323410709] [2021-05-21 21:36:10,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:10,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:10,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:10,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:10,380 INFO L87 Difference]: Start difference. First operand 5563 states and 18819 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:11,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:11,340 INFO L93 Difference]: Finished difference Result 5872 states and 19734 transitions. [2021-05-21 21:36:11,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-21 21:36:11,340 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:11,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:11,349 INFO L225 Difference]: With dead ends: 5872 [2021-05-21 21:36:11,349 INFO L226 Difference]: Without dead ends: 5809 [2021-05-21 21:36:11,349 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 632.7ms TimeCoverageRelationStatistics Valid=231, Invalid=2121, Unknown=0, NotChecked=0, Total=2352 [2021-05-21 21:36:11,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5809 states. [2021-05-21 21:36:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5809 to 5563. [2021-05-21 21:36:11,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5563 states, 5562 states have (on average 3.3827759798633585) internal successors, (18815), 5562 states have internal predecessors, (18815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5563 states to 5563 states and 18815 transitions. [2021-05-21 21:36:11,423 INFO L78 Accepts]: Start accepts. Automaton has 5563 states and 18815 transitions. Word has length 39 [2021-05-21 21:36:11,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:11,424 INFO L482 AbstractCegarLoop]: Abstraction has 5563 states and 18815 transitions. [2021-05-21 21:36:11,424 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:11,424 INFO L276 IsEmpty]: Start isEmpty. Operand 5563 states and 18815 transitions. [2021-05-21 21:36:11,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:11,430 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:11,430 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:11,430 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable466 [2021-05-21 21:36:11,430 INFO L430 AbstractCegarLoop]: === Iteration 468 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:11,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:11,431 INFO L82 PathProgramCache]: Analyzing trace with hash 763130714, now seen corresponding path program 468 times [2021-05-21 21:36:11,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:11,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792467461] [2021-05-21 21:36:11,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:11,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:11,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792467461] [2021-05-21 21:36:11,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792467461] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:11,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:11,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:11,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146250567] [2021-05-21 21:36:11,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:11,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:11,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:11,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:11,585 INFO L87 Difference]: Start difference. First operand 5563 states and 18815 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:12,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:12,472 INFO L93 Difference]: Finished difference Result 5889 states and 19760 transitions. [2021-05-21 21:36:12,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 21:36:12,473 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:12,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:12,482 INFO L225 Difference]: With dead ends: 5889 [2021-05-21 21:36:12,482 INFO L226 Difference]: Without dead ends: 5846 [2021-05-21 21:36:12,482 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 567.3ms TimeCoverageRelationStatistics Valid=206, Invalid=1956, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:36:12,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2021-05-21 21:36:12,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 5569. [2021-05-21 21:36:12,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5569 states, 5568 states have (on average 3.3814655172413794) internal successors, (18828), 5568 states have internal predecessors, (18828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5569 states to 5569 states and 18828 transitions. [2021-05-21 21:36:12,560 INFO L78 Accepts]: Start accepts. Automaton has 5569 states and 18828 transitions. Word has length 39 [2021-05-21 21:36:12,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:12,560 INFO L482 AbstractCegarLoop]: Abstraction has 5569 states and 18828 transitions. [2021-05-21 21:36:12,560 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:12,560 INFO L276 IsEmpty]: Start isEmpty. Operand 5569 states and 18828 transitions. [2021-05-21 21:36:12,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:12,567 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:12,567 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:12,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable467 [2021-05-21 21:36:12,567 INFO L430 AbstractCegarLoop]: === Iteration 469 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:12,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:12,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1592661884, now seen corresponding path program 469 times [2021-05-21 21:36:12,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:12,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130137236] [2021-05-21 21:36:12,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:12,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:12,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:12,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130137236] [2021-05-21 21:36:12,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130137236] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:12,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:12,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:12,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469492242] [2021-05-21 21:36:12,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:12,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:12,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:12,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:12,721 INFO L87 Difference]: Start difference. First operand 5569 states and 18828 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:13,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:13,641 INFO L93 Difference]: Finished difference Result 5844 states and 19656 transitions. [2021-05-21 21:36:13,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:36:13,642 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:13,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:13,651 INFO L225 Difference]: With dead ends: 5844 [2021-05-21 21:36:13,651 INFO L226 Difference]: Without dead ends: 5781 [2021-05-21 21:36:13,652 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 557.9ms TimeCoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:36:13,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5781 states. [2021-05-21 21:36:13,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5781 to 5551. [2021-05-21 21:36:13,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5551 states, 5550 states have (on average 3.3846846846846845) internal successors, (18785), 5550 states have internal predecessors, (18785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:13,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 18785 transitions. [2021-05-21 21:36:13,735 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 18785 transitions. Word has length 39 [2021-05-21 21:36:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:13,735 INFO L482 AbstractCegarLoop]: Abstraction has 5551 states and 18785 transitions. [2021-05-21 21:36:13,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 18785 transitions. [2021-05-21 21:36:13,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:13,742 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:13,743 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:13,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable468 [2021-05-21 21:36:13,743 INFO L430 AbstractCegarLoop]: === Iteration 470 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:13,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:13,743 INFO L82 PathProgramCache]: Analyzing trace with hash -420573924, now seen corresponding path program 470 times [2021-05-21 21:36:13,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:13,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100681364] [2021-05-21 21:36:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:13,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:13,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100681364] [2021-05-21 21:36:13,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100681364] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:13,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:13,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:13,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516930347] [2021-05-21 21:36:13,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:13,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:13,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:13,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:13,900 INFO L87 Difference]: Start difference. First operand 5551 states and 18785 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:14,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:14,890 INFO L93 Difference]: Finished difference Result 5948 states and 19899 transitions. [2021-05-21 21:36:14,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-21 21:36:14,890 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:14,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:14,899 INFO L225 Difference]: With dead ends: 5948 [2021-05-21 21:36:14,900 INFO L226 Difference]: Without dead ends: 5893 [2021-05-21 21:36:14,900 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 647.1ms TimeCoverageRelationStatistics Valid=238, Invalid=2212, Unknown=0, NotChecked=0, Total=2450 [2021-05-21 21:36:14,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2021-05-21 21:36:14,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 5553. [2021-05-21 21:36:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5553 states, 5552 states have (on average 3.3843659942363113) internal successors, (18790), 5552 states have internal predecessors, (18790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:14,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 18790 transitions. [2021-05-21 21:36:14,970 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 18790 transitions. Word has length 39 [2021-05-21 21:36:14,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:14,970 INFO L482 AbstractCegarLoop]: Abstraction has 5553 states and 18790 transitions. [2021-05-21 21:36:14,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:14,970 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 18790 transitions. [2021-05-21 21:36:14,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:14,976 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:14,976 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:14,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable469 [2021-05-21 21:36:14,976 INFO L430 AbstractCegarLoop]: === Iteration 471 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:14,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:14,977 INFO L82 PathProgramCache]: Analyzing trace with hash 916484090, now seen corresponding path program 471 times [2021-05-21 21:36:14,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:14,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94650090] [2021-05-21 21:36:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:15,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:15,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94650090] [2021-05-21 21:36:15,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94650090] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:15,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:15,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:15,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994232616] [2021-05-21 21:36:15,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:15,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:15,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:15,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:15,133 INFO L87 Difference]: Start difference. First operand 5553 states and 18790 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:16,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:16,057 INFO L93 Difference]: Finished difference Result 5924 states and 19833 transitions. [2021-05-21 21:36:16,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:36:16,058 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:16,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:16,067 INFO L225 Difference]: With dead ends: 5924 [2021-05-21 21:36:16,067 INFO L226 Difference]: Without dead ends: 5881 [2021-05-21 21:36:16,068 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 583.5ms TimeCoverageRelationStatistics Valid=212, Invalid=1950, Unknown=0, NotChecked=0, Total=2162 [2021-05-21 21:36:16,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5881 states. [2021-05-21 21:36:16,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5881 to 5559. [2021-05-21 21:36:16,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5559 states, 5558 states have (on average 3.383051457358762) internal successors, (18803), 5558 states have internal predecessors, (18803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:16,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5559 states to 5559 states and 18803 transitions. [2021-05-21 21:36:16,153 INFO L78 Accepts]: Start accepts. Automaton has 5559 states and 18803 transitions. Word has length 39 [2021-05-21 21:36:16,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:16,153 INFO L482 AbstractCegarLoop]: Abstraction has 5559 states and 18803 transitions. [2021-05-21 21:36:16,153 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:16,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5559 states and 18803 transitions. [2021-05-21 21:36:16,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:16,160 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:16,160 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:16,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable470 [2021-05-21 21:36:16,160 INFO L430 AbstractCegarLoop]: === Iteration 472 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:16,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:16,160 INFO L82 PathProgramCache]: Analyzing trace with hash 645064540, now seen corresponding path program 472 times [2021-05-21 21:36:16,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:16,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114415753] [2021-05-21 21:36:16,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:16,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:16,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114415753] [2021-05-21 21:36:16,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114415753] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:16,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:16,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:16,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346963540] [2021-05-21 21:36:16,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:16,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:16,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:16,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:16,318 INFO L87 Difference]: Start difference. First operand 5559 states and 18803 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:17,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:17,199 INFO L93 Difference]: Finished difference Result 5893 states and 19766 transitions. [2021-05-21 21:36:17,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-21 21:36:17,199 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:17,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:17,208 INFO L225 Difference]: With dead ends: 5893 [2021-05-21 21:36:17,208 INFO L226 Difference]: Without dead ends: 5842 [2021-05-21 21:36:17,209 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 560.7ms TimeCoverageRelationStatistics Valid=203, Invalid=1867, Unknown=0, NotChecked=0, Total=2070 [2021-05-21 21:36:17,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5842 states. [2021-05-21 21:36:17,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5842 to 5553. [2021-05-21 21:36:17,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5553 states, 5552 states have (on average 3.384005763688761) internal successors, (18788), 5552 states have internal predecessors, (18788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:17,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 18788 transitions. [2021-05-21 21:36:17,288 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 18788 transitions. Word has length 39 [2021-05-21 21:36:17,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:17,288 INFO L482 AbstractCegarLoop]: Abstraction has 5553 states and 18788 transitions. [2021-05-21 21:36:17,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:17,288 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 18788 transitions. [2021-05-21 21:36:17,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:17,295 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:17,295 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:17,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable471 [2021-05-21 21:36:17,295 INFO L430 AbstractCegarLoop]: === Iteration 473 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:17,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:17,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1586900344, now seen corresponding path program 473 times [2021-05-21 21:36:17,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:17,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475945744] [2021-05-21 21:36:17,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:17,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:17,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475945744] [2021-05-21 21:36:17,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475945744] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:17,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:17,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:17,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875197777] [2021-05-21 21:36:17,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:17,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:17,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:17,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:17,451 INFO L87 Difference]: Start difference. First operand 5553 states and 18788 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:19,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:19,210 INFO L93 Difference]: Finished difference Result 7223 states and 24278 transitions. [2021-05-21 21:36:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-21 21:36:19,211 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:19,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:19,222 INFO L225 Difference]: With dead ends: 7223 [2021-05-21 21:36:19,222 INFO L226 Difference]: Without dead ends: 7184 [2021-05-21 21:36:19,222 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 1106.2ms TimeCoverageRelationStatistics Valid=396, Invalid=4160, Unknown=0, NotChecked=0, Total=4556 [2021-05-21 21:36:19,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7184 states. [2021-05-21 21:36:19,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7184 to 5575. [2021-05-21 21:36:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5575 states, 5574 states have (on average 3.384104772156441) internal successors, (18863), 5574 states have internal predecessors, (18863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:19,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5575 states to 5575 states and 18863 transitions. [2021-05-21 21:36:19,306 INFO L78 Accepts]: Start accepts. Automaton has 5575 states and 18863 transitions. Word has length 39 [2021-05-21 21:36:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:19,306 INFO L482 AbstractCegarLoop]: Abstraction has 5575 states and 18863 transitions. [2021-05-21 21:36:19,307 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:19,307 INFO L276 IsEmpty]: Start isEmpty. Operand 5575 states and 18863 transitions. [2021-05-21 21:36:19,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:19,314 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:19,314 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:19,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable472 [2021-05-21 21:36:19,314 INFO L430 AbstractCegarLoop]: === Iteration 474 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:19,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:19,314 INFO L82 PathProgramCache]: Analyzing trace with hash 950082538, now seen corresponding path program 474 times [2021-05-21 21:36:19,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:19,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244269030] [2021-05-21 21:36:19,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:19,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:19,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:19,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244269030] [2021-05-21 21:36:19,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244269030] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:19,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:19,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:19,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023640508] [2021-05-21 21:36:19,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:19,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:19,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:19,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:19,470 INFO L87 Difference]: Start difference. First operand 5575 states and 18863 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:21,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:21,196 INFO L93 Difference]: Finished difference Result 7211 states and 24234 transitions. [2021-05-21 21:36:21,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-21 21:36:21,196 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:21,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:21,208 INFO L225 Difference]: With dead ends: 7211 [2021-05-21 21:36:21,208 INFO L226 Difference]: Without dead ends: 7156 [2021-05-21 21:36:21,208 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1043.4ms TimeCoverageRelationStatistics Valid=380, Invalid=4042, Unknown=0, NotChecked=0, Total=4422 [2021-05-21 21:36:21,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7156 states. [2021-05-21 21:36:21,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7156 to 5563. [2021-05-21 21:36:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5563 states, 5562 states have (on average 3.3852930600503415) internal successors, (18829), 5562 states have internal predecessors, (18829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:21,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5563 states to 5563 states and 18829 transitions. [2021-05-21 21:36:21,293 INFO L78 Accepts]: Start accepts. Automaton has 5563 states and 18829 transitions. Word has length 39 [2021-05-21 21:36:21,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:21,293 INFO L482 AbstractCegarLoop]: Abstraction has 5563 states and 18829 transitions. [2021-05-21 21:36:21,293 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:21,293 INFO L276 IsEmpty]: Start isEmpty. Operand 5563 states and 18829 transitions. [2021-05-21 21:36:21,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:21,299 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:21,300 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:21,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable473 [2021-05-21 21:36:21,300 INFO L430 AbstractCegarLoop]: === Iteration 475 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:21,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:21,300 INFO L82 PathProgramCache]: Analyzing trace with hash -596114822, now seen corresponding path program 475 times [2021-05-21 21:36:21,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:21,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732654830] [2021-05-21 21:36:21,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:21,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:21,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732654830] [2021-05-21 21:36:21,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732654830] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:21,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:21,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:21,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111196681] [2021-05-21 21:36:21,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:21,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:21,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:21,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:21,457 INFO L87 Difference]: Start difference. First operand 5563 states and 18829 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:22,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:22,417 INFO L93 Difference]: Finished difference Result 5963 states and 19963 transitions. [2021-05-21 21:36:22,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:36:22,417 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:22,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:22,426 INFO L225 Difference]: With dead ends: 5963 [2021-05-21 21:36:22,426 INFO L226 Difference]: Without dead ends: 5872 [2021-05-21 21:36:22,427 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 592.9ms TimeCoverageRelationStatistics Valid=217, Invalid=2039, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:36:22,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5872 states. [2021-05-21 21:36:22,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5872 to 5569. [2021-05-21 21:36:22,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5569 states, 5568 states have (on average 3.38433908045977) internal successors, (18844), 5568 states have internal predecessors, (18844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:22,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5569 states to 5569 states and 18844 transitions. [2021-05-21 21:36:22,507 INFO L78 Accepts]: Start accepts. Automaton has 5569 states and 18844 transitions. Word has length 39 [2021-05-21 21:36:22,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:22,507 INFO L482 AbstractCegarLoop]: Abstraction has 5569 states and 18844 transitions. [2021-05-21 21:36:22,507 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:22,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5569 states and 18844 transitions. [2021-05-21 21:36:22,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:22,513 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:22,513 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:22,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable474 [2021-05-21 21:36:22,514 INFO L430 AbstractCegarLoop]: === Iteration 476 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:22,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:22,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1446203772, now seen corresponding path program 476 times [2021-05-21 21:36:22,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:22,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288514495] [2021-05-21 21:36:22,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:22,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:22,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:22,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288514495] [2021-05-21 21:36:22,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288514495] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:22,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:22,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:22,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605123704] [2021-05-21 21:36:22,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:22,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:22,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:22,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:22,670 INFO L87 Difference]: Start difference. First operand 5569 states and 18844 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:23,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:23,636 INFO L93 Difference]: Finished difference Result 6013 states and 20049 transitions. [2021-05-21 21:36:23,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-21 21:36:23,636 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:23,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:23,646 INFO L225 Difference]: With dead ends: 6013 [2021-05-21 21:36:23,646 INFO L226 Difference]: Without dead ends: 5958 [2021-05-21 21:36:23,646 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 605.2ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:36:23,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5958 states. [2021-05-21 21:36:23,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5958 to 5571. [2021-05-21 21:36:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5571 states, 5570 states have (on average 3.384021543985637) internal successors, (18849), 5570 states have internal predecessors, (18849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:23,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5571 states to 5571 states and 18849 transitions. [2021-05-21 21:36:23,728 INFO L78 Accepts]: Start accepts. Automaton has 5571 states and 18849 transitions. Word has length 39 [2021-05-21 21:36:23,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:23,728 INFO L482 AbstractCegarLoop]: Abstraction has 5571 states and 18849 transitions. [2021-05-21 21:36:23,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:23,728 INFO L276 IsEmpty]: Start isEmpty. Operand 5571 states and 18849 transitions. [2021-05-21 21:36:23,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:23,735 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:23,735 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:23,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable475 [2021-05-21 21:36:23,736 INFO L430 AbstractCegarLoop]: === Iteration 477 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:23,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:23,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1511705510, now seen corresponding path program 477 times [2021-05-21 21:36:23,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:23,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427599000] [2021-05-21 21:36:23,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:23,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:23,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:23,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427599000] [2021-05-21 21:36:23,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427599000] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:23,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:23,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:23,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903083692] [2021-05-21 21:36:23,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:23,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:23,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:23,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:23,894 INFO L87 Difference]: Start difference. First operand 5571 states and 18849 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:24,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:24,770 INFO L93 Difference]: Finished difference Result 5948 states and 19897 transitions. [2021-05-21 21:36:24,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:36:24,770 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:24,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:24,780 INFO L225 Difference]: With dead ends: 5948 [2021-05-21 21:36:24,780 INFO L226 Difference]: Without dead ends: 5905 [2021-05-21 21:36:24,781 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 547.3ms TimeCoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 21:36:24,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5905 states. [2021-05-21 21:36:24,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5905 to 5577. [2021-05-21 21:36:24,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5577 states, 5576 states have (on average 3.3827116212338595) internal successors, (18862), 5576 states have internal predecessors, (18862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:24,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 18862 transitions. [2021-05-21 21:36:24,870 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 18862 transitions. Word has length 39 [2021-05-21 21:36:24,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:24,870 INFO L482 AbstractCegarLoop]: Abstraction has 5577 states and 18862 transitions. [2021-05-21 21:36:24,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 18862 transitions. [2021-05-21 21:36:24,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:24,878 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:24,878 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:24,878 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable476 [2021-05-21 21:36:24,878 INFO L430 AbstractCegarLoop]: === Iteration 478 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:24,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:24,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1783125060, now seen corresponding path program 478 times [2021-05-21 21:36:24,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:24,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224922000] [2021-05-21 21:36:24,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:25,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:25,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224922000] [2021-05-21 21:36:25,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224922000] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:25,038 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:25,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:25,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530825494] [2021-05-21 21:36:25,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:25,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:25,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:25,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:25,038 INFO L87 Difference]: Start difference. First operand 5577 states and 18862 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:25,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:25,929 INFO L93 Difference]: Finished difference Result 5917 states and 19830 transitions. [2021-05-21 21:36:25,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-21 21:36:25,930 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:25,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:25,938 INFO L225 Difference]: With dead ends: 5917 [2021-05-21 21:36:25,938 INFO L226 Difference]: Without dead ends: 5866 [2021-05-21 21:36:25,939 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 547.9ms TimeCoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2021-05-21 21:36:25,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5866 states. [2021-05-21 21:36:25,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5866 to 5571. [2021-05-21 21:36:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5571 states, 5570 states have (on average 3.383662477558348) internal successors, (18847), 5570 states have internal predecessors, (18847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:26,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5571 states to 5571 states and 18847 transitions. [2021-05-21 21:36:26,009 INFO L78 Accepts]: Start accepts. Automaton has 5571 states and 18847 transitions. Word has length 39 [2021-05-21 21:36:26,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:26,009 INFO L482 AbstractCegarLoop]: Abstraction has 5571 states and 18847 transitions. [2021-05-21 21:36:26,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:26,009 INFO L276 IsEmpty]: Start isEmpty. Operand 5571 states and 18847 transitions. [2021-05-21 21:36:26,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:26,015 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:26,015 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:26,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable477 [2021-05-21 21:36:26,015 INFO L430 AbstractCegarLoop]: === Iteration 479 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:26,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:26,015 INFO L82 PathProgramCache]: Analyzing trace with hash 279877352, now seen corresponding path program 479 times [2021-05-21 21:36:26,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:26,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33511129] [2021-05-21 21:36:26,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:26,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:26,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:26,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33511129] [2021-05-21 21:36:26,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33511129] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:26,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:26,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:26,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532943556] [2021-05-21 21:36:26,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:26,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:26,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:26,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:26,177 INFO L87 Difference]: Start difference. First operand 5571 states and 18847 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:27,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:27,835 INFO L93 Difference]: Finished difference Result 6897 states and 23071 transitions. [2021-05-21 21:36:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-21 21:36:27,836 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:27,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:27,846 INFO L225 Difference]: With dead ends: 6897 [2021-05-21 21:36:27,846 INFO L226 Difference]: Without dead ends: 6858 [2021-05-21 21:36:27,846 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 1086.1ms TimeCoverageRelationStatistics Valid=401, Invalid=4155, Unknown=0, NotChecked=0, Total=4556 [2021-05-21 21:36:27,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6858 states. [2021-05-21 21:36:27,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6858 to 5579. [2021-05-21 21:36:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5579 states, 5578 states have (on average 3.3838293295087847) internal successors, (18875), 5578 states have internal predecessors, (18875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:27,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5579 states to 5579 states and 18875 transitions. [2021-05-21 21:36:27,930 INFO L78 Accepts]: Start accepts. Automaton has 5579 states and 18875 transitions. Word has length 39 [2021-05-21 21:36:27,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:27,931 INFO L482 AbstractCegarLoop]: Abstraction has 5579 states and 18875 transitions. [2021-05-21 21:36:27,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:27,931 INFO L276 IsEmpty]: Start isEmpty. Operand 5579 states and 18875 transitions. [2021-05-21 21:36:27,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:27,938 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:27,938 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:27,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable478 [2021-05-21 21:36:27,938 INFO L430 AbstractCegarLoop]: === Iteration 480 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:27,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:27,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1478107062, now seen corresponding path program 480 times [2021-05-21 21:36:27,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:27,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637824186] [2021-05-21 21:36:27,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:28,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:28,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637824186] [2021-05-21 21:36:28,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637824186] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:28,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:28,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:28,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777774492] [2021-05-21 21:36:28,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:28,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:28,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:28,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:28,094 INFO L87 Difference]: Start difference. First operand 5579 states and 18875 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:29,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:29,673 INFO L93 Difference]: Finished difference Result 6885 states and 23027 transitions. [2021-05-21 21:36:29,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-21 21:36:29,673 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:29,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:29,685 INFO L225 Difference]: With dead ends: 6885 [2021-05-21 21:36:29,686 INFO L226 Difference]: Without dead ends: 6834 [2021-05-21 21:36:29,686 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 1002.1ms TimeCoverageRelationStatistics Valid=372, Invalid=3918, Unknown=0, NotChecked=0, Total=4290 [2021-05-21 21:36:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6834 states. [2021-05-21 21:36:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6834 to 5575. [2021-05-21 21:36:29,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5575 states, 5574 states have (on average 3.384104772156441) internal successors, (18863), 5574 states have internal predecessors, (18863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:29,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5575 states to 5575 states and 18863 transitions. [2021-05-21 21:36:29,778 INFO L78 Accepts]: Start accepts. Automaton has 5575 states and 18863 transitions. Word has length 39 [2021-05-21 21:36:29,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:29,778 INFO L482 AbstractCegarLoop]: Abstraction has 5575 states and 18863 transitions. [2021-05-21 21:36:29,778 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:29,779 INFO L276 IsEmpty]: Start isEmpty. Operand 5575 states and 18863 transitions. [2021-05-21 21:36:29,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:29,786 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:29,786 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:29,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable479 [2021-05-21 21:36:29,786 INFO L430 AbstractCegarLoop]: === Iteration 481 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:29,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:29,786 INFO L82 PathProgramCache]: Analyzing trace with hash 20698938, now seen corresponding path program 481 times [2021-05-21 21:36:29,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:29,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027944270] [2021-05-21 21:36:29,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:29,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:29,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:29,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027944270] [2021-05-21 21:36:29,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027944270] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:29,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:29,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-21 21:36:29,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258514854] [2021-05-21 21:36:29,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-21 21:36:29,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:29,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-21 21:36:29,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-05-21 21:36:29,933 INFO L87 Difference]: Start difference. First operand 5575 states and 18863 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:30,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:30,908 INFO L93 Difference]: Finished difference Result 5874 states and 19749 transitions. [2021-05-21 21:36:30,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-21 21:36:30,908 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:30,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:30,917 INFO L225 Difference]: With dead ends: 5874 [2021-05-21 21:36:30,917 INFO L226 Difference]: Without dead ends: 5811 [2021-05-21 21:36:30,917 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 640.7ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-05-21 21:36:30,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2021-05-21 21:36:30,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 5575. [2021-05-21 21:36:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5575 states, 5574 states have (on average 3.384104772156441) internal successors, (18863), 5574 states have internal predecessors, (18863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:30,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5575 states to 5575 states and 18863 transitions. [2021-05-21 21:36:30,994 INFO L78 Accepts]: Start accepts. Automaton has 5575 states and 18863 transitions. Word has length 39 [2021-05-21 21:36:30,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:30,994 INFO L482 AbstractCegarLoop]: Abstraction has 5575 states and 18863 transitions. [2021-05-21 21:36:30,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:30,994 INFO L276 IsEmpty]: Start isEmpty. Operand 5575 states and 18863 transitions. [2021-05-21 21:36:31,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:31,001 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:31,001 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:31,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable480 [2021-05-21 21:36:31,001 INFO L430 AbstractCegarLoop]: === Iteration 482 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:31,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:31,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1194958840, now seen corresponding path program 482 times [2021-05-21 21:36:31,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:31,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021393787] [2021-05-21 21:36:31,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:31,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:31,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:31,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021393787] [2021-05-21 21:36:31,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021393787] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:31,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:31,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:31,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875741299] [2021-05-21 21:36:31,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:31,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:31,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:31,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:31,155 INFO L87 Difference]: Start difference. First operand 5575 states and 18863 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:33,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:33,075 INFO L93 Difference]: Finished difference Result 6935 states and 23222 transitions. [2021-05-21 21:36:33,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-21 21:36:33,075 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:33,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:33,086 INFO L225 Difference]: With dead ends: 6935 [2021-05-21 21:36:33,086 INFO L226 Difference]: Without dead ends: 6872 [2021-05-21 21:36:33,087 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1705 ImplicationChecksByTransitivity, 1309.1ms TimeCoverageRelationStatistics Valid=523, Invalid=5329, Unknown=0, NotChecked=0, Total=5852 [2021-05-21 21:36:33,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6872 states. [2021-05-21 21:36:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6872 to 5597. [2021-05-21 21:36:33,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5597 states, 5596 states have (on average 3.384203002144389) internal successors, (18938), 5596 states have internal predecessors, (18938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5597 states to 5597 states and 18938 transitions. [2021-05-21 21:36:33,172 INFO L78 Accepts]: Start accepts. Automaton has 5597 states and 18938 transitions. Word has length 39 [2021-05-21 21:36:33,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:33,172 INFO L482 AbstractCegarLoop]: Abstraction has 5597 states and 18938 transitions. [2021-05-21 21:36:33,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:33,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5597 states and 18938 transitions. [2021-05-21 21:36:33,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:33,179 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:33,179 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:33,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable481 [2021-05-21 21:36:33,179 INFO L430 AbstractCegarLoop]: === Iteration 483 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:33,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:33,179 INFO L82 PathProgramCache]: Analyzing trace with hash -563025574, now seen corresponding path program 483 times [2021-05-21 21:36:33,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:33,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949494264] [2021-05-21 21:36:33,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:33,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:33,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949494264] [2021-05-21 21:36:33,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949494264] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:33,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:33,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:33,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702934997] [2021-05-21 21:36:33,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:33,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:33,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:33,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:33,336 INFO L87 Difference]: Start difference. First operand 5597 states and 18938 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:35,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 21:36:35,272 INFO L93 Difference]: Finished difference Result 6822 states and 22928 transitions. [2021-05-21 21:36:35,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-21 21:36:35,273 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-05-21 21:36:35,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 21:36:35,283 INFO L225 Difference]: With dead ends: 6822 [2021-05-21 21:36:35,283 INFO L226 Difference]: Without dead ends: 6739 [2021-05-21 21:36:35,283 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1241.0ms TimeCoverageRelationStatistics Valid=472, Invalid=4930, Unknown=0, NotChecked=0, Total=5402 [2021-05-21 21:36:35,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6739 states. [2021-05-21 21:36:35,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6739 to 5575. [2021-05-21 21:36:35,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5575 states, 5574 states have (on average 3.385540007176175) internal successors, (18871), 5574 states have internal predecessors, (18871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:35,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5575 states to 5575 states and 18871 transitions. [2021-05-21 21:36:35,366 INFO L78 Accepts]: Start accepts. Automaton has 5575 states and 18871 transitions. Word has length 39 [2021-05-21 21:36:35,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 21:36:35,366 INFO L482 AbstractCegarLoop]: Abstraction has 5575 states and 18871 transitions. [2021-05-21 21:36:35,366 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 21:36:35,366 INFO L276 IsEmpty]: Start isEmpty. Operand 5575 states and 18871 transitions. [2021-05-21 21:36:35,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 21:36:35,373 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 21:36:35,373 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 21:36:35,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable482 [2021-05-21 21:36:35,373 INFO L430 AbstractCegarLoop]: === Iteration 484 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-21 21:36:35,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 21:36:35,373 INFO L82 PathProgramCache]: Analyzing trace with hash 885313482, now seen corresponding path program 484 times [2021-05-21 21:36:35,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 21:36:35,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172635841] [2021-05-21 21:36:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 21:36:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 21:36:35,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 21:36:35,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 21:36:35,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172635841] [2021-05-21 21:36:35,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172635841] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 21:36:35,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 21:36:35,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-21 21:36:35,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316884203] [2021-05-21 21:36:35,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-21 21:36:35,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 21:36:35,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-21 21:36:35,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-05-21 21:36:35,529 INFO L87 Difference]: Start difference. First operand 5575 states and 18871 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-05-21 21:36:35,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-21 21:36:35,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable483 [2021-05-21 21:36:35,915 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-21 21:36:35,917 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 21:36:35,918 WARN L196 ceAbstractionStarter]: Timeout [2021-05-21 21:36:35,918 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 09:36:35 BasicIcfg [2021-05-21 21:36:35,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 21:36:35,919 INFO L168 Benchmark]: Toolchain (without parser) took 746116.10 ms. Allocated memory was 377.5 MB in the beginning and 1.4 GB in the end (delta: 975.2 MB). Free memory was 356.7 MB in the beginning and 973.6 MB in the end (delta: -616.9 MB). Peak memory consumption was 361.3 MB. Max. memory is 16.0 GB. [2021-05-21 21:36:35,919 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 377.5 MB. Free memory was 357.9 MB in the beginning and 357.8 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 21:36:35,919 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.24 ms. Allocated memory is still 377.5 MB. Free memory was 356.7 MB in the beginning and 355.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 21:36:35,919 INFO L168 Benchmark]: Boogie Preprocessor took 10.05 ms. Allocated memory is still 377.5 MB. Free memory was 355.2 MB in the beginning and 354.2 MB in the end (delta: 952.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 21:36:35,919 INFO L168 Benchmark]: RCFGBuilder took 211.63 ms. Allocated memory is still 377.5 MB. Free memory was 354.1 MB in the beginning and 341.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-05-21 21:36:35,919 INFO L168 Benchmark]: TraceAbstraction took 745872.74 ms. Allocated memory was 377.5 MB in the beginning and 1.4 GB in the end (delta: 975.2 MB). Free memory was 340.8 MB in the beginning and 973.6 MB in the end (delta: -632.8 MB). Peak memory consumption was 344.5 MB. Max. memory is 16.0 GB. [2021-05-21 21:36:35,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 377.5 MB. Free memory was 357.9 MB in the beginning and 357.8 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 18.24 ms. Allocated memory is still 377.5 MB. Free memory was 356.7 MB in the beginning and 355.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 10.05 ms. Allocated memory is still 377.5 MB. Free memory was 355.2 MB in the beginning and 354.2 MB in the end (delta: 952.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 211.63 ms. Allocated memory is still 377.5 MB. Free memory was 354.1 MB in the beginning and 341.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 745872.74 ms. Allocated memory was 377.5 MB in the beginning and 1.4 GB in the end (delta: 975.2 MB). Free memory was 340.8 MB in the beginning and 973.6 MB in the end (delta: -632.8 MB). Peak memory consumption was 344.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (5575states) and FLOYD_HOARE automaton (currently 14 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (303 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 82 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 745756.2ms, OverallIterations: 484, TraceHistogramMax: 1, EmptinessCheckTime: 2770.5ms, AutomataDifference: 629343.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 308.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 74217 SDtfs, 143532 SDslu, 718598 SDs, 0 SdLazy, 803879 SolverSat, 27510 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 225158.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27919 GetRequests, 624 SyntacticMatches, 998 SemanticMatches, 26297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392023 ImplicationChecksByTransitivity, 391315.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5597occurred in iteration=482, InterpolantAutomatonStates: 23516, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 34207.5ms AutomataMinimizationTime, 483 MinimizatonAttempts, 420290 StatesRemovedByMinimization, 481 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 180.8ms SsaConstructionTime, 680.3ms SatisfiabilityAnalysisTime, 76878.7ms InterpolantComputationTime, 18876 NumberOfCodeBlocks, 18876 NumberOfCodeBlocksAsserted, 484 NumberOfCheckSat, 18392 ConstructedInterpolants, 0 QuantifiedInterpolants, 240876 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 484 InterpolantComputations, 484 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown