/usr/bin/java -Xmx8000000000 -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 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 22:33:15,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 22:33:15,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 22:33:15,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 22:33:15,539 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 [2021-06-12 22:33:15,552 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 22:33:15,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 22:33:15,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 22:33:15,553 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 22:33:15,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 22:33:15,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 22:33:15,554 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 22:33:15,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 22:33:15,554 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 22:33:15,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 22:33:15,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 22:33:15,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 22:33:15,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 22:33:15,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 22:33:15,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 22:33:15,555 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 22:33:15,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 22:33:15,555 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 22:33:15,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 22:33:15,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 22:33:15,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 22:33:15,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 22:33:15,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 22:33:15,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 22:33:15,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 22:33:15,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 22:33:15,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 22:33:15,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 22:33:15,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 22:33:15,556 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 22:33:15,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 22:33:15,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 22:33:15,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 22:33:15,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 22:33:15,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 22:33:15,787 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-12 22:33:15,789 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-12 22:33:15,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl [2021-06-12 22:33:15,790 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl' [2021-06-12 22:33:15,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 22:33:15,816 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-12 22:33:15,817 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 22:33:15,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 22:33:15,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 22:33:15,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 10:33:15" (1/1) ... [2021-06-12 22:33:15,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 10:33:15" (1/1) ... [2021-06-12 22:33:15,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 22:33:15,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 22:33:15,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 22:33:15,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 22:33:15,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 10:33:15" (1/1) ... [2021-06-12 22:33:15,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 10:33:15" (1/1) ... [2021-06-12 22:33:15,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 10:33:15" (1/1) ... [2021-06-12 22:33:15,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 10:33:15" (1/1) ... [2021-06-12 22:33:15,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 10:33:15" (1/1) ... [2021-06-12 22:33:15,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 10:33:15" (1/1) ... [2021-06-12 22:33:15,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 10:33:15" (1/1) ... [2021-06-12 22:33:15,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 22:33:15,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 22:33:15,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 22:33:15,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 22:33:15,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 10:33:15" (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 [2021-06-12 22:33:15,900 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-12 22:33:15,900 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-12 22:33:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-12 22:33:15,900 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-12 22:33:15,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-12 22:33:15,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-12 22:33:15,901 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-12 22:33:15,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 22:33:15,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 22:33:15,901 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-12 22:33:15,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-12 22:33:15,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-12 22:33:15,901 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-12 22:33:15,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-12 22:33:15,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-12 22:33:15,902 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 22:33:16,081 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 22:33:16,082 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-12 22:33:16,083 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 10:33:16 BoogieIcfgContainer [2021-06-12 22:33:16,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 22:33:16,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 22:33:16,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 22:33:16,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 22:33:16,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 10:33:15" (1/2) ... [2021-06-12 22:33:16,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2727c519 and model type easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 10:33:16, skipping insertion in model container [2021-06-12 22:33:16,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 10:33:16" (2/2) ... [2021-06-12 22:33:16,087 INFO L111 eAbstractionObserver]: Analyzing ICFG easy10.wvr.bpl [2021-06-12 22:33:16,103 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 22:33:16,103 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 22:33:16,104 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 22:33:16,104 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 22:33:16,178 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-12 22:33:16,192 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-12 22:33:16,219 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 22:33:16,219 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 22:33:16,219 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 22:33:16,219 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 22:33:16,219 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 22:33:16,219 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 22:33:16,220 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 22:33:16,220 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 22:33:16,234 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 45 transitions, 122 flow [2021-06-12 22:33:16,514 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) [2021-06-12 22:33:16,529 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) [2021-06-12 22:33:16,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:16,569 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:16,570 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:16,570 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:16,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:16,574 INFO L82 PathProgramCache]: Analyzing trace with hash 303880058, now seen corresponding path program 1 times [2021-06-12 22:33:16,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:16,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689447654] [2021-06-12 22:33:16,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:16,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:16,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689447654] [2021-06-12 22:33:16,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689447654] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:16,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:16,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-12 22:33:16,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151261063] [2021-06-12 22:33:16,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 22:33:16,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:16,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 22:33:16,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 22:33:16,690 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) [2021-06-12 22:33:16,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:16,744 INFO L93 Difference]: Finished difference Result 4197 states and 14419 transitions. [2021-06-12 22:33:16,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 22:33:16,746 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 [2021-06-12 22:33:16,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:16,776 INFO L225 Difference]: With dead ends: 4197 [2021-06-12 22:33:16,776 INFO L226 Difference]: Without dead ends: 4197 [2021-06-12 22:33:16,777 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 22:33:16,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4197 states. [2021-06-12 22:33:16,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4197 to 4197. [2021-06-12 22:33:16,974 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) [2021-06-12 22:33:16,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 14419 transitions. [2021-06-12 22:33:16,989 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 14419 transitions. Word has length 39 [2021-06-12 22:33:16,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:16,989 INFO L482 AbstractCegarLoop]: Abstraction has 4197 states and 14419 transitions. [2021-06-12 22:33:16,989 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) [2021-06-12 22:33:16,989 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 14419 transitions. [2021-06-12 22:33:16,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:16,999 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:16,999 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:16,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 22:33:16,999 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:17,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:17,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1014168306, now seen corresponding path program 2 times [2021-06-12 22:33:17,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:17,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143130798] [2021-06-12 22:33:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:17,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:17,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143130798] [2021-06-12 22:33:17,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143130798] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:17,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:17,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-12 22:33:17,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59049252] [2021-06-12 22:33:17,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 22:33:17,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:17,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 22:33:17,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 22:33:17,024 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) [2021-06-12 22:33:17,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:17,049 INFO L93 Difference]: Finished difference Result 3290 states and 11077 transitions. [2021-06-12 22:33:17,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 22:33:17,050 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 [2021-06-12 22:33:17,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:17,064 INFO L225 Difference]: With dead ends: 3290 [2021-06-12 22:33:17,064 INFO L226 Difference]: Without dead ends: 3290 [2021-06-12 22:33:17,065 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 22:33:17,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2021-06-12 22:33:17,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 3290. [2021-06-12 22:33:17,195 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) [2021-06-12 22:33:17,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 11077 transitions. [2021-06-12 22:33:17,209 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 11077 transitions. Word has length 39 [2021-06-12 22:33:17,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:17,210 INFO L482 AbstractCegarLoop]: Abstraction has 3290 states and 11077 transitions. [2021-06-12 22:33:17,211 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) [2021-06-12 22:33:17,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 11077 transitions. [2021-06-12 22:33:17,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:17,222 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:17,223 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:17,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 22:33:17,223 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:17,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:17,225 INFO L82 PathProgramCache]: Analyzing trace with hash 145552618, now seen corresponding path program 3 times [2021-06-12 22:33:17,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:17,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085362675] [2021-06-12 22:33:17,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:17,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:17,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085362675] [2021-06-12 22:33:17,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085362675] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:17,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:17,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:33:17,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217202814] [2021-06-12 22:33:17,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:33:17,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:17,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:33:17,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:33:17,644 INFO L87 Difference]: Start difference. First operand 3290 states and 11077 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) [2021-06-12 22:33:18,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:18,714 INFO L93 Difference]: Finished difference Result 3661 states and 12223 transitions. [2021-06-12 22:33:18,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-12 22:33:18,716 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 [2021-06-12 22:33:18,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:18,736 INFO L225 Difference]: With dead ends: 3661 [2021-06-12 22:33:18,736 INFO L226 Difference]: Without dead ends: 3594 [2021-06-12 22:33:18,736 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 679.5ms TimeCoverageRelationStatistics Valid=157, Invalid=1325, Unknown=0, NotChecked=0, Total=1482 [2021-06-12 22:33:18,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2021-06-12 22:33:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3418. [2021-06-12 22:33:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3418 states, 3417 states have (on average 3.359964881474978) internal successors, (11481), 3417 states have internal predecessors, (11481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3418 states to 3418 states and 11481 transitions. [2021-06-12 22:33:18,819 INFO L78 Accepts]: Start accepts. Automaton has 3418 states and 11481 transitions. Word has length 39 [2021-06-12 22:33:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:18,820 INFO L482 AbstractCegarLoop]: Abstraction has 3418 states and 11481 transitions. [2021-06-12 22:33:18,820 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) [2021-06-12 22:33:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3418 states and 11481 transitions. [2021-06-12 22:33:18,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:18,827 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:18,827 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:18,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 22:33:18,827 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:18,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:18,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1736861464, now seen corresponding path program 4 times [2021-06-12 22:33:18,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:18,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806318406] [2021-06-12 22:33:18,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:19,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:19,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:19,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806318406] [2021-06-12 22:33:19,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806318406] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:19,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:19,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:33:19,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246827092] [2021-06-12 22:33:19,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:33:19,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:19,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:33:19,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:33:19,105 INFO L87 Difference]: Start difference. First operand 3418 states and 11481 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) [2021-06-12 22:33:20,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:20,649 INFO L93 Difference]: Finished difference Result 3717 states and 12358 transitions. [2021-06-12 22:33:20,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-12 22:33:20,649 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 [2021-06-12 22:33:20,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:20,664 INFO L225 Difference]: With dead ends: 3717 [2021-06-12 22:33:20,665 INFO L226 Difference]: Without dead ends: 3674 [2021-06-12 22:33:20,665 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 979.6ms TimeCoverageRelationStatistics Valid=221, Invalid=1941, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:33:20,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2021-06-12 22:33:20,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3424. [2021-06-12 22:33:20,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3424 states, 3423 states have (on average 3.357873210633947) internal successors, (11494), 3423 states have internal predecessors, (11494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:20,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3424 states to 3424 states and 11494 transitions. [2021-06-12 22:33:20,732 INFO L78 Accepts]: Start accepts. Automaton has 3424 states and 11494 transitions. Word has length 39 [2021-06-12 22:33:20,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:20,732 INFO L482 AbstractCegarLoop]: Abstraction has 3424 states and 11494 transitions. [2021-06-12 22:33:20,732 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) [2021-06-12 22:33:20,733 INFO L276 IsEmpty]: Start isEmpty. Operand 3424 states and 11494 transitions. [2021-06-12 22:33:20,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:20,739 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:20,739 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:20,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 22:33:20,739 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:20,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:20,740 INFO L82 PathProgramCache]: Analyzing trace with hash 777507530, now seen corresponding path program 5 times [2021-06-12 22:33:20,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:20,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196158787] [2021-06-12 22:33:20,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:20,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:20,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196158787] [2021-06-12 22:33:20,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196158787] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:20,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:20,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:33:20,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885101930] [2021-06-12 22:33:20,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:33:20,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:20,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:33:20,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:33:20,984 INFO L87 Difference]: Start difference. First operand 3424 states and 11494 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) [2021-06-12 22:33:22,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:22,350 INFO L93 Difference]: Finished difference Result 3672 states and 12254 transitions. [2021-06-12 22:33:22,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-12 22:33:22,351 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 [2021-06-12 22:33:22,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:22,359 INFO L225 Difference]: With dead ends: 3672 [2021-06-12 22:33:22,360 INFO L226 Difference]: Without dead ends: 3608 [2021-06-12 22:33:22,360 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 856.5ms TimeCoverageRelationStatistics Valid=209, Invalid=1771, Unknown=0, NotChecked=0, Total=1980 [2021-06-12 22:33:22,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2021-06-12 22:33:22,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 3406. [2021-06-12 22:33:22,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3405 states have (on average 3.3606461086637296) internal successors, (11443), 3405 states have internal predecessors, (11443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 11443 transitions. [2021-06-12 22:33:22,427 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 11443 transitions. Word has length 39 [2021-06-12 22:33:22,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:22,428 INFO L482 AbstractCegarLoop]: Abstraction has 3406 states and 11443 transitions. [2021-06-12 22:33:22,428 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) [2021-06-12 22:33:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 11443 transitions. [2021-06-12 22:33:22,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:22,433 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:22,434 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:22,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 22:33:22,434 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:22,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:22,434 INFO L82 PathProgramCache]: Analyzing trace with hash 368691914, now seen corresponding path program 6 times [2021-06-12 22:33:22,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:22,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286634806] [2021-06-12 22:33:22,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:22,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:22,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286634806] [2021-06-12 22:33:22,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286634806] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:22,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:22,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:33:22,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855167673] [2021-06-12 22:33:22,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:33:22,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:22,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:33:22,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:33:22,671 INFO L87 Difference]: Start difference. First operand 3406 states and 11443 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) [2021-06-12 22:33:23,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:23,916 INFO L93 Difference]: Finished difference Result 3717 states and 12377 transitions. [2021-06-12 22:33:23,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-12 22:33:23,916 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 [2021-06-12 22:33:23,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:23,924 INFO L225 Difference]: With dead ends: 3717 [2021-06-12 22:33:23,924 INFO L226 Difference]: Without dead ends: 3587 [2021-06-12 22:33:23,925 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 783.1ms TimeCoverageRelationStatistics Valid=210, Invalid=1860, Unknown=0, NotChecked=0, Total=2070 [2021-06-12 22:33:23,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3587 states. [2021-06-12 22:33:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 3382. [2021-06-12 22:33:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3382 states, 3381 states have (on average 3.3632061520260277) internal successors, (11371), 3381 states have internal predecessors, (11371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:23,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 11371 transitions. [2021-06-12 22:33:23,987 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 11371 transitions. Word has length 39 [2021-06-12 22:33:23,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:23,987 INFO L482 AbstractCegarLoop]: Abstraction has 3382 states and 11371 transitions. [2021-06-12 22:33:23,988 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) [2021-06-12 22:33:23,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 11371 transitions. [2021-06-12 22:33:23,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:23,993 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:23,993 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:23,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 22:33:23,994 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:23,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:23,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1925525418, now seen corresponding path program 7 times [2021-06-12 22:33:23,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:23,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201791208] [2021-06-12 22:33:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:24,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:24,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:24,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201791208] [2021-06-12 22:33:24,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201791208] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:24,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:24,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:24,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096705289] [2021-06-12 22:33:24,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:24,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:24,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:24,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:24,196 INFO L87 Difference]: Start difference. First operand 3382 states and 11371 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) [2021-06-12 22:33:25,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:25,300 INFO L93 Difference]: Finished difference Result 3691 states and 12292 transitions. [2021-06-12 22:33:25,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-12 22:33:25,300 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 [2021-06-12 22:33:25,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:25,308 INFO L225 Difference]: With dead ends: 3691 [2021-06-12 22:33:25,308 INFO L226 Difference]: Without dead ends: 3624 [2021-06-12 22:33:25,309 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 705.3ms TimeCoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2021-06-12 22:33:25,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2021-06-12 22:33:25,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3398. [2021-06-12 22:33:25,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3398 states, 3397 states have (on average 3.3591404180158966) internal successors, (11411), 3397 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) [2021-06-12 22:33:25,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3398 states to 3398 states and 11411 transitions. [2021-06-12 22:33:25,382 INFO L78 Accepts]: Start accepts. Automaton has 3398 states and 11411 transitions. Word has length 39 [2021-06-12 22:33:25,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:25,382 INFO L482 AbstractCegarLoop]: Abstraction has 3398 states and 11411 transitions. [2021-06-12 22:33:25,383 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) [2021-06-12 22:33:25,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3398 states and 11411 transitions. [2021-06-12 22:33:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:25,388 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:25,389 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:25,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-12 22:33:25,389 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:25,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:25,389 INFO L82 PathProgramCache]: Analyzing trace with hash 487027796, now seen corresponding path program 8 times [2021-06-12 22:33:25,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:25,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918869043] [2021-06-12 22:33:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:25,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:25,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918869043] [2021-06-12 22:33:25,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918869043] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:25,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:25,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:25,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520943579] [2021-06-12 22:33:25,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:25,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:25,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:25,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:25,607 INFO L87 Difference]: Start difference. First operand 3398 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) [2021-06-12 22:33:26,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:26,966 INFO L93 Difference]: Finished difference Result 3780 states and 12493 transitions. [2021-06-12 22:33:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:33:26,966 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 [2021-06-12 22:33:26,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:26,974 INFO L225 Difference]: With dead ends: 3780 [2021-06-12 22:33:26,975 INFO L226 Difference]: Without dead ends: 3737 [2021-06-12 22:33:26,975 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 903.1ms TimeCoverageRelationStatistics Valid=261, Invalid=2391, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:33:26,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-06-12 22:33:27,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3404. [2021-06-12 22:33:27,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3404 states, 3403 states have (on average 3.3570379077284747) internal successors, (11424), 3403 states have internal predecessors, (11424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 11424 transitions. [2021-06-12 22:33:27,037 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 11424 transitions. Word has length 39 [2021-06-12 22:33:27,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:27,037 INFO L482 AbstractCegarLoop]: Abstraction has 3404 states and 11424 transitions. [2021-06-12 22:33:27,037 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) [2021-06-12 22:33:27,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 11424 transitions. [2021-06-12 22:33:27,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:27,043 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:27,043 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:27,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-12 22:33:27,043 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:27,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:27,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1293570506, now seen corresponding path program 9 times [2021-06-12 22:33:27,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:27,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025260236] [2021-06-12 22:33:27,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:27,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:27,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025260236] [2021-06-12 22:33:27,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025260236] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:27,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:27,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:27,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953635958] [2021-06-12 22:33:27,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:27,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:27,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:27,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:27,246 INFO L87 Difference]: Start difference. First operand 3404 states and 11424 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) [2021-06-12 22:33:28,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:28,522 INFO L93 Difference]: Finished difference Result 3735 states and 12389 transitions. [2021-06-12 22:33:28,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-12 22:33:28,523 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 [2021-06-12 22:33:28,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:28,531 INFO L225 Difference]: With dead ends: 3735 [2021-06-12 22:33:28,531 INFO L226 Difference]: Without dead ends: 3671 [2021-06-12 22:33:28,532 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 859.7ms TimeCoverageRelationStatistics Valid=250, Invalid=2300, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:33:28,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2021-06-12 22:33:28,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3386. [2021-06-12 22:33:28,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 3.3621861152141803) internal successors, (11381), 3385 states have internal predecessors, (11381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:28,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 11381 transitions. [2021-06-12 22:33:28,612 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 11381 transitions. Word has length 39 [2021-06-12 22:33:28,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:28,612 INFO L482 AbstractCegarLoop]: Abstraction has 3386 states and 11381 transitions. [2021-06-12 22:33:28,612 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) [2021-06-12 22:33:28,612 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 11381 transitions. [2021-06-12 22:33:28,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:28,618 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:28,618 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:28,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-12 22:33:28,618 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:28,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:28,619 INFO L82 PathProgramCache]: Analyzing trace with hash 268889672, now seen corresponding path program 10 times [2021-06-12 22:33:28,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:28,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403204450] [2021-06-12 22:33:28,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:28,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:28,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403204450] [2021-06-12 22:33:28,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403204450] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:28,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:28,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:28,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26699184] [2021-06-12 22:33:28,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:28,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:28,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:28,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:28,815 INFO L87 Difference]: Start difference. First operand 3386 states and 11381 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) [2021-06-12 22:33:29,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:29,743 INFO L93 Difference]: Finished difference Result 3643 states and 12154 transitions. [2021-06-12 22:33:29,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-12 22:33:29,744 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 [2021-06-12 22:33:29,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:29,751 INFO L225 Difference]: With dead ends: 3643 [2021-06-12 22:33:29,752 INFO L226 Difference]: Without dead ends: 3576 [2021-06-12 22:33:29,752 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 585.9ms TimeCoverageRelationStatistics Valid=176, Invalid=1546, Unknown=0, NotChecked=0, Total=1722 [2021-06-12 22:33:29,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2021-06-12 22:33:29,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 3394. [2021-06-12 22:33:29,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.358974358974359) internal successors, (11397), 3393 states have internal predecessors, (11397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:29,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11397 transitions. [2021-06-12 22:33:29,811 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11397 transitions. Word has length 39 [2021-06-12 22:33:29,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:29,812 INFO L482 AbstractCegarLoop]: Abstraction has 3394 states and 11397 transitions. [2021-06-12 22:33:29,812 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) [2021-06-12 22:33:29,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11397 transitions. [2021-06-12 22:33:29,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:29,817 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:29,817 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:29,817 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-12 22:33:29,817 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:29,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:29,817 INFO L82 PathProgramCache]: Analyzing trace with hash 96746454, now seen corresponding path program 11 times [2021-06-12 22:33:29,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:29,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062716167] [2021-06-12 22:33:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:29,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:29,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:29,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062716167] [2021-06-12 22:33:29,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062716167] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:29,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:29,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:29,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541229228] [2021-06-12 22:33:30,000 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:30,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:30,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:30,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:30,000 INFO L87 Difference]: Start difference. First operand 3394 states and 11397 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) [2021-06-12 22:33:30,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:30,979 INFO L93 Difference]: Finished difference Result 3631 states and 12114 transitions. [2021-06-12 22:33:30,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-12 22:33:30,993 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 [2021-06-12 22:33:30,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:31,000 INFO L225 Difference]: With dead ends: 3631 [2021-06-12 22:33:31,000 INFO L226 Difference]: Without dead ends: 3568 [2021-06-12 22:33:31,001 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 615.9ms TimeCoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2021-06-12 22:33:31,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2021-06-12 22:33:31,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 3386. [2021-06-12 22:33:31,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 3.3610044313146235) internal successors, (11377), 3385 states have internal predecessors, (11377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:31,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 11377 transitions. [2021-06-12 22:33:31,062 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 11377 transitions. Word has length 39 [2021-06-12 22:33:31,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:31,063 INFO L482 AbstractCegarLoop]: Abstraction has 3386 states and 11377 transitions. [2021-06-12 22:33:31,063 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) [2021-06-12 22:33:31,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 11377 transitions. [2021-06-12 22:33:31,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:31,069 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:31,069 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:31,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-12 22:33:31,069 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:31,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:31,069 INFO L82 PathProgramCache]: Analyzing trace with hash -939409546, now seen corresponding path program 12 times [2021-06-12 22:33:31,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:31,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649138017] [2021-06-12 22:33:31,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:31,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:31,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649138017] [2021-06-12 22:33:31,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649138017] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:31,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:31,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:31,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476864868] [2021-06-12 22:33:31,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:31,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:31,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:31,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:31,256 INFO L87 Difference]: Start difference. First operand 3386 states and 11377 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) [2021-06-12 22:33:32,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:32,554 INFO L93 Difference]: Finished difference Result 3769 states and 12461 transitions. [2021-06-12 22:33:32,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-12 22:33:32,554 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 [2021-06-12 22:33:32,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:32,560 INFO L225 Difference]: With dead ends: 3769 [2021-06-12 22:33:32,560 INFO L226 Difference]: Without dead ends: 3726 [2021-06-12 22:33:32,561 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 865.5ms TimeCoverageRelationStatistics Valid=268, Invalid=2488, Unknown=0, NotChecked=0, Total=2756 [2021-06-12 22:33:32,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3726 states. [2021-06-12 22:33:32,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3726 to 3394. [2021-06-12 22:33:32,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.358974358974359) internal successors, (11397), 3393 states have internal predecessors, (11397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:32,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11397 transitions. [2021-06-12 22:33:32,615 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11397 transitions. Word has length 39 [2021-06-12 22:33:32,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:32,615 INFO L482 AbstractCegarLoop]: Abstraction has 3394 states and 11397 transitions. [2021-06-12 22:33:32,615 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) [2021-06-12 22:33:32,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11397 transitions. [2021-06-12 22:33:32,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:32,620 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:32,620 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:32,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-12 22:33:32,621 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:32,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:32,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1574959448, now seen corresponding path program 13 times [2021-06-12 22:33:32,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:32,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730919204] [2021-06-12 22:33:32,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:32,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:32,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730919204] [2021-06-12 22:33:32,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730919204] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:32,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:32,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:32,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446996797] [2021-06-12 22:33:32,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:32,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:32,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:32,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:32,801 INFO L87 Difference]: Start difference. First operand 3394 states and 11397 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) [2021-06-12 22:33:34,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:34,073 INFO L93 Difference]: Finished difference Result 3757 states and 12423 transitions. [2021-06-12 22:33:34,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:33:34,073 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 [2021-06-12 22:33:34,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:34,079 INFO L225 Difference]: With dead ends: 3757 [2021-06-12 22:33:34,079 INFO L226 Difference]: Without dead ends: 3705 [2021-06-12 22:33:34,080 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 844.9ms TimeCoverageRelationStatistics Valid=260, Invalid=2392, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:33:34,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2021-06-12 22:33:34,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3388. [2021-06-12 22:33:34,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 3.3604960141718334) internal successors, (11382), 3387 states have internal predecessors, (11382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:34,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 11382 transitions. [2021-06-12 22:33:34,134 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 11382 transitions. Word has length 39 [2021-06-12 22:33:34,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:34,134 INFO L482 AbstractCegarLoop]: Abstraction has 3388 states and 11382 transitions. [2021-06-12 22:33:34,134 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) [2021-06-12 22:33:34,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 11382 transitions. [2021-06-12 22:33:34,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:34,140 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:34,140 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:34,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-12 22:33:34,140 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:34,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:34,140 INFO L82 PathProgramCache]: Analyzing trace with hash -20925976, now seen corresponding path program 14 times [2021-06-12 22:33:34,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:34,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288452534] [2021-06-12 22:33:34,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:34,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:34,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288452534] [2021-06-12 22:33:34,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288452534] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:34,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:34,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:34,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124739648] [2021-06-12 22:33:34,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:34,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:34,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:34,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:34,312 INFO L87 Difference]: Start difference. First operand 3388 states and 11382 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) [2021-06-12 22:33:35,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:35,312 INFO L93 Difference]: Finished difference Result 3718 states and 12302 transitions. [2021-06-12 22:33:35,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-12 22:33:35,313 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 [2021-06-12 22:33:35,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:35,319 INFO L225 Difference]: With dead ends: 3718 [2021-06-12 22:33:35,319 INFO L226 Difference]: Without dead ends: 3663 [2021-06-12 22:33:35,320 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 630.8ms TimeCoverageRelationStatistics Valid=202, Invalid=1778, Unknown=0, NotChecked=0, Total=1980 [2021-06-12 22:33:35,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2021-06-12 22:33:35,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3388. [2021-06-12 22:33:35,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 3.359905521110127) internal successors, (11380), 3387 states have internal predecessors, (11380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:35,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 11380 transitions. [2021-06-12 22:33:35,375 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 11380 transitions. Word has length 39 [2021-06-12 22:33:35,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:35,375 INFO L482 AbstractCegarLoop]: Abstraction has 3388 states and 11380 transitions. [2021-06-12 22:33:35,375 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) [2021-06-12 22:33:35,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 11380 transitions. [2021-06-12 22:33:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:35,380 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:35,380 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:35,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-12 22:33:35,380 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:35,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:35,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1151726246, now seen corresponding path program 15 times [2021-06-12 22:33:35,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:35,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236243443] [2021-06-12 22:33:35,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:35,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:35,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:35,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236243443] [2021-06-12 22:33:35,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236243443] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:35,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:35,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:35,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486012873] [2021-06-12 22:33:35,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:35,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:35,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:35,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:35,574 INFO L87 Difference]: Start difference. First operand 3388 states and 11380 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) [2021-06-12 22:33:36,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:36,565 INFO L93 Difference]: Finished difference Result 3628 states and 12104 transitions. [2021-06-12 22:33:36,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-12 22:33:36,565 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 [2021-06-12 22:33:36,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:36,572 INFO L225 Difference]: With dead ends: 3628 [2021-06-12 22:33:36,572 INFO L226 Difference]: Without dead ends: 3564 [2021-06-12 22:33:36,572 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 642.7ms TimeCoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2021-06-12 22:33:36,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2021-06-12 22:33:36,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3382. [2021-06-12 22:33:36,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3382 states, 3381 states have (on average 3.3620230700976044) internal successors, (11367), 3381 states have internal predecessors, (11367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:36,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 11367 transitions. [2021-06-12 22:33:36,626 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 11367 transitions. Word has length 39 [2021-06-12 22:33:36,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:36,626 INFO L482 AbstractCegarLoop]: Abstraction has 3382 states and 11367 transitions. [2021-06-12 22:33:36,626 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) [2021-06-12 22:33:36,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 11367 transitions. [2021-06-12 22:33:36,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:36,631 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:36,631 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:36,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-12 22:33:36,631 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:36,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:36,631 INFO L82 PathProgramCache]: Analyzing trace with hash -901192728, now seen corresponding path program 16 times [2021-06-12 22:33:36,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:36,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332710923] [2021-06-12 22:33:36,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:36,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:36,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:36,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332710923] [2021-06-12 22:33:36,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332710923] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:36,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:36,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:36,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764802563] [2021-06-12 22:33:36,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:36,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:36,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:36,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:36,808 INFO L87 Difference]: Start difference. First operand 3382 states and 11367 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) [2021-06-12 22:33:38,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:38,115 INFO L93 Difference]: Finished difference Result 3835 states and 12644 transitions. [2021-06-12 22:33:38,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-12 22:33:38,115 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 [2021-06-12 22:33:38,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:38,121 INFO L225 Difference]: With dead ends: 3835 [2021-06-12 22:33:38,121 INFO L226 Difference]: Without dead ends: 3698 [2021-06-12 22:33:38,122 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 870.5ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:33:38,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-06-12 22:33:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3386. [2021-06-12 22:33:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 3.3610044313146235) internal successors, (11377), 3385 states have internal predecessors, (11377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 11377 transitions. [2021-06-12 22:33:38,180 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 11377 transitions. Word has length 39 [2021-06-12 22:33:38,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:38,180 INFO L482 AbstractCegarLoop]: Abstraction has 3386 states and 11377 transitions. [2021-06-12 22:33:38,180 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) [2021-06-12 22:33:38,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 11377 transitions. [2021-06-12 22:33:38,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:38,186 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:38,186 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:38,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-12 22:33:38,186 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:38,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:38,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1898883668, now seen corresponding path program 17 times [2021-06-12 22:33:38,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:38,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372923265] [2021-06-12 22:33:38,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:38,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:38,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:38,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372923265] [2021-06-12 22:33:38,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372923265] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:38,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:38,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:38,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800930706] [2021-06-12 22:33:38,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:38,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:38,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:38,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:38,354 INFO L87 Difference]: Start difference. First operand 3386 states and 11377 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) [2021-06-12 22:33:39,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:39,689 INFO L93 Difference]: Finished difference Result 3873 states and 12714 transitions. [2021-06-12 22:33:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:33:39,690 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 [2021-06-12 22:33:39,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:39,696 INFO L225 Difference]: With dead ends: 3873 [2021-06-12 22:33:39,696 INFO L226 Difference]: Without dead ends: 3809 [2021-06-12 22:33:39,698 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 866.0ms TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:33:39,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3809 states. [2021-06-12 22:33:39,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3809 to 3388. [2021-06-12 22:33:39,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 3.3604960141718334) internal successors, (11382), 3387 states have internal predecessors, (11382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:39,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 11382 transitions. [2021-06-12 22:33:39,769 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 11382 transitions. Word has length 39 [2021-06-12 22:33:39,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:39,769 INFO L482 AbstractCegarLoop]: Abstraction has 3388 states and 11382 transitions. [2021-06-12 22:33:39,769 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) [2021-06-12 22:33:39,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 11382 transitions. [2021-06-12 22:33:39,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:39,777 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:39,777 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:39,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-12 22:33:39,777 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:39,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:39,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1477600058, now seen corresponding path program 18 times [2021-06-12 22:33:39,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:39,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396593624] [2021-06-12 22:33:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:39,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:39,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:39,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396593624] [2021-06-12 22:33:39,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396593624] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:39,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:39,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:39,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440712349] [2021-06-12 22:33:39,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:39,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:39,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:39,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:39,962 INFO L87 Difference]: Start difference. First operand 3388 states and 11382 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) [2021-06-12 22:33:40,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:40,985 INFO L93 Difference]: Finished difference Result 3774 states and 12450 transitions. [2021-06-12 22:33:40,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-12 22:33:40,985 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 [2021-06-12 22:33:40,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:40,991 INFO L225 Difference]: With dead ends: 3774 [2021-06-12 22:33:40,991 INFO L226 Difference]: Without dead ends: 3719 [2021-06-12 22:33:40,992 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 643.0ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-06-12 22:33:41,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2021-06-12 22:33:41,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3388. [2021-06-12 22:33:41,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3387 states have (on average 3.359905521110127) internal successors, (11380), 3387 states have internal predecessors, (11380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:41,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 11380 transitions. [2021-06-12 22:33:41,046 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 11380 transitions. Word has length 39 [2021-06-12 22:33:41,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:41,046 INFO L482 AbstractCegarLoop]: Abstraction has 3388 states and 11380 transitions. [2021-06-12 22:33:41,046 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) [2021-06-12 22:33:41,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 11380 transitions. [2021-06-12 22:33:41,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:41,050 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:41,051 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:41,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-12 22:33:41,051 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:41,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:41,051 INFO L82 PathProgramCache]: Analyzing trace with hash -304947836, now seen corresponding path program 19 times [2021-06-12 22:33:41,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:41,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892759959] [2021-06-12 22:33:41,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:41,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:41,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:41,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892759959] [2021-06-12 22:33:41,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892759959] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:41,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:41,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:41,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275859257] [2021-06-12 22:33:41,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:41,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:41,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:41,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:41,241 INFO L87 Difference]: Start difference. First operand 3388 states and 11380 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) [2021-06-12 22:33:42,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:42,215 INFO L93 Difference]: Finished difference Result 3744 states and 12389 transitions. [2021-06-12 22:33:42,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-12 22:33:42,216 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 [2021-06-12 22:33:42,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:42,222 INFO L225 Difference]: With dead ends: 3744 [2021-06-12 22:33:42,222 INFO L226 Difference]: Without dead ends: 3684 [2021-06-12 22:33:42,222 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 634.7ms TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2021-06-12 22:33:42,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3684 states. [2021-06-12 22:33:42,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3684 to 3386. [2021-06-12 22:33:42,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 3.360413589364845) internal successors, (11375), 3385 states have internal predecessors, (11375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:42,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 11375 transitions. [2021-06-12 22:33:42,271 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 11375 transitions. Word has length 39 [2021-06-12 22:33:42,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:42,272 INFO L482 AbstractCegarLoop]: Abstraction has 3386 states and 11375 transitions. [2021-06-12 22:33:42,272 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) [2021-06-12 22:33:42,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 11375 transitions. [2021-06-12 22:33:42,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:42,276 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:42,276 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:42,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-12 22:33:42,276 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:42,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:42,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1910452918, now seen corresponding path program 20 times [2021-06-12 22:33:42,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:42,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485522250] [2021-06-12 22:33:42,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:42,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:42,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:42,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485522250] [2021-06-12 22:33:42,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485522250] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:42,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:42,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:33:42,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362287789] [2021-06-12 22:33:42,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:33:42,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:42,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:33:42,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:33:42,470 INFO L87 Difference]: Start difference. First operand 3386 states and 11375 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) [2021-06-12 22:33:43,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:43,354 INFO L93 Difference]: Finished difference Result 3655 states and 12176 transitions. [2021-06-12 22:33:43,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-12 22:33:43,354 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 [2021-06-12 22:33:43,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:43,360 INFO L225 Difference]: With dead ends: 3655 [2021-06-12 22:33:43,361 INFO L226 Difference]: Without dead ends: 3579 [2021-06-12 22:33:43,361 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 572.4ms TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2021-06-12 22:33:43,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2021-06-12 22:33:43,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3394. [2021-06-12 22:33:43,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.357206012378426) internal successors, (11391), 3393 states have internal predecessors, (11391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11391 transitions. [2021-06-12 22:33:43,413 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11391 transitions. Word has length 39 [2021-06-12 22:33:43,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:43,413 INFO L482 AbstractCegarLoop]: Abstraction has 3394 states and 11391 transitions. [2021-06-12 22:33:43,413 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) [2021-06-12 22:33:43,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11391 transitions. [2021-06-12 22:33:43,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:43,417 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:43,417 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:43,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-12 22:33:43,417 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:43,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:43,419 INFO L82 PathProgramCache]: Analyzing trace with hash 892399306, now seen corresponding path program 21 times [2021-06-12 22:33:43,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:43,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741749293] [2021-06-12 22:33:43,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:43,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:43,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:43,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741749293] [2021-06-12 22:33:43,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741749293] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:43,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:43,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:43,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482312033] [2021-06-12 22:33:43,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:43,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:43,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:43,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:43,587 INFO L87 Difference]: Start difference. First operand 3394 states and 11391 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) [2021-06-12 22:33:44,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:44,527 INFO L93 Difference]: Finished difference Result 3637 states and 12122 transitions. [2021-06-12 22:33:44,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-12 22:33:44,527 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 [2021-06-12 22:33:44,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:44,533 INFO L225 Difference]: With dead ends: 3637 [2021-06-12 22:33:44,533 INFO L226 Difference]: Without dead ends: 3559 [2021-06-12 22:33:44,534 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 598.6ms TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2021-06-12 22:33:44,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3559 states. [2021-06-12 22:33:44,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3559 to 3374. [2021-06-12 22:33:44,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3374 states, 3373 states have (on average 3.3628817076786244) internal successors, (11343), 3373 states have internal predecessors, (11343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:44,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3374 states to 3374 states and 11343 transitions. [2021-06-12 22:33:44,580 INFO L78 Accepts]: Start accepts. Automaton has 3374 states and 11343 transitions. Word has length 39 [2021-06-12 22:33:44,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:44,580 INFO L482 AbstractCegarLoop]: Abstraction has 3374 states and 11343 transitions. [2021-06-12 22:33:44,580 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) [2021-06-12 22:33:44,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3374 states and 11343 transitions. [2021-06-12 22:33:44,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:44,584 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:44,584 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:44,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-12 22:33:44,584 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:44,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:44,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1355658164, now seen corresponding path program 22 times [2021-06-12 22:33:44,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:44,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416217953] [2021-06-12 22:33:44,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:44,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:44,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416217953] [2021-06-12 22:33:44,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416217953] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:44,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:44,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:44,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052053818] [2021-06-12 22:33:44,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:44,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:44,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:44,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:44,772 INFO L87 Difference]: Start difference. First operand 3374 states and 11343 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) [2021-06-12 22:33:45,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:45,739 INFO L93 Difference]: Finished difference Result 3817 states and 12701 transitions. [2021-06-12 22:33:45,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-12 22:33:45,739 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 [2021-06-12 22:33:45,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:45,746 INFO L225 Difference]: With dead ends: 3817 [2021-06-12 22:33:45,746 INFO L226 Difference]: Without dead ends: 3750 [2021-06-12 22:33:45,747 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 605.4ms TimeCoverageRelationStatistics Valid=179, Invalid=1543, Unknown=0, NotChecked=0, Total=1722 [2021-06-12 22:33:45,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-06-12 22:33:45,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3406. [2021-06-12 22:33:45,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3405 states have (on average 3.358883994126285) internal successors, (11437), 3405 states have internal predecessors, (11437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:45,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 11437 transitions. [2021-06-12 22:33:45,819 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 11437 transitions. Word has length 39 [2021-06-12 22:33:45,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:45,819 INFO L482 AbstractCegarLoop]: Abstraction has 3406 states and 11437 transitions. [2021-06-12 22:33:45,819 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) [2021-06-12 22:33:45,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 11437 transitions. [2021-06-12 22:33:45,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:45,824 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:45,824 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:45,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-12 22:33:45,824 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:45,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:45,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1056895050, now seen corresponding path program 23 times [2021-06-12 22:33:45,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:45,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806725085] [2021-06-12 22:33:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:45,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:45,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806725085] [2021-06-12 22:33:45,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806725085] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:45,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:45,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:45,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38830492] [2021-06-12 22:33:45,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:45,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:45,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:45,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:45,994 INFO L87 Difference]: Start difference. First operand 3406 states and 11437 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) [2021-06-12 22:33:47,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:47,277 INFO L93 Difference]: Finished difference Result 3906 states and 12902 transitions. [2021-06-12 22:33:47,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:33:47,278 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 [2021-06-12 22:33:47,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:47,284 INFO L225 Difference]: With dead ends: 3906 [2021-06-12 22:33:47,284 INFO L226 Difference]: Without dead ends: 3863 [2021-06-12 22:33:47,285 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 820.6ms TimeCoverageRelationStatistics Valid=249, Invalid=2301, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:33:47,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2021-06-12 22:33:47,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3412. [2021-06-12 22:33:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3411 states have (on average 3.3567868660216944) internal successors, (11450), 3411 states have internal predecessors, (11450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:47,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 11450 transitions. [2021-06-12 22:33:47,336 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 11450 transitions. Word has length 39 [2021-06-12 22:33:47,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:47,336 INFO L482 AbstractCegarLoop]: Abstraction has 3412 states and 11450 transitions. [2021-06-12 22:33:47,336 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) [2021-06-12 22:33:47,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 11450 transitions. [2021-06-12 22:33:47,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:47,340 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:47,340 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:47,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-12 22:33:47,341 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:47,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:47,341 INFO L82 PathProgramCache]: Analyzing trace with hash -723703252, now seen corresponding path program 24 times [2021-06-12 22:33:47,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:47,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983932133] [2021-06-12 22:33:47,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:47,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:47,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983932133] [2021-06-12 22:33:47,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983932133] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:47,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:47,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:47,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149199413] [2021-06-12 22:33:47,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:47,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:47,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:47,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:47,547 INFO L87 Difference]: Start difference. First operand 3412 states and 11450 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) [2021-06-12 22:33:48,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:48,834 INFO L93 Difference]: Finished difference Result 3861 states and 12798 transitions. [2021-06-12 22:33:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-12 22:33:48,834 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 [2021-06-12 22:33:48,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:48,841 INFO L225 Difference]: With dead ends: 3861 [2021-06-12 22:33:48,841 INFO L226 Difference]: Without dead ends: 3797 [2021-06-12 22:33:48,841 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 863.7ms TimeCoverageRelationStatistics Valid=240, Invalid=2210, Unknown=0, NotChecked=0, Total=2450 [2021-06-12 22:33:48,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2021-06-12 22:33:48,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 3394. [2021-06-12 22:33:48,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.361921603300914) internal successors, (11407), 3393 states have internal predecessors, (11407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:48,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11407 transitions. [2021-06-12 22:33:48,888 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11407 transitions. Word has length 39 [2021-06-12 22:33:48,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:48,888 INFO L482 AbstractCegarLoop]: Abstraction has 3394 states and 11407 transitions. [2021-06-12 22:33:48,888 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) [2021-06-12 22:33:48,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11407 transitions. [2021-06-12 22:33:48,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:48,892 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:48,892 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:48,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-12 22:33:48,892 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:48,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:48,892 INFO L82 PathProgramCache]: Analyzing trace with hash 838756926, now seen corresponding path program 25 times [2021-06-12 22:33:48,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:48,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341035335] [2021-06-12 22:33:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:49,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:49,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341035335] [2021-06-12 22:33:49,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341035335] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:49,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:49,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:49,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026447637] [2021-06-12 22:33:49,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:49,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:49,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:49,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:49,082 INFO L87 Difference]: Start difference. First operand 3394 states and 11407 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) [2021-06-12 22:33:50,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:50,074 INFO L93 Difference]: Finished difference Result 3817 states and 12695 transitions. [2021-06-12 22:33:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-12 22:33:50,074 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 [2021-06-12 22:33:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:50,080 INFO L225 Difference]: With dead ends: 3817 [2021-06-12 22:33:50,080 INFO L226 Difference]: Without dead ends: 3750 [2021-06-12 22:33:50,081 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 608.4ms TimeCoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2021-06-12 22:33:50,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-06-12 22:33:50,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3402. [2021-06-12 22:33:50,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3401 states have (on average 3.358718024110556) internal successors, (11423), 3401 states have internal predecessors, (11423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:50,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 11423 transitions. [2021-06-12 22:33:50,127 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 11423 transitions. Word has length 39 [2021-06-12 22:33:50,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:50,127 INFO L482 AbstractCegarLoop]: Abstraction has 3402 states and 11423 transitions. [2021-06-12 22:33:50,127 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) [2021-06-12 22:33:50,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 11423 transitions. [2021-06-12 22:33:50,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:50,131 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:50,131 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:50,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-12 22:33:50,131 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:50,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:50,132 INFO L82 PathProgramCache]: Analyzing trace with hash 666613708, now seen corresponding path program 26 times [2021-06-12 22:33:50,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:50,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662295651] [2021-06-12 22:33:50,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:50,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:50,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662295651] [2021-06-12 22:33:50,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662295651] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:50,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:50,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:50,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563946298] [2021-06-12 22:33:50,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:50,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:50,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:50,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:50,317 INFO L87 Difference]: Start difference. First operand 3402 states and 11423 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) [2021-06-12 22:33:51,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:51,323 INFO L93 Difference]: Finished difference Result 3805 states and 12655 transitions. [2021-06-12 22:33:51,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-12 22:33:51,323 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 [2021-06-12 22:33:51,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:51,329 INFO L225 Difference]: With dead ends: 3805 [2021-06-12 22:33:51,330 INFO L226 Difference]: Without dead ends: 3742 [2021-06-12 22:33:51,330 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 603.5ms TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2021-06-12 22:33:51,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-06-12 22:33:51,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3394. [2021-06-12 22:33:51,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.3607427055702916) internal successors, (11403), 3393 states have internal predecessors, (11403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:51,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11403 transitions. [2021-06-12 22:33:51,377 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11403 transitions. Word has length 39 [2021-06-12 22:33:51,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:51,377 INFO L482 AbstractCegarLoop]: Abstraction has 3394 states and 11403 transitions. [2021-06-12 22:33:51,378 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) [2021-06-12 22:33:51,378 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11403 transitions. [2021-06-12 22:33:51,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:51,381 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:51,382 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:51,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-12 22:33:51,382 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:51,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:51,382 INFO L82 PathProgramCache]: Analyzing trace with hash -369542292, now seen corresponding path program 27 times [2021-06-12 22:33:51,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:51,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313256893] [2021-06-12 22:33:51,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:51,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:51,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313256893] [2021-06-12 22:33:51,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313256893] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:51,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:51,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:51,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226217626] [2021-06-12 22:33:51,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:51,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:51,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:51,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:51,555 INFO L87 Difference]: Start difference. First operand 3394 states and 11403 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) [2021-06-12 22:33:52,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:52,919 INFO L93 Difference]: Finished difference Result 3972 states and 13056 transitions. [2021-06-12 22:33:52,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:33:52,920 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 [2021-06-12 22:33:52,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:52,926 INFO L225 Difference]: With dead ends: 3972 [2021-06-12 22:33:52,926 INFO L226 Difference]: Without dead ends: 3929 [2021-06-12 22:33:52,927 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 861.8ms TimeCoverageRelationStatistics Valid=268, Invalid=2488, Unknown=0, NotChecked=0, Total=2756 [2021-06-12 22:33:52,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2021-06-12 22:33:52,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3402. [2021-06-12 22:33:52,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3401 states have (on average 3.358718024110556) internal successors, (11423), 3401 states have internal predecessors, (11423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 11423 transitions. [2021-06-12 22:33:52,976 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 11423 transitions. Word has length 39 [2021-06-12 22:33:52,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:52,976 INFO L482 AbstractCegarLoop]: Abstraction has 3402 states and 11423 transitions. [2021-06-12 22:33:52,976 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) [2021-06-12 22:33:52,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 11423 transitions. [2021-06-12 22:33:52,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:52,980 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:52,981 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:52,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-12 22:33:52,981 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:52,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:52,981 INFO L82 PathProgramCache]: Analyzing trace with hash 2144826702, now seen corresponding path program 28 times [2021-06-12 22:33:52,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:52,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549213670] [2021-06-12 22:33:52,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:53,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:53,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:53,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549213670] [2021-06-12 22:33:53,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549213670] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:53,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:53,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:53,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713610849] [2021-06-12 22:33:53,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:53,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:53,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:53,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:53,149 INFO L87 Difference]: Start difference. First operand 3402 states and 11423 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) [2021-06-12 22:33:54,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:54,437 INFO L93 Difference]: Finished difference Result 3960 states and 13018 transitions. [2021-06-12 22:33:54,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-12 22:33:54,442 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 [2021-06-12 22:33:54,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:54,448 INFO L225 Difference]: With dead ends: 3960 [2021-06-12 22:33:54,448 INFO L226 Difference]: Without dead ends: 3908 [2021-06-12 22:33:54,449 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 825.7ms TimeCoverageRelationStatistics Valid=260, Invalid=2392, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:33:54,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3908 states. [2021-06-12 22:33:54,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3908 to 3396. [2021-06-12 22:33:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 3.360235640648012) internal successors, (11408), 3395 states have internal predecessors, (11408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:54,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 11408 transitions. [2021-06-12 22:33:54,507 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 11408 transitions. Word has length 39 [2021-06-12 22:33:54,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:54,507 INFO L482 AbstractCegarLoop]: Abstraction has 3396 states and 11408 transitions. [2021-06-12 22:33:54,507 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) [2021-06-12 22:33:54,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 11408 transitions. [2021-06-12 22:33:54,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:54,511 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:54,511 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:54,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-12 22:33:54,511 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:54,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:54,511 INFO L82 PathProgramCache]: Analyzing trace with hash 548941278, now seen corresponding path program 29 times [2021-06-12 22:33:54,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:54,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280544914] [2021-06-12 22:33:54,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:54,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:54,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:54,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280544914] [2021-06-12 22:33:54,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280544914] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:54,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:54,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:54,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564310820] [2021-06-12 22:33:54,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:54,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:54,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:54,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:54,688 INFO L87 Difference]: Start difference. First operand 3396 states and 11408 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) [2021-06-12 22:33:55,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:55,739 INFO L93 Difference]: Finished difference Result 3933 states and 12929 transitions. [2021-06-12 22:33:55,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-12 22:33:55,739 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 [2021-06-12 22:33:55,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:55,745 INFO L225 Difference]: With dead ends: 3933 [2021-06-12 22:33:55,745 INFO L226 Difference]: Without dead ends: 3878 [2021-06-12 22:33:55,746 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 645.1ms TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2021-06-12 22:33:55,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2021-06-12 22:33:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3396. [2021-06-12 22:33:55,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 3.3596465390279824) internal successors, (11406), 3395 states have internal predecessors, (11406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:55,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 11406 transitions. [2021-06-12 22:33:55,793 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 11406 transitions. Word has length 39 [2021-06-12 22:33:55,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:55,793 INFO L482 AbstractCegarLoop]: Abstraction has 3396 states and 11406 transitions. [2021-06-12 22:33:55,793 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) [2021-06-12 22:33:55,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 11406 transitions. [2021-06-12 22:33:55,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:55,797 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:55,797 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:55,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-12 22:33:55,797 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:55,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:55,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1721593500, now seen corresponding path program 30 times [2021-06-12 22:33:55,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:55,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025000186] [2021-06-12 22:33:55,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:55,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:55,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025000186] [2021-06-12 22:33:55,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025000186] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:55,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:55,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:55,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266910052] [2021-06-12 22:33:55,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:55,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:55,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:55,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:55,972 INFO L87 Difference]: Start difference. First operand 3396 states and 11406 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) [2021-06-12 22:33:56,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:56,953 INFO L93 Difference]: Finished difference Result 3868 states and 12777 transitions. [2021-06-12 22:33:56,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-12 22:33:56,954 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 [2021-06-12 22:33:56,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:56,960 INFO L225 Difference]: With dead ends: 3868 [2021-06-12 22:33:56,960 INFO L226 Difference]: Without dead ends: 3822 [2021-06-12 22:33:56,961 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 599.6ms TimeCoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2021-06-12 22:33:56,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3822 states. [2021-06-12 22:33:57,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3822 to 3400. [2021-06-12 22:33:57,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3400 states, 3399 states have (on average 3.3580464842600763) internal successors, (11414), 3399 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) [2021-06-12 22:33:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 11414 transitions. [2021-06-12 22:33:57,011 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 11414 transitions. Word has length 39 [2021-06-12 22:33:57,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:57,011 INFO L482 AbstractCegarLoop]: Abstraction has 3400 states and 11414 transitions. [2021-06-12 22:33:57,011 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) [2021-06-12 22:33:57,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 11414 transitions. [2021-06-12 22:33:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:57,016 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:57,016 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:57,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-12 22:33:57,016 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:57,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:57,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1474127338, now seen corresponding path program 31 times [2021-06-12 22:33:57,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:57,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421572923] [2021-06-12 22:33:57,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:57,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:57,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421572923] [2021-06-12 22:33:57,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421572923] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:57,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:57,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:57,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791900254] [2021-06-12 22:33:57,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:57,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:57,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:57,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:57,198 INFO L87 Difference]: Start difference. First operand 3400 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) [2021-06-12 22:33:58,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:58,312 INFO L93 Difference]: Finished difference Result 3840 states and 12726 transitions. [2021-06-12 22:33:58,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:33:58,313 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 [2021-06-12 22:33:58,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:58,319 INFO L225 Difference]: With dead ends: 3840 [2021-06-12 22:33:58,319 INFO L226 Difference]: Without dead ends: 3791 [2021-06-12 22:33:58,319 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 713.1ms TimeCoverageRelationStatistics Valid=218, Invalid=1944, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:33:58,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2021-06-12 22:33:58,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 3390. [2021-06-12 22:33:58,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3390 states, 3389 states have (on average 3.361758630864562) internal successors, (11393), 3389 states have internal predecessors, (11393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:58,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 11393 transitions. [2021-06-12 22:33:58,369 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 11393 transitions. Word has length 39 [2021-06-12 22:33:58,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:58,369 INFO L482 AbstractCegarLoop]: Abstraction has 3390 states and 11393 transitions. [2021-06-12 22:33:58,369 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) [2021-06-12 22:33:58,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 11393 transitions. [2021-06-12 22:33:58,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:58,373 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:58,373 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:58,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-12 22:33:58,373 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:58,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:58,374 INFO L82 PathProgramCache]: Analyzing trace with hash -2117453782, now seen corresponding path program 32 times [2021-06-12 22:33:58,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:58,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058228726] [2021-06-12 22:33:58,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:58,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:58,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058228726] [2021-06-12 22:33:58,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058228726] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:58,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:58,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:58,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067626054] [2021-06-12 22:33:58,557 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:58,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:58,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:58,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:58,558 INFO L87 Difference]: Start difference. First operand 3390 states and 11393 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) [2021-06-12 22:33:59,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:33:59,465 INFO L93 Difference]: Finished difference Result 3789 states and 12635 transitions. [2021-06-12 22:33:59,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-12 22:33:59,465 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 [2021-06-12 22:33:59,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:33:59,471 INFO L225 Difference]: With dead ends: 3789 [2021-06-12 22:33:59,471 INFO L226 Difference]: Without dead ends: 3722 [2021-06-12 22:33:59,471 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 478.9ms TimeCoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2021-06-12 22:33:59,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2021-06-12 22:33:59,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 3430. [2021-06-12 22:33:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 3429 states have (on average 3.3540390784485274) internal successors, (11501), 3429 states have internal predecessors, (11501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:33:59,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 11501 transitions. [2021-06-12 22:33:59,519 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 11501 transitions. Word has length 39 [2021-06-12 22:33:59,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:33:59,519 INFO L482 AbstractCegarLoop]: Abstraction has 3430 states and 11501 transitions. [2021-06-12 22:33:59,520 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) [2021-06-12 22:33:59,520 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 11501 transitions. [2021-06-12 22:33:59,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:33:59,524 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:33:59,524 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:33:59,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-12 22:33:59,524 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:33:59,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:33:59,524 INFO L82 PathProgramCache]: Analyzing trace with hash 2005370296, now seen corresponding path program 33 times [2021-06-12 22:33:59,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:33:59,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884901940] [2021-06-12 22:33:59,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:33:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:33:59,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:33:59,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:33:59,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884901940] [2021-06-12 22:33:59,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884901940] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:33:59,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:33:59,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:33:59,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774413269] [2021-06-12 22:33:59,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:33:59,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:33:59,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:33:59,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:33:59,696 INFO L87 Difference]: Start difference. First operand 3430 states and 11501 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) [2021-06-12 22:34:00,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:00,625 INFO L93 Difference]: Finished difference Result 3777 states and 12595 transitions. [2021-06-12 22:34:00,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-12 22:34:00,626 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 [2021-06-12 22:34:00,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:00,632 INFO L225 Difference]: With dead ends: 3777 [2021-06-12 22:34:00,633 INFO L226 Difference]: Without dead ends: 3714 [2021-06-12 22:34:00,633 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 515.1ms TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2021-06-12 22:34:00,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2021-06-12 22:34:00,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3422. [2021-06-12 22:34:00,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3422 states, 3421 states have (on average 3.3548669979538146) internal successors, (11477), 3421 states have internal predecessors, (11477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:34:00,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 11477 transitions. [2021-06-12 22:34:00,689 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 11477 transitions. Word has length 39 [2021-06-12 22:34:00,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:00,689 INFO L482 AbstractCegarLoop]: Abstraction has 3422 states and 11477 transitions. [2021-06-12 22:34:00,689 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) [2021-06-12 22:34:00,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 11477 transitions. [2021-06-12 22:34:00,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:00,693 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:00,694 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:00,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-12 22:34:00,694 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:00,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:00,694 INFO L82 PathProgramCache]: Analyzing trace with hash 202536140, now seen corresponding path program 34 times [2021-06-12 22:34:00,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:00,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392329869] [2021-06-12 22:34:00,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:00,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:00,876 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:00,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392329869] [2021-06-12 22:34:00,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392329869] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:00,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:00,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:00,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377262184] [2021-06-12 22:34:00,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:00,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:00,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:00,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:00,877 INFO L87 Difference]: Start difference. First operand 3422 states and 11477 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) [2021-06-12 22:34:01,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:01,850 INFO L93 Difference]: Finished difference Result 3789 states and 12623 transitions. [2021-06-12 22:34:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-12 22:34:01,851 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 [2021-06-12 22:34:01,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:01,857 INFO L225 Difference]: With dead ends: 3789 [2021-06-12 22:34:01,858 INFO L226 Difference]: Without dead ends: 3666 [2021-06-12 22:34:01,858 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 528.3ms TimeCoverageRelationStatistics Valid=159, Invalid=1401, Unknown=0, NotChecked=0, Total=1560 [2021-06-12 22:34:01,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2021-06-12 22:34:01,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 3390. [2021-06-12 22:34:01,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3390 states, 3389 states have (on average 3.3570374741811744) internal successors, (11377), 3389 states have internal predecessors, (11377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:34:01,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 11377 transitions. [2021-06-12 22:34:01,912 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 11377 transitions. Word has length 39 [2021-06-12 22:34:01,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:01,913 INFO L482 AbstractCegarLoop]: Abstraction has 3390 states and 11377 transitions. [2021-06-12 22:34:01,913 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) [2021-06-12 22:34:01,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 11377 transitions. [2021-06-12 22:34:01,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:01,917 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:01,917 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:01,917 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-12 22:34:01,917 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:01,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:01,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1634096394, now seen corresponding path program 35 times [2021-06-12 22:34:01,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:01,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731087794] [2021-06-12 22:34:01,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:02,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:02,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:02,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731087794] [2021-06-12 22:34:02,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731087794] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:02,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:02,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:02,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824027333] [2021-06-12 22:34:02,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:02,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:02,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:02,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:02,086 INFO L87 Difference]: Start difference. First operand 3390 states and 11377 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) [2021-06-12 22:34:03,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:03,782 INFO L93 Difference]: Finished difference Result 5596 states and 19001 transitions. [2021-06-12 22:34:03,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-12 22:34:03,785 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 [2021-06-12 22:34:03,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:03,794 INFO L225 Difference]: With dead ends: 5596 [2021-06-12 22:34:03,794 INFO L226 Difference]: Without dead ends: 5553 [2021-06-12 22:34:03,795 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 950.8ms TimeCoverageRelationStatistics Valid=309, Invalid=3113, Unknown=0, NotChecked=0, Total=3422 [2021-06-12 22:34:03,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5553 states. [2021-06-12 22:34:03,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5553 to 3484. [2021-06-12 22:34:03,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3484 states, 3483 states have (on average 3.3545793855871375) internal successors, (11684), 3483 states have internal predecessors, (11684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:34:03,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 11684 transitions. [2021-06-12 22:34:03,853 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 11684 transitions. Word has length 39 [2021-06-12 22:34:03,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:03,853 INFO L482 AbstractCegarLoop]: Abstraction has 3484 states and 11684 transitions. [2021-06-12 22:34:03,853 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) [2021-06-12 22:34:03,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 11684 transitions. [2021-06-12 22:34:03,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:03,857 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:03,857 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:03,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-12 22:34:03,857 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:03,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:03,858 INFO L82 PathProgramCache]: Analyzing trace with hash -146501908, now seen corresponding path program 36 times [2021-06-12 22:34:03,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:03,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077813917] [2021-06-12 22:34:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:04,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:04,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077813917] [2021-06-12 22:34:04,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077813917] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:04,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:04,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:04,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102347734] [2021-06-12 22:34:04,024 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:04,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:04,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:04,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:04,024 INFO L87 Difference]: Start difference. First operand 3484 states and 11684 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) [2021-06-12 22:34:05,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:05,994 INFO L93 Difference]: Finished difference Result 6457 states and 21931 transitions. [2021-06-12 22:34:05,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-12 22:34:05,994 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 [2021-06-12 22:34:05,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:06,005 INFO L225 Difference]: With dead ends: 6457 [2021-06-12 22:34:06,005 INFO L226 Difference]: Without dead ends: 6405 [2021-06-12 22:34:06,005 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 1072.0ms TimeCoverageRelationStatistics Valid=351, Invalid=3809, Unknown=0, NotChecked=0, Total=4160 [2021-06-12 22:34:06,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2021-06-12 22:34:06,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 3478. [2021-06-12 22:34:06,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 3477 states have (on average 3.35605406960023) internal successors, (11669), 3477 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) [2021-06-12 22:34:06,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 11669 transitions. [2021-06-12 22:34:06,068 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 11669 transitions. Word has length 39 [2021-06-12 22:34:06,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:06,068 INFO L482 AbstractCegarLoop]: Abstraction has 3478 states and 11669 transitions. [2021-06-12 22:34:06,068 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) [2021-06-12 22:34:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 11669 transitions. [2021-06-12 22:34:06,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:06,072 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:06,072 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:06,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-12 22:34:06,072 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:06,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:06,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1742387332, now seen corresponding path program 37 times [2021-06-12 22:34:06,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:06,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31157544] [2021-06-12 22:34:06,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:06,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:06,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31157544] [2021-06-12 22:34:06,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31157544] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:06,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:06,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:06,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478304216] [2021-06-12 22:34:06,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:06,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:06,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:06,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:06,254 INFO L87 Difference]: Start difference. First operand 3478 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) [2021-06-12 22:34:07,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:07,719 INFO L93 Difference]: Finished difference Result 5485 states and 18455 transitions. [2021-06-12 22:34:07,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:34:07,719 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 [2021-06-12 22:34:07,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:07,728 INFO L225 Difference]: With dead ends: 5485 [2021-06-12 22:34:07,728 INFO L226 Difference]: Without dead ends: 5430 [2021-06-12 22:34:07,729 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 776.9ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:34:07,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5430 states. [2021-06-12 22:34:07,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5430 to 3562. [2021-06-12 22:34:07,783 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) [2021-06-12 22:34:07,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11947 transitions. [2021-06-12 22:34:07,790 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11947 transitions. Word has length 39 [2021-06-12 22:34:07,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:07,790 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11947 transitions. [2021-06-12 22:34:07,790 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) [2021-06-12 22:34:07,790 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11947 transitions. [2021-06-12 22:34:07,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:07,795 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:07,795 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:07,795 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-12 22:34:07,795 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:07,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:07,795 INFO L82 PathProgramCache]: Analyzing trace with hash -569735110, now seen corresponding path program 38 times [2021-06-12 22:34:07,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:07,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872501876] [2021-06-12 22:34:07,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:07,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:07,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:07,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872501876] [2021-06-12 22:34:07,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872501876] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:07,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:07,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:07,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238985475] [2021-06-12 22:34:07,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:07,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:07,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:07,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:07,996 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) [2021-06-12 22:34:09,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:09,594 INFO L93 Difference]: Finished difference Result 6346 states and 21389 transitions. [2021-06-12 22:34:09,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-12 22:34:09,594 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 [2021-06-12 22:34:09,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:09,605 INFO L225 Difference]: With dead ends: 6346 [2021-06-12 22:34:09,605 INFO L226 Difference]: Without dead ends: 6286 [2021-06-12 22:34:09,605 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 857.0ms TimeCoverageRelationStatistics Valid=275, Invalid=2805, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:34:09,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6286 states. [2021-06-12 22:34:09,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6286 to 3560. [2021-06-12 22:34:09,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 3559 states have (on average 3.3554369204832817) internal successors, (11942), 3559 states have internal predecessors, (11942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:34:09,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11942 transitions. [2021-06-12 22:34:09,692 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11942 transitions. Word has length 39 [2021-06-12 22:34:09,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:09,692 INFO L482 AbstractCegarLoop]: Abstraction has 3560 states and 11942 transitions. [2021-06-12 22:34:09,692 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) [2021-06-12 22:34:09,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11942 transitions. [2021-06-12 22:34:09,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:09,696 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:09,696 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:09,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-12 22:34:09,697 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:09,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:09,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1847828584, now seen corresponding path program 39 times [2021-06-12 22:34:09,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:09,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072187752] [2021-06-12 22:34:09,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:09,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:09,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072187752] [2021-06-12 22:34:09,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072187752] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:09,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:09,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:09,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858630720] [2021-06-12 22:34:09,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:09,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:09,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:09,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:09,865 INFO L87 Difference]: Start difference. First operand 3560 states and 11942 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) [2021-06-12 22:34:11,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:11,105 INFO L93 Difference]: Finished difference Result 5424 states and 18314 transitions. [2021-06-12 22:34:11,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-12 22:34:11,105 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 [2021-06-12 22:34:11,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:11,114 INFO L225 Difference]: With dead ends: 5424 [2021-06-12 22:34:11,114 INFO L226 Difference]: Without dead ends: 5333 [2021-06-12 22:34:11,115 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 635.8ms TimeCoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:34:11,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5333 states. [2021-06-12 22:34:11,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5333 to 3560. [2021-06-12 22:34:11,165 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) [2021-06-12 22:34:11,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11936 transitions. [2021-06-12 22:34:11,196 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11936 transitions. Word has length 39 [2021-06-12 22:34:11,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:11,196 INFO L482 AbstractCegarLoop]: Abstraction has 3560 states and 11936 transitions. [2021-06-12 22:34:11,196 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) [2021-06-12 22:34:11,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11936 transitions. [2021-06-12 22:34:11,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:11,201 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:11,201 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:11,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-12 22:34:11,201 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:11,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:11,202 INFO L82 PathProgramCache]: Analyzing trace with hash 345346378, now seen corresponding path program 40 times [2021-06-12 22:34:11,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:11,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009669137] [2021-06-12 22:34:11,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:11,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:11,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:11,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009669137] [2021-06-12 22:34:11,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009669137] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:11,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:11,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:11,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282136441] [2021-06-12 22:34:11,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:11,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:11,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:11,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:11,380 INFO L87 Difference]: Start difference. First operand 3560 states and 11936 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) [2021-06-12 22:34:12,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:12,879 INFO L93 Difference]: Finished difference Result 6237 states and 21116 transitions. [2021-06-12 22:34:12,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:34:12,880 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 [2021-06-12 22:34:12,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:12,890 INFO L225 Difference]: With dead ends: 6237 [2021-06-12 22:34:12,890 INFO L226 Difference]: Without dead ends: 6121 [2021-06-12 22:34:12,890 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 757.5ms TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:34:12,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6121 states. [2021-06-12 22:34:12,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6121 to 3538. [2021-06-12 22:34:12,961 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) [2021-06-12 22:34:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 11867 transitions. [2021-06-12 22:34:12,967 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 11867 transitions. Word has length 39 [2021-06-12 22:34:12,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:12,968 INFO L482 AbstractCegarLoop]: Abstraction has 3538 states and 11867 transitions. [2021-06-12 22:34:12,968 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) [2021-06-12 22:34:12,968 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 11867 transitions. [2021-06-12 22:34:12,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:12,972 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:12,972 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:12,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-12 22:34:12,972 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:12,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:12,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1082064394, now seen corresponding path program 41 times [2021-06-12 22:34:12,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:12,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324885620] [2021-06-12 22:34:12,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:13,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:13,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324885620] [2021-06-12 22:34:13,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324885620] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:13,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:13,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:13,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777928021] [2021-06-12 22:34:13,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:13,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:13,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:13,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:13,137 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) [2021-06-12 22:34:14,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:14,412 INFO L93 Difference]: Finished difference Result 3974 states and 13117 transitions. [2021-06-12 22:34:14,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-12 22:34:14,412 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 [2021-06-12 22:34:14,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:14,421 INFO L225 Difference]: With dead ends: 3974 [2021-06-12 22:34:14,421 INFO L226 Difference]: Without dead ends: 3868 [2021-06-12 22:34:14,421 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 813.7ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:34:14,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2021-06-12 22:34:14,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3554. [2021-06-12 22:34:14,463 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) [2021-06-12 22:34:14,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11919 transitions. [2021-06-12 22:34:14,469 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11919 transitions. Word has length 39 [2021-06-12 22:34:14,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:14,469 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11919 transitions. [2021-06-12 22:34:14,469 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) [2021-06-12 22:34:14,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11919 transitions. [2021-06-12 22:34:14,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:14,473 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:14,473 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:14,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-12 22:34:14,473 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:14,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:14,474 INFO L82 PathProgramCache]: Analyzing trace with hash -412826506, now seen corresponding path program 42 times [2021-06-12 22:34:14,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:14,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371196693] [2021-06-12 22:34:14,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:14,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:14,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:14,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371196693] [2021-06-12 22:34:14,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371196693] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:14,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:14,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:14,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263935518] [2021-06-12 22:34:14,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:14,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:14,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:14,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:14,663 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) [2021-06-12 22:34:15,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:15,870 INFO L93 Difference]: Finished difference Result 4043 states and 13251 transitions. [2021-06-12 22:34:15,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-12 22:34:15,870 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 [2021-06-12 22:34:15,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:15,877 INFO L225 Difference]: With dead ends: 4043 [2021-06-12 22:34:15,877 INFO L226 Difference]: Without dead ends: 3979 [2021-06-12 22:34:15,877 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 816.6ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:34:15,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2021-06-12 22:34:15,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3554. [2021-06-12 22:34:15,920 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) [2021-06-12 22:34:15,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11919 transitions. [2021-06-12 22:34:15,925 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11919 transitions. Word has length 39 [2021-06-12 22:34:15,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:15,926 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11919 transitions. [2021-06-12 22:34:15,926 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) [2021-06-12 22:34:15,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11919 transitions. [2021-06-12 22:34:15,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:15,930 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:15,930 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:15,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-12 22:34:15,930 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:15,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:15,930 INFO L82 PathProgramCache]: Analyzing trace with hash 505657064, now seen corresponding path program 43 times [2021-06-12 22:34:15,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:15,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344654625] [2021-06-12 22:34:15,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:16,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:16,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344654625] [2021-06-12 22:34:16,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344654625] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:16,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:16,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:16,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695472706] [2021-06-12 22:34:16,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:16,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:16,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:16,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:16,112 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) [2021-06-12 22:34:17,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:17,070 INFO L93 Difference]: Finished difference Result 3940 states and 12979 transitions. [2021-06-12 22:34:17,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-12 22:34:17,070 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 [2021-06-12 22:34:17,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:17,076 INFO L225 Difference]: With dead ends: 3940 [2021-06-12 22:34:17,076 INFO L226 Difference]: Without dead ends: 3897 [2021-06-12 22:34:17,077 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 613.3ms TimeCoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2021-06-12 22:34:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2021-06-12 22:34:17,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3560. [2021-06-12 22:34:17,120 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) [2021-06-12 22:34:17,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11932 transitions. [2021-06-12 22:34:17,125 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11932 transitions. Word has length 39 [2021-06-12 22:34:17,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:17,126 INFO L482 AbstractCegarLoop]: Abstraction has 3560 states and 11932 transitions. [2021-06-12 22:34:17,126 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) [2021-06-12 22:34:17,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11932 transitions. [2021-06-12 22:34:17,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:17,130 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:17,130 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:17,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-12 22:34:17,130 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:17,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:17,130 INFO L82 PathProgramCache]: Analyzing trace with hash 525805798, now seen corresponding path program 44 times [2021-06-12 22:34:17,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:17,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937882703] [2021-06-12 22:34:17,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:17,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:17,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:17,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937882703] [2021-06-12 22:34:17,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937882703] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:17,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:17,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:17,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234531541] [2021-06-12 22:34:17,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:17,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:17,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:17,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:17,308 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) [2021-06-12 22:34:18,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:18,381 INFO L93 Difference]: Finished difference Result 3897 states and 12878 transitions. [2021-06-12 22:34:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-12 22:34:18,382 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 [2021-06-12 22:34:18,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:18,388 INFO L225 Difference]: With dead ends: 3897 [2021-06-12 22:34:18,388 INFO L226 Difference]: Without dead ends: 3854 [2021-06-12 22:34:18,388 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 709.6ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-06-12 22:34:18,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2021-06-12 22:34:18,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3556. [2021-06-12 22:34:18,430 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) [2021-06-12 22:34:18,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11922 transitions. [2021-06-12 22:34:18,435 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11922 transitions. Word has length 39 [2021-06-12 22:34:18,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:18,435 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 11922 transitions. [2021-06-12 22:34:18,435 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) [2021-06-12 22:34:18,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11922 transitions. [2021-06-12 22:34:18,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:18,439 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:18,439 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:18,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-12 22:34:18,440 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:18,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:18,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1678309286, now seen corresponding path program 45 times [2021-06-12 22:34:18,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:18,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806855006] [2021-06-12 22:34:18,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:18,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:18,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806855006] [2021-06-12 22:34:18,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806855006] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:18,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:18,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:18,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726140542] [2021-06-12 22:34:18,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:18,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:18,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:18,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:18,610 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) [2021-06-12 22:34:19,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:19,509 INFO L93 Difference]: Finished difference Result 3918 states and 12938 transitions. [2021-06-12 22:34:19,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-12 22:34:19,510 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 [2021-06-12 22:34:19,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:19,516 INFO L225 Difference]: With dead ends: 3918 [2021-06-12 22:34:19,516 INFO L226 Difference]: Without dead ends: 3858 [2021-06-12 22:34:19,517 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 586.8ms TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2021-06-12 22:34:19,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2021-06-12 22:34:19,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3554. [2021-06-12 22:34:19,561 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) [2021-06-12 22:34:19,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11917 transitions. [2021-06-12 22:34:19,566 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11917 transitions. Word has length 39 [2021-06-12 22:34:19,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:19,567 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11917 transitions. [2021-06-12 22:34:19,567 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) [2021-06-12 22:34:19,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11917 transitions. [2021-06-12 22:34:19,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:19,571 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:19,571 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:19,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-12 22:34:19,571 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:19,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:19,571 INFO L82 PathProgramCache]: Analyzing trace with hash -401257256, now seen corresponding path program 46 times [2021-06-12 22:34:19,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:19,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157006547] [2021-06-12 22:34:19,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:19,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:19,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157006547] [2021-06-12 22:34:19,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157006547] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:19,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:19,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:34:19,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222413616] [2021-06-12 22:34:19,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:34:19,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:19,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:34:19,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:34:19,744 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) [2021-06-12 22:34:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:20,524 INFO L93 Difference]: Finished difference Result 3886 states and 12878 transitions. [2021-06-12 22:34:20,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-12 22:34:20,524 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 [2021-06-12 22:34:20,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:20,531 INFO L225 Difference]: With dead ends: 3886 [2021-06-12 22:34:20,531 INFO L226 Difference]: Without dead ends: 3810 [2021-06-12 22:34:20,531 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 502.8ms TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2021-06-12 22:34:20,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2021-06-12 22:34:20,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3562. [2021-06-12 22:34:20,574 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) [2021-06-12 22:34:20,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11933 transitions. [2021-06-12 22:34:20,580 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11933 transitions. Word has length 39 [2021-06-12 22:34:20,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:20,581 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11933 transitions. [2021-06-12 22:34:20,581 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) [2021-06-12 22:34:20,581 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11933 transitions. [2021-06-12 22:34:20,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:20,585 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:20,585 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:20,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-12 22:34:20,585 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:20,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:20,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1419310868, now seen corresponding path program 47 times [2021-06-12 22:34:20,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:20,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601451587] [2021-06-12 22:34:20,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:20,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:20,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601451587] [2021-06-12 22:34:20,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601451587] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:20,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:20,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:20,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782027919] [2021-06-12 22:34:20,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:20,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:20,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:20,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:20,750 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) [2021-06-12 22:34:21,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:21,616 INFO L93 Difference]: Finished difference Result 3868 states and 12824 transitions. [2021-06-12 22:34:21,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-12 22:34:21,616 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 [2021-06-12 22:34:21,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:21,622 INFO L225 Difference]: With dead ends: 3868 [2021-06-12 22:34:21,622 INFO L226 Difference]: Without dead ends: 3798 [2021-06-12 22:34:21,623 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 540.9ms TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-06-12 22:34:21,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3798 states. [2021-06-12 22:34:21,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3798 to 3550. [2021-06-12 22:34:21,667 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) [2021-06-12 22:34:21,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11905 transitions. [2021-06-12 22:34:21,673 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11905 transitions. Word has length 39 [2021-06-12 22:34:21,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:21,673 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11905 transitions. [2021-06-12 22:34:21,673 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) [2021-06-12 22:34:21,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11905 transitions. [2021-06-12 22:34:21,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:21,678 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:21,678 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:21,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-12 22:34:21,678 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:21,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:21,678 INFO L82 PathProgramCache]: Analyzing trace with hash -573127188, now seen corresponding path program 48 times [2021-06-12 22:34:21,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:21,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877531417] [2021-06-12 22:34:21,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:21,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:21,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:21,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877531417] [2021-06-12 22:34:21,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877531417] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:21,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:21,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:21,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435371870] [2021-06-12 22:34:21,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:21,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:21,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:21,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:21,844 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) [2021-06-12 22:34:23,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:23,537 INFO L93 Difference]: Finished difference Result 5576 states and 18929 transitions. [2021-06-12 22:34:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-12 22:34:23,539 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 [2021-06-12 22:34:23,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:23,548 INFO L225 Difference]: With dead ends: 5576 [2021-06-12 22:34:23,548 INFO L226 Difference]: Without dead ends: 5533 [2021-06-12 22:34:23,549 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 958.2ms TimeCoverageRelationStatistics Valid=302, Invalid=3004, Unknown=0, NotChecked=0, Total=3306 [2021-06-12 22:34:23,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2021-06-12 22:34:23,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 3576. [2021-06-12 22:34:23,600 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) [2021-06-12 22:34:23,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3576 states to 3576 states and 11988 transitions. [2021-06-12 22:34:23,606 INFO L78 Accepts]: Start accepts. Automaton has 3576 states and 11988 transitions. Word has length 39 [2021-06-12 22:34:23,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:23,606 INFO L482 AbstractCegarLoop]: Abstraction has 3576 states and 11988 transitions. [2021-06-12 22:34:23,606 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) [2021-06-12 22:34:23,606 INFO L276 IsEmpty]: Start isEmpty. Operand 3576 states and 11988 transitions. [2021-06-12 22:34:23,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:23,610 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:23,610 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:23,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-12 22:34:23,610 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:23,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:23,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1941241806, now seen corresponding path program 49 times [2021-06-12 22:34:23,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:23,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499661529] [2021-06-12 22:34:23,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:23,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:23,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:23,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499661529] [2021-06-12 22:34:23,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499661529] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:23,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:23,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:23,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590473090] [2021-06-12 22:34:23,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:23,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:23,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:23,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:23,780 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) [2021-06-12 22:34:25,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:25,650 INFO L93 Difference]: Finished difference Result 6437 states and 21859 transitions. [2021-06-12 22:34:25,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-12 22:34:25,650 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 [2021-06-12 22:34:25,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:25,661 INFO L225 Difference]: With dead ends: 6437 [2021-06-12 22:34:25,661 INFO L226 Difference]: Without dead ends: 6385 [2021-06-12 22:34:25,661 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 1065.0ms TimeCoverageRelationStatistics Valid=344, Invalid=3688, Unknown=0, NotChecked=0, Total=4032 [2021-06-12 22:34:25,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6385 states. [2021-06-12 22:34:25,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6385 to 3562. [2021-06-12 22:34:25,719 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) [2021-06-12 22:34:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11947 transitions. [2021-06-12 22:34:25,724 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11947 transitions. Word has length 39 [2021-06-12 22:34:25,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:25,724 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11947 transitions. [2021-06-12 22:34:25,724 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) [2021-06-12 22:34:25,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11947 transitions. [2021-06-12 22:34:25,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:25,728 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:25,728 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:25,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-12 22:34:25,729 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:25,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:25,729 INFO L82 PathProgramCache]: Analyzing trace with hash 345356382, now seen corresponding path program 50 times [2021-06-12 22:34:25,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:25,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406346029] [2021-06-12 22:34:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:25,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:25,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406346029] [2021-06-12 22:34:25,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406346029] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:25,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:25,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:25,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196717922] [2021-06-12 22:34:25,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:25,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:25,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:25,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:25,896 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) [2021-06-12 22:34:27,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:27,189 INFO L93 Difference]: Finished difference Result 5393 states and 18145 transitions. [2021-06-12 22:34:27,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-12 22:34:27,189 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 [2021-06-12 22:34:27,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:27,198 INFO L225 Difference]: With dead ends: 5393 [2021-06-12 22:34:27,198 INFO L226 Difference]: Without dead ends: 5338 [2021-06-12 22:34:27,199 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 698.2ms TimeCoverageRelationStatistics Valid=226, Invalid=2126, Unknown=0, NotChecked=0, Total=2352 [2021-06-12 22:34:27,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2021-06-12 22:34:27,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 3582. [2021-06-12 22:34:27,258 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) [2021-06-12 22:34:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 12013 transitions. [2021-06-12 22:34:27,264 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 12013 transitions. Word has length 39 [2021-06-12 22:34:27,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:27,265 INFO L482 AbstractCegarLoop]: Abstraction has 3582 states and 12013 transitions. [2021-06-12 22:34:27,265 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) [2021-06-12 22:34:27,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 12013 transitions. [2021-06-12 22:34:27,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:27,269 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:27,269 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:27,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-12 22:34:27,269 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:27,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:27,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1518008604, now seen corresponding path program 51 times [2021-06-12 22:34:27,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:27,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913052761] [2021-06-12 22:34:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:27,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:27,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:27,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913052761] [2021-06-12 22:34:27,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913052761] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:27,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:27,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:27,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130985250] [2021-06-12 22:34:27,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:27,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:27,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:27,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:27,442 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) [2021-06-12 22:34:29,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:29,044 INFO L93 Difference]: Finished difference Result 6254 states and 21079 transitions. [2021-06-12 22:34:29,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-12 22:34:29,045 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 [2021-06-12 22:34:29,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:29,055 INFO L225 Difference]: With dead ends: 6254 [2021-06-12 22:34:29,055 INFO L226 Difference]: Without dead ends: 6194 [2021-06-12 22:34:29,055 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 896.8ms TimeCoverageRelationStatistics Valid=288, Invalid=2904, Unknown=0, NotChecked=0, Total=3192 [2021-06-12 22:34:29,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2021-06-12 22:34:29,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 3580. [2021-06-12 22:34:29,111 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) [2021-06-12 22:34:29,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 12008 transitions. [2021-06-12 22:34:29,116 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 12008 transitions. Word has length 39 [2021-06-12 22:34:29,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:29,117 INFO L482 AbstractCegarLoop]: Abstraction has 3580 states and 12008 transitions. [2021-06-12 22:34:29,117 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) [2021-06-12 22:34:29,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 12008 transitions. [2021-06-12 22:34:29,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:29,121 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:29,121 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:29,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-12 22:34:29,121 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:29,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:29,121 INFO L82 PathProgramCache]: Analyzing trace with hash -359394998, now seen corresponding path program 52 times [2021-06-12 22:34:29,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:29,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219800240] [2021-06-12 22:34:29,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:29,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:29,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219800240] [2021-06-12 22:34:29,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219800240] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:29,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:29,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:29,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142242737] [2021-06-12 22:34:29,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:29,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:29,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:29,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:29,286 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) [2021-06-12 22:34:30,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:30,413 INFO L93 Difference]: Finished difference Result 5284 states and 17876 transitions. [2021-06-12 22:34:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-12 22:34:30,413 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 [2021-06-12 22:34:30,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:30,422 INFO L225 Difference]: With dead ends: 5284 [2021-06-12 22:34:30,423 INFO L226 Difference]: Without dead ends: 5193 [2021-06-12 22:34:30,423 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 572.6ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-06-12 22:34:30,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5193 states. [2021-06-12 22:34:30,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5193 to 3580. [2021-06-12 22:34:30,478 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) [2021-06-12 22:34:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 12002 transitions. [2021-06-12 22:34:30,484 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 12002 transitions. Word has length 39 [2021-06-12 22:34:30,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:30,484 INFO L482 AbstractCegarLoop]: Abstraction has 3580 states and 12002 transitions. [2021-06-12 22:34:30,484 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) [2021-06-12 22:34:30,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 12002 transitions. [2021-06-12 22:34:30,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:30,489 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:30,489 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:30,489 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-12 22:34:30,489 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:30,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:30,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1861877204, now seen corresponding path program 53 times [2021-06-12 22:34:30,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:30,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718829110] [2021-06-12 22:34:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:30,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:30,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:30,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718829110] [2021-06-12 22:34:30,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718829110] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:30,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:30,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:30,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242378355] [2021-06-12 22:34:30,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:30,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:30,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:30,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:30,662 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) [2021-06-12 22:34:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:32,088 INFO L93 Difference]: Finished difference Result 6116 states and 20752 transitions. [2021-06-12 22:34:32,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:34:32,090 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 [2021-06-12 22:34:32,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:32,101 INFO L225 Difference]: With dead ends: 6116 [2021-06-12 22:34:32,101 INFO L226 Difference]: Without dead ends: 6016 [2021-06-12 22:34:32,101 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 744.9ms TimeCoverageRelationStatistics Valid=238, Invalid=2312, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:34:32,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2021-06-12 22:34:32,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 3574. [2021-06-12 22:34:32,164 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) [2021-06-12 22:34:32,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11977 transitions. [2021-06-12 22:34:32,170 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11977 transitions. Word has length 39 [2021-06-12 22:34:32,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:32,170 INFO L482 AbstractCegarLoop]: Abstraction has 3574 states and 11977 transitions. [2021-06-12 22:34:32,170 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) [2021-06-12 22:34:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11977 transitions. [2021-06-12 22:34:32,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:32,175 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:32,175 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:32,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-12 22:34:32,175 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:32,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:32,175 INFO L82 PathProgramCache]: Analyzing trace with hash -2098502200, now seen corresponding path program 54 times [2021-06-12 22:34:32,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:32,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993355267] [2021-06-12 22:34:32,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:32,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:32,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993355267] [2021-06-12 22:34:32,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993355267] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:32,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:32,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:34:32,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289999694] [2021-06-12 22:34:32,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:34:32,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:32,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:34:32,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:34:32,342 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) [2021-06-12 22:34:33,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:33,088 INFO L93 Difference]: Finished difference Result 3841 states and 12759 transitions. [2021-06-12 22:34:33,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-12 22:34:33,088 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 [2021-06-12 22:34:33,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:33,094 INFO L225 Difference]: With dead ends: 3841 [2021-06-12 22:34:33,094 INFO L226 Difference]: Without dead ends: 3765 [2021-06-12 22:34:33,094 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 459.3ms TimeCoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2021-06-12 22:34:33,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2021-06-12 22:34:33,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3606. [2021-06-12 22:34:33,135 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) [2021-06-12 22:34:33,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12065 transitions. [2021-06-12 22:34:33,141 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12065 transitions. Word has length 39 [2021-06-12 22:34:33,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:33,141 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 12065 transitions. [2021-06-12 22:34:33,141 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) [2021-06-12 22:34:33,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12065 transitions. [2021-06-12 22:34:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:33,145 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:33,145 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:33,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-12 22:34:33,145 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:33,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:33,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1178411484, now seen corresponding path program 55 times [2021-06-12 22:34:33,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:33,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015265997] [2021-06-12 22:34:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:33,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:33,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:33,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015265997] [2021-06-12 22:34:33,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015265997] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:33,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:33,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:33,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094943766] [2021-06-12 22:34:33,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:33,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:33,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:33,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:33,326 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) [2021-06-12 22:34:34,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:34,142 INFO L93 Difference]: Finished difference Result 3823 states and 12705 transitions. [2021-06-12 22:34:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-12 22:34:34,143 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 [2021-06-12 22:34:34,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:34,149 INFO L225 Difference]: With dead ends: 3823 [2021-06-12 22:34:34,149 INFO L226 Difference]: Without dead ends: 3757 [2021-06-12 22:34:34,149 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 519.1ms TimeCoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2021-06-12 22:34:34,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2021-06-12 22:34:34,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3598. [2021-06-12 22:34:34,190 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) [2021-06-12 22:34:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12041 transitions. [2021-06-12 22:34:34,196 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12041 transitions. Word has length 39 [2021-06-12 22:34:34,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:34,196 INFO L482 AbstractCegarLoop]: Abstraction has 3598 states and 12041 transitions. [2021-06-12 22:34:34,196 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) [2021-06-12 22:34:34,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12041 transitions. [2021-06-12 22:34:34,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:34,200 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:34,200 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:34,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-12 22:34:34,200 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:34,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:34,200 INFO L82 PathProgramCache]: Analyzing trace with hash 896145830, now seen corresponding path program 56 times [2021-06-12 22:34:34,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:34,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837706525] [2021-06-12 22:34:34,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:34,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:34,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837706525] [2021-06-12 22:34:34,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837706525] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:34,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:34,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:34:34,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731396685] [2021-06-12 22:34:34,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:34:34,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:34,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:34:34,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:34:34,362 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) [2021-06-12 22:34:35,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:35,208 INFO L93 Difference]: Finished difference Result 3832 states and 12726 transitions. [2021-06-12 22:34:35,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-12 22:34:35,209 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 [2021-06-12 22:34:35,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:35,215 INFO L225 Difference]: With dead ends: 3832 [2021-06-12 22:34:35,215 INFO L226 Difference]: Without dead ends: 3670 [2021-06-12 22:34:35,216 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 514.6ms TimeCoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2021-06-12 22:34:35,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2021-06-12 22:34:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3530. [2021-06-12 22:34:35,258 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) [2021-06-12 22:34:35,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 11853 transitions. [2021-06-12 22:34:35,264 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 11853 transitions. Word has length 39 [2021-06-12 22:34:35,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:35,264 INFO L482 AbstractCegarLoop]: Abstraction has 3530 states and 11853 transitions. [2021-06-12 22:34:35,264 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) [2021-06-12 22:34:35,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 11853 transitions. [2021-06-12 22:34:35,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:35,268 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:35,268 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:35,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-12 22:34:35,268 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:35,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:35,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1277537094, now seen corresponding path program 57 times [2021-06-12 22:34:35,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:35,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101816145] [2021-06-12 22:34:35,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:35,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:35,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101816145] [2021-06-12 22:34:35,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101816145] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:35,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:35,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:34:35,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397457428] [2021-06-12 22:34:35,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:34:35,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:35,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:34:35,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:34:35,463 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) [2021-06-12 22:34:36,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:36,617 INFO L93 Difference]: Finished difference Result 3963 states and 13168 transitions. [2021-06-12 22:34:36,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-12 22:34:36,617 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:34:36,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:36,623 INFO L225 Difference]: With dead ends: 3963 [2021-06-12 22:34:36,623 INFO L226 Difference]: Without dead ends: 3896 [2021-06-12 22:34:36,624 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 773.2ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:34:36,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-06-12 22:34:36,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3566. [2021-06-12 22:34:36,669 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) [2021-06-12 22:34:36,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 11959 transitions. [2021-06-12 22:34:36,675 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 11959 transitions. Word has length 39 [2021-06-12 22:34:36,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:36,675 INFO L482 AbstractCegarLoop]: Abstraction has 3566 states and 11959 transitions. [2021-06-12 22:34:36,675 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) [2021-06-12 22:34:36,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 11959 transitions. [2021-06-12 22:34:36,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:36,680 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:36,680 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:36,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-12 22:34:36,680 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:36,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:36,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1135016120, now seen corresponding path program 58 times [2021-06-12 22:34:36,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:36,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727499444] [2021-06-12 22:34:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:36,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:36,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:36,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727499444] [2021-06-12 22:34:36,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727499444] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:36,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:36,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:34:36,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850053064] [2021-06-12 22:34:36,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:34:36,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:36,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:34:36,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:34:36,909 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) [2021-06-12 22:34:38,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:38,297 INFO L93 Difference]: Finished difference Result 4048 states and 13357 transitions. [2021-06-12 22:34:38,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-12 22:34:38,297 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 [2021-06-12 22:34:38,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:38,304 INFO L225 Difference]: With dead ends: 4048 [2021-06-12 22:34:38,304 INFO L226 Difference]: Without dead ends: 4005 [2021-06-12 22:34:38,304 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 930.5ms TimeCoverageRelationStatistics Valid=283, Invalid=2797, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:34:38,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4005 states. [2021-06-12 22:34:38,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4005 to 3572. [2021-06-12 22:34:38,348 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) [2021-06-12 22:34:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3572 states to 3572 states and 11972 transitions. [2021-06-12 22:34:38,353 INFO L78 Accepts]: Start accepts. Automaton has 3572 states and 11972 transitions. Word has length 39 [2021-06-12 22:34:38,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:38,354 INFO L482 AbstractCegarLoop]: Abstraction has 3572 states and 11972 transitions. [2021-06-12 22:34:38,354 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) [2021-06-12 22:34:38,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3572 states and 11972 transitions. [2021-06-12 22:34:38,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:38,358 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:38,358 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:38,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-12 22:34:38,358 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:38,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:38,358 INFO L82 PathProgramCache]: Analyzing trace with hash -645582182, now seen corresponding path program 59 times [2021-06-12 22:34:38,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:38,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129337826] [2021-06-12 22:34:38,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:38,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:38,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:38,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129337826] [2021-06-12 22:34:38,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129337826] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:38,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:38,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:34:38,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236844709] [2021-06-12 22:34:38,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:34:38,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:38,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:34:38,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:34:38,537 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) [2021-06-12 22:34:39,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:39,881 INFO L93 Difference]: Finished difference Result 4003 states and 13253 transitions. [2021-06-12 22:34:39,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:34:39,881 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 [2021-06-12 22:34:39,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:39,887 INFO L225 Difference]: With dead ends: 4003 [2021-06-12 22:34:39,887 INFO L226 Difference]: Without dead ends: 3939 [2021-06-12 22:34:39,887 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 879.1ms TimeCoverageRelationStatistics Valid=274, Invalid=2696, Unknown=0, NotChecked=0, Total=2970 [2021-06-12 22:34:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2021-06-12 22:34:39,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3554. [2021-06-12 22:34:39,928 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) [2021-06-12 22:34:39,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11929 transitions. [2021-06-12 22:34:39,933 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11929 transitions. Word has length 39 [2021-06-12 22:34:39,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:39,933 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11929 transitions. [2021-06-12 22:34:39,933 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:34:39,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11929 transitions. [2021-06-12 22:34:39,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:39,937 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:39,937 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:39,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-12 22:34:39,938 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:39,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:39,938 INFO L82 PathProgramCache]: Analyzing trace with hash 916877996, now seen corresponding path program 60 times [2021-06-12 22:34:39,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:39,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890030565] [2021-06-12 22:34:39,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:40,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:40,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890030565] [2021-06-12 22:34:40,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890030565] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:40,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:40,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:34:40,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440915482] [2021-06-12 22:34:40,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:34:40,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:40,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:34:40,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:34:40,138 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) [2021-06-12 22:34:41,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:41,195 INFO L93 Difference]: Finished difference Result 3963 states and 13162 transitions. [2021-06-12 22:34:41,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-12 22:34:41,196 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 [2021-06-12 22:34:41,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:41,202 INFO L225 Difference]: With dead ends: 3963 [2021-06-12 22:34:41,203 INFO L226 Difference]: Without dead ends: 3896 [2021-06-12 22:34:41,203 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 683.4ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:34:41,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-06-12 22:34:41,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3562. [2021-06-12 22:34:41,248 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) [2021-06-12 22:34:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11945 transitions. [2021-06-12 22:34:41,253 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11945 transitions. Word has length 39 [2021-06-12 22:34:41,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:41,253 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11945 transitions. [2021-06-12 22:34:41,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:34:41,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11945 transitions. [2021-06-12 22:34:41,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:41,257 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:41,258 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:41,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-12 22:34:41,258 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:41,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:41,258 INFO L82 PathProgramCache]: Analyzing trace with hash 744734778, now seen corresponding path program 61 times [2021-06-12 22:34:41,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:41,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31990482] [2021-06-12 22:34:41,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:41,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:41,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31990482] [2021-06-12 22:34:41,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31990482] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:41,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:41,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:34:41,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539573341] [2021-06-12 22:34:41,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:34:41,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:41,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:34:41,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:34:41,469 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) [2021-06-12 22:34:42,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:42,556 INFO L93 Difference]: Finished difference Result 3951 states and 13122 transitions. [2021-06-12 22:34:42,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:34:42,556 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 [2021-06-12 22:34:42,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:42,562 INFO L225 Difference]: With dead ends: 3951 [2021-06-12 22:34:42,563 INFO L226 Difference]: Without dead ends: 3888 [2021-06-12 22:34:42,563 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 693.6ms TimeCoverageRelationStatistics Valid=227, Invalid=2125, Unknown=0, NotChecked=0, Total=2352 [2021-06-12 22:34:42,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-06-12 22:34:42,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3554. [2021-06-12 22:34:42,608 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) [2021-06-12 22:34:42,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11925 transitions. [2021-06-12 22:34:42,615 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11925 transitions. Word has length 39 [2021-06-12 22:34:42,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:42,615 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11925 transitions. [2021-06-12 22:34:42,615 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:34:42,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11925 transitions. [2021-06-12 22:34:42,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:42,619 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:42,619 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:42,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-12 22:34:42,619 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:42,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:42,619 INFO L82 PathProgramCache]: Analyzing trace with hash -291421222, now seen corresponding path program 62 times [2021-06-12 22:34:42,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:42,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282688317] [2021-06-12 22:34:42,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:42,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:42,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:42,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282688317] [2021-06-12 22:34:42,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282688317] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:42,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:42,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:34:42,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258249168] [2021-06-12 22:34:42,821 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:34:42,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:42,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:34:42,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:34:42,821 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) [2021-06-12 22:34:44,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:44,232 INFO L93 Difference]: Finished difference Result 4114 states and 13511 transitions. [2021-06-12 22:34:44,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-12 22:34:44,232 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 [2021-06-12 22:34:44,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:44,238 INFO L225 Difference]: With dead ends: 4114 [2021-06-12 22:34:44,238 INFO L226 Difference]: Without dead ends: 4071 [2021-06-12 22:34:44,239 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 947.0ms TimeCoverageRelationStatistics Valid=300, Invalid=3006, Unknown=0, NotChecked=0, Total=3306 [2021-06-12 22:34:44,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2021-06-12 22:34:44,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 3562. [2021-06-12 22:34:44,281 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) [2021-06-12 22:34:44,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11945 transitions. [2021-06-12 22:34:44,287 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11945 transitions. Word has length 39 [2021-06-12 22:34:44,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:44,287 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11945 transitions. [2021-06-12 22:34:44,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:34:44,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11945 transitions. [2021-06-12 22:34:44,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:44,291 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:44,291 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:44,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-12 22:34:44,291 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:44,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:44,291 INFO L82 PathProgramCache]: Analyzing trace with hash -2072019524, now seen corresponding path program 63 times [2021-06-12 22:34:44,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:44,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839401947] [2021-06-12 22:34:44,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:44,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:44,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:44,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839401947] [2021-06-12 22:34:44,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839401947] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:44,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:44,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:34:44,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725477708] [2021-06-12 22:34:44,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:34:44,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:44,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:34:44,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:34:44,490 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) [2021-06-12 22:34:45,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:45,892 INFO L93 Difference]: Finished difference Result 4102 states and 13473 transitions. [2021-06-12 22:34:45,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-12 22:34:45,892 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:34:45,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:45,898 INFO L225 Difference]: With dead ends: 4102 [2021-06-12 22:34:45,898 INFO L226 Difference]: Without dead ends: 4050 [2021-06-12 22:34:45,899 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 936.2ms TimeCoverageRelationStatistics Valid=292, Invalid=2900, Unknown=0, NotChecked=0, Total=3192 [2021-06-12 22:34:45,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4050 states. [2021-06-12 22:34:45,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4050 to 3554. [2021-06-12 22:34:45,941 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) [2021-06-12 22:34:45,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11925 transitions. [2021-06-12 22:34:45,946 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11925 transitions. Word has length 39 [2021-06-12 22:34:45,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:45,946 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11925 transitions. [2021-06-12 22:34:45,946 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) [2021-06-12 22:34:45,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11925 transitions. [2021-06-12 22:34:45,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:45,950 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:45,950 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:45,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-12 22:34:45,951 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:45,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:45,951 INFO L82 PathProgramCache]: Analyzing trace with hash 627062348, now seen corresponding path program 64 times [2021-06-12 22:34:45,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:45,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022477011] [2021-06-12 22:34:45,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:46,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:46,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:46,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022477011] [2021-06-12 22:34:46,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022477011] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:46,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:46,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:34:46,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630912769] [2021-06-12 22:34:46,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:34:46,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:46,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:34:46,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:34:46,133 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) [2021-06-12 22:34:47,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:47,265 INFO L93 Difference]: Finished difference Result 4079 states and 13396 transitions. [2021-06-12 22:34:47,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:34:47,265 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:34:47,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:47,272 INFO L225 Difference]: With dead ends: 4079 [2021-06-12 22:34:47,272 INFO L226 Difference]: Without dead ends: 4024 [2021-06-12 22:34:47,272 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 725.2ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:34:47,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-06-12 22:34:47,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3556. [2021-06-12 22:34:47,318 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) [2021-06-12 22:34:47,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11928 transitions. [2021-06-12 22:34:47,325 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11928 transitions. Word has length 39 [2021-06-12 22:34:47,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:47,325 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 11928 transitions. [2021-06-12 22:34:47,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:34:47,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11928 transitions. [2021-06-12 22:34:47,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:47,329 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:47,329 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:47,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-12 22:34:47,329 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:47,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:47,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1799714570, now seen corresponding path program 65 times [2021-06-12 22:34:47,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:47,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115184428] [2021-06-12 22:34:47,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:47,528 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:47,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115184428] [2021-06-12 22:34:47,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115184428] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:47,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:47,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:34:47,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814168677] [2021-06-12 22:34:47,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:34:47,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:47,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:34:47,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:34:47,529 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) [2021-06-12 22:34:48,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:48,607 INFO L93 Difference]: Finished difference Result 4014 states and 13244 transitions. [2021-06-12 22:34:48,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-12 22:34:48,607 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:34:48,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:48,613 INFO L225 Difference]: With dead ends: 4014 [2021-06-12 22:34:48,613 INFO L226 Difference]: Without dead ends: 3968 [2021-06-12 22:34:48,614 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 700.4ms TimeCoverageRelationStatistics Valid=219, Invalid=2037, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:34:48,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2021-06-12 22:34:48,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3560. [2021-06-12 22:34:48,659 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) [2021-06-12 22:34:48,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11936 transitions. [2021-06-12 22:34:48,665 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11936 transitions. Word has length 39 [2021-06-12 22:34:48,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:48,665 INFO L482 AbstractCegarLoop]: Abstraction has 3560 states and 11936 transitions. [2021-06-12 22:34:48,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:34:48,665 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11936 transitions. [2021-06-12 22:34:48,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:48,669 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:48,670 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:48,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-12 22:34:48,670 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:48,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:48,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1552248408, now seen corresponding path program 66 times [2021-06-12 22:34:48,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:48,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649659201] [2021-06-12 22:34:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:48,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:48,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649659201] [2021-06-12 22:34:48,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649659201] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:48,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:48,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:34:48,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092041724] [2021-06-12 22:34:48,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:34:48,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:48,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:34:48,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:34:48,858 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) [2021-06-12 22:34:50,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:50,073 INFO L93 Difference]: Finished difference Result 3980 states and 13174 transitions. [2021-06-12 22:34:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:34:50,074 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 [2021-06-12 22:34:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:50,080 INFO L225 Difference]: With dead ends: 3980 [2021-06-12 22:34:50,080 INFO L226 Difference]: Without dead ends: 3931 [2021-06-12 22:34:50,081 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 825.4ms TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:34:50,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-06-12 22:34:50,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3550. [2021-06-12 22:34:50,122 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) [2021-06-12 22:34:50,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11915 transitions. [2021-06-12 22:34:50,127 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11915 transitions. Word has length 39 [2021-06-12 22:34:50,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:50,127 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11915 transitions. [2021-06-12 22:34:50,127 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:34:50,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11915 transitions. [2021-06-12 22:34:50,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:50,131 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:50,131 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:50,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-12 22:34:50,131 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:50,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:50,131 INFO L82 PathProgramCache]: Analyzing trace with hash -2039332712, now seen corresponding path program 67 times [2021-06-12 22:34:50,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:50,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991931076] [2021-06-12 22:34:50,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:50,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:50,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991931076] [2021-06-12 22:34:50,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991931076] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:50,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:50,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:34:50,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133575761] [2021-06-12 22:34:50,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:34:50,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:50,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:34:50,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:34:50,317 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) [2021-06-12 22:34:51,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:51,344 INFO L93 Difference]: Finished difference Result 4021 states and 13349 transitions. [2021-06-12 22:34:51,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-12 22:34:51,344 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:34:51,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:51,351 INFO L225 Difference]: With dead ends: 4021 [2021-06-12 22:34:51,351 INFO L226 Difference]: Without dead ends: 3954 [2021-06-12 22:34:51,351 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 605.3ms TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2021-06-12 22:34:51,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2021-06-12 22:34:51,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3590. [2021-06-12 22:34:51,412 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) [2021-06-12 22:34:51,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 12023 transitions. [2021-06-12 22:34:51,418 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 12023 transitions. Word has length 39 [2021-06-12 22:34:51,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:51,418 INFO L482 AbstractCegarLoop]: Abstraction has 3590 states and 12023 transitions. [2021-06-12 22:34:51,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:34:51,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 12023 transitions. [2021-06-12 22:34:51,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:51,428 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:51,429 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:51,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-12 22:34:51,429 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:51,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:51,429 INFO L82 PathProgramCache]: Analyzing trace with hash 2083491366, now seen corresponding path program 68 times [2021-06-12 22:34:51,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:51,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420142042] [2021-06-12 22:34:51,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:51,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:51,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420142042] [2021-06-12 22:34:51,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420142042] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:51,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:51,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:34:51,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761584769] [2021-06-12 22:34:51,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:34:51,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:51,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:34:51,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:34:51,615 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) [2021-06-12 22:34:52,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:52,652 INFO L93 Difference]: Finished difference Result 4009 states and 13309 transitions. [2021-06-12 22:34:52,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-12 22:34:52,653 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 [2021-06-12 22:34:52,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:52,660 INFO L225 Difference]: With dead ends: 4009 [2021-06-12 22:34:52,660 INFO L226 Difference]: Without dead ends: 3946 [2021-06-12 22:34:52,661 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 603.3ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-06-12 22:34:52,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2021-06-12 22:34:52,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3582. [2021-06-12 22:34:52,713 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) [2021-06-12 22:34:52,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 11999 transitions. [2021-06-12 22:34:52,720 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 11999 transitions. Word has length 39 [2021-06-12 22:34:52,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:52,720 INFO L482 AbstractCegarLoop]: Abstraction has 3582 states and 11999 transitions. [2021-06-12 22:34:52,720 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:34:52,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 11999 transitions. [2021-06-12 22:34:52,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:52,725 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:52,725 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:52,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-12 22:34:52,725 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:52,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:52,725 INFO L82 PathProgramCache]: Analyzing trace with hash 280657210, now seen corresponding path program 69 times [2021-06-12 22:34:52,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:52,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991168200] [2021-06-12 22:34:52,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:52,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:52,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991168200] [2021-06-12 22:34:52,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991168200] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:52,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:52,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:34:52,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613839763] [2021-06-12 22:34:52,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:34:52,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:52,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:34:52,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:34:52,905 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) [2021-06-12 22:34:53,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:53,945 INFO L93 Difference]: Finished difference Result 4021 states and 13337 transitions. [2021-06-12 22:34:53,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-12 22:34:53,945 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 [2021-06-12 22:34:53,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:53,951 INFO L225 Difference]: With dead ends: 4021 [2021-06-12 22:34:53,951 INFO L226 Difference]: Without dead ends: 3898 [2021-06-12 22:34:53,951 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 588.5ms TimeCoverageRelationStatistics Valid=182, Invalid=1710, Unknown=0, NotChecked=0, Total=1892 [2021-06-12 22:34:53,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2021-06-12 22:34:53,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 3550. [2021-06-12 22:34:53,994 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) [2021-06-12 22:34:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11899 transitions. [2021-06-12 22:34:54,000 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11899 transitions. Word has length 39 [2021-06-12 22:34:54,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:54,000 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11899 transitions. [2021-06-12 22:34:54,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:34:54,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11899 transitions. [2021-06-12 22:34:54,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:54,004 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:54,004 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:54,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-12 22:34:54,004 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:54,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:54,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1712217464, now seen corresponding path program 70 times [2021-06-12 22:34:54,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:54,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374504094] [2021-06-12 22:34:54,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:54,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:54,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374504094] [2021-06-12 22:34:54,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374504094] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:54,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:54,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:34:54,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985176672] [2021-06-12 22:34:54,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:34:54,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:54,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:34:54,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:34:54,201 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) [2021-06-12 22:34:56,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:56,052 INFO L93 Difference]: Finished difference Result 5827 states and 19628 transitions. [2021-06-12 22:34:56,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-12 22:34:56,053 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:34:56,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:56,062 INFO L225 Difference]: With dead ends: 5827 [2021-06-12 22:34:56,062 INFO L226 Difference]: Without dead ends: 5741 [2021-06-12 22:34:56,063 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 1080.3ms TimeCoverageRelationStatistics Valid=346, Invalid=3814, Unknown=0, NotChecked=0, Total=4160 [2021-06-12 22:34:56,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5741 states. [2021-06-12 22:34:56,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5741 to 3628. [2021-06-12 22:34:56,116 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) [2021-06-12 22:34:56,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 12148 transitions. [2021-06-12 22:34:56,121 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 12148 transitions. Word has length 39 [2021-06-12 22:34:56,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:56,121 INFO L482 AbstractCegarLoop]: Abstraction has 3628 states and 12148 transitions. [2021-06-12 22:34:56,121 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:34:56,122 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 12148 transitions. [2021-06-12 22:34:56,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:56,125 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:56,125 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:56,126 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-12 22:34:56,126 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:56,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:56,126 INFO L82 PathProgramCache]: Analyzing trace with hash -68380838, now seen corresponding path program 71 times [2021-06-12 22:34:56,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:56,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459114451] [2021-06-12 22:34:56,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:56,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:56,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:56,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459114451] [2021-06-12 22:34:56,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459114451] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:56,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:56,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:34:56,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617805028] [2021-06-12 22:34:56,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:34:56,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:56,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:34:56,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:34:56,335 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) [2021-06-12 22:34:58,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:34:58,509 INFO L93 Difference]: Finished difference Result 6643 states and 22454 transitions. [2021-06-12 22:34:58,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-12 22:34:58,509 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 [2021-06-12 22:34:58,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:34:58,520 INFO L225 Difference]: With dead ends: 6643 [2021-06-12 22:34:58,520 INFO L226 Difference]: Without dead ends: 6539 [2021-06-12 22:34:58,520 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 1216.8ms TimeCoverageRelationStatistics Valid=389, Invalid=4581, Unknown=0, NotChecked=0, Total=4970 [2021-06-12 22:34:58,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2021-06-12 22:34:58,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 3598. [2021-06-12 22:34:58,576 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) [2021-06-12 22:34:58,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12047 transitions. [2021-06-12 22:34:58,582 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12047 transitions. Word has length 39 [2021-06-12 22:34:58,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:34:58,583 INFO L482 AbstractCegarLoop]: Abstraction has 3598 states and 12047 transitions. [2021-06-12 22:34:58,583 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) [2021-06-12 22:34:58,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12047 transitions. [2021-06-12 22:34:58,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:34:58,587 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:34:58,587 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:34:58,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-12 22:34:58,587 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:34:58,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:34:58,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1664266262, now seen corresponding path program 72 times [2021-06-12 22:34:58,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:34:58,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359286185] [2021-06-12 22:34:58,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:34:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:34:58,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:34:58,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:34:58,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359286185] [2021-06-12 22:34:58,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359286185] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:34:58,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:34:58,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:34:58,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306115309] [2021-06-12 22:34:58,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:34:58,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:34:58,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:34:58,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:34:58,766 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) [2021-06-12 22:35:00,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:00,299 INFO L93 Difference]: Finished difference Result 5563 states and 18662 transitions. [2021-06-12 22:35:00,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-12 22:35:00,300 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 [2021-06-12 22:35:00,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:00,309 INFO L225 Difference]: With dead ends: 5563 [2021-06-12 22:35:00,309 INFO L226 Difference]: Without dead ends: 5508 [2021-06-12 22:35:00,310 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 842.2ms TimeCoverageRelationStatistics Valid=267, Invalid=2703, Unknown=0, NotChecked=0, Total=2970 [2021-06-12 22:35:00,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-06-12 22:35:00,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 3626. [2021-06-12 22:35:00,364 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) [2021-06-12 22:35:00,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12137 transitions. [2021-06-12 22:35:00,370 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12137 transitions. Word has length 39 [2021-06-12 22:35:00,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:00,370 INFO L482 AbstractCegarLoop]: Abstraction has 3626 states and 12137 transitions. [2021-06-12 22:35:00,371 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) [2021-06-12 22:35:00,371 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12137 transitions. [2021-06-12 22:35:00,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:00,375 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:00,375 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:00,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-12 22:35:00,375 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:00,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:00,375 INFO L82 PathProgramCache]: Analyzing trace with hash -491614040, now seen corresponding path program 73 times [2021-06-12 22:35:00,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:00,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426747498] [2021-06-12 22:35:00,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:00,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:00,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426747498] [2021-06-12 22:35:00,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426747498] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:00,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:00,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:00,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728113271] [2021-06-12 22:35:00,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:00,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:00,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:00,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:00,571 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) [2021-06-12 22:35:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:02,414 INFO L93 Difference]: Finished difference Result 6424 states and 21596 transitions. [2021-06-12 22:35:02,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-12 22:35:02,414 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:02,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:02,426 INFO L225 Difference]: With dead ends: 6424 [2021-06-12 22:35:02,427 INFO L226 Difference]: Without dead ends: 6364 [2021-06-12 22:35:02,427 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 991.0ms TimeCoverageRelationStatistics Valid=298, Invalid=3242, Unknown=0, NotChecked=0, Total=3540 [2021-06-12 22:35:02,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2021-06-12 22:35:02,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 3624. [2021-06-12 22:35:02,485 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) [2021-06-12 22:35:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 12132 transitions. [2021-06-12 22:35:02,490 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 12132 transitions. Word has length 39 [2021-06-12 22:35:02,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:02,491 INFO L482 AbstractCegarLoop]: Abstraction has 3624 states and 12132 transitions. [2021-06-12 22:35:02,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:02,491 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 12132 transitions. [2021-06-12 22:35:02,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:02,495 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:02,495 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:02,495 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-12 22:35:02,495 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:02,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:02,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1925949654, now seen corresponding path program 74 times [2021-06-12 22:35:02,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:02,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33552442] [2021-06-12 22:35:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:02,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:02,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33552442] [2021-06-12 22:35:02,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33552442] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:02,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:02,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:02,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146319980] [2021-06-12 22:35:02,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:02,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:02,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:02,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:02,681 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) [2021-06-12 22:35:04,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:04,144 INFO L93 Difference]: Finished difference Result 5514 states and 18559 transitions. [2021-06-12 22:35:04,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-12 22:35:04,144 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:04,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:04,153 INFO L225 Difference]: With dead ends: 5514 [2021-06-12 22:35:04,153 INFO L226 Difference]: Without dead ends: 5423 [2021-06-12 22:35:04,154 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 756.9ms TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:35:04,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2021-06-12 22:35:04,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 3624. [2021-06-12 22:35:04,209 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) [2021-06-12 22:35:04,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 12126 transitions. [2021-06-12 22:35:04,215 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 12126 transitions. Word has length 39 [2021-06-12 22:35:04,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:04,215 INFO L482 AbstractCegarLoop]: Abstraction has 3624 states and 12126 transitions. [2021-06-12 22:35:04,215 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:04,215 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 12126 transitions. [2021-06-12 22:35:04,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:04,220 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:04,220 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:04,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-12 22:35:04,220 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:04,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:04,220 INFO L82 PathProgramCache]: Analyzing trace with hash 423467448, now seen corresponding path program 75 times [2021-06-12 22:35:04,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:04,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127094259] [2021-06-12 22:35:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:04,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:04,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127094259] [2021-06-12 22:35:04,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127094259] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:04,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:04,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:04,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507914102] [2021-06-12 22:35:04,424 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:04,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:04,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:04,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:04,424 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) [2021-06-12 22:35:06,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:06,091 INFO L93 Difference]: Finished difference Result 6327 states and 21361 transitions. [2021-06-12 22:35:06,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-12 22:35:06,092 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:06,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:06,105 INFO L225 Difference]: With dead ends: 6327 [2021-06-12 22:35:06,105 INFO L226 Difference]: Without dead ends: 6211 [2021-06-12 22:35:06,106 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 855.3ms TimeCoverageRelationStatistics Valid=257, Invalid=2713, Unknown=0, NotChecked=0, Total=2970 [2021-06-12 22:35:06,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6211 states. [2021-06-12 22:35:06,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6211 to 3586. [2021-06-12 22:35:06,174 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) [2021-06-12 22:35:06,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 12021 transitions. [2021-06-12 22:35:06,181 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 12021 transitions. Word has length 39 [2021-06-12 22:35:06,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:06,181 INFO L482 AbstractCegarLoop]: Abstraction has 3586 states and 12021 transitions. [2021-06-12 22:35:06,181 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) [2021-06-12 22:35:06,181 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 12021 transitions. [2021-06-12 22:35:06,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:06,186 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:06,186 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:06,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-12 22:35:06,186 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:06,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:06,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1052700712, now seen corresponding path program 76 times [2021-06-12 22:35:06,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:06,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289097796] [2021-06-12 22:35:06,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:06,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:06,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:06,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289097796] [2021-06-12 22:35:06,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289097796] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:06,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:06,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:06,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874539473] [2021-06-12 22:35:06,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:06,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:06,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:06,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:06,398 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) [2021-06-12 22:35:07,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:07,296 INFO L93 Difference]: Finished difference Result 3853 states and 12803 transitions. [2021-06-12 22:35:07,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-12 22:35:07,296 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:07,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:07,303 INFO L225 Difference]: With dead ends: 3853 [2021-06-12 22:35:07,303 INFO L226 Difference]: Without dead ends: 3786 [2021-06-12 22:35:07,303 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 559.1ms TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-06-12 22:35:07,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-06-12 22:35:07,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3634. [2021-06-12 22:35:07,353 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) [2021-06-12 22:35:07,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 12149 transitions. [2021-06-12 22:35:07,361 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 12149 transitions. Word has length 39 [2021-06-12 22:35:07,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:07,361 INFO L482 AbstractCegarLoop]: Abstraction has 3634 states and 12149 transitions. [2021-06-12 22:35:07,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:07,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 12149 transitions. [2021-06-12 22:35:07,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:07,366 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:07,366 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:07,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-12 22:35:07,366 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:07,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:07,366 INFO L82 PathProgramCache]: Analyzing trace with hash 880557494, now seen corresponding path program 77 times [2021-06-12 22:35:07,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:07,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16253785] [2021-06-12 22:35:07,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:07,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:07,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16253785] [2021-06-12 22:35:07,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16253785] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:07,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:07,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:07,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280187821] [2021-06-12 22:35:07,557 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:07,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:07,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:07,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:07,558 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) [2021-06-12 22:35:08,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:08,431 INFO L93 Difference]: Finished difference Result 3841 states and 12763 transitions. [2021-06-12 22:35:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-12 22:35:08,432 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 [2021-06-12 22:35:08,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:08,438 INFO L225 Difference]: With dead ends: 3841 [2021-06-12 22:35:08,438 INFO L226 Difference]: Without dead ends: 3778 [2021-06-12 22:35:08,438 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 559.8ms TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-06-12 22:35:08,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2021-06-12 22:35:08,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3626. [2021-06-12 22:35:08,502 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) [2021-06-12 22:35:08,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12125 transitions. [2021-06-12 22:35:08,508 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12125 transitions. Word has length 39 [2021-06-12 22:35:08,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:08,508 INFO L482 AbstractCegarLoop]: Abstraction has 3626 states and 12125 transitions. [2021-06-12 22:35:08,508 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:08,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12125 transitions. [2021-06-12 22:35:08,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:08,512 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:08,512 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:08,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-12 22:35:08,512 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:08,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:08,513 INFO L82 PathProgramCache]: Analyzing trace with hash -922276662, now seen corresponding path program 78 times [2021-06-12 22:35:08,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:08,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033573406] [2021-06-12 22:35:08,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:08,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:08,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:08,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033573406] [2021-06-12 22:35:08,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033573406] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:08,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:08,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:08,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646351605] [2021-06-12 22:35:08,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:08,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:08,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:08,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:08,693 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) [2021-06-12 22:35:09,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:09,568 INFO L93 Difference]: Finished difference Result 3841 states and 12755 transitions. [2021-06-12 22:35:09,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-12 22:35:09,568 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 [2021-06-12 22:35:09,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:09,575 INFO L225 Difference]: With dead ends: 3841 [2021-06-12 22:35:09,575 INFO L226 Difference]: Without dead ends: 3698 [2021-06-12 22:35:09,575 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 546.7ms TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-06-12 22:35:09,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-06-12 22:35:09,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3574. [2021-06-12 22:35:09,620 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) [2021-06-12 22:35:09,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11989 transitions. [2021-06-12 22:35:09,627 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11989 transitions. Word has length 39 [2021-06-12 22:35:09,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:09,627 INFO L482 AbstractCegarLoop]: Abstraction has 3574 states and 11989 transitions. [2021-06-12 22:35:09,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:09,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11989 transitions. [2021-06-12 22:35:09,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:09,631 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:09,631 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:09,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-12 22:35:09,632 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:09,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:09,632 INFO L82 PathProgramCache]: Analyzing trace with hash -72771304, now seen corresponding path program 79 times [2021-06-12 22:35:09,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:09,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301327745] [2021-06-12 22:35:09,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:09,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:09,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301327745] [2021-06-12 22:35:09,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301327745] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:09,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:09,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:09,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341613551] [2021-06-12 22:35:09,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:09,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:09,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:09,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:09,829 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) [2021-06-12 22:35:10,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:10,875 INFO L93 Difference]: Finished difference Result 3979 states and 13198 transitions. [2021-06-12 22:35:10,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-12 22:35:10,876 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 [2021-06-12 22:35:10,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:10,882 INFO L225 Difference]: With dead ends: 3979 [2021-06-12 22:35:10,883 INFO L226 Difference]: Without dead ends: 3912 [2021-06-12 22:35:10,883 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 679.7ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-06-12 22:35:10,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2021-06-12 22:35:10,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3622. [2021-06-12 22:35:10,931 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) [2021-06-12 22:35:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 12135 transitions. [2021-06-12 22:35:10,937 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 12135 transitions. Word has length 39 [2021-06-12 22:35:10,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:10,938 INFO L482 AbstractCegarLoop]: Abstraction has 3622 states and 12135 transitions. [2021-06-12 22:35:10,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 12135 transitions. [2021-06-12 22:35:10,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:10,942 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:10,942 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:10,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-12 22:35:10,943 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:10,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:10,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1955185386, now seen corresponding path program 80 times [2021-06-12 22:35:10,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:10,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381231812] [2021-06-12 22:35:10,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:11,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:11,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381231812] [2021-06-12 22:35:11,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381231812] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:11,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:11,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:11,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882686763] [2021-06-12 22:35:11,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:11,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:11,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:11,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:11,129 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) [2021-06-12 22:35:12,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:12,653 INFO L93 Difference]: Finished difference Result 4064 states and 13387 transitions. [2021-06-12 22:35:12,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:35:12,653 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 [2021-06-12 22:35:12,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:12,660 INFO L225 Difference]: With dead ends: 4064 [2021-06-12 22:35:12,660 INFO L226 Difference]: Without dead ends: 4021 [2021-06-12 22:35:12,661 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 978.7ms TimeCoverageRelationStatistics Valid=263, Invalid=2599, Unknown=0, NotChecked=0, Total=2862 [2021-06-12 22:35:12,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2021-06-12 22:35:12,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 3628. [2021-06-12 22:35:12,708 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) [2021-06-12 22:35:12,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 12148 transitions. [2021-06-12 22:35:12,715 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 12148 transitions. Word has length 39 [2021-06-12 22:35:12,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:12,715 INFO L482 AbstractCegarLoop]: Abstraction has 3628 states and 12148 transitions. [2021-06-12 22:35:12,715 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:12,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 12148 transitions. [2021-06-12 22:35:12,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:12,719 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:12,719 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:12,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-12 22:35:12,719 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:12,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:12,719 INFO L82 PathProgramCache]: Analyzing trace with hash 559183608, now seen corresponding path program 81 times [2021-06-12 22:35:12,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:12,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468633464] [2021-06-12 22:35:12,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:12,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:12,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468633464] [2021-06-12 22:35:12,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468633464] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:12,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:12,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:12,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592898738] [2021-06-12 22:35:12,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:12,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:12,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:12,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:12,933 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) [2021-06-12 22:35:14,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:14,296 INFO L93 Difference]: Finished difference Result 4019 states and 13283 transitions. [2021-06-12 22:35:14,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:35:14,296 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:14,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:14,303 INFO L225 Difference]: With dead ends: 4019 [2021-06-12 22:35:14,303 INFO L226 Difference]: Without dead ends: 3955 [2021-06-12 22:35:14,303 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 905.7ms TimeCoverageRelationStatistics Valid=254, Invalid=2502, Unknown=0, NotChecked=0, Total=2756 [2021-06-12 22:35:14,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-06-12 22:35:14,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3610. [2021-06-12 22:35:14,349 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) [2021-06-12 22:35:14,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12105 transitions. [2021-06-12 22:35:14,355 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12105 transitions. Word has length 39 [2021-06-12 22:35:14,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:14,355 INFO L482 AbstractCegarLoop]: Abstraction has 3610 states and 12105 transitions. [2021-06-12 22:35:14,355 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) [2021-06-12 22:35:14,355 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12105 transitions. [2021-06-12 22:35:14,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:14,360 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:14,360 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:14,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-12 22:35:14,360 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:14,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:14,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2121643786, now seen corresponding path program 82 times [2021-06-12 22:35:14,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:14,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75699762] [2021-06-12 22:35:14,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:14,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:14,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75699762] [2021-06-12 22:35:14,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75699762] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:14,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:14,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:14,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296958843] [2021-06-12 22:35:14,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:14,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:14,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:14,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:14,556 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) [2021-06-12 22:35:15,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:15,621 INFO L93 Difference]: Finished difference Result 3979 states and 13192 transitions. [2021-06-12 22:35:15,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-12 22:35:15,622 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:15,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:15,628 INFO L225 Difference]: With dead ends: 3979 [2021-06-12 22:35:15,628 INFO L226 Difference]: Without dead ends: 3912 [2021-06-12 22:35:15,628 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 679.3ms TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2021-06-12 22:35:15,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2021-06-12 22:35:15,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3618. [2021-06-12 22:35:15,670 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) [2021-06-12 22:35:15,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 12121 transitions. [2021-06-12 22:35:15,676 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 12121 transitions. Word has length 39 [2021-06-12 22:35:15,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:15,676 INFO L482 AbstractCegarLoop]: Abstraction has 3618 states and 12121 transitions. [2021-06-12 22:35:15,676 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:15,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 12121 transitions. [2021-06-12 22:35:15,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:15,680 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:15,680 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:15,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-12 22:35:15,680 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:15,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:15,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1949500568, now seen corresponding path program 83 times [2021-06-12 22:35:15,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:15,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116172267] [2021-06-12 22:35:15,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:15,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:15,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:15,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116172267] [2021-06-12 22:35:15,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116172267] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:15,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:15,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:15,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752431463] [2021-06-12 22:35:15,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:15,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:15,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:15,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:15,885 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) [2021-06-12 22:35:16,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:16,945 INFO L93 Difference]: Finished difference Result 3967 states and 13152 transitions. [2021-06-12 22:35:16,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-12 22:35:16,946 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:16,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:16,953 INFO L225 Difference]: With dead ends: 3967 [2021-06-12 22:35:16,953 INFO L226 Difference]: Without dead ends: 3904 [2021-06-12 22:35:16,953 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 680.2ms TimeCoverageRelationStatistics Valid=208, Invalid=1954, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:35:16,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-06-12 22:35:16,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3610. [2021-06-12 22:35:16,997 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) [2021-06-12 22:35:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12101 transitions. [2021-06-12 22:35:17,003 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12101 transitions. Word has length 39 [2021-06-12 22:35:17,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:17,003 INFO L482 AbstractCegarLoop]: Abstraction has 3610 states and 12101 transitions. [2021-06-12 22:35:17,003 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) [2021-06-12 22:35:17,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12101 transitions. [2021-06-12 22:35:17,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:17,008 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:17,008 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:17,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-12 22:35:17,008 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:17,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:17,008 INFO L82 PathProgramCache]: Analyzing trace with hash 913344568, now seen corresponding path program 84 times [2021-06-12 22:35:17,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:17,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625293041] [2021-06-12 22:35:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:17,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:17,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625293041] [2021-06-12 22:35:17,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625293041] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:17,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:17,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:17,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702452906] [2021-06-12 22:35:17,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:17,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:17,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:17,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:17,216 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) [2021-06-12 22:35:18,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:18,610 INFO L93 Difference]: Finished difference Result 4130 states and 13541 transitions. [2021-06-12 22:35:18,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-12 22:35:18,610 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:18,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:18,617 INFO L225 Difference]: With dead ends: 4130 [2021-06-12 22:35:18,617 INFO L226 Difference]: Without dead ends: 4087 [2021-06-12 22:35:18,618 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 936.7ms TimeCoverageRelationStatistics Valid=281, Invalid=2799, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:35:18,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4087 states. [2021-06-12 22:35:18,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4087 to 3618. [2021-06-12 22:35:18,670 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) [2021-06-12 22:35:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 12121 transitions. [2021-06-12 22:35:18,677 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 12121 transitions. Word has length 39 [2021-06-12 22:35:18,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:18,677 INFO L482 AbstractCegarLoop]: Abstraction has 3618 states and 12121 transitions. [2021-06-12 22:35:18,677 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:18,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 12121 transitions. [2021-06-12 22:35:18,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:18,682 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:18,682 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:18,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-12 22:35:18,682 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:18,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:18,683 INFO L82 PathProgramCache]: Analyzing trace with hash -867253734, now seen corresponding path program 85 times [2021-06-12 22:35:18,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:18,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860827830] [2021-06-12 22:35:18,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:18,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:18,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:18,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860827830] [2021-06-12 22:35:18,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860827830] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:18,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:18,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:18,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676238627] [2021-06-12 22:35:18,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:18,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:18,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:18,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:18,904 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) [2021-06-12 22:35:20,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:20,249 INFO L93 Difference]: Finished difference Result 4118 states and 13503 transitions. [2021-06-12 22:35:20,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:35:20,249 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:20,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:20,257 INFO L225 Difference]: With dead ends: 4118 [2021-06-12 22:35:20,257 INFO L226 Difference]: Without dead ends: 4066 [2021-06-12 22:35:20,257 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 900.8ms TimeCoverageRelationStatistics Valid=273, Invalid=2697, Unknown=0, NotChecked=0, Total=2970 [2021-06-12 22:35:20,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4066 states. [2021-06-12 22:35:20,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4066 to 3610. [2021-06-12 22:35:20,303 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) [2021-06-12 22:35:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12101 transitions. [2021-06-12 22:35:20,309 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12101 transitions. Word has length 39 [2021-06-12 22:35:20,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:20,309 INFO L482 AbstractCegarLoop]: Abstraction has 3610 states and 12101 transitions. [2021-06-12 22:35:20,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:20,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12101 transitions. [2021-06-12 22:35:20,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:20,314 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:20,314 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:20,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-12 22:35:20,314 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:20,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:20,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1831828138, now seen corresponding path program 86 times [2021-06-12 22:35:20,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:20,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422422148] [2021-06-12 22:35:20,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:20,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:20,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:20,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422422148] [2021-06-12 22:35:20,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422422148] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:20,526 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:20,526 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:20,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280184242] [2021-06-12 22:35:20,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:20,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:20,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:20,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:20,527 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) [2021-06-12 22:35:21,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:21,630 INFO L93 Difference]: Finished difference Result 4095 states and 13426 transitions. [2021-06-12 22:35:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-12 22:35:21,630 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:21,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:21,637 INFO L225 Difference]: With dead ends: 4095 [2021-06-12 22:35:21,637 INFO L226 Difference]: Without dead ends: 4040 [2021-06-12 22:35:21,637 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 738.0ms TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2021-06-12 22:35:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-06-12 22:35:21,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3612. [2021-06-12 22:35:21,685 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) [2021-06-12 22:35:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12104 transitions. [2021-06-12 22:35:21,691 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12104 transitions. Word has length 39 [2021-06-12 22:35:21,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:21,691 INFO L482 AbstractCegarLoop]: Abstraction has 3612 states and 12104 transitions. [2021-06-12 22:35:21,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:21,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12104 transitions. [2021-06-12 22:35:21,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:21,696 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:21,696 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:21,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-12 22:35:21,696 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:21,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:21,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1290486936, now seen corresponding path program 87 times [2021-06-12 22:35:21,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:21,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894515925] [2021-06-12 22:35:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:21,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:21,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894515925] [2021-06-12 22:35:21,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894515925] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:21,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:21,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:21,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346381968] [2021-06-12 22:35:21,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:21,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:21,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:21,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:21,918 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) [2021-06-12 22:35:22,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:22,966 INFO L93 Difference]: Finished difference Result 4030 states and 13274 transitions. [2021-06-12 22:35:22,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-12 22:35:22,966 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 [2021-06-12 22:35:22,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:22,972 INFO L225 Difference]: With dead ends: 4030 [2021-06-12 22:35:22,972 INFO L226 Difference]: Without dead ends: 3984 [2021-06-12 22:35:22,973 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 669.1ms TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-06-12 22:35:22,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-06-12 22:35:23,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3616. [2021-06-12 22:35:23,017 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) [2021-06-12 22:35:23,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 12112 transitions. [2021-06-12 22:35:23,022 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 12112 transitions. Word has length 39 [2021-06-12 22:35:23,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:23,023 INFO L482 AbstractCegarLoop]: Abstraction has 3616 states and 12112 transitions. [2021-06-12 22:35:23,023 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:23,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 12112 transitions. [2021-06-12 22:35:23,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:23,027 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:23,027 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:23,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-12 22:35:23,027 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:23,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:23,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1537953098, now seen corresponding path program 88 times [2021-06-12 22:35:23,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:23,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558871217] [2021-06-12 22:35:23,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:23,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:23,212 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:23,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558871217] [2021-06-12 22:35:23,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558871217] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:23,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:23,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:23,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932218069] [2021-06-12 22:35:23,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:23,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:23,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:23,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:23,213 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) [2021-06-12 22:35:24,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:24,253 INFO L93 Difference]: Finished difference Result 3990 states and 13185 transitions. [2021-06-12 22:35:24,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-12 22:35:24,254 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:24,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:24,260 INFO L225 Difference]: With dead ends: 3990 [2021-06-12 22:35:24,260 INFO L226 Difference]: Without dead ends: 3941 [2021-06-12 22:35:24,260 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 679.7ms TimeCoverageRelationStatistics Valid=204, Invalid=1866, Unknown=0, NotChecked=0, Total=2070 [2021-06-12 22:35:24,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2021-06-12 22:35:24,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3606. [2021-06-12 22:35:24,302 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) [2021-06-12 22:35:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12091 transitions. [2021-06-12 22:35:24,307 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12091 transitions. Word has length 39 [2021-06-12 22:35:24,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:24,308 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 12091 transitions. [2021-06-12 22:35:24,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:24,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12091 transitions. [2021-06-12 22:35:24,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:24,312 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:24,312 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:24,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-12 22:35:24,312 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:24,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:24,312 INFO L82 PathProgramCache]: Analyzing trace with hash -834566922, now seen corresponding path program 89 times [2021-06-12 22:35:24,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:24,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61389673] [2021-06-12 22:35:24,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:24,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:24,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61389673] [2021-06-12 22:35:24,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61389673] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:24,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:24,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:24,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916077571] [2021-06-12 22:35:24,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:24,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:24,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:24,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:24,501 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) [2021-06-12 22:35:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:25,508 INFO L93 Difference]: Finished difference Result 4037 states and 13379 transitions. [2021-06-12 22:35:25,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-12 22:35:25,509 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 [2021-06-12 22:35:25,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:25,515 INFO L225 Difference]: With dead ends: 4037 [2021-06-12 22:35:25,515 INFO L226 Difference]: Without dead ends: 3970 [2021-06-12 22:35:25,516 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 586.7ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-06-12 22:35:25,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2021-06-12 22:35:25,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3646. [2021-06-12 22:35:25,575 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) [2021-06-12 22:35:25,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12199 transitions. [2021-06-12 22:35:25,581 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12199 transitions. Word has length 39 [2021-06-12 22:35:25,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:25,582 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12199 transitions. [2021-06-12 22:35:25,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:25,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12199 transitions. [2021-06-12 22:35:25,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:25,586 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:25,586 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:25,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-12 22:35:25,586 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:25,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:25,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1006710140, now seen corresponding path program 90 times [2021-06-12 22:35:25,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:25,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121787417] [2021-06-12 22:35:25,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:25,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:25,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121787417] [2021-06-12 22:35:25,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121787417] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:25,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:25,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:25,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292244956] [2021-06-12 22:35:25,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:25,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:25,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:25,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:25,772 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) [2021-06-12 22:35:26,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:26,788 INFO L93 Difference]: Finished difference Result 4025 states and 13339 transitions. [2021-06-12 22:35:26,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-12 22:35:26,789 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:26,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:26,795 INFO L225 Difference]: With dead ends: 4025 [2021-06-12 22:35:26,795 INFO L226 Difference]: Without dead ends: 3962 [2021-06-12 22:35:26,795 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 584.1ms TimeCoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2021-06-12 22:35:26,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2021-06-12 22:35:26,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3638. [2021-06-12 22:35:26,839 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) [2021-06-12 22:35:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12175 transitions. [2021-06-12 22:35:26,846 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12175 transitions. Word has length 39 [2021-06-12 22:35:26,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:26,846 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12175 transitions. [2021-06-12 22:35:26,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:26,846 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12175 transitions. [2021-06-12 22:35:26,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:26,850 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:26,850 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:26,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-12 22:35:26,850 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:26,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:26,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1485423000, now seen corresponding path program 91 times [2021-06-12 22:35:26,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:26,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248577903] [2021-06-12 22:35:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:27,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:27,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248577903] [2021-06-12 22:35:27,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248577903] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:27,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:27,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:27,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485887274] [2021-06-12 22:35:27,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:27,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:27,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:27,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:27,034 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) [2021-06-12 22:35:28,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:28,048 INFO L93 Difference]: Finished difference Result 4037 states and 13367 transitions. [2021-06-12 22:35:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-12 22:35:28,048 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 [2021-06-12 22:35:28,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:28,055 INFO L225 Difference]: With dead ends: 4037 [2021-06-12 22:35:28,055 INFO L226 Difference]: Without dead ends: 3914 [2021-06-12 22:35:28,055 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 568.6ms TimeCoverageRelationStatistics Valid=165, Invalid=1557, Unknown=0, NotChecked=0, Total=1722 [2021-06-12 22:35:28,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2021-06-12 22:35:28,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3606. [2021-06-12 22:35:28,102 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) [2021-06-12 22:35:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12075 transitions. [2021-06-12 22:35:28,109 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12075 transitions. Word has length 39 [2021-06-12 22:35:28,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:28,109 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 12075 transitions. [2021-06-12 22:35:28,109 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12075 transitions. [2021-06-12 22:35:28,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:28,114 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:28,114 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:28,114 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-12 22:35:28,114 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:28,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:28,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1377984042, now seen corresponding path program 92 times [2021-06-12 22:35:28,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:28,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311229540] [2021-06-12 22:35:28,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:28,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:28,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:28,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311229540] [2021-06-12 22:35:28,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311229540] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:28,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:28,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:28,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192462871] [2021-06-12 22:35:28,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:28,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:28,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:28,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:28,298 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) [2021-06-12 22:35:29,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:29,913 INFO L93 Difference]: Finished difference Result 5612 states and 19007 transitions. [2021-06-12 22:35:29,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-12 22:35:29,914 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:29,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:29,923 INFO L225 Difference]: With dead ends: 5612 [2021-06-12 22:35:29,923 INFO L226 Difference]: Without dead ends: 5569 [2021-06-12 22:35:29,924 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 895.4ms TimeCoverageRelationStatistics Valid=279, Invalid=2801, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:35:29,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5569 states. [2021-06-12 22:35:29,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5569 to 3620. [2021-06-12 22:35:29,986 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) [2021-06-12 22:35:29,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 12116 transitions. [2021-06-12 22:35:29,992 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 12116 transitions. Word has length 39 [2021-06-12 22:35:29,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:29,992 INFO L482 AbstractCegarLoop]: Abstraction has 3620 states and 12116 transitions. [2021-06-12 22:35:29,992 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) [2021-06-12 22:35:29,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 12116 transitions. [2021-06-12 22:35:29,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:29,996 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:29,996 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:29,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-12 22:35:29,996 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:29,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:29,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1136384952, now seen corresponding path program 93 times [2021-06-12 22:35:29,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:29,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717649302] [2021-06-12 22:35:29,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:30,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:30,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717649302] [2021-06-12 22:35:30,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717649302] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:30,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:30,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:30,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391556484] [2021-06-12 22:35:30,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:30,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:30,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:30,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:30,183 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) [2021-06-12 22:35:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:32,129 INFO L93 Difference]: Finished difference Result 6473 states and 21937 transitions. [2021-06-12 22:35:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-12 22:35:32,129 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:32,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:32,140 INFO L225 Difference]: With dead ends: 6473 [2021-06-12 22:35:32,140 INFO L226 Difference]: Without dead ends: 6421 [2021-06-12 22:35:32,141 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 1066.6ms TimeCoverageRelationStatistics Valid=321, Invalid=3461, Unknown=0, NotChecked=0, Total=3782 [2021-06-12 22:35:32,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6421 states. [2021-06-12 22:35:32,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6421 to 3606. [2021-06-12 22:35:32,199 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) [2021-06-12 22:35:32,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12075 transitions. [2021-06-12 22:35:32,205 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12075 transitions. Word has length 39 [2021-06-12 22:35:32,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:32,205 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 12075 transitions. [2021-06-12 22:35:32,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:32,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12075 transitions. [2021-06-12 22:35:32,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:32,209 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:32,209 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:32,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-12 22:35:32,209 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:32,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:32,210 INFO L82 PathProgramCache]: Analyzing trace with hash -459500472, now seen corresponding path program 94 times [2021-06-12 22:35:32,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:32,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494756920] [2021-06-12 22:35:32,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:32,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:32,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494756920] [2021-06-12 22:35:32,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494756920] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:32,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:32,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:32,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759400772] [2021-06-12 22:35:32,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:32,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:32,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:32,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:32,415 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) [2021-06-12 22:35:33,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:33,695 INFO L93 Difference]: Finished difference Result 5417 states and 18181 transitions. [2021-06-12 22:35:33,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:35:33,695 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 [2021-06-12 22:35:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:33,704 INFO L225 Difference]: With dead ends: 5417 [2021-06-12 22:35:33,704 INFO L226 Difference]: Without dead ends: 5362 [2021-06-12 22:35:33,704 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 702.6ms TimeCoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:35:33,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2021-06-12 22:35:33,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 3614. [2021-06-12 22:35:33,763 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) [2021-06-12 22:35:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 12099 transitions. [2021-06-12 22:35:33,770 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 12099 transitions. Word has length 39 [2021-06-12 22:35:33,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:33,770 INFO L482 AbstractCegarLoop]: Abstraction has 3614 states and 12099 transitions. [2021-06-12 22:35:33,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:33,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 12099 transitions. [2021-06-12 22:35:33,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:33,775 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:33,775 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:33,775 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-12 22:35:33,775 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:33,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:33,775 INFO L82 PathProgramCache]: Analyzing trace with hash 713151750, now seen corresponding path program 95 times [2021-06-12 22:35:33,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:33,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254777303] [2021-06-12 22:35:33,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:33,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:33,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:33,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254777303] [2021-06-12 22:35:33,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254777303] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:33,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:33,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:33,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562867364] [2021-06-12 22:35:33,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:33,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:33,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:33,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:33,974 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) [2021-06-12 22:35:35,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:35,499 INFO L93 Difference]: Finished difference Result 6278 states and 21115 transitions. [2021-06-12 22:35:35,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-12 22:35:35,499 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:35,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:35,509 INFO L225 Difference]: With dead ends: 6278 [2021-06-12 22:35:35,509 INFO L226 Difference]: Without dead ends: 6218 [2021-06-12 22:35:35,510 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 814.9ms TimeCoverageRelationStatistics Valid=249, Invalid=2507, Unknown=0, NotChecked=0, Total=2756 [2021-06-12 22:35:35,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6218 states. [2021-06-12 22:35:35,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6218 to 3612. [2021-06-12 22:35:35,568 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) [2021-06-12 22:35:35,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12094 transitions. [2021-06-12 22:35:35,574 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12094 transitions. Word has length 39 [2021-06-12 22:35:35,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:35,574 INFO L482 AbstractCegarLoop]: Abstraction has 3612 states and 12094 transitions. [2021-06-12 22:35:35,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:35,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12094 transitions. [2021-06-12 22:35:35,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:35,594 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:35,594 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:35,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-12 22:35:35,594 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:35,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:35,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1164251852, now seen corresponding path program 96 times [2021-06-12 22:35:35,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:35,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187110698] [2021-06-12 22:35:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:35,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:35,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:35,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187110698] [2021-06-12 22:35:35,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187110698] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:35,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:35,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:35,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097375147] [2021-06-12 22:35:35,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:35,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:35,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:35,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:35,781 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) [2021-06-12 22:35:37,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:37,063 INFO L93 Difference]: Finished difference Result 5378 states and 18115 transitions. [2021-06-12 22:35:37,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:35:37,063 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 [2021-06-12 22:35:37,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:37,072 INFO L225 Difference]: With dead ends: 5378 [2021-06-12 22:35:37,072 INFO L226 Difference]: Without dead ends: 5287 [2021-06-12 22:35:37,072 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 684.2ms TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:35:37,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5287 states. [2021-06-12 22:35:37,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5287 to 3612. [2021-06-12 22:35:37,126 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) [2021-06-12 22:35:37,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12088 transitions. [2021-06-12 22:35:37,132 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12088 transitions. Word has length 39 [2021-06-12 22:35:37,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:37,132 INFO L482 AbstractCegarLoop]: Abstraction has 3612 states and 12088 transitions. [2021-06-12 22:35:37,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:37,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12088 transitions. [2021-06-12 22:35:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:37,137 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:37,137 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:37,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-12 22:35:37,137 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:37,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:37,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1628233238, now seen corresponding path program 97 times [2021-06-12 22:35:37,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:37,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701513913] [2021-06-12 22:35:37,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:37,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:37,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701513913] [2021-06-12 22:35:37,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701513913] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:37,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:37,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:37,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73500913] [2021-06-12 22:35:37,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:37,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:37,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:37,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:37,342 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) [2021-06-12 22:35:38,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:38,836 INFO L93 Difference]: Finished difference Result 6191 states and 20917 transitions. [2021-06-12 22:35:38,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-12 22:35:38,837 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 [2021-06-12 22:35:38,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:38,847 INFO L225 Difference]: With dead ends: 6191 [2021-06-12 22:35:38,847 INFO L226 Difference]: Without dead ends: 6075 [2021-06-12 22:35:38,847 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 775.5ms TimeCoverageRelationStatistics Valid=228, Invalid=2322, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:35:38,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6075 states. [2021-06-12 22:35:38,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6075 to 3590. [2021-06-12 22:35:38,907 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) [2021-06-12 22:35:38,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 12037 transitions. [2021-06-12 22:35:38,938 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 12037 transitions. Word has length 39 [2021-06-12 22:35:38,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:38,938 INFO L482 AbstractCegarLoop]: Abstraction has 3590 states and 12037 transitions. [2021-06-12 22:35:38,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:38,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 12037 transitions. [2021-06-12 22:35:38,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:38,942 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:38,942 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:38,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-12 22:35:38,943 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:38,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:38,943 INFO L82 PathProgramCache]: Analyzing trace with hash -2037500794, now seen corresponding path program 98 times [2021-06-12 22:35:38,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:38,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694748545] [2021-06-12 22:35:38,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:39,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:39,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:39,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694748545] [2021-06-12 22:35:39,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694748545] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:39,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:39,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:39,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027559107] [2021-06-12 22:35:39,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:39,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:39,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:39,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:39,126 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) [2021-06-12 22:35:40,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:40,001 INFO L93 Difference]: Finished difference Result 3901 states and 12905 transitions. [2021-06-12 22:35:40,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-12 22:35:40,002 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:40,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:40,009 INFO L225 Difference]: With dead ends: 3901 [2021-06-12 22:35:40,009 INFO L226 Difference]: Without dead ends: 3834 [2021-06-12 22:35:40,009 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 552.3ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-06-12 22:35:40,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2021-06-12 22:35:40,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 3646. [2021-06-12 22:35:40,056 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) [2021-06-12 22:35:40,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12185 transitions. [2021-06-12 22:35:40,062 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12185 transitions. Word has length 39 [2021-06-12 22:35:40,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:40,062 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12185 transitions. [2021-06-12 22:35:40,062 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:40,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12185 transitions. [2021-06-12 22:35:40,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:40,067 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:40,067 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:40,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-12 22:35:40,067 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:40,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:40,067 INFO L82 PathProgramCache]: Analyzing trace with hash 2085323284, now seen corresponding path program 99 times [2021-06-12 22:35:40,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:40,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965760308] [2021-06-12 22:35:40,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:40,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:40,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965760308] [2021-06-12 22:35:40,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965760308] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:40,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:40,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:40,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962162439] [2021-06-12 22:35:40,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:40,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:40,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:40,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:40,249 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) [2021-06-12 22:35:41,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:41,087 INFO L93 Difference]: Finished difference Result 3889 states and 12865 transitions. [2021-06-12 22:35:41,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-12 22:35:41,087 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:41,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:41,093 INFO L225 Difference]: With dead ends: 3889 [2021-06-12 22:35:41,093 INFO L226 Difference]: Without dead ends: 3826 [2021-06-12 22:35:41,094 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 542.1ms TimeCoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2021-06-12 22:35:41,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3826 states. [2021-06-12 22:35:41,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3826 to 3638. [2021-06-12 22:35:41,136 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) [2021-06-12 22:35:41,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12161 transitions. [2021-06-12 22:35:41,143 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12161 transitions. Word has length 39 [2021-06-12 22:35:41,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:41,143 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12161 transitions. [2021-06-12 22:35:41,143 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) [2021-06-12 22:35:41,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12161 transitions. [2021-06-12 22:35:41,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:41,147 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:41,147 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:41,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-12 22:35:41,147 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:41,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:41,148 INFO L82 PathProgramCache]: Analyzing trace with hash 282489128, now seen corresponding path program 100 times [2021-06-12 22:35:41,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:41,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575737495] [2021-06-12 22:35:41,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:41,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:41,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575737495] [2021-06-12 22:35:41,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575737495] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:41,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:41,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:41,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946705307] [2021-06-12 22:35:41,332 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:41,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:41,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:41,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:41,332 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) [2021-06-12 22:35:42,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:42,167 INFO L93 Difference]: Finished difference Result 3889 states and 12857 transitions. [2021-06-12 22:35:42,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-12 22:35:42,169 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 [2021-06-12 22:35:42,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:42,175 INFO L225 Difference]: With dead ends: 3889 [2021-06-12 22:35:42,175 INFO L226 Difference]: Without dead ends: 3754 [2021-06-12 22:35:42,175 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 535.3ms TimeCoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2021-06-12 22:35:42,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2021-06-12 22:35:42,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3594. [2021-06-12 22:35:42,234 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) [2021-06-12 22:35:42,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 12045 transitions. [2021-06-12 22:35:42,240 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 12045 transitions. Word has length 39 [2021-06-12 22:35:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:42,240 INFO L482 AbstractCegarLoop]: Abstraction has 3594 states and 12045 transitions. [2021-06-12 22:35:42,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 12045 transitions. [2021-06-12 22:35:42,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:42,244 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:42,244 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:42,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-12 22:35:42,244 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:42,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:42,245 INFO L82 PathProgramCache]: Analyzing trace with hash 861908364, now seen corresponding path program 101 times [2021-06-12 22:35:42,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:42,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695790909] [2021-06-12 22:35:42,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:42,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:42,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695790909] [2021-06-12 22:35:42,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695790909] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:42,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:42,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:42,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920191808] [2021-06-12 22:35:42,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:42,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:42,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:42,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:42,436 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) [2021-06-12 22:35:43,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:43,211 INFO L93 Difference]: Finished difference Result 3825 states and 12693 transitions. [2021-06-12 22:35:43,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-12 22:35:43,211 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 [2021-06-12 22:35:43,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:43,217 INFO L225 Difference]: With dead ends: 3825 [2021-06-12 22:35:43,217 INFO L226 Difference]: Without dead ends: 3758 [2021-06-12 22:35:43,218 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 510.4ms TimeCoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2021-06-12 22:35:43,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2021-06-12 22:35:43,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3650. [2021-06-12 22:35:43,265 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) [2021-06-12 22:35:43,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12193 transitions. [2021-06-12 22:35:43,271 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12193 transitions. Word has length 39 [2021-06-12 22:35:43,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:43,271 INFO L482 AbstractCegarLoop]: Abstraction has 3650 states and 12193 transitions. [2021-06-12 22:35:43,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:43,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12193 transitions. [2021-06-12 22:35:43,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:43,276 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:43,276 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:43,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-12 22:35:43,276 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:43,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:43,277 INFO L82 PathProgramCache]: Analyzing trace with hash 689765146, now seen corresponding path program 102 times [2021-06-12 22:35:43,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:43,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503493178] [2021-06-12 22:35:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:43,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:43,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:43,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503493178] [2021-06-12 22:35:43,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503493178] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:43,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:43,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:43,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731126673] [2021-06-12 22:35:43,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:43,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:43,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:43,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:43,464 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) [2021-06-12 22:35:44,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:44,242 INFO L93 Difference]: Finished difference Result 3813 states and 12653 transitions. [2021-06-12 22:35:44,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-12 22:35:44,242 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 [2021-06-12 22:35:44,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:44,248 INFO L225 Difference]: With dead ends: 3813 [2021-06-12 22:35:44,248 INFO L226 Difference]: Without dead ends: 3750 [2021-06-12 22:35:44,248 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 510.7ms TimeCoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2021-06-12 22:35:44,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-06-12 22:35:44,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3642. [2021-06-12 22:35:44,292 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) [2021-06-12 22:35:44,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12169 transitions. [2021-06-12 22:35:44,298 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12169 transitions. Word has length 39 [2021-06-12 22:35:44,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:44,298 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12169 transitions. [2021-06-12 22:35:44,298 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) [2021-06-12 22:35:44,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12169 transitions. [2021-06-12 22:35:44,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:44,302 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:44,303 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:44,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-12 22:35:44,303 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:44,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:44,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1113069010, now seen corresponding path program 103 times [2021-06-12 22:35:44,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:44,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011328474] [2021-06-12 22:35:44,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:44,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:44,482 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:44,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011328474] [2021-06-12 22:35:44,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011328474] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:44,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:44,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:35:44,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269813595] [2021-06-12 22:35:44,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:35:44,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:44,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:35:44,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:35:44,483 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) [2021-06-12 22:35:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:45,254 INFO L93 Difference]: Finished difference Result 3813 states and 12645 transitions. [2021-06-12 22:35:45,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-12 22:35:45,254 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:35:45,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:45,261 INFO L225 Difference]: With dead ends: 3813 [2021-06-12 22:35:45,261 INFO L226 Difference]: Without dead ends: 3662 [2021-06-12 22:35:45,261 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 498.5ms TimeCoverageRelationStatistics Valid=142, Invalid=1340, Unknown=0, NotChecked=0, Total=1482 [2021-06-12 22:35:45,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2021-06-12 22:35:45,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3582. [2021-06-12 22:35:45,329 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) [2021-06-12 22:35:45,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 12017 transitions. [2021-06-12 22:35:45,334 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 12017 transitions. Word has length 39 [2021-06-12 22:35:45,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:45,334 INFO L482 AbstractCegarLoop]: Abstraction has 3582 states and 12017 transitions. [2021-06-12 22:35:45,334 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:45,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 12017 transitions. [2021-06-12 22:35:45,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:45,339 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:45,339 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:45,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-12 22:35:45,339 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:45,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:45,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1416068404, now seen corresponding path program 104 times [2021-06-12 22:35:45,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:45,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318947944] [2021-06-12 22:35:45,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:45,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:45,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318947944] [2021-06-12 22:35:45,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318947944] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:45,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:45,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:35:45,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770737124] [2021-06-12 22:35:45,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:35:45,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:45,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:35:45,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:35:45,489 INFO L87 Difference]: Start difference. First operand 3582 states and 12017 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) [2021-06-12 22:35:46,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:46,518 INFO L93 Difference]: Finished difference Result 4145 states and 13826 transitions. [2021-06-12 22:35:46,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-12 22:35:46,518 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 [2021-06-12 22:35:46,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:46,525 INFO L225 Difference]: With dead ends: 4145 [2021-06-12 22:35:46,525 INFO L226 Difference]: Without dead ends: 4066 [2021-06-12 22:35:46,525 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 635.2ms TimeCoverageRelationStatistics Valid=209, Invalid=1771, Unknown=0, NotChecked=0, Total=1980 [2021-06-12 22:35:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4066 states. [2021-06-12 22:35:46,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4066 to 3658. [2021-06-12 22:35:46,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.3511074651353567) internal successors, (12255), 3657 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) [2021-06-12 22:35:46,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12255 transitions. [2021-06-12 22:35:46,575 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12255 transitions. Word has length 39 [2021-06-12 22:35:46,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:46,575 INFO L482 AbstractCegarLoop]: Abstraction has 3658 states and 12255 transitions. [2021-06-12 22:35:46,575 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) [2021-06-12 22:35:46,575 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12255 transitions. [2021-06-12 22:35:46,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:46,579 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:46,579 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:46,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-12 22:35:46,579 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:46,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:46,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1192929108, now seen corresponding path program 105 times [2021-06-12 22:35:46,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:46,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994889068] [2021-06-12 22:35:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:46,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:46,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:46,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994889068] [2021-06-12 22:35:46,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994889068] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:46,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:46,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:35:46,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201249284] [2021-06-12 22:35:46,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:35:46,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:46,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:35:46,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:35:46,733 INFO L87 Difference]: Start difference. First operand 3658 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) [2021-06-12 22:35:48,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:48,110 INFO L93 Difference]: Finished difference Result 4191 states and 13951 transitions. [2021-06-12 22:35:48,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-12 22:35:48,111 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 [2021-06-12 22:35:48,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:48,117 INFO L225 Difference]: With dead ends: 4191 [2021-06-12 22:35:48,117 INFO L226 Difference]: Without dead ends: 4061 [2021-06-12 22:35:48,118 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 861.7ms TimeCoverageRelationStatistics Valid=264, Invalid=2492, Unknown=0, NotChecked=0, Total=2756 [2021-06-12 22:35:48,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2021-06-12 22:35:48,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 3634. [2021-06-12 22:35:48,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 3.353426919900908) internal successors, (12183), 3633 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) [2021-06-12 22:35:48,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 12183 transitions. [2021-06-12 22:35:48,168 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 12183 transitions. Word has length 39 [2021-06-12 22:35:48,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:48,168 INFO L482 AbstractCegarLoop]: Abstraction has 3634 states and 12183 transitions. [2021-06-12 22:35:48,168 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) [2021-06-12 22:35:48,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 12183 transitions. [2021-06-12 22:35:48,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:48,172 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:48,172 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:48,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-12 22:35:48,173 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:48,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:48,173 INFO L82 PathProgramCache]: Analyzing trace with hash 807820856, now seen corresponding path program 106 times [2021-06-12 22:35:48,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:48,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912510891] [2021-06-12 22:35:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:48,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:48,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912510891] [2021-06-12 22:35:48,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912510891] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:48,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:48,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:35:48,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758486532] [2021-06-12 22:35:48,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:35:48,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:48,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:35:48,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:35:48,338 INFO L87 Difference]: Start difference. First operand 3634 states and 12183 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) [2021-06-12 22:35:49,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:49,588 INFO L93 Difference]: Finished difference Result 4175 states and 13901 transitions. [2021-06-12 22:35:49,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:35:49,588 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 [2021-06-12 22:35:49,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:49,594 INFO L225 Difference]: With dead ends: 4175 [2021-06-12 22:35:49,594 INFO L226 Difference]: Without dead ends: 4108 [2021-06-12 22:35:49,595 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 796.5ms TimeCoverageRelationStatistics Valid=261, Invalid=2391, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:35:49,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-06-12 22:35:49,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3650. [2021-06-12 22:35:49,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.3496848451630585) internal successors, (12223), 3649 states have internal predecessors, (12223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:49,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12223 transitions. [2021-06-12 22:35:49,647 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12223 transitions. Word has length 39 [2021-06-12 22:35:49,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:49,647 INFO L482 AbstractCegarLoop]: Abstraction has 3650 states and 12223 transitions. [2021-06-12 22:35:49,647 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) [2021-06-12 22:35:49,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12223 transitions. [2021-06-12 22:35:49,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:49,652 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:49,652 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:49,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-12 22:35:49,652 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:49,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:49,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1074593226, now seen corresponding path program 107 times [2021-06-12 22:35:49,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:49,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544928068] [2021-06-12 22:35:49,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:49,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:49,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544928068] [2021-06-12 22:35:49,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544928068] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:49,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:49,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:35:49,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070016985] [2021-06-12 22:35:49,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:35:49,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:49,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:35:49,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:35:49,816 INFO L87 Difference]: Start difference. First operand 3650 states and 12223 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) [2021-06-12 22:35:51,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:51,460 INFO L93 Difference]: Finished difference Result 4312 states and 14258 transitions. [2021-06-12 22:35:51,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-12 22:35:51,460 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 [2021-06-12 22:35:51,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:51,467 INFO L225 Difference]: With dead ends: 4312 [2021-06-12 22:35:51,467 INFO L226 Difference]: Without dead ends: 4269 [2021-06-12 22:35:51,467 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 1060.2ms TimeCoverageRelationStatistics Valid=352, Invalid=3554, Unknown=0, NotChecked=0, Total=3906 [2021-06-12 22:35:51,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2021-06-12 22:35:51,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 3656. [2021-06-12 22:35:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3656 states, 3655 states have (on average 3.3477428180574553) internal successors, (12236), 3655 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) [2021-06-12 22:35:51,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 12236 transitions. [2021-06-12 22:35:51,517 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 12236 transitions. Word has length 39 [2021-06-12 22:35:51,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:51,517 INFO L482 AbstractCegarLoop]: Abstraction has 3656 states and 12236 transitions. [2021-06-12 22:35:51,517 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) [2021-06-12 22:35:51,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 12236 transitions. [2021-06-12 22:35:51,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:51,521 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:51,521 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:51,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-12 22:35:51,521 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:51,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:51,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1439775768, now seen corresponding path program 108 times [2021-06-12 22:35:51,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:51,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127042251] [2021-06-12 22:35:51,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:51,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:51,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127042251] [2021-06-12 22:35:51,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127042251] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:51,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:51,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:35:51,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109423965] [2021-06-12 22:35:51,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:35:51,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:51,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:35:51,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:35:51,683 INFO L87 Difference]: Start difference. First operand 3656 states and 12236 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) [2021-06-12 22:35:53,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:53,241 INFO L93 Difference]: Finished difference Result 4243 states and 14078 transitions. [2021-06-12 22:35:53,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-12 22:35:53,241 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 [2021-06-12 22:35:53,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:53,247 INFO L225 Difference]: With dead ends: 4243 [2021-06-12 22:35:53,248 INFO L226 Difference]: Without dead ends: 4179 [2021-06-12 22:35:53,248 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 1032.2ms TimeCoverageRelationStatistics Valid=325, Invalid=3215, Unknown=0, NotChecked=0, Total=3540 [2021-06-12 22:35:53,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4179 states. [2021-06-12 22:35:53,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4179 to 3638. [2021-06-12 22:35:53,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.3524883145449547) internal successors, (12193), 3637 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) [2021-06-12 22:35:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12193 transitions. [2021-06-12 22:35:53,297 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12193 transitions. Word has length 39 [2021-06-12 22:35:53,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:53,297 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12193 transitions. [2021-06-12 22:35:53,297 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) [2021-06-12 22:35:53,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12193 transitions. [2021-06-12 22:35:53,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:53,301 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:53,301 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:53,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-12 22:35:53,301 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:53,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:53,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1292731350, now seen corresponding path program 109 times [2021-06-12 22:35:53,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:53,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786573915] [2021-06-12 22:35:53,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:53,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:53,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786573915] [2021-06-12 22:35:53,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786573915] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:53,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:53,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:35:53,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865891384] [2021-06-12 22:35:53,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:35:53,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:53,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:35:53,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:35:53,463 INFO L87 Difference]: Start difference. First operand 3638 states and 12193 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) [2021-06-12 22:35:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:54,482 INFO L93 Difference]: Finished difference Result 4061 states and 13536 transitions. [2021-06-12 22:35:54,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-12 22:35:54,482 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 [2021-06-12 22:35:54,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:54,488 INFO L225 Difference]: With dead ends: 4061 [2021-06-12 22:35:54,488 INFO L226 Difference]: Without dead ends: 3994 [2021-06-12 22:35:54,488 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 652.6ms TimeCoverageRelationStatistics Valid=213, Invalid=1857, Unknown=0, NotChecked=0, Total=2070 [2021-06-12 22:35:54,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2021-06-12 22:35:54,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3646. [2021-06-12 22:35:54,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.349519890260631) internal successors, (12209), 3645 states have internal predecessors, (12209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:54,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12209 transitions. [2021-06-12 22:35:54,536 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12209 transitions. Word has length 39 [2021-06-12 22:35:54,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:54,536 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12209 transitions. [2021-06-12 22:35:54,536 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) [2021-06-12 22:35:54,536 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12209 transitions. [2021-06-12 22:35:54,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:54,540 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:54,540 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:54,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-12 22:35:54,540 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:54,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:54,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1464874568, now seen corresponding path program 110 times [2021-06-12 22:35:54,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:54,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788750169] [2021-06-12 22:35:54,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:54,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:54,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:54,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788750169] [2021-06-12 22:35:54,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788750169] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:54,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:54,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:35:54,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717501905] [2021-06-12 22:35:54,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:35:54,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:54,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:35:54,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:35:54,702 INFO L87 Difference]: Start difference. First operand 3646 states and 12209 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) [2021-06-12 22:35:55,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:55,759 INFO L93 Difference]: Finished difference Result 4049 states and 13496 transitions. [2021-06-12 22:35:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:35:55,759 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 [2021-06-12 22:35:55,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:55,765 INFO L225 Difference]: With dead ends: 4049 [2021-06-12 22:35:55,766 INFO L226 Difference]: Without dead ends: 3986 [2021-06-12 22:35:55,766 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 664.7ms TimeCoverageRelationStatistics Valid=219, Invalid=1943, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:35:55,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2021-06-12 22:35:55,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3638. [2021-06-12 22:35:55,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.351388507011273) internal successors, (12189), 3637 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) [2021-06-12 22:35:55,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12189 transitions. [2021-06-12 22:35:55,817 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12189 transitions. Word has length 39 [2021-06-12 22:35:55,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:55,817 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12189 transitions. [2021-06-12 22:35:55,817 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) [2021-06-12 22:35:55,817 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12189 transitions. [2021-06-12 22:35:55,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:55,821 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:55,821 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:55,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-12 22:35:55,822 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:55,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:55,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1793936728, now seen corresponding path program 111 times [2021-06-12 22:35:55,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:55,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145660378] [2021-06-12 22:35:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:55,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:55,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:55,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145660378] [2021-06-12 22:35:55,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145660378] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:55,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:55,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:35:55,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806041328] [2021-06-12 22:35:55,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:35:55,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:55,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:35:55,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:35:55,985 INFO L87 Difference]: Start difference. First operand 3638 states and 12189 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) [2021-06-12 22:35:57,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:57,401 INFO L93 Difference]: Finished difference Result 4183 states and 13831 transitions. [2021-06-12 22:35:57,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-12 22:35:57,401 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 [2021-06-12 22:35:57,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:57,407 INFO L225 Difference]: With dead ends: 4183 [2021-06-12 22:35:57,408 INFO L226 Difference]: Without dead ends: 4140 [2021-06-12 22:35:57,408 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 932.6ms TimeCoverageRelationStatistics Valid=311, Invalid=2995, Unknown=0, NotChecked=0, Total=3306 [2021-06-12 22:35:57,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2021-06-12 22:35:57,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3646. [2021-06-12 22:35:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.349519890260631) internal successors, (12209), 3645 states have internal predecessors, (12209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:35:57,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12209 transitions. [2021-06-12 22:35:57,457 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12209 transitions. Word has length 39 [2021-06-12 22:35:57,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:57,457 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12209 transitions. [2021-06-12 22:35:57,457 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) [2021-06-12 22:35:57,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12209 transitions. [2021-06-12 22:35:57,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:57,461 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:57,461 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:57,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-12 22:35:57,461 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:57,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:57,461 INFO L82 PathProgramCache]: Analyzing trace with hash 13338426, now seen corresponding path program 112 times [2021-06-12 22:35:57,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:57,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66498761] [2021-06-12 22:35:57,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:57,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:57,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:57,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66498761] [2021-06-12 22:35:57,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66498761] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:57,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:57,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:35:57,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518998714] [2021-06-12 22:35:57,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:35:57,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:57,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:35:57,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:35:57,621 INFO L87 Difference]: Start difference. First operand 3646 states and 12209 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) [2021-06-12 22:35:58,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:35:58,995 INFO L93 Difference]: Finished difference Result 4171 states and 13793 transitions. [2021-06-12 22:35:58,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-12 22:35:58,995 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 [2021-06-12 22:35:58,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:35:59,002 INFO L225 Difference]: With dead ends: 4171 [2021-06-12 22:35:59,002 INFO L226 Difference]: Without dead ends: 4119 [2021-06-12 22:35:59,002 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 921.9ms TimeCoverageRelationStatistics Valid=303, Invalid=2889, Unknown=0, NotChecked=0, Total=3192 [2021-06-12 22:35:59,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2021-06-12 22:35:59,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 3638. [2021-06-12 22:35:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.351388507011273) internal successors, (12189), 3637 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) [2021-06-12 22:35:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12189 transitions. [2021-06-12 22:35:59,050 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12189 transitions. Word has length 39 [2021-06-12 22:35:59,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:35:59,051 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12189 transitions. [2021-06-12 22:35:59,051 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) [2021-06-12 22:35:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12189 transitions. [2021-06-12 22:35:59,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:35:59,055 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:35:59,055 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:35:59,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-12 22:35:59,055 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:35:59,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:35:59,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1582546998, now seen corresponding path program 113 times [2021-06-12 22:35:59,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:35:59,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872320231] [2021-06-12 22:35:59,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:35:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:35:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:35:59,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:35:59,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872320231] [2021-06-12 22:35:59,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872320231] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:35:59,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:35:59,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:35:59,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439523887] [2021-06-12 22:35:59,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:35:59,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:35:59,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:35:59,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:35:59,215 INFO L87 Difference]: Start difference. First operand 3638 states and 12189 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) [2021-06-12 22:36:00,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:00,313 INFO L93 Difference]: Finished difference Result 4136 states and 13684 transitions. [2021-06-12 22:36:00,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-12 22:36:00,314 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 [2021-06-12 22:36:00,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:00,320 INFO L225 Difference]: With dead ends: 4136 [2021-06-12 22:36:00,320 INFO L226 Difference]: Without dead ends: 4081 [2021-06-12 22:36:00,320 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 716.4ms TimeCoverageRelationStatistics Valid=239, Invalid=2113, Unknown=0, NotChecked=0, Total=2352 [2021-06-12 22:36:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2021-06-12 22:36:00,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 3640. [2021-06-12 22:36:00,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.350370981038747) internal successors, (12192), 3639 states have internal predecessors, (12192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:00,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12192 transitions. [2021-06-12 22:36:00,364 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12192 transitions. Word has length 39 [2021-06-12 22:36:00,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:00,364 INFO L482 AbstractCegarLoop]: Abstraction has 3640 states and 12192 transitions. [2021-06-12 22:36:00,364 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) [2021-06-12 22:36:00,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12192 transitions. [2021-06-12 22:36:00,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:00,368 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:00,368 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:00,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-12 22:36:00,368 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:00,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:00,369 INFO L82 PathProgramCache]: Analyzing trace with hash -409894776, now seen corresponding path program 114 times [2021-06-12 22:36:00,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:00,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815377258] [2021-06-12 22:36:00,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:00,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:00,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:00,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815377258] [2021-06-12 22:36:00,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815377258] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:00,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:00,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:00,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897609141] [2021-06-12 22:36:00,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:00,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:00,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:00,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:00,529 INFO L87 Difference]: Start difference. First operand 3640 states and 12192 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) [2021-06-12 22:36:01,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:01,553 INFO L93 Difference]: Finished difference Result 4046 states and 13486 transitions. [2021-06-12 22:36:01,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-12 22:36:01,554 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 [2021-06-12 22:36:01,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:01,560 INFO L225 Difference]: With dead ends: 4046 [2021-06-12 22:36:01,561 INFO L226 Difference]: Without dead ends: 3982 [2021-06-12 22:36:01,561 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 657.9ms TimeCoverageRelationStatistics Valid=224, Invalid=1938, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:36:01,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2021-06-12 22:36:01,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 3634. [2021-06-12 22:36:01,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 3.3523259014588493) internal successors, (12179), 3633 states have internal predecessors, (12179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:01,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 12179 transitions. [2021-06-12 22:36:01,606 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 12179 transitions. Word has length 39 [2021-06-12 22:36:01,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:01,607 INFO L482 AbstractCegarLoop]: Abstraction has 3634 states and 12179 transitions. [2021-06-12 22:36:01,607 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) [2021-06-12 22:36:01,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 12179 transitions. [2021-06-12 22:36:01,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:01,610 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:01,610 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:01,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-12 22:36:01,610 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:01,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:01,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1832153546, now seen corresponding path program 115 times [2021-06-12 22:36:01,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:01,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007572255] [2021-06-12 22:36:01,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:01,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:01,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007572255] [2021-06-12 22:36:01,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007572255] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:01,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:01,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:01,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175968204] [2021-06-12 22:36:01,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:01,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:01,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:01,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:01,796 INFO L87 Difference]: Start difference. First operand 3634 states and 12179 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) [2021-06-12 22:36:03,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:03,359 INFO L93 Difference]: Finished difference Result 4309 states and 14218 transitions. [2021-06-12 22:36:03,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-12 22:36:03,359 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 [2021-06-12 22:36:03,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:03,365 INFO L225 Difference]: With dead ends: 4309 [2021-06-12 22:36:03,365 INFO L226 Difference]: Without dead ends: 4172 [2021-06-12 22:36:03,366 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 1001.7ms TimeCoverageRelationStatistics Valid=314, Invalid=3226, Unknown=0, NotChecked=0, Total=3540 [2021-06-12 22:36:03,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-06-12 22:36:03,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3638. [2021-06-12 22:36:03,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.351388507011273) internal successors, (12189), 3637 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) [2021-06-12 22:36:03,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12189 transitions. [2021-06-12 22:36:03,430 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12189 transitions. Word has length 39 [2021-06-12 22:36:03,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:03,430 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12189 transitions. [2021-06-12 22:36:03,430 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) [2021-06-12 22:36:03,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12189 transitions. [2021-06-12 22:36:03,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:03,434 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:03,434 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:03,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-12 22:36:03,434 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:03,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:03,434 INFO L82 PathProgramCache]: Analyzing trace with hash 337262646, now seen corresponding path program 116 times [2021-06-12 22:36:03,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:03,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505252276] [2021-06-12 22:36:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:03,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:03,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:03,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505252276] [2021-06-12 22:36:03,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505252276] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:03,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:03,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:03,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784942906] [2021-06-12 22:36:03,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:03,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:03,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:03,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:03,597 INFO L87 Difference]: Start difference. First operand 3638 states and 12189 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) [2021-06-12 22:36:04,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:04,956 INFO L93 Difference]: Finished difference Result 4287 states and 14084 transitions. [2021-06-12 22:36:04,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-12 22:36:04,957 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 [2021-06-12 22:36:04,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:04,963 INFO L225 Difference]: With dead ends: 4287 [2021-06-12 22:36:04,963 INFO L226 Difference]: Without dead ends: 4223 [2021-06-12 22:36:04,963 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 899.4ms TimeCoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2021-06-12 22:36:04,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2021-06-12 22:36:05,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 3638. [2021-06-12 22:36:05,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.351388507011273) internal successors, (12189), 3637 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) [2021-06-12 22:36:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12189 transitions. [2021-06-12 22:36:05,026 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12189 transitions. Word has length 39 [2021-06-12 22:36:05,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:05,026 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12189 transitions. [2021-06-12 22:36:05,026 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) [2021-06-12 22:36:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12189 transitions. [2021-06-12 22:36:05,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:05,030 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:05,030 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:05,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-12 22:36:05,030 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:05,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:05,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1255746216, now seen corresponding path program 117 times [2021-06-12 22:36:05,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:05,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875024272] [2021-06-12 22:36:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:05,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:05,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875024272] [2021-06-12 22:36:05,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875024272] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:05,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:05,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:05,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22186380] [2021-06-12 22:36:05,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:05,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:05,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:05,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:05,192 INFO L87 Difference]: Start difference. First operand 3638 states and 12189 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) [2021-06-12 22:36:06,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:06,252 INFO L93 Difference]: Finished difference Result 4192 states and 13832 transitions. [2021-06-12 22:36:06,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-12 22:36:06,253 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 [2021-06-12 22:36:06,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:06,260 INFO L225 Difference]: With dead ends: 4192 [2021-06-12 22:36:06,260 INFO L226 Difference]: Without dead ends: 4137 [2021-06-12 22:36:06,260 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 662.9ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:36:06,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2021-06-12 22:36:06,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 3640. [2021-06-12 22:36:06,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.350370981038747) internal successors, (12192), 3639 states have internal predecessors, (12192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:06,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12192 transitions. [2021-06-12 22:36:06,308 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12192 transitions. Word has length 39 [2021-06-12 22:36:06,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:06,308 INFO L482 AbstractCegarLoop]: Abstraction has 3640 states and 12192 transitions. [2021-06-12 22:36:06,308 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) [2021-06-12 22:36:06,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12192 transitions. [2021-06-12 22:36:06,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:06,312 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:06,312 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:06,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-12 22:36:06,312 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:06,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:06,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1866568858, now seen corresponding path program 118 times [2021-06-12 22:36:06,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:06,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827730203] [2021-06-12 22:36:06,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:06,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:06,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827730203] [2021-06-12 22:36:06,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827730203] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:06,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:06,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:06,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019524800] [2021-06-12 22:36:06,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:06,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:06,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:06,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:06,475 INFO L87 Difference]: Start difference. First operand 3640 states and 12192 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) [2021-06-12 22:36:07,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:07,566 INFO L93 Difference]: Finished difference Result 4162 states and 13771 transitions. [2021-06-12 22:36:07,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:36:07,566 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 [2021-06-12 22:36:07,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:07,573 INFO L225 Difference]: With dead ends: 4162 [2021-06-12 22:36:07,573 INFO L226 Difference]: Without dead ends: 4102 [2021-06-12 22:36:07,574 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 689.7ms TimeCoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:36:07,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2021-06-12 22:36:07,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 3638. [2021-06-12 22:36:07,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.350838603244432) internal successors, (12187), 3637 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) [2021-06-12 22:36:07,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12187 transitions. [2021-06-12 22:36:07,623 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12187 transitions. Word has length 39 [2021-06-12 22:36:07,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:07,623 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12187 transitions. [2021-06-12 22:36:07,623 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) [2021-06-12 22:36:07,624 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12187 transitions. [2021-06-12 22:36:07,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:07,628 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:07,628 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:07,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-12 22:36:07,628 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:07,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:07,628 INFO L82 PathProgramCache]: Analyzing trace with hash 348831896, now seen corresponding path program 119 times [2021-06-12 22:36:07,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:07,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747043317] [2021-06-12 22:36:07,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:07,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:07,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747043317] [2021-06-12 22:36:07,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747043317] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:07,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:07,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:36:07,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962627871] [2021-06-12 22:36:07,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:36:07,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:07,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:36:07,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:36:07,796 INFO L87 Difference]: Start difference. First operand 3638 states and 12187 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) [2021-06-12 22:36:08,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:08,746 INFO L93 Difference]: Finished difference Result 4073 states and 13558 transitions. [2021-06-12 22:36:08,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-12 22:36:08,747 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 [2021-06-12 22:36:08,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:08,753 INFO L225 Difference]: With dead ends: 4073 [2021-06-12 22:36:08,753 INFO L226 Difference]: Without dead ends: 3997 [2021-06-12 22:36:08,753 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 621.0ms TimeCoverageRelationStatistics Valid=199, Invalid=1693, Unknown=0, NotChecked=0, Total=1892 [2021-06-12 22:36:08,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2021-06-12 22:36:08,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3646. [2021-06-12 22:36:08,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3478737997256514) internal successors, (12203), 3645 states have internal predecessors, (12203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12203 transitions. [2021-06-12 22:36:08,801 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12203 transitions. Word has length 39 [2021-06-12 22:36:08,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:08,801 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12203 transitions. [2021-06-12 22:36:08,802 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) [2021-06-12 22:36:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12203 transitions. [2021-06-12 22:36:08,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:08,806 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:08,806 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:08,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-12 22:36:08,806 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:08,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:08,806 INFO L82 PathProgramCache]: Analyzing trace with hash -669221716, now seen corresponding path program 120 times [2021-06-12 22:36:08,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:08,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29715521] [2021-06-12 22:36:08,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:08,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:08,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29715521] [2021-06-12 22:36:08,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29715521] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:08,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:08,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:08,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001020516] [2021-06-12 22:36:08,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:08,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:08,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:08,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:08,966 INFO L87 Difference]: Start difference. First operand 3646 states and 12203 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) [2021-06-12 22:36:10,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:10,004 INFO L93 Difference]: Finished difference Result 4055 states and 13504 transitions. [2021-06-12 22:36:10,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:36:10,005 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 [2021-06-12 22:36:10,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:10,010 INFO L225 Difference]: With dead ends: 4055 [2021-06-12 22:36:10,011 INFO L226 Difference]: Without dead ends: 3977 [2021-06-12 22:36:10,011 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 675.2ms TimeCoverageRelationStatistics Valid=215, Invalid=1947, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:36:10,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2021-06-12 22:36:10,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3626. [2021-06-12 22:36:10,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3625 states have (on average 3.353103448275862) internal successors, (12155), 3625 states have internal predecessors, (12155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12155 transitions. [2021-06-12 22:36:10,055 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12155 transitions. Word has length 39 [2021-06-12 22:36:10,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:10,055 INFO L482 AbstractCegarLoop]: Abstraction has 3626 states and 12155 transitions. [2021-06-12 22:36:10,055 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) [2021-06-12 22:36:10,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12155 transitions. [2021-06-12 22:36:10,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:10,059 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:10,059 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:10,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-12 22:36:10,059 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:10,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:10,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1377688110, now seen corresponding path program 121 times [2021-06-12 22:36:10,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:10,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347633254] [2021-06-12 22:36:10,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:10,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:10,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347633254] [2021-06-12 22:36:10,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347633254] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:10,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:10,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:10,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627296363] [2021-06-12 22:36:10,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:10,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:10,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:10,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:10,221 INFO L87 Difference]: Start difference. First operand 3626 states and 12155 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) [2021-06-12 22:36:11,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:11,425 INFO L93 Difference]: Finished difference Result 4269 states and 14190 transitions. [2021-06-12 22:36:11,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-12 22:36:11,425 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 [2021-06-12 22:36:11,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:11,432 INFO L225 Difference]: With dead ends: 4269 [2021-06-12 22:36:11,432 INFO L226 Difference]: Without dead ends: 4202 [2021-06-12 22:36:11,432 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 717.2ms TimeCoverageRelationStatistics Valid=243, Invalid=2207, Unknown=0, NotChecked=0, Total=2450 [2021-06-12 22:36:11,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2021-06-12 22:36:11,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 3658. [2021-06-12 22:36:11,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.347826086956522) internal successors, (12243), 3657 states have internal predecessors, (12243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:11,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12243 transitions. [2021-06-12 22:36:11,492 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12243 transitions. Word has length 39 [2021-06-12 22:36:11,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:11,492 INFO L482 AbstractCegarLoop]: Abstraction has 3658 states and 12243 transitions. [2021-06-12 22:36:11,493 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) [2021-06-12 22:36:11,493 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12243 transitions. [2021-06-12 22:36:11,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:11,496 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:11,496 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:11,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-12 22:36:11,496 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:11,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:11,497 INFO L82 PathProgramCache]: Analyzing trace with hash -504725972, now seen corresponding path program 122 times [2021-06-12 22:36:11,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:11,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388863401] [2021-06-12 22:36:11,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:11,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:11,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:11,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388863401] [2021-06-12 22:36:11,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388863401] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:11,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:11,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:11,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061756130] [2021-06-12 22:36:11,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:11,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:11,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:11,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:11,658 INFO L87 Difference]: Start difference. First operand 3658 states and 12243 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) [2021-06-12 22:36:13,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:13,224 INFO L93 Difference]: Finished difference Result 4406 states and 14547 transitions. [2021-06-12 22:36:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-12 22:36:13,224 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 [2021-06-12 22:36:13,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:13,230 INFO L225 Difference]: With dead ends: 4406 [2021-06-12 22:36:13,230 INFO L226 Difference]: Without dead ends: 4363 [2021-06-12 22:36:13,230 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 980.6ms TimeCoverageRelationStatistics Valid=323, Invalid=3217, Unknown=0, NotChecked=0, Total=3540 [2021-06-12 22:36:13,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4363 states. [2021-06-12 22:36:13,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4363 to 3664. [2021-06-12 22:36:13,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3663 states have (on average 3.3458913458913457) internal successors, (12256), 3663 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) [2021-06-12 22:36:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 12256 transitions. [2021-06-12 22:36:13,275 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 12256 transitions. Word has length 39 [2021-06-12 22:36:13,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:13,275 INFO L482 AbstractCegarLoop]: Abstraction has 3664 states and 12256 transitions. [2021-06-12 22:36:13,276 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) [2021-06-12 22:36:13,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 12256 transitions. [2021-06-12 22:36:13,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:13,279 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:13,279 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:13,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-12 22:36:13,279 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:13,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:13,280 INFO L82 PathProgramCache]: Analyzing trace with hash 2009643022, now seen corresponding path program 123 times [2021-06-12 22:36:13,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:13,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145097399] [2021-06-12 22:36:13,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:13,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:13,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145097399] [2021-06-12 22:36:13,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145097399] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:13,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:13,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:13,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330863361] [2021-06-12 22:36:13,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:13,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:13,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:13,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:13,452 INFO L87 Difference]: Start difference. First operand 3664 states and 12256 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) [2021-06-12 22:36:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:14,954 INFO L93 Difference]: Finished difference Result 4337 states and 14367 transitions. [2021-06-12 22:36:14,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-12 22:36:14,954 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 [2021-06-12 22:36:14,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:14,960 INFO L225 Difference]: With dead ends: 4337 [2021-06-12 22:36:14,961 INFO L226 Difference]: Without dead ends: 4273 [2021-06-12 22:36:14,961 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 951.7ms TimeCoverageRelationStatistics Valid=305, Invalid=3001, Unknown=0, NotChecked=0, Total=3306 [2021-06-12 22:36:14,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4273 states. [2021-06-12 22:36:14,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4273 to 3646. [2021-06-12 22:36:15,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3506172839506174) internal successors, (12213), 3645 states have internal predecessors, (12213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:15,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12213 transitions. [2021-06-12 22:36:15,006 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12213 transitions. Word has length 39 [2021-06-12 22:36:15,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:15,006 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12213 transitions. [2021-06-12 22:36:15,006 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) [2021-06-12 22:36:15,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12213 transitions. [2021-06-12 22:36:15,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:15,010 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:15,010 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:15,010 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-06-12 22:36:15,010 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:15,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:15,011 INFO L82 PathProgramCache]: Analyzing trace with hash -722864096, now seen corresponding path program 124 times [2021-06-12 22:36:15,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:15,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296163683] [2021-06-12 22:36:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:15,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:15,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:15,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296163683] [2021-06-12 22:36:15,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296163683] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:15,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:15,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:15,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41176585] [2021-06-12 22:36:15,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:15,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:15,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:15,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:15,176 INFO L87 Difference]: Start difference. First operand 3646 states and 12213 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) [2021-06-12 22:36:16,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:16,178 INFO L93 Difference]: Finished difference Result 4217 states and 14012 transitions. [2021-06-12 22:36:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:36:16,178 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 [2021-06-12 22:36:16,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:16,185 INFO L225 Difference]: With dead ends: 4217 [2021-06-12 22:36:16,185 INFO L226 Difference]: Without dead ends: 4150 [2021-06-12 22:36:16,185 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 594.4ms TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2021-06-12 22:36:16,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4150 states. [2021-06-12 22:36:16,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4150 to 3654. [2021-06-12 22:36:16,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3653 states have (on average 3.3476594579797427) internal successors, (12229), 3653 states have internal predecessors, (12229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 12229 transitions. [2021-06-12 22:36:16,252 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 12229 transitions. Word has length 39 [2021-06-12 22:36:16,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:16,252 INFO L482 AbstractCegarLoop]: Abstraction has 3654 states and 12229 transitions. [2021-06-12 22:36:16,252 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) [2021-06-12 22:36:16,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 12229 transitions. [2021-06-12 22:36:16,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:16,256 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:16,256 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:16,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-06-12 22:36:16,256 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:16,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:16,257 INFO L82 PathProgramCache]: Analyzing trace with hash -895007314, now seen corresponding path program 125 times [2021-06-12 22:36:16,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:16,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226613717] [2021-06-12 22:36:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:16,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:16,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226613717] [2021-06-12 22:36:16,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226613717] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:16,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:16,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:16,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120901557] [2021-06-12 22:36:16,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:16,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:16,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:16,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:16,417 INFO L87 Difference]: Start difference. First operand 3654 states and 12229 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) [2021-06-12 22:36:17,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:17,499 INFO L93 Difference]: Finished difference Result 4205 states and 13972 transitions. [2021-06-12 22:36:17,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-12 22:36:17,500 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 [2021-06-12 22:36:17,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:17,506 INFO L225 Difference]: With dead ends: 4205 [2021-06-12 22:36:17,506 INFO L226 Difference]: Without dead ends: 4142 [2021-06-12 22:36:17,506 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 642.2ms TimeCoverageRelationStatistics Valid=217, Invalid=1945, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:36:17,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states. [2021-06-12 22:36:17,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 3646. [2021-06-12 22:36:17,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.349519890260631) internal successors, (12209), 3645 states have internal predecessors, (12209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:17,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12209 transitions. [2021-06-12 22:36:17,552 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12209 transitions. Word has length 39 [2021-06-12 22:36:17,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:17,552 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12209 transitions. [2021-06-12 22:36:17,552 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) [2021-06-12 22:36:17,552 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12209 transitions. [2021-06-12 22:36:17,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:17,556 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:17,556 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:17,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-06-12 22:36:17,556 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:17,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:17,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1931163314, now seen corresponding path program 126 times [2021-06-12 22:36:17,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:17,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150982451] [2021-06-12 22:36:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:17,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:17,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:17,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150982451] [2021-06-12 22:36:17,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150982451] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:17,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:17,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:17,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792154628] [2021-06-12 22:36:17,716 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:17,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:17,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:17,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:17,716 INFO L87 Difference]: Start difference. First operand 3646 states and 12209 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) [2021-06-12 22:36:19,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:19,102 INFO L93 Difference]: Finished difference Result 4360 states and 14335 transitions. [2021-06-12 22:36:19,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-12 22:36:19,102 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 [2021-06-12 22:36:19,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:19,108 INFO L225 Difference]: With dead ends: 4360 [2021-06-12 22:36:19,108 INFO L226 Difference]: Without dead ends: 4317 [2021-06-12 22:36:19,109 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 875.7ms TimeCoverageRelationStatistics Valid=294, Invalid=2786, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:36:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4317 states. [2021-06-12 22:36:19,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4317 to 3654. [2021-06-12 22:36:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3653 states have (on average 3.3476594579797427) internal successors, (12229), 3653 states have internal predecessors, (12229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:19,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 12229 transitions. [2021-06-12 22:36:19,155 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 12229 transitions. Word has length 39 [2021-06-12 22:36:19,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:19,155 INFO L482 AbstractCegarLoop]: Abstraction has 3654 states and 12229 transitions. [2021-06-12 22:36:19,155 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) [2021-06-12 22:36:19,155 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 12229 transitions. [2021-06-12 22:36:19,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:19,159 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:19,159 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:19,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-06-12 22:36:19,159 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:19,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:19,159 INFO L82 PathProgramCache]: Analyzing trace with hash 583205680, now seen corresponding path program 127 times [2021-06-12 22:36:19,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:19,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799527309] [2021-06-12 22:36:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:19,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:19,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799527309] [2021-06-12 22:36:19,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799527309] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:19,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:19,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:19,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413474124] [2021-06-12 22:36:19,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:19,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:19,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:19,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:19,322 INFO L87 Difference]: Start difference. First operand 3654 states and 12229 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) [2021-06-12 22:36:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:20,704 INFO L93 Difference]: Finished difference Result 4348 states and 14297 transitions. [2021-06-12 22:36:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-12 22:36:20,704 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 [2021-06-12 22:36:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:20,710 INFO L225 Difference]: With dead ends: 4348 [2021-06-12 22:36:20,710 INFO L226 Difference]: Without dead ends: 4296 [2021-06-12 22:36:20,711 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 871.0ms TimeCoverageRelationStatistics Valid=286, Invalid=2684, Unknown=0, NotChecked=0, Total=2970 [2021-06-12 22:36:20,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4296 states. [2021-06-12 22:36:20,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4296 to 3646. [2021-06-12 22:36:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.349519890260631) internal successors, (12209), 3645 states have internal predecessors, (12209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:20,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12209 transitions. [2021-06-12 22:36:20,757 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12209 transitions. Word has length 39 [2021-06-12 22:36:20,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:20,757 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12209 transitions. [2021-06-12 22:36:20,757 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) [2021-06-12 22:36:20,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12209 transitions. [2021-06-12 22:36:20,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:20,761 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:20,761 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:20,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-06-12 22:36:20,761 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:20,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:20,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1012679744, now seen corresponding path program 128 times [2021-06-12 22:36:20,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:20,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78335780] [2021-06-12 22:36:20,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:20,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:20,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78335780] [2021-06-12 22:36:20,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78335780] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:20,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:20,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:20,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794929036] [2021-06-12 22:36:20,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:20,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:20,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:20,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:20,927 INFO L87 Difference]: Start difference. First operand 3646 states and 12209 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) [2021-06-12 22:36:22,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:22,067 INFO L93 Difference]: Finished difference Result 4325 states and 14220 transitions. [2021-06-12 22:36:22,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-12 22:36:22,067 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 [2021-06-12 22:36:22,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:22,074 INFO L225 Difference]: With dead ends: 4325 [2021-06-12 22:36:22,074 INFO L226 Difference]: Without dead ends: 4270 [2021-06-12 22:36:22,074 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 692.9ms TimeCoverageRelationStatistics Valid=233, Invalid=2023, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:36:22,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2021-06-12 22:36:22,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 3648. [2021-06-12 22:36:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.348505621058404) internal successors, (12212), 3647 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) [2021-06-12 22:36:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12212 transitions. [2021-06-12 22:36:22,121 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12212 transitions. Word has length 39 [2021-06-12 22:36:22,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:22,121 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 12212 transitions. [2021-06-12 22:36:22,121 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) [2021-06-12 22:36:22,121 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12212 transitions. [2021-06-12 22:36:22,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:22,125 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:22,125 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:22,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-06-12 22:36:22,125 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:22,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:22,126 INFO L82 PathProgramCache]: Analyzing trace with hash 159972478, now seen corresponding path program 129 times [2021-06-12 22:36:22,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:22,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352709604] [2021-06-12 22:36:22,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:22,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:22,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352709604] [2021-06-12 22:36:22,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352709604] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:22,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:22,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:22,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810123914] [2021-06-12 22:36:22,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:22,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:22,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:22,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:22,286 INFO L87 Difference]: Start difference. First operand 3648 states and 12212 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) [2021-06-12 22:36:23,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:23,306 INFO L93 Difference]: Finished difference Result 4260 states and 14068 transitions. [2021-06-12 22:36:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:36:23,306 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 [2021-06-12 22:36:23,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:23,313 INFO L225 Difference]: With dead ends: 4260 [2021-06-12 22:36:23,313 INFO L226 Difference]: Without dead ends: 4214 [2021-06-12 22:36:23,313 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 622.5ms TimeCoverageRelationStatistics Valid=208, Invalid=1772, Unknown=0, NotChecked=0, Total=1980 [2021-06-12 22:36:23,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2021-06-12 22:36:23,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 3652. [2021-06-12 22:36:23,354 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) [2021-06-12 22:36:23,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 12220 transitions. [2021-06-12 22:36:23,359 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 12220 transitions. Word has length 39 [2021-06-12 22:36:23,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:23,359 INFO L482 AbstractCegarLoop]: Abstraction has 3652 states and 12220 transitions. [2021-06-12 22:36:23,359 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) [2021-06-12 22:36:23,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 12220 transitions. [2021-06-12 22:36:23,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:23,363 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:23,363 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:23,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-06-12 22:36:23,363 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:23,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:23,363 INFO L82 PathProgramCache]: Analyzing trace with hash -87493684, now seen corresponding path program 130 times [2021-06-12 22:36:23,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:23,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45730362] [2021-06-12 22:36:23,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:23,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:23,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45730362] [2021-06-12 22:36:23,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45730362] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:23,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:23,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:23,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310149694] [2021-06-12 22:36:23,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:23,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:23,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:23,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:23,523 INFO L87 Difference]: Start difference. First operand 3652 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) [2021-06-12 22:36:24,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:24,770 INFO L93 Difference]: Finished difference Result 4252 states and 14081 transitions. [2021-06-12 22:36:24,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:36:24,771 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 [2021-06-12 22:36:24,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:24,777 INFO L225 Difference]: With dead ends: 4252 [2021-06-12 22:36:24,777 INFO L226 Difference]: Without dead ends: 4203 [2021-06-12 22:36:24,777 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 799.7ms TimeCoverageRelationStatistics Valid=257, Invalid=2293, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:36:24,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4203 states. [2021-06-12 22:36:24,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4203 to 3642. [2021-06-12 22:36:24,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3641 states have (on average 3.3504531722054383) internal successors, (12199), 3641 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) [2021-06-12 22:36:24,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12199 transitions. [2021-06-12 22:36:24,822 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12199 transitions. Word has length 39 [2021-06-12 22:36:24,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:24,822 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12199 transitions. [2021-06-12 22:36:24,822 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) [2021-06-12 22:36:24,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12199 transitions. [2021-06-12 22:36:24,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:24,826 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:24,826 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:24,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-06-12 22:36:24,826 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:24,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:24,826 INFO L82 PathProgramCache]: Analyzing trace with hash 615892492, now seen corresponding path program 131 times [2021-06-12 22:36:24,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:24,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753849011] [2021-06-12 22:36:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:24,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:24,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:24,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753849011] [2021-06-12 22:36:24,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753849011] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:24,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:24,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:24,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027382810] [2021-06-12 22:36:24,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:24,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:24,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:24,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:24,979 INFO L87 Difference]: Start difference. First operand 3642 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) [2021-06-12 22:36:25,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:25,957 INFO L93 Difference]: Finished difference Result 4189 states and 13952 transitions. [2021-06-12 22:36:25,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-12 22:36:25,957 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 [2021-06-12 22:36:25,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:25,964 INFO L225 Difference]: With dead ends: 4189 [2021-06-12 22:36:25,964 INFO L226 Difference]: Without dead ends: 4122 [2021-06-12 22:36:25,964 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 535.5ms TimeCoverageRelationStatistics Valid=177, Invalid=1545, Unknown=0, NotChecked=0, Total=1722 [2021-06-12 22:36:25,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2021-06-12 22:36:26,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 3682. [2021-06-12 22:36:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3682 states, 3681 states have (on average 3.343384949741918) internal successors, (12307), 3681 states have internal predecessors, (12307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:26,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 12307 transitions. [2021-06-12 22:36:26,024 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 12307 transitions. Word has length 39 [2021-06-12 22:36:26,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:26,024 INFO L482 AbstractCegarLoop]: Abstraction has 3682 states and 12307 transitions. [2021-06-12 22:36:26,024 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) [2021-06-12 22:36:26,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 12307 transitions. [2021-06-12 22:36:26,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:26,028 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:26,028 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:26,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-06-12 22:36:26,028 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:26,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:26,029 INFO L82 PathProgramCache]: Analyzing trace with hash 443749274, now seen corresponding path program 132 times [2021-06-12 22:36:26,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:26,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637471512] [2021-06-12 22:36:26,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:26,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:26,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:26,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637471512] [2021-06-12 22:36:26,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637471512] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:26,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:26,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:26,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431469755] [2021-06-12 22:36:26,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:26,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:26,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:26,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:26,211 INFO L87 Difference]: Start difference. First operand 3682 states and 12307 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) [2021-06-12 22:36:27,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:27,253 INFO L93 Difference]: Finished difference Result 4177 states and 13912 transitions. [2021-06-12 22:36:27,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-12 22:36:27,254 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 [2021-06-12 22:36:27,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:27,260 INFO L225 Difference]: With dead ends: 4177 [2021-06-12 22:36:27,260 INFO L226 Difference]: Without dead ends: 4114 [2021-06-12 22:36:27,261 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 594.6ms TimeCoverageRelationStatistics Valid=185, Invalid=1621, Unknown=0, NotChecked=0, Total=1806 [2021-06-12 22:36:27,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4114 states. [2021-06-12 22:36:27,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4114 to 3674. [2021-06-12 22:36:27,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 3673 states have (on average 3.3441328614211816) internal successors, (12283), 3673 states have internal predecessors, (12283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:27,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 12283 transitions. [2021-06-12 22:36:27,310 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 12283 transitions. Word has length 39 [2021-06-12 22:36:27,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:27,310 INFO L482 AbstractCegarLoop]: Abstraction has 3674 states and 12283 transitions. [2021-06-12 22:36:27,310 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) [2021-06-12 22:36:27,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 12283 transitions. [2021-06-12 22:36:27,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:27,314 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:27,315 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:27,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-06-12 22:36:27,315 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:27,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:27,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1359084882, now seen corresponding path program 133 times [2021-06-12 22:36:27,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:27,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541804987] [2021-06-12 22:36:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:27,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:27,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:27,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541804987] [2021-06-12 22:36:27,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541804987] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:27,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:27,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:27,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715365226] [2021-06-12 22:36:27,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:27,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:27,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:27,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:27,479 INFO L87 Difference]: Start difference. First operand 3674 states and 12283 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) [2021-06-12 22:36:28,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:28,521 INFO L93 Difference]: Finished difference Result 4177 states and 13904 transitions. [2021-06-12 22:36:28,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-12 22:36:28,522 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 [2021-06-12 22:36:28,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:28,529 INFO L225 Difference]: With dead ends: 4177 [2021-06-12 22:36:28,529 INFO L226 Difference]: Without dead ends: 4038 [2021-06-12 22:36:28,529 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 583.6ms TimeCoverageRelationStatistics Valid=191, Invalid=1701, Unknown=0, NotChecked=0, Total=1892 [2021-06-12 22:36:28,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4038 states. [2021-06-12 22:36:28,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4038 to 3626. [2021-06-12 22:36:28,572 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) [2021-06-12 22:36:28,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12139 transitions. [2021-06-12 22:36:28,578 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12139 transitions. Word has length 39 [2021-06-12 22:36:28,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:28,578 INFO L482 AbstractCegarLoop]: Abstraction has 3626 states and 12139 transitions. [2021-06-12 22:36:28,578 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) [2021-06-12 22:36:28,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12139 transitions. [2021-06-12 22:36:28,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:28,582 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:28,582 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:28,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-06-12 22:36:28,582 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:28,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:28,582 INFO L82 PathProgramCache]: Analyzing trace with hash -479556628, now seen corresponding path program 134 times [2021-06-12 22:36:28,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:28,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002345610] [2021-06-12 22:36:28,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:28,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:28,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:28,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002345610] [2021-06-12 22:36:28,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002345610] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:28,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:28,745 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:28,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393438174] [2021-06-12 22:36:28,745 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:28,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:28,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:28,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:28,746 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) [2021-06-12 22:36:30,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:30,236 INFO L93 Difference]: Finished difference Result 4276 states and 14125 transitions. [2021-06-12 22:36:30,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-12 22:36:30,237 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 [2021-06-12 22:36:30,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:30,243 INFO L225 Difference]: With dead ends: 4276 [2021-06-12 22:36:30,243 INFO L226 Difference]: Without dead ends: 4170 [2021-06-12 22:36:30,243 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 923.5ms TimeCoverageRelationStatistics Valid=284, Invalid=2908, Unknown=0, NotChecked=0, Total=3192 [2021-06-12 22:36:30,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-06-12 22:36:30,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3642. [2021-06-12 22:36:30,283 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) [2021-06-12 22:36:30,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12185 transitions. [2021-06-12 22:36:30,288 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12185 transitions. Word has length 39 [2021-06-12 22:36:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:30,288 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12185 transitions. [2021-06-12 22:36:30,289 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) [2021-06-12 22:36:30,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12185 transitions. [2021-06-12 22:36:30,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:30,292 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:30,292 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:30,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-06-12 22:36:30,292 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:30,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:30,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1974447528, now seen corresponding path program 135 times [2021-06-12 22:36:30,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:30,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592550454] [2021-06-12 22:36:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:30,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:30,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:30,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592550454] [2021-06-12 22:36:30,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592550454] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:30,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:30,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:30,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087182188] [2021-06-12 22:36:30,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:30,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:30,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:30,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:30,475 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) [2021-06-12 22:36:31,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:31,865 INFO L93 Difference]: Finished difference Result 4285 states and 14055 transitions. [2021-06-12 22:36:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-12 22:36:31,865 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 [2021-06-12 22:36:31,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:31,871 INFO L225 Difference]: With dead ends: 4285 [2021-06-12 22:36:31,871 INFO L226 Difference]: Without dead ends: 4221 [2021-06-12 22:36:31,871 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 888.4ms TimeCoverageRelationStatistics Valid=283, Invalid=2797, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:36:31,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2021-06-12 22:36:31,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 3642. [2021-06-12 22:36:31,912 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) [2021-06-12 22:36:31,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12185 transitions. [2021-06-12 22:36:31,917 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12185 transitions. Word has length 39 [2021-06-12 22:36:31,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:31,917 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12185 transitions. [2021-06-12 22:36:31,917 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) [2021-06-12 22:36:31,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12185 transitions. [2021-06-12 22:36:31,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:31,921 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:31,921 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:31,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-06-12 22:36:31,921 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:31,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:31,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1055963958, now seen corresponding path program 136 times [2021-06-12 22:36:31,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:31,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612960309] [2021-06-12 22:36:31,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:32,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:32,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612960309] [2021-06-12 22:36:32,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612960309] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:32,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:32,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:32,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723415229] [2021-06-12 22:36:32,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:32,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:32,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:32,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:32,078 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) [2021-06-12 22:36:33,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:33,059 INFO L93 Difference]: Finished difference Result 4182 states and 13783 transitions. [2021-06-12 22:36:33,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-12 22:36:33,060 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 [2021-06-12 22:36:33,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:33,066 INFO L225 Difference]: With dead ends: 4182 [2021-06-12 22:36:33,066 INFO L226 Difference]: Without dead ends: 4139 [2021-06-12 22:36:33,066 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 601.9ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-06-12 22:36:33,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2021-06-12 22:36:33,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 3648. [2021-06-12 22:36:33,106 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) [2021-06-12 22:36:33,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12198 transitions. [2021-06-12 22:36:33,111 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12198 transitions. Word has length 39 [2021-06-12 22:36:33,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:33,111 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 12198 transitions. [2021-06-12 22:36:33,111 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) [2021-06-12 22:36:33,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12198 transitions. [2021-06-12 22:36:33,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:33,115 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:33,115 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:33,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-06-12 22:36:33,115 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:33,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:33,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1035815224, now seen corresponding path program 137 times [2021-06-12 22:36:33,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:33,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366146308] [2021-06-12 22:36:33,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:33,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:33,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366146308] [2021-06-12 22:36:33,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366146308] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:33,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:33,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:33,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391245903] [2021-06-12 22:36:33,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:33,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:33,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:33,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:33,278 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) [2021-06-12 22:36:34,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:34,348 INFO L93 Difference]: Finished difference Result 4151 states and 13720 transitions. [2021-06-12 22:36:34,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:36:34,349 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 [2021-06-12 22:36:34,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:34,354 INFO L225 Difference]: With dead ends: 4151 [2021-06-12 22:36:34,354 INFO L226 Difference]: Without dead ends: 4108 [2021-06-12 22:36:34,355 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 700.8ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:36:34,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-06-12 22:36:34,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3644. [2021-06-12 22:36:34,393 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) [2021-06-12 22:36:34,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 12188 transitions. [2021-06-12 22:36:34,398 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 12188 transitions. Word has length 39 [2021-06-12 22:36:34,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:34,398 INFO L482 AbstractCegarLoop]: Abstraction has 3644 states and 12188 transitions. [2021-06-12 22:36:34,398 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) [2021-06-12 22:36:34,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 12188 transitions. [2021-06-12 22:36:34,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:34,402 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:34,402 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:34,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-06-12 22:36:34,402 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:34,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:34,403 INFO L82 PathProgramCache]: Analyzing trace with hash 116688264, now seen corresponding path program 138 times [2021-06-12 22:36:34,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:34,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963511541] [2021-06-12 22:36:34,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:34,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:34,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:34,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963511541] [2021-06-12 22:36:34,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963511541] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:34,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:34,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:34,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289279221] [2021-06-12 22:36:34,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:34,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:34,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:34,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:34,563 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) [2021-06-12 22:36:35,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:35,568 INFO L93 Difference]: Finished difference Result 4160 states and 13742 transitions. [2021-06-12 22:36:35,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:36:35,569 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 [2021-06-12 22:36:35,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:35,575 INFO L225 Difference]: With dead ends: 4160 [2021-06-12 22:36:35,575 INFO L226 Difference]: Without dead ends: 4100 [2021-06-12 22:36:35,575 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 644.8ms TimeCoverageRelationStatistics Valid=213, Invalid=1949, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:36:35,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4100 states. [2021-06-12 22:36:35,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4100 to 3642. [2021-06-12 22:36:35,615 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) [2021-06-12 22:36:35,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12183 transitions. [2021-06-12 22:36:35,621 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12183 transitions. Word has length 39 [2021-06-12 22:36:35,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:35,621 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12183 transitions. [2021-06-12 22:36:35,621 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) [2021-06-12 22:36:35,621 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12183 transitions. [2021-06-12 22:36:35,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:35,624 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:35,624 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:35,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-06-12 22:36:35,625 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:35,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:35,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1962878278, now seen corresponding path program 139 times [2021-06-12 22:36:35,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:35,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815990430] [2021-06-12 22:36:35,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:35,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:35,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815990430] [2021-06-12 22:36:35,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815990430] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:35,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:35,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:36:35,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492806876] [2021-06-12 22:36:35,795 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:36:35,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:35,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:36:35,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:36:35,796 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) [2021-06-12 22:36:36,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:36,661 INFO L93 Difference]: Finished difference Result 4128 states and 13682 transitions. [2021-06-12 22:36:36,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-12 22:36:36,662 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 [2021-06-12 22:36:36,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:36,668 INFO L225 Difference]: With dead ends: 4128 [2021-06-12 22:36:36,668 INFO L226 Difference]: Without dead ends: 4052 [2021-06-12 22:36:36,668 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 535.7ms TimeCoverageRelationStatistics Valid=178, Invalid=1544, Unknown=0, NotChecked=0, Total=1722 [2021-06-12 22:36:36,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2021-06-12 22:36:36,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 3650. [2021-06-12 22:36:36,709 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) [2021-06-12 22:36:36,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12199 transitions. [2021-06-12 22:36:36,715 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12199 transitions. Word has length 39 [2021-06-12 22:36:36,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:36,715 INFO L482 AbstractCegarLoop]: Abstraction has 3650 states and 12199 transitions. [2021-06-12 22:36:36,715 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) [2021-06-12 22:36:36,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12199 transitions. [2021-06-12 22:36:36,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:36,719 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:36,719 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:36,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-06-12 22:36:36,720 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:36,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:36,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1314035406, now seen corresponding path program 140 times [2021-06-12 22:36:36,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:36,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818942988] [2021-06-12 22:36:36,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:36,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:36,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818942988] [2021-06-12 22:36:36,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818942988] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:36,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:36,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:36,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222968754] [2021-06-12 22:36:36,890 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:36,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:36,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:36,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:36,891 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) [2021-06-12 22:36:37,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:37,864 INFO L93 Difference]: Finished difference Result 4110 states and 13628 transitions. [2021-06-12 22:36:37,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:36:37,864 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 [2021-06-12 22:36:37,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:37,870 INFO L225 Difference]: With dead ends: 4110 [2021-06-12 22:36:37,870 INFO L226 Difference]: Without dead ends: 4040 [2021-06-12 22:36:37,870 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 612.6ms TimeCoverageRelationStatistics Valid=194, Invalid=1786, Unknown=0, NotChecked=0, Total=1980 [2021-06-12 22:36:37,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-06-12 22:36:37,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3638. [2021-06-12 22:36:37,911 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) [2021-06-12 22:36:37,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12171 transitions. [2021-06-12 22:36:37,916 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12171 transitions. Word has length 39 [2021-06-12 22:36:37,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:37,916 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12171 transitions. [2021-06-12 22:36:37,916 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) [2021-06-12 22:36:37,916 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12171 transitions. [2021-06-12 22:36:37,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:37,920 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:37,920 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:37,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-06-12 22:36:37,920 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:37,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:37,920 INFO L82 PathProgramCache]: Analyzing trace with hash 634844074, now seen corresponding path program 141 times [2021-06-12 22:36:37,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:37,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635335267] [2021-06-12 22:36:37,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:38,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:38,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:38,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635335267] [2021-06-12 22:36:38,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635335267] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:38,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:38,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:36:38,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249051388] [2021-06-12 22:36:38,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:36:38,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:38,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:36:38,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:36:38,080 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) [2021-06-12 22:36:38,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:38,907 INFO L93 Difference]: Finished difference Result 4059 states and 13491 transitions. [2021-06-12 22:36:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-12 22:36:38,908 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 [2021-06-12 22:36:38,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:38,914 INFO L225 Difference]: With dead ends: 4059 [2021-06-12 22:36:38,914 INFO L226 Difference]: Without dead ends: 3983 [2021-06-12 22:36:38,914 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 529.5ms TimeCoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2021-06-12 22:36:38,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2021-06-12 22:36:38,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3670. [2021-06-12 22:36:38,953 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) [2021-06-12 22:36:38,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 12259 transitions. [2021-06-12 22:36:38,958 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 12259 transitions. Word has length 39 [2021-06-12 22:36:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:38,958 INFO L482 AbstractCegarLoop]: Abstraction has 3670 states and 12259 transitions. [2021-06-12 22:36:38,959 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) [2021-06-12 22:36:38,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 12259 transitions. [2021-06-12 22:36:38,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:38,962 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:38,962 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:38,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-06-12 22:36:38,962 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:38,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:38,963 INFO L82 PathProgramCache]: Analyzing trace with hash -383209538, now seen corresponding path program 142 times [2021-06-12 22:36:38,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:38,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660484907] [2021-06-12 22:36:38,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:39,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:39,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660484907] [2021-06-12 22:36:39,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660484907] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:39,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:39,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:39,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738302957] [2021-06-12 22:36:39,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:39,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:39,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:39,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:39,137 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) [2021-06-12 22:36:40,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:40,048 INFO L93 Difference]: Finished difference Result 4041 states and 13437 transitions. [2021-06-12 22:36:40,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-12 22:36:40,049 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 [2021-06-12 22:36:40,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:40,055 INFO L225 Difference]: With dead ends: 4041 [2021-06-12 22:36:40,055 INFO L226 Difference]: Without dead ends: 3975 [2021-06-12 22:36:40,055 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 569.1ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-06-12 22:36:40,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2021-06-12 22:36:40,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3662. [2021-06-12 22:36:40,095 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) [2021-06-12 22:36:40,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12235 transitions. [2021-06-12 22:36:40,100 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12235 transitions. Word has length 39 [2021-06-12 22:36:40,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:40,100 INFO L482 AbstractCegarLoop]: Abstraction has 3662 states and 12235 transitions. [2021-06-12 22:36:40,100 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) [2021-06-12 22:36:40,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12235 transitions. [2021-06-12 22:36:40,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:40,104 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:40,104 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:40,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-06-12 22:36:40,104 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:40,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:40,104 INFO L82 PathProgramCache]: Analyzing trace with hash -665475192, now seen corresponding path program 143 times [2021-06-12 22:36:40,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:40,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750518328] [2021-06-12 22:36:40,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:40,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:40,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750518328] [2021-06-12 22:36:40,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750518328] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:40,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:40,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:36:40,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377731620] [2021-06-12 22:36:40,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:36:40,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:40,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:36:40,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:36:40,262 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) [2021-06-12 22:36:41,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:41,182 INFO L93 Difference]: Finished difference Result 4050 states and 13458 transitions. [2021-06-12 22:36:41,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-12 22:36:41,182 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 [2021-06-12 22:36:41,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:41,189 INFO L225 Difference]: With dead ends: 4050 [2021-06-12 22:36:41,189 INFO L226 Difference]: Without dead ends: 3888 [2021-06-12 22:36:41,189 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 582.0ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-06-12 22:36:41,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-06-12 22:36:41,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3594. [2021-06-12 22:36:41,228 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) [2021-06-12 22:36:41,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 12047 transitions. [2021-06-12 22:36:41,233 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 12047 transitions. Word has length 39 [2021-06-12 22:36:41,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:41,233 INFO L482 AbstractCegarLoop]: Abstraction has 3594 states and 12047 transitions. [2021-06-12 22:36:41,234 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) [2021-06-12 22:36:41,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 12047 transitions. [2021-06-12 22:36:41,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:41,237 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:41,237 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:41,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-06-12 22:36:41,237 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:41,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:41,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1455809180, now seen corresponding path program 144 times [2021-06-12 22:36:41,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:41,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307599853] [2021-06-12 22:36:41,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:41,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:41,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307599853] [2021-06-12 22:36:41,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307599853] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:41,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:41,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:36:41,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69420853] [2021-06-12 22:36:41,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:36:41,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:41,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:36:41,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:36:41,417 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) [2021-06-12 22:36:42,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:42,748 INFO L93 Difference]: Finished difference Result 4277 states and 14182 transitions. [2021-06-12 22:36:42,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-12 22:36:42,749 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:36:42,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:42,755 INFO L225 Difference]: With dead ends: 4277 [2021-06-12 22:36:42,755 INFO L226 Difference]: Without dead ends: 4210 [2021-06-12 22:36:42,755 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 832.9ms TimeCoverageRelationStatistics Valid=281, Invalid=2689, Unknown=0, NotChecked=0, Total=2970 [2021-06-12 22:36:42,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2021-06-12 22:36:42,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 3652. [2021-06-12 22:36:42,796 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) [2021-06-12 22:36:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 12220 transitions. [2021-06-12 22:36:42,801 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 12220 transitions. Word has length 39 [2021-06-12 22:36:42,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:42,801 INFO L482 AbstractCegarLoop]: Abstraction has 3652 states and 12220 transitions. [2021-06-12 22:36:42,801 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) [2021-06-12 22:36:42,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 12220 transitions. [2021-06-12 22:36:42,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:42,805 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:42,805 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:42,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-06-12 22:36:42,805 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:42,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:42,805 INFO L82 PathProgramCache]: Analyzing trace with hash -426604902, now seen corresponding path program 145 times [2021-06-12 22:36:42,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:42,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170209473] [2021-06-12 22:36:42,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:42,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:42,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170209473] [2021-06-12 22:36:42,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170209473] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:42,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:42,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:36:42,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818650052] [2021-06-12 22:36:42,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:36:42,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:42,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:36:42,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:36:42,994 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) [2021-06-12 22:36:44,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:44,670 INFO L93 Difference]: Finished difference Result 4414 states and 14539 transitions. [2021-06-12 22:36:44,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-12 22:36:44,671 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:36:44,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:44,677 INFO L225 Difference]: With dead ends: 4414 [2021-06-12 22:36:44,677 INFO L226 Difference]: Without dead ends: 4371 [2021-06-12 22:36:44,678 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 1056.5ms TimeCoverageRelationStatistics Valid=351, Invalid=3681, Unknown=0, NotChecked=0, Total=4032 [2021-06-12 22:36:44,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2021-06-12 22:36:44,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 3658. [2021-06-12 22:36:44,720 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) [2021-06-12 22:36:44,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12233 transitions. [2021-06-12 22:36:44,725 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12233 transitions. Word has length 39 [2021-06-12 22:36:44,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:44,725 INFO L482 AbstractCegarLoop]: Abstraction has 3658 states and 12233 transitions. [2021-06-12 22:36:44,725 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:44,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12233 transitions. [2021-06-12 22:36:44,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:44,729 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:44,729 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:44,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-06-12 22:36:44,729 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:44,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:44,729 INFO L82 PathProgramCache]: Analyzing trace with hash 2087764092, now seen corresponding path program 146 times [2021-06-12 22:36:44,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:44,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767116313] [2021-06-12 22:36:44,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:44,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:44,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767116313] [2021-06-12 22:36:44,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767116313] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:44,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:44,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:36:44,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918591713] [2021-06-12 22:36:44,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:36:44,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:44,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:36:44,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:36:44,906 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) [2021-06-12 22:36:46,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:46,544 INFO L93 Difference]: Finished difference Result 4345 states and 14359 transitions. [2021-06-12 22:36:46,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-12 22:36:46,544 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 [2021-06-12 22:36:46,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:46,550 INFO L225 Difference]: With dead ends: 4345 [2021-06-12 22:36:46,550 INFO L226 Difference]: Without dead ends: 4281 [2021-06-12 22:36:46,551 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1033.4ms TimeCoverageRelationStatistics Valid=333, Invalid=3449, Unknown=0, NotChecked=0, Total=3782 [2021-06-12 22:36:46,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2021-06-12 22:36:46,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 3640. [2021-06-12 22:36:46,592 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) [2021-06-12 22:36:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12190 transitions. [2021-06-12 22:36:46,597 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12190 transitions. Word has length 39 [2021-06-12 22:36:46,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:46,598 INFO L482 AbstractCegarLoop]: Abstraction has 3640 states and 12190 transitions. [2021-06-12 22:36:46,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12190 transitions. [2021-06-12 22:36:46,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:46,601 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:46,601 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:46,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-06-12 22:36:46,601 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:46,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:46,602 INFO L82 PathProgramCache]: Analyzing trace with hash -644743026, now seen corresponding path program 147 times [2021-06-12 22:36:46,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:46,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117748651] [2021-06-12 22:36:46,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:46,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:46,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117748651] [2021-06-12 22:36:46,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117748651] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:46,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:46,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:36:46,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669454892] [2021-06-12 22:36:46,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:36:46,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:46,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:36:46,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:36:46,777 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) [2021-06-12 22:36:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:47,947 INFO L93 Difference]: Finished difference Result 4245 states and 14072 transitions. [2021-06-12 22:36:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:36:47,947 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:36:47,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:47,953 INFO L225 Difference]: With dead ends: 4245 [2021-06-12 22:36:47,953 INFO L226 Difference]: Without dead ends: 4178 [2021-06-12 22:36:47,954 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 717.6ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:36:47,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2021-06-12 22:36:47,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 3648. [2021-06-12 22:36:47,995 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) [2021-06-12 22:36:48,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12206 transitions. [2021-06-12 22:36:48,001 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12206 transitions. Word has length 39 [2021-06-12 22:36:48,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:48,001 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 12206 transitions. [2021-06-12 22:36:48,001 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:48,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12206 transitions. [2021-06-12 22:36:48,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:48,005 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:48,005 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:48,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-06-12 22:36:48,005 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:48,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:48,005 INFO L82 PathProgramCache]: Analyzing trace with hash -816886244, now seen corresponding path program 148 times [2021-06-12 22:36:48,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:48,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787246556] [2021-06-12 22:36:48,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:48,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:48,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:48,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787246556] [2021-06-12 22:36:48,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787246556] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:48,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:48,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:36:48,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024696061] [2021-06-12 22:36:48,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:36:48,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:48,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:36:48,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:36:48,186 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) [2021-06-12 22:36:49,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:49,413 INFO L93 Difference]: Finished difference Result 4233 states and 14032 transitions. [2021-06-12 22:36:49,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:36:49,414 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:36:49,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:49,420 INFO L225 Difference]: With dead ends: 4233 [2021-06-12 22:36:49,420 INFO L226 Difference]: Without dead ends: 4170 [2021-06-12 22:36:49,420 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 765.8ms TimeCoverageRelationStatistics Valid=254, Invalid=2398, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:36:49,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-06-12 22:36:49,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3640. [2021-06-12 22:36:49,461 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) [2021-06-12 22:36:49,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12186 transitions. [2021-06-12 22:36:49,466 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12186 transitions. Word has length 39 [2021-06-12 22:36:49,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:49,466 INFO L482 AbstractCegarLoop]: Abstraction has 3640 states and 12186 transitions. [2021-06-12 22:36:49,466 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:49,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12186 transitions. [2021-06-12 22:36:49,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:49,470 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:49,470 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:49,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-06-12 22:36:49,470 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:49,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:49,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1853042244, now seen corresponding path program 149 times [2021-06-12 22:36:49,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:49,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320207931] [2021-06-12 22:36:49,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:49,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:49,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320207931] [2021-06-12 22:36:49,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320207931] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:49,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:49,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:36:49,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22009123] [2021-06-12 22:36:49,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:36:49,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:49,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:36:49,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:36:49,651 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) [2021-06-12 22:36:51,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:51,202 INFO L93 Difference]: Finished difference Result 4396 states and 14421 transitions. [2021-06-12 22:36:51,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-12 22:36:51,202 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 [2021-06-12 22:36:51,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:51,209 INFO L225 Difference]: With dead ends: 4396 [2021-06-12 22:36:51,209 INFO L226 Difference]: Without dead ends: 4353 [2021-06-12 22:36:51,209 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 1010.1ms TimeCoverageRelationStatistics Valid=333, Invalid=3449, Unknown=0, NotChecked=0, Total=3782 [2021-06-12 22:36:51,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2021-06-12 22:36:51,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 3648. [2021-06-12 22:36:51,254 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) [2021-06-12 22:36:51,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12206 transitions. [2021-06-12 22:36:51,259 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12206 transitions. Word has length 39 [2021-06-12 22:36:51,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:51,259 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 12206 transitions. [2021-06-12 22:36:51,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:51,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12206 transitions. [2021-06-12 22:36:51,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:51,263 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:51,263 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:51,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-06-12 22:36:51,264 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:51,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:51,264 INFO L82 PathProgramCache]: Analyzing trace with hash 661326750, now seen corresponding path program 150 times [2021-06-12 22:36:51,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:51,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851538576] [2021-06-12 22:36:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:51,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:51,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851538576] [2021-06-12 22:36:51,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851538576] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:51,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:51,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:36:51,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584671742] [2021-06-12 22:36:51,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:36:51,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:51,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:36:51,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:36:51,454 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) [2021-06-12 22:36:53,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:53,023 INFO L93 Difference]: Finished difference Result 4384 states and 14383 transitions. [2021-06-12 22:36:53,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-12 22:36:53,023 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:36:53,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:53,030 INFO L225 Difference]: With dead ends: 4384 [2021-06-12 22:36:53,030 INFO L226 Difference]: Without dead ends: 4332 [2021-06-12 22:36:53,030 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 1024.5ms TimeCoverageRelationStatistics Valid=325, Invalid=3335, Unknown=0, NotChecked=0, Total=3660 [2021-06-12 22:36:53,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2021-06-12 22:36:53,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 3640. [2021-06-12 22:36:53,072 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) [2021-06-12 22:36:53,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12186 transitions. [2021-06-12 22:36:53,077 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12186 transitions. Word has length 39 [2021-06-12 22:36:53,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:53,077 INFO L482 AbstractCegarLoop]: Abstraction has 3640 states and 12186 transitions. [2021-06-12 22:36:53,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:53,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12186 transitions. [2021-06-12 22:36:53,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:53,081 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:53,081 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:53,081 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-06-12 22:36:53,081 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:53,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:53,081 INFO L82 PathProgramCache]: Analyzing trace with hash -934558674, now seen corresponding path program 151 times [2021-06-12 22:36:53,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:53,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517247290] [2021-06-12 22:36:53,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:53,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:53,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517247290] [2021-06-12 22:36:53,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517247290] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:53,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:53,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:36:53,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634327989] [2021-06-12 22:36:53,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:36:53,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:53,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:36:53,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:36:53,258 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) [2021-06-12 22:36:54,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:54,496 INFO L93 Difference]: Finished difference Result 4361 states and 14306 transitions. [2021-06-12 22:36:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:36:54,496 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 [2021-06-12 22:36:54,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:54,502 INFO L225 Difference]: With dead ends: 4361 [2021-06-12 22:36:54,502 INFO L226 Difference]: Without dead ends: 4306 [2021-06-12 22:36:54,503 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 778.5ms TimeCoverageRelationStatistics Valid=271, Invalid=2591, Unknown=0, NotChecked=0, Total=2862 [2021-06-12 22:36:54,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2021-06-12 22:36:54,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 3642. [2021-06-12 22:36:54,544 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) [2021-06-12 22:36:54,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12189 transitions. [2021-06-12 22:36:54,549 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12189 transitions. Word has length 39 [2021-06-12 22:36:54,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:54,549 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12189 transitions. [2021-06-12 22:36:54,549 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:54,549 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12189 transitions. [2021-06-12 22:36:54,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:54,553 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:54,553 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:54,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-06-12 22:36:54,553 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:54,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:54,553 INFO L82 PathProgramCache]: Analyzing trace with hash 238093548, now seen corresponding path program 152 times [2021-06-12 22:36:54,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:54,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514945936] [2021-06-12 22:36:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:54,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:54,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514945936] [2021-06-12 22:36:54,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514945936] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:54,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:54,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:36:54,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070876613] [2021-06-12 22:36:54,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:36:54,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:54,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:36:54,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:36:54,732 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) [2021-06-12 22:36:55,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:55,903 INFO L93 Difference]: Finished difference Result 4296 states and 14154 transitions. [2021-06-12 22:36:55,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:36:55,903 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:36:55,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:55,909 INFO L225 Difference]: With dead ends: 4296 [2021-06-12 22:36:55,909 INFO L226 Difference]: Without dead ends: 4250 [2021-06-12 22:36:55,910 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 732.5ms TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:36:55,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4250 states. [2021-06-12 22:36:55,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4250 to 3646. [2021-06-12 22:36:55,949 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) [2021-06-12 22:36:55,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12197 transitions. [2021-06-12 22:36:55,955 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12197 transitions. Word has length 39 [2021-06-12 22:36:55,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:55,955 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12197 transitions. [2021-06-12 22:36:55,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:55,955 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12197 transitions. [2021-06-12 22:36:55,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:55,959 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:55,959 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:55,959 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-06-12 22:36:55,959 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:55,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:55,959 INFO L82 PathProgramCache]: Analyzing trace with hash -9372614, now seen corresponding path program 153 times [2021-06-12 22:36:55,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:55,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196055528] [2021-06-12 22:36:55,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:56,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:56,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:56,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196055528] [2021-06-12 22:36:56,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196055528] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:56,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:56,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:36:56,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863307719] [2021-06-12 22:36:56,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:36:56,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:56,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:36:56,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:36:56,140 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) [2021-06-12 22:36:57,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:57,333 INFO L93 Difference]: Finished difference Result 4256 states and 14065 transitions. [2021-06-12 22:36:57,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:36:57,333 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 [2021-06-12 22:36:57,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:57,341 INFO L225 Difference]: With dead ends: 4256 [2021-06-12 22:36:57,341 INFO L226 Difference]: Without dead ends: 4207 [2021-06-12 22:36:57,341 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 761.2ms TimeCoverageRelationStatistics Valid=250, Invalid=2300, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:36:57,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-06-12 22:36:57,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3636. [2021-06-12 22:36:57,384 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) [2021-06-12 22:36:57,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 12172 transitions. [2021-06-12 22:36:57,389 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 12172 transitions. Word has length 39 [2021-06-12 22:36:57,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:57,389 INFO L482 AbstractCegarLoop]: Abstraction has 3636 states and 12172 transitions. [2021-06-12 22:36:57,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:57,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 12172 transitions. [2021-06-12 22:36:57,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:57,393 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:57,393 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:57,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-06-12 22:36:57,393 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:57,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:57,394 INFO L82 PathProgramCache]: Analyzing trace with hash 694013562, now seen corresponding path program 154 times [2021-06-12 22:36:57,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:57,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914137888] [2021-06-12 22:36:57,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:57,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:57,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914137888] [2021-06-12 22:36:57,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914137888] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:57,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:57,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:36:57,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762982931] [2021-06-12 22:36:57,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:36:57,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:57,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:36:57,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:36:57,580 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) [2021-06-12 22:36:58,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:36:58,708 INFO L93 Difference]: Finished difference Result 4279 states and 14191 transitions. [2021-06-12 22:36:58,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:36:58,709 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:36:58,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:36:58,715 INFO L225 Difference]: With dead ends: 4279 [2021-06-12 22:36:58,715 INFO L226 Difference]: Without dead ends: 4212 [2021-06-12 22:36:58,715 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 653.4ms TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:36:58,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2021-06-12 22:36:58,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 3676. [2021-06-12 22:36:58,755 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) [2021-06-12 22:36:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12280 transitions. [2021-06-12 22:36:58,760 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12280 transitions. Word has length 39 [2021-06-12 22:36:58,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:36:58,760 INFO L482 AbstractCegarLoop]: Abstraction has 3676 states and 12280 transitions. [2021-06-12 22:36:58,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:36:58,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12280 transitions. [2021-06-12 22:36:58,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:36:58,764 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:36:58,764 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:36:58,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-06-12 22:36:58,764 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:36:58,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:36:58,764 INFO L82 PathProgramCache]: Analyzing trace with hash 521870344, now seen corresponding path program 155 times [2021-06-12 22:36:58,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:36:58,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267736671] [2021-06-12 22:36:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:36:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:36:58,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:36:58,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:36:58,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267736671] [2021-06-12 22:36:58,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267736671] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:36:58,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:36:58,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:36:58,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802734716] [2021-06-12 22:36:58,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:36:58,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:36:58,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:36:58,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:36:58,940 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) [2021-06-12 22:37:00,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:00,066 INFO L93 Difference]: Finished difference Result 4267 states and 14151 transitions. [2021-06-12 22:37:00,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-12 22:37:00,066 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:37:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:00,072 INFO L225 Difference]: With dead ends: 4267 [2021-06-12 22:37:00,072 INFO L226 Difference]: Without dead ends: 4204 [2021-06-12 22:37:00,073 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 661.4ms TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:37:00,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-06-12 22:37:00,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 3668. [2021-06-12 22:37:00,129 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) [2021-06-12 22:37:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12256 transitions. [2021-06-12 22:37:00,134 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12256 transitions. Word has length 39 [2021-06-12 22:37:00,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:00,134 INFO L482 AbstractCegarLoop]: Abstraction has 3668 states and 12256 transitions. [2021-06-12 22:37:00,135 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) [2021-06-12 22:37:00,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12256 transitions. [2021-06-12 22:37:00,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:00,138 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:00,138 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:00,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-06-12 22:37:00,139 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:00,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:00,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1280963812, now seen corresponding path program 156 times [2021-06-12 22:37:00,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:00,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914540596] [2021-06-12 22:37:00,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:00,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:00,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914540596] [2021-06-12 22:37:00,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914540596] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:00,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:00,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:37:00,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399879754] [2021-06-12 22:37:00,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:37:00,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:00,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:37:00,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:37:00,313 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) [2021-06-12 22:37:01,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:01,435 INFO L93 Difference]: Finished difference Result 4279 states and 14179 transitions. [2021-06-12 22:37:01,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:37:01,435 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:37:01,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:01,441 INFO L225 Difference]: With dead ends: 4279 [2021-06-12 22:37:01,441 INFO L226 Difference]: Without dead ends: 4140 [2021-06-12 22:37:01,441 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 641.6ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:37:01,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2021-06-12 22:37:01,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3616. [2021-06-12 22:37:01,482 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) [2021-06-12 22:37:01,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 12100 transitions. [2021-06-12 22:37:01,487 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 12100 transitions. Word has length 39 [2021-06-12 22:37:01,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:01,487 INFO L482 AbstractCegarLoop]: Abstraction has 3616 states and 12100 transitions. [2021-06-12 22:37:01,487 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:01,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 12100 transitions. [2021-06-12 22:37:01,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:01,491 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:01,491 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:01,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-06-12 22:37:01,491 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:01,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:01,491 INFO L82 PathProgramCache]: Analyzing trace with hash -508920310, now seen corresponding path program 157 times [2021-06-12 22:37:01,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:01,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469230466] [2021-06-12 22:37:01,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:01,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:01,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:01,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469230466] [2021-06-12 22:37:01,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469230466] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:01,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:01,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:37:01,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806430206] [2021-06-12 22:37:01,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:37:01,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:01,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:37:01,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:37:01,689 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) [2021-06-12 22:37:02,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:02,661 INFO L93 Difference]: Finished difference Result 4091 states and 13567 transitions. [2021-06-12 22:37:02,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-12 22:37:02,661 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 [2021-06-12 22:37:02,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:02,668 INFO L225 Difference]: With dead ends: 4091 [2021-06-12 22:37:02,668 INFO L226 Difference]: Without dead ends: 4024 [2021-06-12 22:37:02,668 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 642.5ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-06-12 22:37:02,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-06-12 22:37:02,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3668. [2021-06-12 22:37:02,711 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) [2021-06-12 22:37:02,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12236 transitions. [2021-06-12 22:37:02,716 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12236 transitions. Word has length 39 [2021-06-12 22:37:02,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:02,716 INFO L482 AbstractCegarLoop]: Abstraction has 3668 states and 12236 transitions. [2021-06-12 22:37:02,716 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:02,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12236 transitions. [2021-06-12 22:37:02,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:02,720 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:02,720 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:02,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-06-12 22:37:02,720 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:02,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:02,720 INFO L82 PathProgramCache]: Analyzing trace with hash -681063528, now seen corresponding path program 158 times [2021-06-12 22:37:02,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:02,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476595103] [2021-06-12 22:37:02,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:02,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:02,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476595103] [2021-06-12 22:37:02,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476595103] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:02,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:02,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:37:02,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741480782] [2021-06-12 22:37:02,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:37:02,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:02,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:37:02,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:37:02,897 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) [2021-06-12 22:37:03,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:03,881 INFO L93 Difference]: Finished difference Result 4079 states and 13527 transitions. [2021-06-12 22:37:03,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:37:03,882 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:37:03,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:03,887 INFO L225 Difference]: With dead ends: 4079 [2021-06-12 22:37:03,888 INFO L226 Difference]: Without dead ends: 4016 [2021-06-12 22:37:03,888 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 623.9ms TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-06-12 22:37:03,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2021-06-12 22:37:03,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 3660. [2021-06-12 22:37:03,927 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) [2021-06-12 22:37:03,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 12212 transitions. [2021-06-12 22:37:03,932 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 12212 transitions. Word has length 39 [2021-06-12 22:37:03,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:03,932 INFO L482 AbstractCegarLoop]: Abstraction has 3660 states and 12212 transitions. [2021-06-12 22:37:03,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:03,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 12212 transitions. [2021-06-12 22:37:03,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:03,936 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:03,936 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:03,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-06-12 22:37:03,936 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:03,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:03,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1811069612, now seen corresponding path program 159 times [2021-06-12 22:37:03,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:03,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557428635] [2021-06-12 22:37:03,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:04,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:04,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557428635] [2021-06-12 22:37:04,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557428635] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:04,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:04,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:37:04,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821766256] [2021-06-12 22:37:04,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:37:04,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:04,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:37:04,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:37:04,110 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) [2021-06-12 22:37:05,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:05,088 INFO L93 Difference]: Finished difference Result 4079 states and 13519 transitions. [2021-06-12 22:37:05,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-12 22:37:05,089 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:37:05,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:05,094 INFO L225 Difference]: With dead ends: 4079 [2021-06-12 22:37:05,094 INFO L226 Difference]: Without dead ends: 3936 [2021-06-12 22:37:05,094 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 624.1ms TimeCoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2021-06-12 22:37:05,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2021-06-12 22:37:05,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3608. [2021-06-12 22:37:05,132 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) [2021-06-12 22:37:05,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 12080 transitions. [2021-06-12 22:37:05,137 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 12080 transitions. Word has length 39 [2021-06-12 22:37:05,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:05,137 INFO L482 AbstractCegarLoop]: Abstraction has 3608 states and 12080 transitions. [2021-06-12 22:37:05,137 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) [2021-06-12 22:37:05,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 12080 transitions. [2021-06-12 22:37:05,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:05,141 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:05,141 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:05,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-06-12 22:37:05,141 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:05,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:05,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1294560022, now seen corresponding path program 160 times [2021-06-12 22:37:05,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:05,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437948375] [2021-06-12 22:37:05,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:05,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:05,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437948375] [2021-06-12 22:37:05,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437948375] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:05,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:05,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:37:05,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404497287] [2021-06-12 22:37:05,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:37:05,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:05,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:37:05,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:37:05,283 INFO L87 Difference]: Start difference. First operand 3608 states and 12080 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) [2021-06-12 22:37:06,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:06,291 INFO L93 Difference]: Finished difference Result 4099 states and 13671 transitions. [2021-06-12 22:37:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:37:06,291 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 [2021-06-12 22:37:06,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:06,297 INFO L225 Difference]: With dead ends: 4099 [2021-06-12 22:37:06,297 INFO L226 Difference]: Without dead ends: 4032 [2021-06-12 22:37:06,297 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 626.9ms TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2021-06-12 22:37:06,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4032 states. [2021-06-12 22:37:06,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4032 to 3700. [2021-06-12 22:37:06,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3700 states, 3699 states have (on average 3.346850500135172) internal successors, (12380), 3699 states have internal predecessors, (12380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:06,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3700 states to 3700 states and 12380 transitions. [2021-06-12 22:37:06,360 INFO L78 Accepts]: Start accepts. Automaton has 3700 states and 12380 transitions. Word has length 39 [2021-06-12 22:37:06,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:06,360 INFO L482 AbstractCegarLoop]: Abstraction has 3700 states and 12380 transitions. [2021-06-12 22:37:06,360 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) [2021-06-12 22:37:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 3700 states and 12380 transitions. [2021-06-12 22:37:06,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:06,364 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:06,364 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:06,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-06-12 22:37:06,364 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:06,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:06,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1117993192, now seen corresponding path program 161 times [2021-06-12 22:37:06,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:06,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612025892] [2021-06-12 22:37:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:06,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:06,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612025892] [2021-06-12 22:37:06,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612025892] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:06,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:06,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:37:06,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418084917] [2021-06-12 22:37:06,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:37:06,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:06,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:37:06,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:37:06,509 INFO L87 Difference]: Start difference. First operand 3700 states and 12380 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) [2021-06-12 22:37:07,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:07,947 INFO L93 Difference]: Finished difference Result 4203 states and 13962 transitions. [2021-06-12 22:37:07,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-12 22:37:07,947 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 [2021-06-12 22:37:07,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:07,953 INFO L225 Difference]: With dead ends: 4203 [2021-06-12 22:37:07,953 INFO L226 Difference]: Without dead ends: 4160 [2021-06-12 22:37:07,954 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 914.5ms TimeCoverageRelationStatistics Valid=291, Invalid=2789, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:37:07,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4160 states. [2021-06-12 22:37:08,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4160 to 3706. [2021-06-12 22:37:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3705 states have (on average 3.3449392712550607) internal successors, (12393), 3705 states have internal predecessors, (12393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:08,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 12393 transitions. [2021-06-12 22:37:08,017 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 12393 transitions. Word has length 39 [2021-06-12 22:37:08,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:08,017 INFO L482 AbstractCegarLoop]: Abstraction has 3706 states and 12393 transitions. [2021-06-12 22:37:08,017 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) [2021-06-12 22:37:08,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 12393 transitions. [2021-06-12 22:37:08,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:08,021 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:08,021 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:08,021 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-06-12 22:37:08,021 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:08,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:08,021 INFO L82 PathProgramCache]: Analyzing trace with hash -662605110, now seen corresponding path program 162 times [2021-06-12 22:37:08,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:08,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840949638] [2021-06-12 22:37:08,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:08,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:08,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840949638] [2021-06-12 22:37:08,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840949638] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:08,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:08,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:37:08,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525069181] [2021-06-12 22:37:08,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:37:08,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:08,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:37:08,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:37:08,167 INFO L87 Difference]: Start difference. First operand 3706 states and 12393 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) [2021-06-12 22:37:09,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:09,559 INFO L93 Difference]: Finished difference Result 4134 states and 13782 transitions. [2021-06-12 22:37:09,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-12 22:37:09,559 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 [2021-06-12 22:37:09,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:09,565 INFO L225 Difference]: With dead ends: 4134 [2021-06-12 22:37:09,565 INFO L226 Difference]: Without dead ends: 4070 [2021-06-12 22:37:09,566 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 915.0ms TimeCoverageRelationStatistics Valid=284, Invalid=2686, Unknown=0, NotChecked=0, Total=2970 [2021-06-12 22:37:09,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2021-06-12 22:37:09,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 3688. [2021-06-12 22:37:09,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 3.3474369406021154) internal successors, (12342), 3687 states have internal predecessors, (12342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:09,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 12342 transitions. [2021-06-12 22:37:09,631 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 12342 transitions. Word has length 39 [2021-06-12 22:37:09,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:09,631 INFO L482 AbstractCegarLoop]: Abstraction has 3688 states and 12342 transitions. [2021-06-12 22:37:09,631 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) [2021-06-12 22:37:09,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 12342 transitions. [2021-06-12 22:37:09,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:09,635 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:09,635 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:09,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-06-12 22:37:09,635 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:09,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:09,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1071420726, now seen corresponding path program 163 times [2021-06-12 22:37:09,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:09,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037739624] [2021-06-12 22:37:09,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:09,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:09,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:09,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037739624] [2021-06-12 22:37:09,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037739624] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:09,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:09,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:37:09,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115568386] [2021-06-12 22:37:09,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:37:09,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:09,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:37:09,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:37:09,791 INFO L87 Difference]: Start difference. First operand 3688 states and 12342 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) [2021-06-12 22:37:11,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:11,124 INFO L93 Difference]: Finished difference Result 4145 states and 13790 transitions. [2021-06-12 22:37:11,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-12 22:37:11,125 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 [2021-06-12 22:37:11,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:11,131 INFO L225 Difference]: With dead ends: 4145 [2021-06-12 22:37:11,131 INFO L226 Difference]: Without dead ends: 4015 [2021-06-12 22:37:11,131 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 834.3ms TimeCoverageRelationStatistics Valid=255, Invalid=2397, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:37:11,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4015 states. [2021-06-12 22:37:11,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4015 to 3664. [2021-06-12 22:37:11,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3663 states have (on average 3.3497133497133498) internal successors, (12270), 3663 states have internal predecessors, (12270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 12270 transitions. [2021-06-12 22:37:11,179 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 12270 transitions. Word has length 39 [2021-06-12 22:37:11,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:11,179 INFO L482 AbstractCegarLoop]: Abstraction has 3664 states and 12270 transitions. [2021-06-12 22:37:11,179 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) [2021-06-12 22:37:11,179 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 12270 transitions. [2021-06-12 22:37:11,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:11,201 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:11,201 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:11,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-06-12 22:37:11,201 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:11,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:11,202 INFO L82 PathProgramCache]: Analyzing trace with hash 929329238, now seen corresponding path program 164 times [2021-06-12 22:37:11,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:11,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552376861] [2021-06-12 22:37:11,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:11,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:11,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:11,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552376861] [2021-06-12 22:37:11,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552376861] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:11,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:11,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:11,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893352497] [2021-06-12 22:37:11,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:11,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:11,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:11,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:11,364 INFO L87 Difference]: Start difference. First operand 3664 states and 12270 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) [2021-06-12 22:37:12,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:12,558 INFO L93 Difference]: Finished difference Result 4129 states and 13740 transitions. [2021-06-12 22:37:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-12 22:37:12,558 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 [2021-06-12 22:37:12,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:12,565 INFO L225 Difference]: With dead ends: 4129 [2021-06-12 22:37:12,565 INFO L226 Difference]: Without dead ends: 4062 [2021-06-12 22:37:12,565 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 769.9ms TimeCoverageRelationStatistics Valid=258, Invalid=2394, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:37:12,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2021-06-12 22:37:12,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 3680. [2021-06-12 22:37:12,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3679 states have (on average 3.3460179396575156) internal successors, (12310), 3679 states have internal predecessors, (12310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 12310 transitions. [2021-06-12 22:37:12,612 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 12310 transitions. Word has length 39 [2021-06-12 22:37:12,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:12,612 INFO L482 AbstractCegarLoop]: Abstraction has 3680 states and 12310 transitions. [2021-06-12 22:37:12,612 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) [2021-06-12 22:37:12,613 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 12310 transitions. [2021-06-12 22:37:12,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:12,616 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:12,616 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:12,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-06-12 22:37:12,617 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:12,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:12,617 INFO L82 PathProgramCache]: Analyzing trace with hash -953084844, now seen corresponding path program 165 times [2021-06-12 22:37:12,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:12,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169059821] [2021-06-12 22:37:12,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:12,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:12,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:12,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169059821] [2021-06-12 22:37:12,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169059821] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:12,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:12,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:12,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470469096] [2021-06-12 22:37:12,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:12,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:12,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:12,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:12,785 INFO L87 Difference]: Start difference. First operand 3680 states and 12310 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) [2021-06-12 22:37:14,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:14,349 INFO L93 Difference]: Finished difference Result 4266 states and 14097 transitions. [2021-06-12 22:37:14,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-12 22:37:14,350 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 [2021-06-12 22:37:14,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:14,356 INFO L225 Difference]: With dead ends: 4266 [2021-06-12 22:37:14,356 INFO L226 Difference]: Without dead ends: 4223 [2021-06-12 22:37:14,356 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 1048.5ms TimeCoverageRelationStatistics Valid=352, Invalid=3554, Unknown=0, NotChecked=0, Total=3906 [2021-06-12 22:37:14,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2021-06-12 22:37:14,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 3686. [2021-06-12 22:37:14,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 3685 states have (on average 3.344097693351425) internal successors, (12323), 3685 states have internal predecessors, (12323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 12323 transitions. [2021-06-12 22:37:14,417 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 12323 transitions. Word has length 39 [2021-06-12 22:37:14,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:14,417 INFO L482 AbstractCegarLoop]: Abstraction has 3686 states and 12323 transitions. [2021-06-12 22:37:14,417 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) [2021-06-12 22:37:14,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 12323 transitions. [2021-06-12 22:37:14,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:14,421 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:14,421 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:14,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-06-12 22:37:14,421 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:14,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:14,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1561284150, now seen corresponding path program 166 times [2021-06-12 22:37:14,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:14,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267273874] [2021-06-12 22:37:14,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:14,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:14,578 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:14,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267273874] [2021-06-12 22:37:14,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267273874] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:14,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:14,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:14,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100859288] [2021-06-12 22:37:14,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:14,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:14,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:14,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:14,579 INFO L87 Difference]: Start difference. First operand 3686 states and 12323 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) [2021-06-12 22:37:16,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:16,090 INFO L93 Difference]: Finished difference Result 4197 states and 13917 transitions. [2021-06-12 22:37:16,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-12 22:37:16,090 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 [2021-06-12 22:37:16,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:16,096 INFO L225 Difference]: With dead ends: 4197 [2021-06-12 22:37:16,096 INFO L226 Difference]: Without dead ends: 4133 [2021-06-12 22:37:16,096 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 993.4ms TimeCoverageRelationStatistics Valid=325, Invalid=3215, Unknown=0, NotChecked=0, Total=3540 [2021-06-12 22:37:16,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2021-06-12 22:37:16,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 3668. [2021-06-12 22:37:16,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.348786473956913) internal successors, (12280), 3667 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) [2021-06-12 22:37:16,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12280 transitions. [2021-06-12 22:37:16,141 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12280 transitions. Word has length 39 [2021-06-12 22:37:16,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:16,142 INFO L482 AbstractCegarLoop]: Abstraction has 3668 states and 12280 transitions. [2021-06-12 22:37:16,142 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) [2021-06-12 22:37:16,142 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12280 transitions. [2021-06-12 22:37:16,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:16,146 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:16,146 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:16,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-06-12 22:37:16,146 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:16,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:16,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1171222968, now seen corresponding path program 167 times [2021-06-12 22:37:16,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:16,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299011544] [2021-06-12 22:37:16,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:16,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:16,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299011544] [2021-06-12 22:37:16,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299011544] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:16,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:16,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:16,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574693783] [2021-06-12 22:37:16,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:16,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:16,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:16,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:16,306 INFO L87 Difference]: Start difference. First operand 3668 states and 12280 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) [2021-06-12 22:37:17,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:17,290 INFO L93 Difference]: Finished difference Result 4015 states and 13375 transitions. [2021-06-12 22:37:17,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:37:17,290 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 [2021-06-12 22:37:17,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:17,296 INFO L225 Difference]: With dead ends: 4015 [2021-06-12 22:37:17,296 INFO L226 Difference]: Without dead ends: 3948 [2021-06-12 22:37:17,297 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 633.4ms TimeCoverageRelationStatistics Valid=211, Invalid=1859, Unknown=0, NotChecked=0, Total=2070 [2021-06-12 22:37:17,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2021-06-12 22:37:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3676. [2021-06-12 22:37:17,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3675 states have (on average 3.3458503401360544) internal successors, (12296), 3675 states have internal predecessors, (12296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:17,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12296 transitions. [2021-06-12 22:37:17,342 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12296 transitions. Word has length 39 [2021-06-12 22:37:17,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:17,342 INFO L482 AbstractCegarLoop]: Abstraction has 3676 states and 12296 transitions. [2021-06-12 22:37:17,342 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) [2021-06-12 22:37:17,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12296 transitions. [2021-06-12 22:37:17,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:17,345 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:17,345 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:17,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-06-12 22:37:17,346 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:17,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:17,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1343366186, now seen corresponding path program 168 times [2021-06-12 22:37:17,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:17,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25241516] [2021-06-12 22:37:17,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:17,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:17,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:17,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25241516] [2021-06-12 22:37:17,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25241516] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:17,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:17,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:17,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109413977] [2021-06-12 22:37:17,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:17,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:17,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:17,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:17,528 INFO L87 Difference]: Start difference. First operand 3676 states and 12296 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) [2021-06-12 22:37:18,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:18,538 INFO L93 Difference]: Finished difference Result 4003 states and 13335 transitions. [2021-06-12 22:37:18,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-12 22:37:18,538 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 [2021-06-12 22:37:18,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:18,544 INFO L225 Difference]: With dead ends: 4003 [2021-06-12 22:37:18,545 INFO L226 Difference]: Without dead ends: 3940 [2021-06-12 22:37:18,545 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 671.4ms TimeCoverageRelationStatistics Valid=217, Invalid=1945, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:37:18,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3940 states. [2021-06-12 22:37:18,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3940 to 3668. [2021-06-12 22:37:18,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.347695664030543) internal successors, (12276), 3667 states have internal predecessors, (12276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12276 transitions. [2021-06-12 22:37:18,591 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12276 transitions. Word has length 39 [2021-06-12 22:37:18,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:18,591 INFO L482 AbstractCegarLoop]: Abstraction has 3668 states and 12276 transitions. [2021-06-12 22:37:18,591 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) [2021-06-12 22:37:18,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12276 transitions. [2021-06-12 22:37:18,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:18,595 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:18,595 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:18,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-06-12 22:37:18,595 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:18,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:18,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1915445110, now seen corresponding path program 169 times [2021-06-12 22:37:18,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:18,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671127979] [2021-06-12 22:37:18,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:18,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:18,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:18,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671127979] [2021-06-12 22:37:18,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671127979] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:18,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:18,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:18,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753541526] [2021-06-12 22:37:18,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:18,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:18,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:18,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:18,751 INFO L87 Difference]: Start difference. First operand 3668 states and 12276 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) [2021-06-12 22:37:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:20,142 INFO L93 Difference]: Finished difference Result 4137 states and 13670 transitions. [2021-06-12 22:37:20,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-12 22:37:20,143 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 [2021-06-12 22:37:20,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:20,149 INFO L225 Difference]: With dead ends: 4137 [2021-06-12 22:37:20,149 INFO L226 Difference]: Without dead ends: 4094 [2021-06-12 22:37:20,149 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 937.9ms TimeCoverageRelationStatistics Valid=314, Invalid=2992, Unknown=0, NotChecked=0, Total=3306 [2021-06-12 22:37:20,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2021-06-12 22:37:20,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 3676. [2021-06-12 22:37:20,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3675 states have (on average 3.3458503401360544) internal successors, (12296), 3675 states have internal predecessors, (12296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12296 transitions. [2021-06-12 22:37:20,195 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12296 transitions. Word has length 39 [2021-06-12 22:37:20,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:20,195 INFO L482 AbstractCegarLoop]: Abstraction has 3676 states and 12296 transitions. [2021-06-12 22:37:20,195 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) [2021-06-12 22:37:20,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12296 transitions. [2021-06-12 22:37:20,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:20,199 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:20,199 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:20,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-06-12 22:37:20,199 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:20,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:20,199 INFO L82 PathProgramCache]: Analyzing trace with hash 134846808, now seen corresponding path program 170 times [2021-06-12 22:37:20,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:20,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196112088] [2021-06-12 22:37:20,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:20,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:20,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196112088] [2021-06-12 22:37:20,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196112088] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:20,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:20,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:20,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003759586] [2021-06-12 22:37:20,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:20,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:20,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:20,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:20,359 INFO L87 Difference]: Start difference. First operand 3676 states and 12296 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) [2021-06-12 22:37:21,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:21,732 INFO L93 Difference]: Finished difference Result 4125 states and 13632 transitions. [2021-06-12 22:37:21,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-12 22:37:21,732 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 [2021-06-12 22:37:21,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:21,739 INFO L225 Difference]: With dead ends: 4125 [2021-06-12 22:37:21,739 INFO L226 Difference]: Without dead ends: 4073 [2021-06-12 22:37:21,739 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 926.8ms TimeCoverageRelationStatistics Valid=306, Invalid=2886, Unknown=0, NotChecked=0, Total=3192 [2021-06-12 22:37:21,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4073 states. [2021-06-12 22:37:21,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4073 to 3668. [2021-06-12 22:37:21,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.347695664030543) internal successors, (12276), 3667 states have internal predecessors, (12276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:21,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12276 transitions. [2021-06-12 22:37:21,788 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12276 transitions. Word has length 39 [2021-06-12 22:37:21,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:21,789 INFO L482 AbstractCegarLoop]: Abstraction has 3668 states and 12276 transitions. [2021-06-12 22:37:21,789 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) [2021-06-12 22:37:21,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12276 transitions. [2021-06-12 22:37:21,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:21,793 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:21,793 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:21,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-06-12 22:37:21,793 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:21,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:21,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1461038616, now seen corresponding path program 171 times [2021-06-12 22:37:21,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:21,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384194866] [2021-06-12 22:37:21,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:21,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:21,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384194866] [2021-06-12 22:37:21,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384194866] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:21,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:21,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:21,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946693621] [2021-06-12 22:37:21,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:21,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:21,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:21,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:21,945 INFO L87 Difference]: Start difference. First operand 3668 states and 12276 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) [2021-06-12 22:37:23,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:23,007 INFO L93 Difference]: Finished difference Result 4090 states and 13523 transitions. [2021-06-12 22:37:23,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:37:23,007 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 [2021-06-12 22:37:23,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:23,013 INFO L225 Difference]: With dead ends: 4090 [2021-06-12 22:37:23,013 INFO L226 Difference]: Without dead ends: 4035 [2021-06-12 22:37:23,014 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 695.9ms TimeCoverageRelationStatistics Valid=239, Invalid=2113, Unknown=0, NotChecked=0, Total=2352 [2021-06-12 22:37:23,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2021-06-12 22:37:23,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 3670. [2021-06-12 22:37:23,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3669 states have (on average 3.3466884709730174) internal successors, (12279), 3669 states have internal predecessors, (12279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:23,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 12279 transitions. [2021-06-12 22:37:23,058 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 12279 transitions. Word has length 39 [2021-06-12 22:37:23,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:23,058 INFO L482 AbstractCegarLoop]: Abstraction has 3670 states and 12279 transitions. [2021-06-12 22:37:23,058 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) [2021-06-12 22:37:23,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 12279 transitions. [2021-06-12 22:37:23,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:23,062 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:23,062 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:23,062 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-06-12 22:37:23,062 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:23,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:23,063 INFO L82 PathProgramCache]: Analyzing trace with hash -288386394, now seen corresponding path program 172 times [2021-06-12 22:37:23,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:23,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655530616] [2021-06-12 22:37:23,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:23,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:23,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655530616] [2021-06-12 22:37:23,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655530616] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:23,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:23,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:23,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421046023] [2021-06-12 22:37:23,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:23,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:23,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:23,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:23,220 INFO L87 Difference]: Start difference. First operand 3670 states and 12279 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) [2021-06-12 22:37:24,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:24,244 INFO L93 Difference]: Finished difference Result 4000 states and 13325 transitions. [2021-06-12 22:37:24,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-12 22:37:24,245 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 [2021-06-12 22:37:24,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:24,250 INFO L225 Difference]: With dead ends: 4000 [2021-06-12 22:37:24,251 INFO L226 Difference]: Without dead ends: 3936 [2021-06-12 22:37:24,251 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 675.8ms TimeCoverageRelationStatistics Valid=224, Invalid=1938, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:37:24,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2021-06-12 22:37:24,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3664. [2021-06-12 22:37:24,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3663 states have (on average 3.3486213486213487) internal successors, (12266), 3663 states have internal predecessors, (12266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 12266 transitions. [2021-06-12 22:37:24,295 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 12266 transitions. Word has length 39 [2021-06-12 22:37:24,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:24,295 INFO L482 AbstractCegarLoop]: Abstraction has 3664 states and 12266 transitions. [2021-06-12 22:37:24,295 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) [2021-06-12 22:37:24,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 12266 transitions. [2021-06-12 22:37:24,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:24,298 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:24,298 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:24,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-06-12 22:37:24,299 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:24,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:24,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1953661928, now seen corresponding path program 173 times [2021-06-12 22:37:24,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:24,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962286190] [2021-06-12 22:37:24,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:24,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:24,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962286190] [2021-06-12 22:37:24,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962286190] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:24,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:24,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:24,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425676239] [2021-06-12 22:37:24,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:24,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:24,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:24,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:24,458 INFO L87 Difference]: Start difference. First operand 3664 states and 12266 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) [2021-06-12 22:37:26,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:26,008 INFO L93 Difference]: Finished difference Result 4263 states and 14057 transitions. [2021-06-12 22:37:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-12 22:37:26,009 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 [2021-06-12 22:37:26,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:26,015 INFO L225 Difference]: With dead ends: 4263 [2021-06-12 22:37:26,015 INFO L226 Difference]: Without dead ends: 4126 [2021-06-12 22:37:26,015 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 992.2ms TimeCoverageRelationStatistics Valid=307, Invalid=3115, Unknown=0, NotChecked=0, Total=3422 [2021-06-12 22:37:26,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-06-12 22:37:26,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 3668. [2021-06-12 22:37:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.347695664030543) internal successors, (12276), 3667 states have internal predecessors, (12276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:26,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12276 transitions. [2021-06-12 22:37:26,060 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12276 transitions. Word has length 39 [2021-06-12 22:37:26,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:26,060 INFO L482 AbstractCegarLoop]: Abstraction has 3668 states and 12276 transitions. [2021-06-12 22:37:26,060 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) [2021-06-12 22:37:26,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12276 transitions. [2021-06-12 22:37:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:26,064 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:26,064 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:26,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-06-12 22:37:26,064 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:26,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:26,064 INFO L82 PathProgramCache]: Analyzing trace with hash 458771028, now seen corresponding path program 174 times [2021-06-12 22:37:26,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:26,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879710375] [2021-06-12 22:37:26,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:26,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:26,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:26,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879710375] [2021-06-12 22:37:26,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879710375] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:26,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:26,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:26,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728490328] [2021-06-12 22:37:26,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:26,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:26,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:26,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:26,227 INFO L87 Difference]: Start difference. First operand 3668 states and 12276 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) [2021-06-12 22:37:27,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:27,610 INFO L93 Difference]: Finished difference Result 4241 states and 13923 transitions. [2021-06-12 22:37:27,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-12 22:37:27,610 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 [2021-06-12 22:37:27,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:27,616 INFO L225 Difference]: With dead ends: 4241 [2021-06-12 22:37:27,616 INFO L226 Difference]: Without dead ends: 4177 [2021-06-12 22:37:27,617 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 926.1ms TimeCoverageRelationStatistics Valid=299, Invalid=2893, Unknown=0, NotChecked=0, Total=3192 [2021-06-12 22:37:27,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4177 states. [2021-06-12 22:37:27,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4177 to 3668. [2021-06-12 22:37:27,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.347695664030543) internal successors, (12276), 3667 states have internal predecessors, (12276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12276 transitions. [2021-06-12 22:37:27,666 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12276 transitions. Word has length 39 [2021-06-12 22:37:27,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:27,666 INFO L482 AbstractCegarLoop]: Abstraction has 3668 states and 12276 transitions. [2021-06-12 22:37:27,666 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) [2021-06-12 22:37:27,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12276 transitions. [2021-06-12 22:37:27,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:27,670 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:27,670 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:27,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-06-12 22:37:27,670 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:27,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:27,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1377254598, now seen corresponding path program 175 times [2021-06-12 22:37:27,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:27,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799907235] [2021-06-12 22:37:27,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:27,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:27,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799907235] [2021-06-12 22:37:27,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799907235] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:27,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:27,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:27,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924955153] [2021-06-12 22:37:27,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:27,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:27,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:27,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:27,828 INFO L87 Difference]: Start difference. First operand 3668 states and 12276 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) [2021-06-12 22:37:28,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:28,878 INFO L93 Difference]: Finished difference Result 4146 states and 13671 transitions. [2021-06-12 22:37:28,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:37:28,879 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 [2021-06-12 22:37:28,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:28,885 INFO L225 Difference]: With dead ends: 4146 [2021-06-12 22:37:28,885 INFO L226 Difference]: Without dead ends: 4091 [2021-06-12 22:37:28,886 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 666.0ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:37:28,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4091 states. [2021-06-12 22:37:28,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4091 to 3670. [2021-06-12 22:37:28,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3669 states have (on average 3.3466884709730174) internal successors, (12279), 3669 states have internal predecessors, (12279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:28,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 12279 transitions. [2021-06-12 22:37:28,949 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 12279 transitions. Word has length 39 [2021-06-12 22:37:28,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:28,949 INFO L482 AbstractCegarLoop]: Abstraction has 3670 states and 12279 transitions. [2021-06-12 22:37:28,949 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) [2021-06-12 22:37:28,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 12279 transitions. [2021-06-12 22:37:28,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:28,953 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:28,953 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:28,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-06-12 22:37:28,953 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:28,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:28,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1745060476, now seen corresponding path program 176 times [2021-06-12 22:37:28,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:28,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600118167] [2021-06-12 22:37:28,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:29,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:29,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:29,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600118167] [2021-06-12 22:37:29,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600118167] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:29,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:29,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:29,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723025030] [2021-06-12 22:37:29,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:29,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:29,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:29,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:29,114 INFO L87 Difference]: Start difference. First operand 3670 states and 12279 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) [2021-06-12 22:37:30,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:30,175 INFO L93 Difference]: Finished difference Result 4116 states and 13610 transitions. [2021-06-12 22:37:30,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-12 22:37:30,176 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 [2021-06-12 22:37:30,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:30,182 INFO L225 Difference]: With dead ends: 4116 [2021-06-12 22:37:30,182 INFO L226 Difference]: Without dead ends: 4056 [2021-06-12 22:37:30,182 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 688.6ms TimeCoverageRelationStatistics Valid=223, Invalid=2033, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:37:30,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4056 states. [2021-06-12 22:37:30,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4056 to 3668. [2021-06-12 22:37:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 3667 states have (on average 3.3471502590673574) internal successors, (12274), 3667 states have internal predecessors, (12274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:30,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12274 transitions. [2021-06-12 22:37:30,231 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12274 transitions. Word has length 39 [2021-06-12 22:37:30,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:30,231 INFO L482 AbstractCegarLoop]: Abstraction has 3668 states and 12274 transitions. [2021-06-12 22:37:30,231 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) [2021-06-12 22:37:30,231 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12274 transitions. [2021-06-12 22:37:30,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:30,235 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:30,236 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:30,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-06-12 22:37:30,236 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:30,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:30,236 INFO L82 PathProgramCache]: Analyzing trace with hash 470340278, now seen corresponding path program 177 times [2021-06-12 22:37:30,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:30,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555443398] [2021-06-12 22:37:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:30,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:30,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555443398] [2021-06-12 22:37:30,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555443398] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:30,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:30,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:37:30,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036020328] [2021-06-12 22:37:30,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:37:30,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:30,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:37:30,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:37:30,402 INFO L87 Difference]: Start difference. First operand 3668 states and 12274 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) [2021-06-12 22:37:31,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:31,332 INFO L93 Difference]: Finished difference Result 4027 states and 13397 transitions. [2021-06-12 22:37:31,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-12 22:37:31,333 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 [2021-06-12 22:37:31,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:31,339 INFO L225 Difference]: With dead ends: 4027 [2021-06-12 22:37:31,339 INFO L226 Difference]: Without dead ends: 3951 [2021-06-12 22:37:31,339 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 616.3ms TimeCoverageRelationStatistics Valid=196, Invalid=1696, Unknown=0, NotChecked=0, Total=1892 [2021-06-12 22:37:31,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2021-06-12 22:37:31,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3676. [2021-06-12 22:37:31,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3675 states have (on average 3.34421768707483) internal successors, (12290), 3675 states have internal predecessors, (12290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:31,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12290 transitions. [2021-06-12 22:37:31,389 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12290 transitions. Word has length 39 [2021-06-12 22:37:31,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:31,389 INFO L482 AbstractCegarLoop]: Abstraction has 3676 states and 12290 transitions. [2021-06-12 22:37:31,389 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) [2021-06-12 22:37:31,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12290 transitions. [2021-06-12 22:37:31,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:31,393 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:31,393 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:31,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-06-12 22:37:31,393 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:31,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:31,393 INFO L82 PathProgramCache]: Analyzing trace with hash -547713334, now seen corresponding path program 178 times [2021-06-12 22:37:31,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:31,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212307439] [2021-06-12 22:37:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:31,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:31,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212307439] [2021-06-12 22:37:31,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212307439] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:31,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:31,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:31,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190529960] [2021-06-12 22:37:31,554 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:31,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:31,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:31,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:31,554 INFO L87 Difference]: Start difference. First operand 3676 states and 12290 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) [2021-06-12 22:37:32,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:32,580 INFO L93 Difference]: Finished difference Result 4009 states and 13343 transitions. [2021-06-12 22:37:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-12 22:37:32,580 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 [2021-06-12 22:37:32,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:32,586 INFO L225 Difference]: With dead ends: 4009 [2021-06-12 22:37:32,586 INFO L226 Difference]: Without dead ends: 3931 [2021-06-12 22:37:32,586 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 658.6ms TimeCoverageRelationStatistics Valid=212, Invalid=1950, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:37:32,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-06-12 22:37:32,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3656. [2021-06-12 22:37:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3656 states, 3655 states have (on average 3.3493844049247605) internal successors, (12242), 3655 states have internal predecessors, (12242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 12242 transitions. [2021-06-12 22:37:32,630 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 12242 transitions. Word has length 39 [2021-06-12 22:37:32,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:32,631 INFO L482 AbstractCegarLoop]: Abstraction has 3656 states and 12242 transitions. [2021-06-12 22:37:32,631 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) [2021-06-12 22:37:32,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 12242 transitions. [2021-06-12 22:37:32,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:32,634 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:32,634 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:32,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-06-12 22:37:32,635 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:32,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:32,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1499196492, now seen corresponding path program 179 times [2021-06-12 22:37:32,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:32,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58806786] [2021-06-12 22:37:32,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:32,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:32,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58806786] [2021-06-12 22:37:32,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58806786] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:32,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:32,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:32,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397439241] [2021-06-12 22:37:32,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:32,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:32,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:32,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:32,795 INFO L87 Difference]: Start difference. First operand 3656 states and 12242 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) [2021-06-12 22:37:34,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:34,020 INFO L93 Difference]: Finished difference Result 4203 states and 13963 transitions. [2021-06-12 22:37:34,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:37:34,021 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 [2021-06-12 22:37:34,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:34,026 INFO L225 Difference]: With dead ends: 4203 [2021-06-12 22:37:34,026 INFO L226 Difference]: Without dead ends: 4136 [2021-06-12 22:37:34,027 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 759.6ms TimeCoverageRelationStatistics Valid=251, Invalid=2299, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:37:34,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2021-06-12 22:37:34,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3696. [2021-06-12 22:37:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 3695 states have (on average 3.346955345060893) internal successors, (12367), 3695 states have internal predecessors, (12367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:34,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 12367 transitions. [2021-06-12 22:37:34,073 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 12367 transitions. Word has length 39 [2021-06-12 22:37:34,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:34,073 INFO L482 AbstractCegarLoop]: Abstraction has 3696 states and 12367 transitions. [2021-06-12 22:37:34,073 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) [2021-06-12 22:37:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 12367 transitions. [2021-06-12 22:37:34,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:34,077 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:34,077 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:34,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-06-12 22:37:34,077 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:34,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:34,077 INFO L82 PathProgramCache]: Analyzing trace with hash -383217590, now seen corresponding path program 180 times [2021-06-12 22:37:34,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:34,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482348055] [2021-06-12 22:37:34,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:34,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:34,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482348055] [2021-06-12 22:37:34,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482348055] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:34,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:34,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:34,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453497670] [2021-06-12 22:37:34,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:34,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:34,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:34,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:34,242 INFO L87 Difference]: Start difference. First operand 3696 states and 12367 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) [2021-06-12 22:37:35,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:35,845 INFO L93 Difference]: Finished difference Result 4340 states and 14320 transitions. [2021-06-12 22:37:35,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-12 22:37:35,846 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 [2021-06-12 22:37:35,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:35,852 INFO L225 Difference]: With dead ends: 4340 [2021-06-12 22:37:35,852 INFO L226 Difference]: Without dead ends: 4297 [2021-06-12 22:37:35,852 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 995.0ms TimeCoverageRelationStatistics Valid=332, Invalid=3328, Unknown=0, NotChecked=0, Total=3660 [2021-06-12 22:37:35,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2021-06-12 22:37:35,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 3702. [2021-06-12 22:37:35,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3702 states, 3701 states have (on average 3.3450418805728184) internal successors, (12380), 3701 states have internal predecessors, (12380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3702 states to 3702 states and 12380 transitions. [2021-06-12 22:37:35,899 INFO L78 Accepts]: Start accepts. Automaton has 3702 states and 12380 transitions. Word has length 39 [2021-06-12 22:37:35,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:35,899 INFO L482 AbstractCegarLoop]: Abstraction has 3702 states and 12380 transitions. [2021-06-12 22:37:35,899 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) [2021-06-12 22:37:35,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3702 states and 12380 transitions. [2021-06-12 22:37:35,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:35,903 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:35,903 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:35,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-06-12 22:37:35,903 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:35,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:35,903 INFO L82 PathProgramCache]: Analyzing trace with hash 2131151404, now seen corresponding path program 181 times [2021-06-12 22:37:35,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:35,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618783365] [2021-06-12 22:37:35,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:36,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:36,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:36,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618783365] [2021-06-12 22:37:36,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618783365] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:36,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:36,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:36,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728129732] [2021-06-12 22:37:36,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:36,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:36,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:36,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:36,066 INFO L87 Difference]: Start difference. First operand 3702 states and 12380 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) [2021-06-12 22:37:37,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:37,632 INFO L93 Difference]: Finished difference Result 4271 states and 14140 transitions. [2021-06-12 22:37:37,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-12 22:37:37,632 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 [2021-06-12 22:37:37,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:37,638 INFO L225 Difference]: With dead ends: 4271 [2021-06-12 22:37:37,638 INFO L226 Difference]: Without dead ends: 4207 [2021-06-12 22:37:37,639 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 990.2ms TimeCoverageRelationStatistics Valid=314, Invalid=3108, Unknown=0, NotChecked=0, Total=3422 [2021-06-12 22:37:37,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-06-12 22:37:37,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3684. [2021-06-12 22:37:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 3.3497149063263643) internal successors, (12337), 3683 states have internal predecessors, (12337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:37,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 12337 transitions. [2021-06-12 22:37:37,685 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 12337 transitions. Word has length 39 [2021-06-12 22:37:37,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:37,685 INFO L482 AbstractCegarLoop]: Abstraction has 3684 states and 12337 transitions. [2021-06-12 22:37:37,685 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) [2021-06-12 22:37:37,685 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 12337 transitions. [2021-06-12 22:37:37,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:37,689 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:37,689 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:37,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-06-12 22:37:37,689 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:37,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:37,690 INFO L82 PathProgramCache]: Analyzing trace with hash -601355714, now seen corresponding path program 182 times [2021-06-12 22:37:37,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:37,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845303264] [2021-06-12 22:37:37,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:37,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:37,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845303264] [2021-06-12 22:37:37,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845303264] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:37,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:37,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:37,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448242471] [2021-06-12 22:37:37,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:37,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:37,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:37,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:37,850 INFO L87 Difference]: Start difference. First operand 3684 states and 12337 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) [2021-06-12 22:37:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:38,900 INFO L93 Difference]: Finished difference Result 4183 states and 13891 transitions. [2021-06-12 22:37:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-12 22:37:38,900 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 [2021-06-12 22:37:38,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:38,906 INFO L225 Difference]: With dead ends: 4183 [2021-06-12 22:37:38,906 INFO L226 Difference]: Without dead ends: 4116 [2021-06-12 22:37:38,906 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 639.6ms TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2021-06-12 22:37:38,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2021-06-12 22:37:38,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 3712. [2021-06-12 22:37:38,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 3711 states have (on average 3.345998383185125) internal successors, (12417), 3711 states have internal predecessors, (12417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 12417 transitions. [2021-06-12 22:37:38,956 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 12417 transitions. Word has length 39 [2021-06-12 22:37:38,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:38,956 INFO L482 AbstractCegarLoop]: Abstraction has 3712 states and 12417 transitions. [2021-06-12 22:37:38,956 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) [2021-06-12 22:37:38,956 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 12417 transitions. [2021-06-12 22:37:38,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:38,961 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:38,961 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:38,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-06-12 22:37:38,961 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:38,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:38,961 INFO L82 PathProgramCache]: Analyzing trace with hash -773498932, now seen corresponding path program 183 times [2021-06-12 22:37:38,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:38,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345359742] [2021-06-12 22:37:38,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:39,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:39,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:39,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345359742] [2021-06-12 22:37:39,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345359742] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:39,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:39,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:39,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605415790] [2021-06-12 22:37:39,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:39,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:39,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:39,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:39,132 INFO L87 Difference]: Start difference. First operand 3712 states and 12417 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) [2021-06-12 22:37:40,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:40,211 INFO L93 Difference]: Finished difference Result 4171 states and 13851 transitions. [2021-06-12 22:37:40,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:37:40,211 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 [2021-06-12 22:37:40,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:40,217 INFO L225 Difference]: With dead ends: 4171 [2021-06-12 22:37:40,218 INFO L226 Difference]: Without dead ends: 4108 [2021-06-12 22:37:40,218 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 674.0ms TimeCoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:37:40,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-06-12 22:37:40,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3704. [2021-06-12 22:37:40,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3703 states have (on average 3.347826086956522) internal successors, (12397), 3703 states have internal predecessors, (12397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:40,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 12397 transitions. [2021-06-12 22:37:40,278 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 12397 transitions. Word has length 39 [2021-06-12 22:37:40,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:40,279 INFO L482 AbstractCegarLoop]: Abstraction has 3704 states and 12397 transitions. [2021-06-12 22:37:40,279 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) [2021-06-12 22:37:40,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 12397 transitions. [2021-06-12 22:37:40,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:40,282 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:40,282 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:40,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-06-12 22:37:40,283 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:40,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:40,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1809654932, now seen corresponding path program 184 times [2021-06-12 22:37:40,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:40,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728180717] [2021-06-12 22:37:40,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:40,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:40,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728180717] [2021-06-12 22:37:40,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728180717] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:40,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:40,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:40,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963371107] [2021-06-12 22:37:40,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:40,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:40,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:40,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:40,452 INFO L87 Difference]: Start difference. First operand 3704 states and 12397 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) [2021-06-12 22:37:41,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:41,891 INFO L93 Difference]: Finished difference Result 4334 states and 14240 transitions. [2021-06-12 22:37:41,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-12 22:37:41,891 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 [2021-06-12 22:37:41,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:41,897 INFO L225 Difference]: With dead ends: 4334 [2021-06-12 22:37:41,897 INFO L226 Difference]: Without dead ends: 4291 [2021-06-12 22:37:41,897 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 948.1ms TimeCoverageRelationStatistics Valid=323, Invalid=3099, Unknown=0, NotChecked=0, Total=3422 [2021-06-12 22:37:41,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2021-06-12 22:37:41,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 3712. [2021-06-12 22:37:41,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 3711 states have (on average 3.345998383185125) internal successors, (12417), 3711 states have internal predecessors, (12417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:41,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 12417 transitions. [2021-06-12 22:37:41,943 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 12417 transitions. Word has length 39 [2021-06-12 22:37:41,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:41,943 INFO L482 AbstractCegarLoop]: Abstraction has 3712 states and 12417 transitions. [2021-06-12 22:37:41,943 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) [2021-06-12 22:37:41,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 12417 transitions. [2021-06-12 22:37:41,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:41,947 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:41,947 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:41,947 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-06-12 22:37:41,947 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:41,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:41,947 INFO L82 PathProgramCache]: Analyzing trace with hash 704714062, now seen corresponding path program 185 times [2021-06-12 22:37:41,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:41,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296073299] [2021-06-12 22:37:41,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:42,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:42,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296073299] [2021-06-12 22:37:42,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296073299] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:42,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:42,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:42,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164080991] [2021-06-12 22:37:42,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:42,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:42,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:42,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:42,104 INFO L87 Difference]: Start difference. First operand 3712 states and 12417 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) [2021-06-12 22:37:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:43,556 INFO L93 Difference]: Finished difference Result 4322 states and 14202 transitions. [2021-06-12 22:37:43,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-12 22:37:43,556 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 [2021-06-12 22:37:43,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:43,562 INFO L225 Difference]: With dead ends: 4322 [2021-06-12 22:37:43,562 INFO L226 Difference]: Without dead ends: 4270 [2021-06-12 22:37:43,562 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 957.6ms TimeCoverageRelationStatistics Valid=315, Invalid=2991, Unknown=0, NotChecked=0, Total=3306 [2021-06-12 22:37:43,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2021-06-12 22:37:43,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 3704. [2021-06-12 22:37:43,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3703 states have (on average 3.347826086956522) internal successors, (12397), 3703 states have internal predecessors, (12397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:43,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 12397 transitions. [2021-06-12 22:37:43,608 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 12397 transitions. Word has length 39 [2021-06-12 22:37:43,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:43,608 INFO L482 AbstractCegarLoop]: Abstraction has 3704 states and 12397 transitions. [2021-06-12 22:37:43,608 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) [2021-06-12 22:37:43,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 12397 transitions. [2021-06-12 22:37:43,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:43,612 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:43,612 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:43,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-06-12 22:37:43,612 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:43,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:43,612 INFO L82 PathProgramCache]: Analyzing trace with hash -891171362, now seen corresponding path program 186 times [2021-06-12 22:37:43,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:43,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023071737] [2021-06-12 22:37:43,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:43,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:43,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023071737] [2021-06-12 22:37:43,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023071737] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:43,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:43,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:43,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739442458] [2021-06-12 22:37:43,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:43,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:43,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:43,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:43,771 INFO L87 Difference]: Start difference. First operand 3704 states and 12397 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) [2021-06-12 22:37:44,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:44,883 INFO L93 Difference]: Finished difference Result 4299 states and 14125 transitions. [2021-06-12 22:37:44,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-12 22:37:44,883 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 [2021-06-12 22:37:44,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:44,890 INFO L225 Difference]: With dead ends: 4299 [2021-06-12 22:37:44,890 INFO L226 Difference]: Without dead ends: 4244 [2021-06-12 22:37:44,890 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 708.3ms TimeCoverageRelationStatistics Valid=258, Invalid=2292, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:37:44,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2021-06-12 22:37:44,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 3706. [2021-06-12 22:37:44,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3705 states have (on average 3.3468286099865048) internal successors, (12400), 3705 states have internal predecessors, (12400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:44,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 12400 transitions. [2021-06-12 22:37:44,936 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 12400 transitions. Word has length 39 [2021-06-12 22:37:44,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:44,936 INFO L482 AbstractCegarLoop]: Abstraction has 3706 states and 12400 transitions. [2021-06-12 22:37:44,936 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) [2021-06-12 22:37:44,936 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 12400 transitions. [2021-06-12 22:37:44,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:44,940 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:44,940 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:44,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-06-12 22:37:44,940 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:44,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:44,940 INFO L82 PathProgramCache]: Analyzing trace with hash 281480860, now seen corresponding path program 187 times [2021-06-12 22:37:44,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:44,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656448248] [2021-06-12 22:37:44,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:45,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:45,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656448248] [2021-06-12 22:37:45,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656448248] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:45,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:45,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:45,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896012532] [2021-06-12 22:37:45,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:45,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:45,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:45,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:45,121 INFO L87 Difference]: Start difference. First operand 3706 states and 12400 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) [2021-06-12 22:37:46,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:46,155 INFO L93 Difference]: Finished difference Result 4234 states and 13973 transitions. [2021-06-12 22:37:46,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:37:46,155 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 [2021-06-12 22:37:46,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:46,161 INFO L225 Difference]: With dead ends: 4234 [2021-06-12 22:37:46,161 INFO L226 Difference]: Without dead ends: 4188 [2021-06-12 22:37:46,162 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 650.2ms TimeCoverageRelationStatistics Valid=233, Invalid=2023, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:37:46,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2021-06-12 22:37:46,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 3710. [2021-06-12 22:37:46,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3710 states, 3709 states have (on average 3.3453761121596117) internal successors, (12408), 3709 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) [2021-06-12 22:37:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 12408 transitions. [2021-06-12 22:37:46,210 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 12408 transitions. Word has length 39 [2021-06-12 22:37:46,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:46,210 INFO L482 AbstractCegarLoop]: Abstraction has 3710 states and 12408 transitions. [2021-06-12 22:37:46,211 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) [2021-06-12 22:37:46,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 12408 transitions. [2021-06-12 22:37:46,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:46,214 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:46,214 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:46,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-06-12 22:37:46,215 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:46,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:46,215 INFO L82 PathProgramCache]: Analyzing trace with hash 34014698, now seen corresponding path program 188 times [2021-06-12 22:37:46,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:46,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464228357] [2021-06-12 22:37:46,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:46,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:46,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464228357] [2021-06-12 22:37:46,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464228357] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:46,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:46,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:46,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312560967] [2021-06-12 22:37:46,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:46,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:46,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:46,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:46,371 INFO L87 Difference]: Start difference. First operand 3710 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) [2021-06-12 22:37:47,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:47,565 INFO L93 Difference]: Finished difference Result 4218 states and 13962 transitions. [2021-06-12 22:37:47,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:37:47,565 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 [2021-06-12 22:37:47,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:47,571 INFO L225 Difference]: With dead ends: 4218 [2021-06-12 22:37:47,571 INFO L226 Difference]: Without dead ends: 4169 [2021-06-12 22:37:47,572 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 782.8ms TimeCoverageRelationStatistics Valid=263, Invalid=2287, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:37:47,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4169 states. [2021-06-12 22:37:47,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4169 to 3700. [2021-06-12 22:37:47,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3700 states, 3699 states have (on average 3.348742903487429) internal successors, (12387), 3699 states have internal predecessors, (12387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:47,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3700 states to 3700 states and 12387 transitions. [2021-06-12 22:37:47,617 INFO L78 Accepts]: Start accepts. Automaton has 3700 states and 12387 transitions. Word has length 39 [2021-06-12 22:37:47,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:47,617 INFO L482 AbstractCegarLoop]: Abstraction has 3700 states and 12387 transitions. [2021-06-12 22:37:47,617 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) [2021-06-12 22:37:47,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3700 states and 12387 transitions. [2021-06-12 22:37:47,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:47,621 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:47,621 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:47,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-06-12 22:37:47,621 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:47,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:47,621 INFO L82 PathProgramCache]: Analyzing trace with hash 737400874, now seen corresponding path program 189 times [2021-06-12 22:37:47,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:47,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275550893] [2021-06-12 22:37:47,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:47,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:47,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:47,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275550893] [2021-06-12 22:37:47,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275550893] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:47,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:47,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:47,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234830266] [2021-06-12 22:37:47,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:47,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:47,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:47,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:47,785 INFO L87 Difference]: Start difference. First operand 3700 states and 12387 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) [2021-06-12 22:37:48,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:48,788 INFO L93 Difference]: Finished difference Result 4155 states and 13831 transitions. [2021-06-12 22:37:48,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-12 22:37:48,788 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 [2021-06-12 22:37:48,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:48,794 INFO L225 Difference]: With dead ends: 4155 [2021-06-12 22:37:48,795 INFO L226 Difference]: Without dead ends: 4088 [2021-06-12 22:37:48,795 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 576.7ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-06-12 22:37:48,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4088 states. [2021-06-12 22:37:48,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4088 to 3740. [2021-06-12 22:37:48,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3740 states, 3739 states have (on average 3.3418026210216634) internal successors, (12495), 3739 states have internal predecessors, (12495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:48,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3740 states to 3740 states and 12495 transitions. [2021-06-12 22:37:48,841 INFO L78 Accepts]: Start accepts. Automaton has 3740 states and 12495 transitions. Word has length 39 [2021-06-12 22:37:48,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:48,841 INFO L482 AbstractCegarLoop]: Abstraction has 3740 states and 12495 transitions. [2021-06-12 22:37:48,841 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) [2021-06-12 22:37:48,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3740 states and 12495 transitions. [2021-06-12 22:37:48,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:48,845 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:48,845 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:48,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-06-12 22:37:48,845 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:48,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:48,845 INFO L82 PathProgramCache]: Analyzing trace with hash 565257656, now seen corresponding path program 190 times [2021-06-12 22:37:48,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:48,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441558820] [2021-06-12 22:37:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:49,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:49,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441558820] [2021-06-12 22:37:49,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441558820] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:49,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:49,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:49,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678666705] [2021-06-12 22:37:49,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:49,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:49,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:49,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:49,002 INFO L87 Difference]: Start difference. First operand 3740 states and 12495 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) [2021-06-12 22:37:50,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:50,027 INFO L93 Difference]: Finished difference Result 4143 states and 13791 transitions. [2021-06-12 22:37:50,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-12 22:37:50,028 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 [2021-06-12 22:37:50,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:50,034 INFO L225 Difference]: With dead ends: 4143 [2021-06-12 22:37:50,034 INFO L226 Difference]: Without dead ends: 4080 [2021-06-12 22:37:50,034 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 600.9ms TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2021-06-12 22:37:50,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4080 states. [2021-06-12 22:37:50,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4080 to 3732. [2021-06-12 22:37:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3732 states, 3731 states have (on average 3.3425355132672205) internal successors, (12471), 3731 states have internal predecessors, (12471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 12471 transitions. [2021-06-12 22:37:50,079 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 12471 transitions. Word has length 39 [2021-06-12 22:37:50,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:50,079 INFO L482 AbstractCegarLoop]: Abstraction has 3732 states and 12471 transitions. [2021-06-12 22:37:50,079 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) [2021-06-12 22:37:50,079 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 12471 transitions. [2021-06-12 22:37:50,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:50,083 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:50,083 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:50,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-06-12 22:37:50,083 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:50,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:50,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1237576500, now seen corresponding path program 191 times [2021-06-12 22:37:50,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:50,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40862174] [2021-06-12 22:37:50,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:50,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:50,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:50,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40862174] [2021-06-12 22:37:50,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40862174] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:50,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:50,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:50,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571526145] [2021-06-12 22:37:50,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:50,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:50,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:50,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:50,240 INFO L87 Difference]: Start difference. First operand 3732 states and 12471 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) [2021-06-12 22:37:51,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:51,269 INFO L93 Difference]: Finished difference Result 4167 states and 13851 transitions. [2021-06-12 22:37:51,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-12 22:37:51,269 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 [2021-06-12 22:37:51,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:51,275 INFO L225 Difference]: With dead ends: 4167 [2021-06-12 22:37:51,275 INFO L226 Difference]: Without dead ends: 4044 [2021-06-12 22:37:51,276 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 590.7ms TimeCoverageRelationStatistics Valid=195, Invalid=1785, Unknown=0, NotChecked=0, Total=1980 [2021-06-12 22:37:51,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4044 states. [2021-06-12 22:37:51,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4044 to 3684. [2021-06-12 22:37:51,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 3.3497149063263643) internal successors, (12337), 3683 states have internal predecessors, (12337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:51,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 12337 transitions. [2021-06-12 22:37:51,337 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 12337 transitions. Word has length 39 [2021-06-12 22:37:51,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:51,337 INFO L482 AbstractCegarLoop]: Abstraction has 3684 states and 12337 transitions. [2021-06-12 22:37:51,337 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) [2021-06-12 22:37:51,337 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 12337 transitions. [2021-06-12 22:37:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:51,341 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:51,341 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:51,342 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-06-12 22:37:51,342 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:51,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:51,342 INFO L82 PathProgramCache]: Analyzing trace with hash 193983754, now seen corresponding path program 192 times [2021-06-12 22:37:51,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:51,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523669286] [2021-06-12 22:37:51,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:51,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:51,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:51,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523669286] [2021-06-12 22:37:51,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523669286] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:51,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:51,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:51,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254031481] [2021-06-12 22:37:51,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:51,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:51,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:51,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:51,502 INFO L87 Difference]: Start difference. First operand 3684 states and 12337 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) [2021-06-12 22:37:53,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:53,363 INFO L93 Difference]: Finished difference Result 6284 states and 21185 transitions. [2021-06-12 22:37:53,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-12 22:37:53,364 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 [2021-06-12 22:37:53,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:53,372 INFO L225 Difference]: With dead ends: 6284 [2021-06-12 22:37:53,372 INFO L226 Difference]: Without dead ends: 6241 [2021-06-12 22:37:53,373 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1104.6ms TimeCoverageRelationStatistics Valid=399, Invalid=4157, Unknown=0, NotChecked=0, Total=4556 [2021-06-12 22:37:53,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2021-06-12 22:37:53,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 3912. [2021-06-12 22:37:53,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3912 states, 3911 states have (on average 3.3623114293019687) internal successors, (13150), 3911 states have internal predecessors, (13150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:53,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 13150 transitions. [2021-06-12 22:37:53,430 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 13150 transitions. Word has length 39 [2021-06-12 22:37:53,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:53,430 INFO L482 AbstractCegarLoop]: Abstraction has 3912 states and 13150 transitions. [2021-06-12 22:37:53,430 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) [2021-06-12 22:37:53,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 13150 transitions. [2021-06-12 22:37:53,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:53,434 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:53,434 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:53,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-06-12 22:37:53,434 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:53,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:53,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1586614548, now seen corresponding path program 193 times [2021-06-12 22:37:53,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:53,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484008716] [2021-06-12 22:37:53,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:53,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:53,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484008716] [2021-06-12 22:37:53,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484008716] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:53,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:53,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:53,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299647015] [2021-06-12 22:37:53,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:53,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:53,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:53,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:53,592 INFO L87 Difference]: Start difference. First operand 3912 states and 13150 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) [2021-06-12 22:37:55,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:55,731 INFO L93 Difference]: Finished difference Result 7189 states and 24259 transitions. [2021-06-12 22:37:55,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-12 22:37:55,732 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 [2021-06-12 22:37:55,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:55,742 INFO L225 Difference]: With dead ends: 7189 [2021-06-12 22:37:55,742 INFO L226 Difference]: Without dead ends: 7137 [2021-06-12 22:37:55,743 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 1259.0ms TimeCoverageRelationStatistics Valid=448, Invalid=5102, Unknown=0, NotChecked=0, Total=5550 [2021-06-12 22:37:55,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7137 states. [2021-06-12 22:37:55,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7137 to 3882. [2021-06-12 22:37:55,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 3881 states have (on average 3.3638237567637206) internal successors, (13055), 3881 states have internal predecessors, (13055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:55,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 13055 transitions. [2021-06-12 22:37:55,804 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 13055 transitions. Word has length 39 [2021-06-12 22:37:55,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:55,804 INFO L482 AbstractCegarLoop]: Abstraction has 3882 states and 13055 transitions. [2021-06-12 22:37:55,804 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) [2021-06-12 22:37:55,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 13055 transitions. [2021-06-12 22:37:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:55,808 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:55,808 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:55,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-06-12 22:37:55,809 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:55,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:55,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1112467324, now seen corresponding path program 194 times [2021-06-12 22:37:55,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:55,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144049287] [2021-06-12 22:37:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:55,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:55,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:55,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144049287] [2021-06-12 22:37:55,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144049287] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:55,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:55,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:55,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277833694] [2021-06-12 22:37:55,964 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:55,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:55,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:55,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:55,964 INFO L87 Difference]: Start difference. First operand 3882 states and 13055 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) [2021-06-12 22:37:57,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:57,287 INFO L93 Difference]: Finished difference Result 6209 states and 20838 transitions. [2021-06-12 22:37:57,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-12 22:37:57,288 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 [2021-06-12 22:37:57,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:57,297 INFO L225 Difference]: With dead ends: 6209 [2021-06-12 22:37:57,297 INFO L226 Difference]: Without dead ends: 6154 [2021-06-12 22:37:57,297 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 727.9ms TimeCoverageRelationStatistics Valid=262, Invalid=2390, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:37:57,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2021-06-12 22:37:57,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 4087. [2021-06-12 22:37:57,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4087 states, 4086 states have (on average 3.3805677924620654) internal successors, (13813), 4086 states have internal predecessors, (13813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:57,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4087 states to 4087 states and 13813 transitions. [2021-06-12 22:37:57,357 INFO L78 Accepts]: Start accepts. Automaton has 4087 states and 13813 transitions. Word has length 39 [2021-06-12 22:37:57,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:57,357 INFO L482 AbstractCegarLoop]: Abstraction has 4087 states and 13813 transitions. [2021-06-12 22:37:57,357 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) [2021-06-12 22:37:57,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4087 states and 13813 transitions. [2021-06-12 22:37:57,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:57,361 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:57,361 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:57,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-06-12 22:37:57,361 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:57,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:57,362 INFO L82 PathProgramCache]: Analyzing trace with hash -2009847750, now seen corresponding path program 195 times [2021-06-12 22:37:57,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:57,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59874136] [2021-06-12 22:37:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:57,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:57,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59874136] [2021-06-12 22:37:57,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59874136] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:57,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:57,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:57,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053721323] [2021-06-12 22:37:57,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:57,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:57,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:57,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:57,521 INFO L87 Difference]: Start difference. First operand 4087 states and 13813 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) [2021-06-12 22:37:59,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:37:59,148 INFO L93 Difference]: Finished difference Result 7114 states and 23916 transitions. [2021-06-12 22:37:59,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-12 22:37:59,149 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 [2021-06-12 22:37:59,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:37:59,159 INFO L225 Difference]: With dead ends: 7114 [2021-06-12 22:37:59,160 INFO L226 Difference]: Without dead ends: 7054 [2021-06-12 22:37:59,160 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 872.2ms TimeCoverageRelationStatistics Valid=300, Invalid=3006, Unknown=0, NotChecked=0, Total=3306 [2021-06-12 22:37:59,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7054 states. [2021-06-12 22:37:59,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7054 to 4085. [2021-06-12 22:37:59,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4085 states, 4084 states have (on average 3.3809990205680704) internal successors, (13808), 4084 states have internal predecessors, (13808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:37:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4085 states to 4085 states and 13808 transitions. [2021-06-12 22:37:59,224 INFO L78 Accepts]: Start accepts. Automaton has 4085 states and 13808 transitions. Word has length 39 [2021-06-12 22:37:59,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:37:59,224 INFO L482 AbstractCegarLoop]: Abstraction has 4085 states and 13808 transitions. [2021-06-12 22:37:59,224 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) [2021-06-12 22:37:59,224 INFO L276 IsEmpty]: Start isEmpty. Operand 4085 states and 13808 transitions. [2021-06-12 22:37:59,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:37:59,245 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:37:59,246 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:37:59,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-06-12 22:37:59,246 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:37:59,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:37:59,246 INFO L82 PathProgramCache]: Analyzing trace with hash 407715944, now seen corresponding path program 196 times [2021-06-12 22:37:59,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:37:59,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695431831] [2021-06-12 22:37:59,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:37:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:37:59,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:37:59,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:37:59,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695431831] [2021-06-12 22:37:59,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695431831] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:37:59,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:37:59,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:37:59,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129070295] [2021-06-12 22:37:59,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:37:59,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:37:59,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:37:59,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:37:59,407 INFO L87 Difference]: Start difference. First operand 4085 states and 13808 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) [2021-06-12 22:38:00,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:00,700 INFO L93 Difference]: Finished difference Result 6178 states and 20792 transitions. [2021-06-12 22:38:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:38:00,701 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 [2021-06-12 22:38:00,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:00,710 INFO L225 Difference]: With dead ends: 6178 [2021-06-12 22:38:00,710 INFO L226 Difference]: Without dead ends: 6087 [2021-06-12 22:38:00,710 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 697.8ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:38:00,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6087 states. [2021-06-12 22:38:00,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6087 to 4085. [2021-06-12 22:38:00,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4085 states, 4084 states have (on average 3.379529872673849) internal successors, (13802), 4084 states have internal predecessors, (13802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:00,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4085 states to 4085 states and 13802 transitions. [2021-06-12 22:38:00,795 INFO L78 Accepts]: Start accepts. Automaton has 4085 states and 13802 transitions. Word has length 39 [2021-06-12 22:38:00,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:00,795 INFO L482 AbstractCegarLoop]: Abstraction has 4085 states and 13802 transitions. [2021-06-12 22:38:00,795 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) [2021-06-12 22:38:00,795 INFO L276 IsEmpty]: Start isEmpty. Operand 4085 states and 13802 transitions. [2021-06-12 22:38:00,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:00,799 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:00,799 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:00,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-06-12 22:38:00,800 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:00,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:00,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1094766262, now seen corresponding path program 197 times [2021-06-12 22:38:00,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:00,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646002743] [2021-06-12 22:38:00,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:00,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:00,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646002743] [2021-06-12 22:38:00,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646002743] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:00,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:00,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:00,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612477263] [2021-06-12 22:38:00,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:00,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:00,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:00,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:00,956 INFO L87 Difference]: Start difference. First operand 4085 states and 13802 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) [2021-06-12 22:38:02,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:02,615 INFO L93 Difference]: Finished difference Result 7266 states and 24407 transitions. [2021-06-12 22:38:02,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-12 22:38:02,615 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 [2021-06-12 22:38:02,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:02,626 INFO L225 Difference]: With dead ends: 7266 [2021-06-12 22:38:02,626 INFO L226 Difference]: Without dead ends: 7087 [2021-06-12 22:38:02,626 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 847.9ms TimeCoverageRelationStatistics Valid=290, Invalid=3016, Unknown=0, NotChecked=0, Total=3306 [2021-06-12 22:38:02,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7087 states. [2021-06-12 22:38:02,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7087 to 4266. [2021-06-12 22:38:02,685 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) [2021-06-12 22:38:02,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4266 states to 4266 states and 14420 transitions. [2021-06-12 22:38:02,692 INFO L78 Accepts]: Start accepts. Automaton has 4266 states and 14420 transitions. Word has length 39 [2021-06-12 22:38:02,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:02,692 INFO L482 AbstractCegarLoop]: Abstraction has 4266 states and 14420 transitions. [2021-06-12 22:38:02,692 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) [2021-06-12 22:38:02,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4266 states and 14420 transitions. [2021-06-12 22:38:02,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:02,696 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:02,696 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:02,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-06-12 22:38:02,696 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:02,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:02,697 INFO L82 PathProgramCache]: Analyzing trace with hash -358048246, now seen corresponding path program 198 times [2021-06-12 22:38:02,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:02,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804571980] [2021-06-12 22:38:02,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:02,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:02,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804571980] [2021-06-12 22:38:02,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804571980] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:02,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:02,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:02,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074543643] [2021-06-12 22:38:02,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:02,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:02,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:02,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:02,857 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) [2021-06-12 22:38:04,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:04,319 INFO L93 Difference]: Finished difference Result 4817 states and 16072 transitions. [2021-06-12 22:38:04,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-12 22:38:04,320 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 [2021-06-12 22:38:04,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:04,326 INFO L225 Difference]: With dead ends: 4817 [2021-06-12 22:38:04,327 INFO L226 Difference]: Without dead ends: 4711 [2021-06-12 22:38:04,327 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 905.4ms TimeCoverageRelationStatistics Valid=272, Invalid=2698, Unknown=0, NotChecked=0, Total=2970 [2021-06-12 22:38:04,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2021-06-12 22:38:04,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 4288. [2021-06-12 22:38:04,373 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) [2021-06-12 22:38:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 14496 transitions. [2021-06-12 22:38:04,379 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 14496 transitions. Word has length 39 [2021-06-12 22:38:04,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:04,379 INFO L482 AbstractCegarLoop]: Abstraction has 4288 states and 14496 transitions. [2021-06-12 22:38:04,379 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) [2021-06-12 22:38:04,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 14496 transitions. [2021-06-12 22:38:04,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:04,383 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:04,383 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:04,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-06-12 22:38:04,383 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:04,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:04,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1852939146, now seen corresponding path program 199 times [2021-06-12 22:38:04,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:04,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286286452] [2021-06-12 22:38:04,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:04,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:04,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:04,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286286452] [2021-06-12 22:38:04,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286286452] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:04,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:04,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:04,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417544728] [2021-06-12 22:38:04,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:04,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:04,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:04,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:04,541 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) [2021-06-12 22:38:05,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:05,877 INFO L93 Difference]: Finished difference Result 4854 states and 16096 transitions. [2021-06-12 22:38:05,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-12 22:38:05,877 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 [2021-06-12 22:38:05,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:05,884 INFO L225 Difference]: With dead ends: 4854 [2021-06-12 22:38:05,884 INFO L226 Difference]: Without dead ends: 4790 [2021-06-12 22:38:05,885 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 880.9ms TimeCoverageRelationStatistics Valid=287, Invalid=2793, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:38:05,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4790 states. [2021-06-12 22:38:05,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 4304. [2021-06-12 22:38:05,932 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) [2021-06-12 22:38:05,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 14548 transitions. [2021-06-12 22:38:05,938 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 14548 transitions. Word has length 39 [2021-06-12 22:38:05,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:05,938 INFO L482 AbstractCegarLoop]: Abstraction has 4304 states and 14548 transitions. [2021-06-12 22:38:05,938 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) [2021-06-12 22:38:05,938 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 14548 transitions. [2021-06-12 22:38:05,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:05,943 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:05,943 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:05,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-06-12 22:38:05,943 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:05,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:05,943 INFO L82 PathProgramCache]: Analyzing trace with hash -934455576, now seen corresponding path program 200 times [2021-06-12 22:38:05,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:05,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933688322] [2021-06-12 22:38:05,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:06,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:06,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:06,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933688322] [2021-06-12 22:38:06,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933688322] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:06,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:06,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:06,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35560918] [2021-06-12 22:38:06,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:06,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:06,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:06,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:06,111 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) [2021-06-12 22:38:07,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:07,085 INFO L93 Difference]: Finished difference Result 4752 states and 15828 transitions. [2021-06-12 22:38:07,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-12 22:38:07,086 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 [2021-06-12 22:38:07,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:07,093 INFO L225 Difference]: With dead ends: 4752 [2021-06-12 22:38:07,093 INFO L226 Difference]: Without dead ends: 4709 [2021-06-12 22:38:07,094 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 615.1ms TimeCoverageRelationStatistics Valid=203, Invalid=1867, Unknown=0, NotChecked=0, Total=2070 [2021-06-12 22:38:07,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4709 states. [2021-06-12 22:38:07,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4709 to 4310. [2021-06-12 22:38:07,159 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) [2021-06-12 22:38:07,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 14561 transitions. [2021-06-12 22:38:07,165 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 14561 transitions. Word has length 39 [2021-06-12 22:38:07,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:07,165 INFO L482 AbstractCegarLoop]: Abstraction has 4310 states and 14561 transitions. [2021-06-12 22:38:07,165 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) [2021-06-12 22:38:07,166 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 14561 transitions. [2021-06-12 22:38:07,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:07,170 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:07,170 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:07,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-06-12 22:38:07,170 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:07,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:07,170 INFO L82 PathProgramCache]: Analyzing trace with hash -914306842, now seen corresponding path program 201 times [2021-06-12 22:38:07,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:07,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830110079] [2021-06-12 22:38:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:07,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:07,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830110079] [2021-06-12 22:38:07,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830110079] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:07,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:07,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:07,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896306307] [2021-06-12 22:38:07,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:07,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:07,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:07,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:07,333 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) [2021-06-12 22:38:08,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:08,437 INFO L93 Difference]: Finished difference Result 4723 states and 15772 transitions. [2021-06-12 22:38:08,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:38:08,437 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 [2021-06-12 22:38:08,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:08,445 INFO L225 Difference]: With dead ends: 4723 [2021-06-12 22:38:08,445 INFO L226 Difference]: Without dead ends: 4680 [2021-06-12 22:38:08,445 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 729.1ms TimeCoverageRelationStatistics Valid=230, Invalid=2122, Unknown=0, NotChecked=0, Total=2352 [2021-06-12 22:38:08,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2021-06-12 22:38:08,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 4306. [2021-06-12 22:38:08,494 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) [2021-06-12 22:38:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4306 states to 4306 states and 14551 transitions. [2021-06-12 22:38:08,501 INFO L78 Accepts]: Start accepts. Automaton has 4306 states and 14551 transitions. Word has length 39 [2021-06-12 22:38:08,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:08,501 INFO L482 AbstractCegarLoop]: Abstraction has 4306 states and 14551 transitions. [2021-06-12 22:38:08,501 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) [2021-06-12 22:38:08,501 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states and 14551 transitions. [2021-06-12 22:38:08,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:08,505 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:08,506 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:08,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-06-12 22:38:08,506 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:08,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:08,506 INFO L82 PathProgramCache]: Analyzing trace with hash 238196646, now seen corresponding path program 202 times [2021-06-12 22:38:08,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:08,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070442911] [2021-06-12 22:38:08,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:08,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:08,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070442911] [2021-06-12 22:38:08,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070442911] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:08,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:08,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:08,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975095468] [2021-06-12 22:38:08,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:08,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:08,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:08,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:08,691 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) [2021-06-12 22:38:09,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:09,699 INFO L93 Difference]: Finished difference Result 4730 states and 15787 transitions. [2021-06-12 22:38:09,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-12 22:38:09,699 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 [2021-06-12 22:38:09,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:09,707 INFO L225 Difference]: With dead ends: 4730 [2021-06-12 22:38:09,707 INFO L226 Difference]: Without dead ends: 4670 [2021-06-12 22:38:09,708 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 676.1ms TimeCoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:38:09,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2021-06-12 22:38:09,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 4304. [2021-06-12 22:38:09,759 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) [2021-06-12 22:38:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 14546 transitions. [2021-06-12 22:38:09,766 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 14546 transitions. Word has length 39 [2021-06-12 22:38:09,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:09,766 INFO L482 AbstractCegarLoop]: Abstraction has 4304 states and 14546 transitions. [2021-06-12 22:38:09,766 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) [2021-06-12 22:38:09,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 14546 transitions. [2021-06-12 22:38:09,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:09,771 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:09,771 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:09,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-06-12 22:38:09,771 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:09,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:09,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1841369896, now seen corresponding path program 203 times [2021-06-12 22:38:09,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:09,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590017862] [2021-06-12 22:38:09,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:09,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:09,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:09,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590017862] [2021-06-12 22:38:09,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590017862] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:09,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:09,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:38:09,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982497290] [2021-06-12 22:38:09,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:38:09,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:09,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:38:09,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:38:09,918 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) [2021-06-12 22:38:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:10,795 INFO L93 Difference]: Finished difference Result 4698 states and 15727 transitions. [2021-06-12 22:38:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-12 22:38:10,796 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 [2021-06-12 22:38:10,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:10,803 INFO L225 Difference]: With dead ends: 4698 [2021-06-12 22:38:10,803 INFO L226 Difference]: Without dead ends: 4622 [2021-06-12 22:38:10,803 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 558.6ms TimeCoverageRelationStatistics Valid=177, Invalid=1545, Unknown=0, NotChecked=0, Total=1722 [2021-06-12 22:38:10,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2021-06-12 22:38:10,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 4312. [2021-06-12 22:38:10,851 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) [2021-06-12 22:38:10,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 14562 transitions. [2021-06-12 22:38:10,858 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 14562 transitions. Word has length 39 [2021-06-12 22:38:10,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:10,858 INFO L482 AbstractCegarLoop]: Abstraction has 4312 states and 14562 transitions. [2021-06-12 22:38:10,858 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) [2021-06-12 22:38:10,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 14562 transitions. [2021-06-12 22:38:10,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:10,862 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:10,862 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:10,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-06-12 22:38:10,862 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:10,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:10,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1435543788, now seen corresponding path program 204 times [2021-06-12 22:38:10,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:10,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462521564] [2021-06-12 22:38:10,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:11,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:11,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462521564] [2021-06-12 22:38:11,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462521564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:11,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:11,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:11,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915119277] [2021-06-12 22:38:11,021 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:11,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:11,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:11,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:11,021 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) [2021-06-12 22:38:12,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:12,012 INFO L93 Difference]: Finished difference Result 4680 states and 15673 transitions. [2021-06-12 22:38:12,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-12 22:38:12,012 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 [2021-06-12 22:38:12,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:12,019 INFO L225 Difference]: With dead ends: 4680 [2021-06-12 22:38:12,019 INFO L226 Difference]: Without dead ends: 4610 [2021-06-12 22:38:12,019 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 625.6ms TimeCoverageRelationStatistics Valid=193, Invalid=1787, Unknown=0, NotChecked=0, Total=1980 [2021-06-12 22:38:12,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2021-06-12 22:38:12,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4300. [2021-06-12 22:38:12,065 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) [2021-06-12 22:38:12,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14534 transitions. [2021-06-12 22:38:12,071 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14534 transitions. Word has length 39 [2021-06-12 22:38:12,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:12,071 INFO L482 AbstractCegarLoop]: Abstraction has 4300 states and 14534 transitions. [2021-06-12 22:38:12,071 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) [2021-06-12 22:38:12,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14534 transitions. [2021-06-12 22:38:12,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:12,076 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:12,076 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:12,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-06-12 22:38:12,076 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:12,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:12,076 INFO L82 PathProgramCache]: Analyzing trace with hash -2013239828, now seen corresponding path program 205 times [2021-06-12 22:38:12,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:12,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568394043] [2021-06-12 22:38:12,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:12,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:12,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:12,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568394043] [2021-06-12 22:38:12,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568394043] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:12,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:12,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:12,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341690700] [2021-06-12 22:38:12,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:12,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:12,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:12,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:12,233 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) [2021-06-12 22:38:14,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:14,017 INFO L93 Difference]: Finished difference Result 6858 states and 23172 transitions. [2021-06-12 22:38:14,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-12 22:38:14,017 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 [2021-06-12 22:38:14,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:14,028 INFO L225 Difference]: With dead ends: 6858 [2021-06-12 22:38:14,028 INFO L226 Difference]: Without dead ends: 6815 [2021-06-12 22:38:14,029 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 1085.3ms TimeCoverageRelationStatistics Valid=380, Invalid=3910, Unknown=0, NotChecked=0, Total=4290 [2021-06-12 22:38:14,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6815 states. [2021-06-12 22:38:14,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6815 to 4326. [2021-06-12 22:38:14,087 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) [2021-06-12 22:38:14,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 14617 transitions. [2021-06-12 22:38:14,093 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 14617 transitions. Word has length 39 [2021-06-12 22:38:14,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:14,093 INFO L482 AbstractCegarLoop]: Abstraction has 4326 states and 14617 transitions. [2021-06-12 22:38:14,093 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) [2021-06-12 22:38:14,093 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 14617 transitions. [2021-06-12 22:38:14,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:14,098 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:14,098 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:14,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-06-12 22:38:14,098 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:14,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:14,098 INFO L82 PathProgramCache]: Analyzing trace with hash 501129166, now seen corresponding path program 206 times [2021-06-12 22:38:14,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:14,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035602690] [2021-06-12 22:38:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:14,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:14,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:14,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035602690] [2021-06-12 22:38:14,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035602690] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:14,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:14,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:14,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181932937] [2021-06-12 22:38:14,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:14,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:14,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:14,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:14,260 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) [2021-06-12 22:38:16,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:16,346 INFO L93 Difference]: Finished difference Result 7715 states and 26114 transitions. [2021-06-12 22:38:16,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-12 22:38:16,346 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 [2021-06-12 22:38:16,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:16,358 INFO L225 Difference]: With dead ends: 7715 [2021-06-12 22:38:16,358 INFO L226 Difference]: Without dead ends: 7663 [2021-06-12 22:38:16,359 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1544 ImplicationChecksByTransitivity, 1239.7ms TimeCoverageRelationStatistics Valid=429, Invalid=4827, Unknown=0, NotChecked=0, Total=5256 [2021-06-12 22:38:16,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7663 states. [2021-06-12 22:38:16,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7663 to 4300. [2021-06-12 22:38:16,423 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) [2021-06-12 22:38:16,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14534 transitions. [2021-06-12 22:38:16,429 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14534 transitions. Word has length 39 [2021-06-12 22:38:16,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:16,429 INFO L482 AbstractCegarLoop]: Abstraction has 4300 states and 14534 transitions. [2021-06-12 22:38:16,429 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) [2021-06-12 22:38:16,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14534 transitions. [2021-06-12 22:38:16,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:16,453 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:16,453 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:16,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-06-12 22:38:16,453 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:16,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:16,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1094756258, now seen corresponding path program 207 times [2021-06-12 22:38:16,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:16,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558236233] [2021-06-12 22:38:16,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:16,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:16,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558236233] [2021-06-12 22:38:16,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558236233] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:16,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:16,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:16,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623237577] [2021-06-12 22:38:16,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:16,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:16,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:16,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:16,623 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) [2021-06-12 22:38:17,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:17,835 INFO L93 Difference]: Finished difference Result 6351 states and 21238 transitions. [2021-06-12 22:38:17,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:38:17,835 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 [2021-06-12 22:38:17,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:17,845 INFO L225 Difference]: With dead ends: 6351 [2021-06-12 22:38:17,845 INFO L226 Difference]: Without dead ends: 6296 [2021-06-12 22:38:17,845 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 681.2ms TimeCoverageRelationStatistics Valid=232, Invalid=2120, Unknown=0, NotChecked=0, Total=2352 [2021-06-12 22:38:17,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6296 states. [2021-06-12 22:38:17,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6296 to 4320. [2021-06-12 22:38:17,902 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) [2021-06-12 22:38:17,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4320 states to 4320 states and 14600 transitions. [2021-06-12 22:38:17,908 INFO L78 Accepts]: Start accepts. Automaton has 4320 states and 14600 transitions. Word has length 39 [2021-06-12 22:38:17,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:17,908 INFO L482 AbstractCegarLoop]: Abstraction has 4320 states and 14600 transitions. [2021-06-12 22:38:17,908 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) [2021-06-12 22:38:17,909 INFO L276 IsEmpty]: Start isEmpty. Operand 4320 states and 14600 transitions. [2021-06-12 22:38:17,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:17,913 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:17,913 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:17,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-06-12 22:38:17,913 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:17,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:17,914 INFO L82 PathProgramCache]: Analyzing trace with hash 77895964, now seen corresponding path program 208 times [2021-06-12 22:38:17,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:17,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585288157] [2021-06-12 22:38:17,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:18,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:18,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:18,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585288157] [2021-06-12 22:38:18,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585288157] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:18,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:18,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:18,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899351821] [2021-06-12 22:38:18,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:18,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:18,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:18,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:18,090 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) [2021-06-12 22:38:19,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:19,737 INFO L93 Difference]: Finished difference Result 7052 states and 23686 transitions. [2021-06-12 22:38:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-12 22:38:19,737 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 [2021-06-12 22:38:19,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:19,763 INFO L225 Difference]: With dead ends: 7052 [2021-06-12 22:38:19,763 INFO L226 Difference]: Without dead ends: 6992 [2021-06-12 22:38:19,764 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 930.8ms TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-06-12 22:38:19,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6992 states. [2021-06-12 22:38:19,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6992 to 4318. [2021-06-12 22:38:19,821 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) [2021-06-12 22:38:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 14595 transitions. [2021-06-12 22:38:19,828 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 14595 transitions. Word has length 39 [2021-06-12 22:38:19,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:19,828 INFO L482 AbstractCegarLoop]: Abstraction has 4318 states and 14595 transitions. [2021-06-12 22:38:19,828 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) [2021-06-12 22:38:19,828 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 14595 transitions. [2021-06-12 22:38:19,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:19,832 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:19,832 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:19,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-06-12 22:38:19,832 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:19,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:19,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1799507638, now seen corresponding path program 209 times [2021-06-12 22:38:19,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:19,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380650890] [2021-06-12 22:38:19,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:19,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:19,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:19,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380650890] [2021-06-12 22:38:19,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380650890] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:19,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:19,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:19,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409983285] [2021-06-12 22:38:19,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:19,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:19,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:19,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:19,991 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) [2021-06-12 22:38:21,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:21,176 INFO L93 Difference]: Finished difference Result 6272 states and 21064 transitions. [2021-06-12 22:38:21,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:38:21,176 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 [2021-06-12 22:38:21,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:21,186 INFO L225 Difference]: With dead ends: 6272 [2021-06-12 22:38:21,186 INFO L226 Difference]: Without dead ends: 6181 [2021-06-12 22:38:21,186 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 636.1ms TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:38:21,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2021-06-12 22:38:21,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 4318. [2021-06-12 22:38:21,261 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) [2021-06-12 22:38:21,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 14589 transitions. [2021-06-12 22:38:21,268 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 14589 transitions. Word has length 39 [2021-06-12 22:38:21,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:21,268 INFO L482 AbstractCegarLoop]: Abstraction has 4318 states and 14589 transitions. [2021-06-12 22:38:21,268 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) [2021-06-12 22:38:21,268 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 14589 transitions. [2021-06-12 22:38:21,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:21,273 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:21,273 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:21,273 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-06-12 22:38:21,273 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:21,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:21,273 INFO L82 PathProgramCache]: Analyzing trace with hash 992977452, now seen corresponding path program 210 times [2021-06-12 22:38:21,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:21,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578500142] [2021-06-12 22:38:21,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:21,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:21,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578500142] [2021-06-12 22:38:21,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578500142] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:21,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:21,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:21,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828911532] [2021-06-12 22:38:21,430 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:21,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:21,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:21,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:21,431 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) [2021-06-12 22:38:23,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:23,109 INFO L93 Difference]: Finished difference Result 7142 states and 24051 transitions. [2021-06-12 22:38:23,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-12 22:38:23,109 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 [2021-06-12 22:38:23,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:23,119 INFO L225 Difference]: With dead ends: 7142 [2021-06-12 22:38:23,120 INFO L226 Difference]: Without dead ends: 7042 [2021-06-12 22:38:23,120 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 905.2ms TimeCoverageRelationStatistics Valid=303, Invalid=3119, Unknown=0, NotChecked=0, Total=3422 [2021-06-12 22:38:23,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7042 states. [2021-06-12 22:38:23,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7042 to 4300. [2021-06-12 22:38:23,177 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) [2021-06-12 22:38:23,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14528 transitions. [2021-06-12 22:38:23,183 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14528 transitions. Word has length 39 [2021-06-12 22:38:23,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:23,183 INFO L482 AbstractCegarLoop]: Abstraction has 4300 states and 14528 transitions. [2021-06-12 22:38:23,183 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) [2021-06-12 22:38:23,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14528 transitions. [2021-06-12 22:38:23,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:23,188 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:23,188 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:23,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-06-12 22:38:23,188 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:23,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:23,188 INFO L82 PathProgramCache]: Analyzing trace with hash 756352456, now seen corresponding path program 211 times [2021-06-12 22:38:23,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:23,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143307423] [2021-06-12 22:38:23,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:23,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:23,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143307423] [2021-06-12 22:38:23,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143307423] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:23,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:23,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-12 22:38:23,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906082126] [2021-06-12 22:38:23,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 22:38:23,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:23,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 22:38:23,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-12 22:38:23,334 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) [2021-06-12 22:38:24,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:24,133 INFO L93 Difference]: Finished difference Result 4629 states and 15530 transitions. [2021-06-12 22:38:24,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-12 22:38:24,133 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 [2021-06-12 22:38:24,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:24,140 INFO L225 Difference]: With dead ends: 4629 [2021-06-12 22:38:24,140 INFO L226 Difference]: Without dead ends: 4553 [2021-06-12 22:38:24,140 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 497.3ms TimeCoverageRelationStatistics Valid=162, Invalid=1398, Unknown=0, NotChecked=0, Total=1560 [2021-06-12 22:38:24,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2021-06-12 22:38:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 4332. [2021-06-12 22:38:24,187 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) [2021-06-12 22:38:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 14616 transitions. [2021-06-12 22:38:24,218 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 14616 transitions. Word has length 39 [2021-06-12 22:38:24,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:24,218 INFO L482 AbstractCegarLoop]: Abstraction has 4332 states and 14616 transitions. [2021-06-12 22:38:24,218 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) [2021-06-12 22:38:24,218 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 14616 transitions. [2021-06-12 22:38:24,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:24,223 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:24,223 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:24,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-06-12 22:38:24,223 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:24,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:24,223 INFO L82 PathProgramCache]: Analyzing trace with hash -261701156, now seen corresponding path program 212 times [2021-06-12 22:38:24,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:24,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974713573] [2021-06-12 22:38:24,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:24,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:24,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:24,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974713573] [2021-06-12 22:38:24,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974713573] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:24,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:24,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:24,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838274220] [2021-06-12 22:38:24,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:24,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:24,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:24,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:24,393 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) [2021-06-12 22:38:25,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:25,280 INFO L93 Difference]: Finished difference Result 4611 states and 15476 transitions. [2021-06-12 22:38:25,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-12 22:38:25,280 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 [2021-06-12 22:38:25,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:25,288 INFO L225 Difference]: With dead ends: 4611 [2021-06-12 22:38:25,288 INFO L226 Difference]: Without dead ends: 4545 [2021-06-12 22:38:25,288 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 572.1ms TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2021-06-12 22:38:25,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2021-06-12 22:38:25,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 4324. [2021-06-12 22:38:25,335 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) [2021-06-12 22:38:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 14592 transitions. [2021-06-12 22:38:25,341 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 14592 transitions. Word has length 39 [2021-06-12 22:38:25,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:25,341 INFO L482 AbstractCegarLoop]: Abstraction has 4324 states and 14592 transitions. [2021-06-12 22:38:25,342 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) [2021-06-12 22:38:25,342 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 14592 transitions. [2021-06-12 22:38:25,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:25,346 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:25,346 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:25,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-06-12 22:38:25,346 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:25,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:25,346 INFO L82 PathProgramCache]: Analyzing trace with hash -543966810, now seen corresponding path program 213 times [2021-06-12 22:38:25,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:25,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178379377] [2021-06-12 22:38:25,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:25,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:25,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:25,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178379377] [2021-06-12 22:38:25,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178379377] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:25,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:25,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:25,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129570977] [2021-06-12 22:38:25,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:25,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:25,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:25,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:25,502 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) [2021-06-12 22:38:26,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:26,392 INFO L93 Difference]: Finished difference Result 4632 states and 15529 transitions. [2021-06-12 22:38:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-12 22:38:26,392 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 [2021-06-12 22:38:26,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:26,399 INFO L225 Difference]: With dead ends: 4632 [2021-06-12 22:38:26,399 INFO L226 Difference]: Without dead ends: 4470 [2021-06-12 22:38:26,400 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 566.5ms TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2021-06-12 22:38:26,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2021-06-12 22:38:26,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 4256. [2021-06-12 22:38:26,449 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) [2021-06-12 22:38:26,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 14396 transitions. [2021-06-12 22:38:26,456 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 14396 transitions. Word has length 39 [2021-06-12 22:38:26,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:26,456 INFO L482 AbstractCegarLoop]: Abstraction has 4256 states and 14396 transitions. [2021-06-12 22:38:26,456 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) [2021-06-12 22:38:26,456 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 14396 transitions. [2021-06-12 22:38:26,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:26,461 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:26,461 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:26,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-06-12 22:38:26,461 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:26,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:26,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1808234730, now seen corresponding path program 214 times [2021-06-12 22:38:26,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:26,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609265942] [2021-06-12 22:38:26,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:26,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:26,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:26,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609265942] [2021-06-12 22:38:26,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609265942] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:26,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:26,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:26,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443972896] [2021-06-12 22:38:26,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:26,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:26,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:26,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:26,622 INFO L87 Difference]: Start difference. First operand 4256 states and 14396 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) [2021-06-12 22:38:28,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:28,176 INFO L93 Difference]: Finished difference Result 5381 states and 18242 transitions. [2021-06-12 22:38:28,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-12 22:38:28,177 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 [2021-06-12 22:38:28,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:28,185 INFO L225 Difference]: With dead ends: 5381 [2021-06-12 22:38:28,185 INFO L226 Difference]: Without dead ends: 5314 [2021-06-12 22:38:28,186 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 999.7ms TimeCoverageRelationStatistics Valid=340, Invalid=3200, Unknown=0, NotChecked=0, Total=3540 [2021-06-12 22:38:28,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5314 states. [2021-06-12 22:38:28,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5314 to 4394. [2021-06-12 22:38:28,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4394 states, 4393 states have (on average 3.3808331436376053) internal successors, (14852), 4393 states have internal predecessors, (14852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:28,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4394 states to 4394 states and 14852 transitions. [2021-06-12 22:38:28,250 INFO L78 Accepts]: Start accepts. Automaton has 4394 states and 14852 transitions. Word has length 39 [2021-06-12 22:38:28,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:28,250 INFO L482 AbstractCegarLoop]: Abstraction has 4394 states and 14852 transitions. [2021-06-12 22:38:28,251 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) [2021-06-12 22:38:28,251 INFO L276 IsEmpty]: Start isEmpty. Operand 4394 states and 14852 transitions. [2021-06-12 22:38:28,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:28,256 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:28,256 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:28,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-06-12 22:38:28,256 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:28,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:28,256 INFO L82 PathProgramCache]: Analyzing trace with hash -74179352, now seen corresponding path program 215 times [2021-06-12 22:38:28,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:28,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618556539] [2021-06-12 22:38:28,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:28,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:28,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618556539] [2021-06-12 22:38:28,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618556539] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:28,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:28,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:28,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931336391] [2021-06-12 22:38:28,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:28,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:28,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:28,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:28,421 INFO L87 Difference]: Start difference. First operand 4394 states and 14852 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) [2021-06-12 22:38:30,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:30,507 INFO L93 Difference]: Finished difference Result 5477 states and 18503 transitions. [2021-06-12 22:38:30,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-12 22:38:30,508 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 [2021-06-12 22:38:30,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:30,516 INFO L225 Difference]: With dead ends: 5477 [2021-06-12 22:38:30,516 INFO L226 Difference]: Without dead ends: 5434 [2021-06-12 22:38:30,517 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1586 ImplicationChecksByTransitivity, 1407.1ms TimeCoverageRelationStatistics Valid=476, Invalid=4926, Unknown=0, NotChecked=0, Total=5402 [2021-06-12 22:38:30,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5434 states. [2021-06-12 22:38:30,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5434 to 4400. [2021-06-12 22:38:30,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4400 states, 4399 states have (on average 3.3791770857012957) internal successors, (14865), 4399 states have internal predecessors, (14865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:30,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 14865 transitions. [2021-06-12 22:38:30,591 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 14865 transitions. Word has length 39 [2021-06-12 22:38:30,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:30,591 INFO L482 AbstractCegarLoop]: Abstraction has 4400 states and 14865 transitions. [2021-06-12 22:38:30,591 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) [2021-06-12 22:38:30,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 14865 transitions. [2021-06-12 22:38:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:30,595 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:30,596 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:30,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-06-12 22:38:30,596 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:30,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:30,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1854777654, now seen corresponding path program 216 times [2021-06-12 22:38:30,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:30,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522191341] [2021-06-12 22:38:30,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:30,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:30,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522191341] [2021-06-12 22:38:30,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522191341] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:30,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:30,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:30,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963397997] [2021-06-12 22:38:30,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:30,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:30,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:30,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:30,763 INFO L87 Difference]: Start difference. First operand 4400 states and 14865 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) [2021-06-12 22:38:32,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:32,791 INFO L93 Difference]: Finished difference Result 5408 states and 18323 transitions. [2021-06-12 22:38:32,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-12 22:38:32,792 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 [2021-06-12 22:38:32,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:32,799 INFO L225 Difference]: With dead ends: 5408 [2021-06-12 22:38:32,799 INFO L226 Difference]: Without dead ends: 5344 [2021-06-12 22:38:32,800 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 1370.7ms TimeCoverageRelationStatistics Valid=469, Invalid=4787, Unknown=0, NotChecked=0, Total=5256 [2021-06-12 22:38:32,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2021-06-12 22:38:32,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 4382. [2021-06-12 22:38:32,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 3.381419767176444) internal successors, (14814), 4381 states have internal predecessors, (14814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 14814 transitions. [2021-06-12 22:38:32,858 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 14814 transitions. Word has length 39 [2021-06-12 22:38:32,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:32,858 INFO L482 AbstractCegarLoop]: Abstraction has 4382 states and 14814 transitions. [2021-06-12 22:38:32,858 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) [2021-06-12 22:38:32,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 14814 transitions. [2021-06-12 22:38:32,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:32,862 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:32,862 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:32,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-06-12 22:38:32,862 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:32,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:32,863 INFO L82 PathProgramCache]: Analyzing trace with hash 2031374026, now seen corresponding path program 217 times [2021-06-12 22:38:32,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:32,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153250912] [2021-06-12 22:38:32,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:33,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:33,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:33,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153250912] [2021-06-12 22:38:33,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153250912] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:33,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:33,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:38:33,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400497785] [2021-06-12 22:38:33,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:38:33,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:33,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:38:33,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:38:33,019 INFO L87 Difference]: Start difference. First operand 4382 states and 14814 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) [2021-06-12 22:38:34,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:34,963 INFO L93 Difference]: Finished difference Result 5411 states and 18300 transitions. [2021-06-12 22:38:34,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-12 22:38:34,963 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 [2021-06-12 22:38:34,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:34,971 INFO L225 Difference]: With dead ends: 5411 [2021-06-12 22:38:34,971 INFO L226 Difference]: Without dead ends: 5281 [2021-06-12 22:38:34,972 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 1254.8ms TimeCoverageRelationStatistics Valid=402, Invalid=4154, Unknown=0, NotChecked=0, Total=4556 [2021-06-12 22:38:34,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2021-06-12 22:38:35,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 4358. [2021-06-12 22:38:35,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4358 states, 4357 states have (on average 3.3835207711728255) internal successors, (14742), 4357 states have internal predecessors, (14742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4358 states to 4358 states and 14742 transitions. [2021-06-12 22:38:35,035 INFO L78 Accepts]: Start accepts. Automaton has 4358 states and 14742 transitions. Word has length 39 [2021-06-12 22:38:35,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:35,035 INFO L482 AbstractCegarLoop]: Abstraction has 4358 states and 14742 transitions. [2021-06-12 22:38:35,035 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) [2021-06-12 22:38:35,035 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 14742 transitions. [2021-06-12 22:38:35,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:35,039 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:35,039 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:35,039 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-06-12 22:38:35,039 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:35,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:35,040 INFO L82 PathProgramCache]: Analyzing trace with hash -262843306, now seen corresponding path program 218 times [2021-06-12 22:38:35,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:35,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134523576] [2021-06-12 22:38:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:35,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:35,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134523576] [2021-06-12 22:38:35,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134523576] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:35,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:35,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:38:35,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930977852] [2021-06-12 22:38:35,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:38:35,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:35,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:38:35,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:38:35,207 INFO L87 Difference]: Start difference. First operand 4358 states and 14742 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:37,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:37,046 INFO L93 Difference]: Finished difference Result 5465 states and 18464 transitions. [2021-06-12 22:38:37,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-12 22:38:37,046 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 [2021-06-12 22:38:37,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:37,054 INFO L225 Difference]: With dead ends: 5465 [2021-06-12 22:38:37,054 INFO L226 Difference]: Without dead ends: 5398 [2021-06-12 22:38:37,054 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 1217.0ms TimeCoverageRelationStatistics Valid=427, Invalid=4265, Unknown=0, NotChecked=0, Total=4692 [2021-06-12 22:38:37,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5398 states. [2021-06-12 22:38:37,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5398 to 4392. [2021-06-12 22:38:37,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4391 states have (on average 3.3823730357549535) internal successors, (14852), 4391 states have internal predecessors, (14852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 14852 transitions. [2021-06-12 22:38:37,114 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 14852 transitions. Word has length 39 [2021-06-12 22:38:37,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:37,114 INFO L482 AbstractCegarLoop]: Abstraction has 4392 states and 14852 transitions. [2021-06-12 22:38:37,115 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:37,115 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 14852 transitions. [2021-06-12 22:38:37,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:37,120 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:37,120 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:37,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-06-12 22:38:37,120 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:37,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:37,120 INFO L82 PathProgramCache]: Analyzing trace with hash -2145257388, now seen corresponding path program 219 times [2021-06-12 22:38:37,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:37,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783677512] [2021-06-12 22:38:37,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:37,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:37,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:37,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783677512] [2021-06-12 22:38:37,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783677512] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:37,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:37,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:38:37,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653391492] [2021-06-12 22:38:37,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:38:37,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:37,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:38:37,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:38:37,293 INFO L87 Difference]: Start difference. First operand 4392 states and 14852 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:39,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:39,663 INFO L93 Difference]: Finished difference Result 5594 states and 18791 transitions. [2021-06-12 22:38:39,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-06-12 22:38:39,663 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:38:39,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:39,672 INFO L225 Difference]: With dead ends: 5594 [2021-06-12 22:38:39,672 INFO L226 Difference]: Without dead ends: 5551 [2021-06-12 22:38:39,672 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2061 ImplicationChecksByTransitivity, 1649.6ms TimeCoverageRelationStatistics Valid=570, Invalid=6236, Unknown=0, NotChecked=0, Total=6806 [2021-06-12 22:38:39,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5551 states. [2021-06-12 22:38:39,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5551 to 4398. [2021-06-12 22:38:39,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4398 states, 4397 states have (on average 3.380714123265863) internal successors, (14865), 4397 states have internal predecessors, (14865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:39,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4398 states to 4398 states and 14865 transitions. [2021-06-12 22:38:39,737 INFO L78 Accepts]: Start accepts. Automaton has 4398 states and 14865 transitions. Word has length 39 [2021-06-12 22:38:39,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:39,737 INFO L482 AbstractCegarLoop]: Abstraction has 4398 states and 14865 transitions. [2021-06-12 22:38:39,738 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:39,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4398 states and 14865 transitions. [2021-06-12 22:38:39,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:39,742 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:39,742 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:39,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-06-12 22:38:39,742 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:39,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:39,743 INFO L82 PathProgramCache]: Analyzing trace with hash 369111606, now seen corresponding path program 220 times [2021-06-12 22:38:39,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:39,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858161555] [2021-06-12 22:38:39,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:39,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:39,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:39,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858161555] [2021-06-12 22:38:39,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858161555] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:39,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:39,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:38:39,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758017103] [2021-06-12 22:38:39,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:38:39,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:39,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:38:39,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:38:39,927 INFO L87 Difference]: Start difference. First operand 4398 states and 14865 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:42,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:42,223 INFO L93 Difference]: Finished difference Result 5525 states and 18611 transitions. [2021-06-12 22:38:42,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-12 22:38:42,224 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:38:42,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:42,232 INFO L225 Difference]: With dead ends: 5525 [2021-06-12 22:38:42,232 INFO L226 Difference]: Without dead ends: 5461 [2021-06-12 22:38:42,232 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1872 ImplicationChecksByTransitivity, 1603.6ms TimeCoverageRelationStatistics Valid=544, Invalid=5776, Unknown=0, NotChecked=0, Total=6320 [2021-06-12 22:38:42,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5461 states. [2021-06-12 22:38:42,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5461 to 4376. [2021-06-12 22:38:42,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 3.3856) internal successors, (14812), 4375 states have internal predecessors, (14812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 14812 transitions. [2021-06-12 22:38:42,292 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 14812 transitions. Word has length 39 [2021-06-12 22:38:42,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:42,292 INFO L482 AbstractCegarLoop]: Abstraction has 4376 states and 14812 transitions. [2021-06-12 22:38:42,292 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) [2021-06-12 22:38:42,292 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 14812 transitions. [2021-06-12 22:38:42,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:42,297 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:42,297 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:42,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-06-12 22:38:42,297 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:42,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:42,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1931571784, now seen corresponding path program 221 times [2021-06-12 22:38:42,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:42,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180778324] [2021-06-12 22:38:42,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:42,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:42,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:42,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180778324] [2021-06-12 22:38:42,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180778324] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:42,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:42,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:38:42,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20710671] [2021-06-12 22:38:42,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:38:42,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:42,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:38:42,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:38:42,475 INFO L87 Difference]: Start difference. First operand 4376 states and 14812 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:43,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:43,982 INFO L93 Difference]: Finished difference Result 5361 states and 18138 transitions. [2021-06-12 22:38:43,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-12 22:38:43,982 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 [2021-06-12 22:38:43,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:43,990 INFO L225 Difference]: With dead ends: 5361 [2021-06-12 22:38:43,990 INFO L226 Difference]: Without dead ends: 5294 [2021-06-12 22:38:43,990 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 981.0ms TimeCoverageRelationStatistics Valid=346, Invalid=3314, Unknown=0, NotChecked=0, Total=3660 [2021-06-12 22:38:44,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5294 states. [2021-06-12 22:38:44,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5294 to 4388. [2021-06-12 22:38:44,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 4387 states have (on average 3.3822657852746754) internal successors, (14838), 4387 states have internal predecessors, (14838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:44,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 14838 transitions. [2021-06-12 22:38:44,049 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 14838 transitions. Word has length 39 [2021-06-12 22:38:44,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:44,049 INFO L482 AbstractCegarLoop]: Abstraction has 4388 states and 14838 transitions. [2021-06-12 22:38:44,049 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) [2021-06-12 22:38:44,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 14838 transitions. [2021-06-12 22:38:44,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:44,053 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:44,053 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:44,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-06-12 22:38:44,054 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:44,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:44,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1759428566, now seen corresponding path program 222 times [2021-06-12 22:38:44,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:44,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788337805] [2021-06-12 22:38:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:44,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:44,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788337805] [2021-06-12 22:38:44,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788337805] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:44,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:44,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:38:44,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430501206] [2021-06-12 22:38:44,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:38:44,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:44,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:38:44,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:38:44,224 INFO L87 Difference]: Start difference. First operand 4388 states and 14838 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:45,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:45,721 INFO L93 Difference]: Finished difference Result 5370 states and 18122 transitions. [2021-06-12 22:38:45,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-12 22:38:45,721 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:38:45,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:45,729 INFO L225 Difference]: With dead ends: 5370 [2021-06-12 22:38:45,729 INFO L226 Difference]: Without dead ends: 5307 [2021-06-12 22:38:45,730 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 999.7ms TimeCoverageRelationStatistics Valid=352, Invalid=3430, Unknown=0, NotChecked=0, Total=3782 [2021-06-12 22:38:45,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5307 states. [2021-06-12 22:38:45,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5307 to 4380. [2021-06-12 22:38:45,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4380 states, 4379 states have (on average 3.3838775976250286) internal successors, (14818), 4379 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) [2021-06-12 22:38:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 14818 transitions. [2021-06-12 22:38:45,794 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 14818 transitions. Word has length 39 [2021-06-12 22:38:45,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:45,794 INFO L482 AbstractCegarLoop]: Abstraction has 4380 states and 14818 transitions. [2021-06-12 22:38:45,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:45,794 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 14818 transitions. [2021-06-12 22:38:45,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:45,798 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:45,799 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:45,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-06-12 22:38:45,799 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:45,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:45,799 INFO L82 PathProgramCache]: Analyzing trace with hash 723272566, now seen corresponding path program 223 times [2021-06-12 22:38:45,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:45,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919190381] [2021-06-12 22:38:45,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:45,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:45,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:45,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919190381] [2021-06-12 22:38:45,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919190381] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:45,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:45,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:38:45,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803525841] [2021-06-12 22:38:45,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:38:45,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:45,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:38:45,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:38:45,970 INFO L87 Difference]: Start difference. First operand 4380 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) [2021-06-12 22:38:48,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:48,063 INFO L93 Difference]: Finished difference Result 5537 states and 18547 transitions. [2021-06-12 22:38:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-12 22:38:48,063 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 [2021-06-12 22:38:48,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:48,072 INFO L225 Difference]: With dead ends: 5537 [2021-06-12 22:38:48,072 INFO L226 Difference]: Without dead ends: 5494 [2021-06-12 22:38:48,072 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 1472.9ms TimeCoverageRelationStatistics Valid=519, Invalid=5333, Unknown=0, NotChecked=0, Total=5852 [2021-06-12 22:38:48,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5494 states. [2021-06-12 22:38:48,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5494 to 4388. [2021-06-12 22:38:48,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 4387 states have (on average 3.3822657852746754) internal successors, (14838), 4387 states have internal predecessors, (14838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 14838 transitions. [2021-06-12 22:38:48,133 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 14838 transitions. Word has length 39 [2021-06-12 22:38:48,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:48,133 INFO L482 AbstractCegarLoop]: Abstraction has 4388 states and 14838 transitions. [2021-06-12 22:38:48,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:48,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 14838 transitions. [2021-06-12 22:38:48,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:48,137 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:48,137 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:48,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-06-12 22:38:48,137 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:48,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:48,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1057325736, now seen corresponding path program 224 times [2021-06-12 22:38:48,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:48,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751803702] [2021-06-12 22:38:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:48,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:48,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751803702] [2021-06-12 22:38:48,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751803702] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:48,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:48,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:38:48,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439822218] [2021-06-12 22:38:48,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:38:48,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:48,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:38:48,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:38:48,333 INFO L87 Difference]: Start difference. First operand 4388 states and 14838 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:50,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:50,403 INFO L93 Difference]: Finished difference Result 5525 states and 18509 transitions. [2021-06-12 22:38:50,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-12 22:38:50,404 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:38:50,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:50,412 INFO L225 Difference]: With dead ends: 5525 [2021-06-12 22:38:50,412 INFO L226 Difference]: Without dead ends: 5473 [2021-06-12 22:38:50,412 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1636 ImplicationChecksByTransitivity, 1470.0ms TimeCoverageRelationStatistics Valid=511, Invalid=5189, Unknown=0, NotChecked=0, Total=5700 [2021-06-12 22:38:50,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5473 states. [2021-06-12 22:38:50,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5473 to 4380. [2021-06-12 22:38:50,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4380 states, 4379 states have (on average 3.3838775976250286) internal successors, (14818), 4379 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) [2021-06-12 22:38:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 14818 transitions. [2021-06-12 22:38:50,472 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 14818 transitions. Word has length 39 [2021-06-12 22:38:50,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:50,472 INFO L482 AbstractCegarLoop]: Abstraction has 4380 states and 14818 transitions. [2021-06-12 22:38:50,472 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:50,473 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 14818 transitions. [2021-06-12 22:38:50,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:50,477 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:50,477 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:50,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-06-12 22:38:50,477 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:50,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:50,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1641756136, now seen corresponding path program 225 times [2021-06-12 22:38:50,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:50,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242540530] [2021-06-12 22:38:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:50,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:50,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:50,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242540530] [2021-06-12 22:38:50,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242540530] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:50,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:50,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:38:50,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004529918] [2021-06-12 22:38:50,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:38:50,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:50,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:38:50,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:38:50,652 INFO L87 Difference]: Start difference. First operand 4380 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) [2021-06-12 22:38:52,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:52,323 INFO L93 Difference]: Finished difference Result 5508 states and 18427 transitions. [2021-06-12 22:38:52,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-12 22:38:52,323 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:38:52,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:52,331 INFO L225 Difference]: With dead ends: 5508 [2021-06-12 22:38:52,331 INFO L226 Difference]: Without dead ends: 5453 [2021-06-12 22:38:52,332 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1136 ImplicationChecksByTransitivity, 1119.3ms TimeCoverageRelationStatistics Valid=396, Invalid=3894, Unknown=0, NotChecked=0, Total=4290 [2021-06-12 22:38:52,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5453 states. [2021-06-12 22:38:52,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5453 to 4382. [2021-06-12 22:38:52,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 3.3830175758959142) internal successors, (14821), 4381 states have internal predecessors, (14821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:52,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 14821 transitions. [2021-06-12 22:38:52,391 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 14821 transitions. Word has length 39 [2021-06-12 22:38:52,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:52,391 INFO L482 AbstractCegarLoop]: Abstraction has 4382 states and 14821 transitions. [2021-06-12 22:38:52,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:52,391 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 14821 transitions. [2021-06-12 22:38:52,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:52,396 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:52,396 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:52,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-06-12 22:38:52,396 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:52,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:52,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1480558938, now seen corresponding path program 226 times [2021-06-12 22:38:52,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:52,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577733777] [2021-06-12 22:38:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:52,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:52,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577733777] [2021-06-12 22:38:52,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577733777] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:52,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:52,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:38:52,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972212763] [2021-06-12 22:38:52,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:38:52,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:52,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:38:52,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:38:52,575 INFO L87 Difference]: Start difference. First operand 4382 states and 14821 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:54,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:54,140 INFO L93 Difference]: Finished difference Result 5421 states and 18236 transitions. [2021-06-12 22:38:54,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-12 22:38:54,141 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:38:54,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:54,148 INFO L225 Difference]: With dead ends: 5421 [2021-06-12 22:38:54,149 INFO L226 Difference]: Without dead ends: 5357 [2021-06-12 22:38:54,149 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 1048.3ms TimeCoverageRelationStatistics Valid=379, Invalid=3653, Unknown=0, NotChecked=0, Total=4032 [2021-06-12 22:38:54,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5357 states. [2021-06-12 22:38:54,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5357 to 4376. [2021-06-12 22:38:54,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 3.3846857142857143) internal successors, (14808), 4375 states have internal predecessors, (14808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:54,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 14808 transitions. [2021-06-12 22:38:54,208 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 14808 transitions. Word has length 39 [2021-06-12 22:38:54,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:54,208 INFO L482 AbstractCegarLoop]: Abstraction has 4376 states and 14808 transitions. [2021-06-12 22:38:54,208 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 14808 transitions. [2021-06-12 22:38:54,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:54,212 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:54,212 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:54,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-06-12 22:38:54,212 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:54,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:54,213 INFO L82 PathProgramCache]: Analyzing trace with hash 761489384, now seen corresponding path program 227 times [2021-06-12 22:38:54,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:54,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116591987] [2021-06-12 22:38:54,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:54,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:54,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116591987] [2021-06-12 22:38:54,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116591987] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:54,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:54,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:38:54,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692031508] [2021-06-12 22:38:54,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:38:54,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:54,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:38:54,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:38:54,384 INFO L87 Difference]: Start difference. First operand 4376 states and 14808 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:56,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:56,618 INFO L93 Difference]: Finished difference Result 5610 states and 18811 transitions. [2021-06-12 22:38:56,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-12 22:38:56,618 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:38:56,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:56,626 INFO L225 Difference]: With dead ends: 5610 [2021-06-12 22:38:56,626 INFO L226 Difference]: Without dead ends: 5473 [2021-06-12 22:38:56,627 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 1460.4ms TimeCoverageRelationStatistics Valid=466, Invalid=5234, Unknown=0, NotChecked=0, Total=5700 [2021-06-12 22:38:56,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5473 states. [2021-06-12 22:38:56,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5473 to 4384. [2021-06-12 22:38:56,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 4383 states have (on average 3.3858088067533654) internal successors, (14840), 4383 states have internal predecessors, (14840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 14840 transitions. [2021-06-12 22:38:56,686 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 14840 transitions. Word has length 39 [2021-06-12 22:38:56,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:56,686 INFO L482 AbstractCegarLoop]: Abstraction has 4384 states and 14840 transitions. [2021-06-12 22:38:56,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 14840 transitions. [2021-06-12 22:38:56,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:56,691 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:56,691 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:56,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-06-12 22:38:56,692 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:56,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:56,692 INFO L82 PathProgramCache]: Analyzing trace with hash -733401516, now seen corresponding path program 228 times [2021-06-12 22:38:56,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:56,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061869005] [2021-06-12 22:38:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:56,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:56,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:56,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061869005] [2021-06-12 22:38:56,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061869005] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:56,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:56,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:38:56,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127119469] [2021-06-12 22:38:56,869 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:38:56,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:56,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:38:56,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:38:56,869 INFO L87 Difference]: Start difference. First operand 4384 states and 14840 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:58,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:38:58,892 INFO L93 Difference]: Finished difference Result 5569 states and 18627 transitions. [2021-06-12 22:38:58,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-12 22:38:58,893 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:38:58,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:38:58,901 INFO L225 Difference]: With dead ends: 5569 [2021-06-12 22:38:58,902 INFO L226 Difference]: Without dead ends: 5505 [2021-06-12 22:38:58,902 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1581 ImplicationChecksByTransitivity, 1401.5ms TimeCoverageRelationStatistics Valid=485, Invalid=5065, Unknown=0, NotChecked=0, Total=5550 [2021-06-12 22:38:58,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5505 states. [2021-06-12 22:38:58,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5505 to 4388. [2021-06-12 22:38:58,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 4387 states have (on average 3.3850011397310236) internal successors, (14850), 4387 states have internal predecessors, (14850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:58,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 14850 transitions. [2021-06-12 22:38:58,966 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 14850 transitions. Word has length 39 [2021-06-12 22:38:58,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:38:58,966 INFO L482 AbstractCegarLoop]: Abstraction has 4388 states and 14850 transitions. [2021-06-12 22:38:58,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:38:58,966 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 14850 transitions. [2021-06-12 22:38:58,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:38:58,970 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:38:58,970 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:38:58,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-06-12 22:38:58,971 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:38:58,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:38:58,971 INFO L82 PathProgramCache]: Analyzing trace with hash 185082054, now seen corresponding path program 229 times [2021-06-12 22:38:58,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:38:58,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430841945] [2021-06-12 22:38:58,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:38:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:38:59,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:38:59,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:38:59,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430841945] [2021-06-12 22:38:59,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430841945] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:38:59,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:38:59,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:38:59,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420513558] [2021-06-12 22:38:59,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:38:59,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:38:59,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:38:59,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:38:59,145 INFO L87 Difference]: Start difference. First operand 4388 states and 14850 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:00,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:00,700 INFO L93 Difference]: Finished difference Result 5495 states and 18413 transitions. [2021-06-12 22:39:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-12 22:39:00,701 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:39:00,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:00,709 INFO L225 Difference]: With dead ends: 5495 [2021-06-12 22:39:00,709 INFO L226 Difference]: Without dead ends: 5440 [2021-06-12 22:39:00,710 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 1013.9ms TimeCoverageRelationStatistics Valid=351, Invalid=3555, Unknown=0, NotChecked=0, Total=3906 [2021-06-12 22:39:00,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5440 states. [2021-06-12 22:39:00,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5440 to 4390. [2021-06-12 22:39:00,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4390 states, 4389 states have (on average 3.384142173615858) internal successors, (14853), 4389 states have internal predecessors, (14853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 14853 transitions. [2021-06-12 22:39:00,771 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 14853 transitions. Word has length 39 [2021-06-12 22:39:00,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:00,771 INFO L482 AbstractCegarLoop]: Abstraction has 4390 states and 14853 transitions. [2021-06-12 22:39:00,771 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:00,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 14853 transitions. [2021-06-12 22:39:00,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:00,776 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:00,776 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:00,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-06-12 22:39:00,776 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:00,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:00,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1357734276, now seen corresponding path program 230 times [2021-06-12 22:39:00,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:00,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179164974] [2021-06-12 22:39:00,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:00,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:00,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:00,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179164974] [2021-06-12 22:39:00,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179164974] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:00,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:00,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:00,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260694710] [2021-06-12 22:39:00,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:00,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:00,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:00,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:00,953 INFO L87 Difference]: Start difference. First operand 4390 states and 14853 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:02,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:02,541 INFO L93 Difference]: Finished difference Result 5513 states and 18457 transitions. [2021-06-12 22:39:02,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-12 22:39:02,541 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:39:02,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:02,549 INFO L225 Difference]: With dead ends: 5513 [2021-06-12 22:39:02,549 INFO L226 Difference]: Without dead ends: 5453 [2021-06-12 22:39:02,550 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 1059.3ms TimeCoverageRelationStatistics Valid=362, Invalid=3670, Unknown=0, NotChecked=0, Total=4032 [2021-06-12 22:39:02,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5453 states. [2021-06-12 22:39:02,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5453 to 4388. [2021-06-12 22:39:02,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 4387 states have (on average 3.384545247321632) internal successors, (14848), 4387 states have internal predecessors, (14848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:02,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 14848 transitions. [2021-06-12 22:39:02,610 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 14848 transitions. Word has length 39 [2021-06-12 22:39:02,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:02,610 INFO L482 AbstractCegarLoop]: Abstraction has 4388 states and 14848 transitions. [2021-06-12 22:39:02,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:02,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 14848 transitions. [2021-06-12 22:39:02,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:02,615 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:02,615 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:02,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-06-12 22:39:02,616 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:02,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:02,616 INFO L82 PathProgramCache]: Analyzing trace with hash -721832266, now seen corresponding path program 231 times [2021-06-12 22:39:02,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:02,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381459527] [2021-06-12 22:39:02,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:02,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:02,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:02,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381459527] [2021-06-12 22:39:02,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381459527] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:02,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:02,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:39:02,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913771084] [2021-06-12 22:39:02,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:39:02,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:02,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:39:02,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:39:02,791 INFO L87 Difference]: Start difference. First operand 4388 states and 14848 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) [2021-06-12 22:39:04,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:04,180 INFO L93 Difference]: Finished difference Result 5370 states and 18139 transitions. [2021-06-12 22:39:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-12 22:39:04,181 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 [2021-06-12 22:39:04,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:04,188 INFO L225 Difference]: With dead ends: 5370 [2021-06-12 22:39:04,189 INFO L226 Difference]: Without dead ends: 5294 [2021-06-12 22:39:04,189 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 924.4ms TimeCoverageRelationStatistics Valid=312, Invalid=2994, Unknown=0, NotChecked=0, Total=3306 [2021-06-12 22:39:04,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5294 states. [2021-06-12 22:39:04,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5294 to 4396. [2021-06-12 22:39:04,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4396 states, 4395 states have (on average 3.3820250284414106) internal successors, (14864), 4395 states have internal predecessors, (14864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:04,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 14864 transitions. [2021-06-12 22:39:04,267 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 14864 transitions. Word has length 39 [2021-06-12 22:39:04,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:04,267 INFO L482 AbstractCegarLoop]: Abstraction has 4396 states and 14864 transitions. [2021-06-12 22:39:04,267 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) [2021-06-12 22:39:04,267 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 14864 transitions. [2021-06-12 22:39:04,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:04,271 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:04,271 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:04,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-06-12 22:39:04,271 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:04,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:04,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1739885878, now seen corresponding path program 232 times [2021-06-12 22:39:04,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:04,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681038750] [2021-06-12 22:39:04,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:04,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:04,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681038750] [2021-06-12 22:39:04,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681038750] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:04,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:04,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:04,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124963498] [2021-06-12 22:39:04,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:04,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:04,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:04,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:04,445 INFO L87 Difference]: Start difference. First operand 4396 states and 14864 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:05,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:05,925 INFO L93 Difference]: Finished difference Result 5400 states and 18190 transitions. [2021-06-12 22:39:05,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-12 22:39:05,926 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:39:05,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:05,933 INFO L225 Difference]: With dead ends: 5400 [2021-06-12 22:39:05,933 INFO L226 Difference]: Without dead ends: 5322 [2021-06-12 22:39:05,934 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 975.2ms TimeCoverageRelationStatistics Valid=328, Invalid=3332, Unknown=0, NotChecked=0, Total=3660 [2021-06-12 22:39:05,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5322 states. [2021-06-12 22:39:05,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5322 to 4376. [2021-06-12 22:39:05,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 3.3856) internal successors, (14812), 4375 states have internal predecessors, (14812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:05,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 14812 transitions. [2021-06-12 22:39:05,990 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 14812 transitions. Word has length 39 [2021-06-12 22:39:05,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:05,991 INFO L482 AbstractCegarLoop]: Abstraction has 4376 states and 14812 transitions. [2021-06-12 22:39:05,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:05,991 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 14812 transitions. [2021-06-12 22:39:05,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:05,995 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:05,995 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:05,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-06-12 22:39:05,995 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:05,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:05,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1690742988, now seen corresponding path program 233 times [2021-06-12 22:39:05,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:05,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504096475] [2021-06-12 22:39:05,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:06,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:06,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504096475] [2021-06-12 22:39:06,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504096475] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:06,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:06,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:39:06,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287468638] [2021-06-12 22:39:06,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:39:06,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:06,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:39:06,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:39:06,151 INFO L87 Difference]: Start difference. First operand 4376 states and 14812 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) [2021-06-12 22:39:07,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:07,733 INFO L93 Difference]: Finished difference Result 5319 states and 18031 transitions. [2021-06-12 22:39:07,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-12 22:39:07,734 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 [2021-06-12 22:39:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:07,741 INFO L225 Difference]: With dead ends: 5319 [2021-06-12 22:39:07,741 INFO L226 Difference]: Without dead ends: 5252 [2021-06-12 22:39:07,742 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 1003.9ms TimeCoverageRelationStatistics Valid=324, Invalid=3098, Unknown=0, NotChecked=0, Total=3422 [2021-06-12 22:39:07,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5252 states. [2021-06-12 22:39:07,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5252 to 4424. [2021-06-12 22:39:07,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4424 states, 4423 states have (on average 3.3818675107393172) internal successors, (14958), 4423 states have internal predecessors, (14958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:07,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 14958 transitions. [2021-06-12 22:39:07,797 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 14958 transitions. Word has length 39 [2021-06-12 22:39:07,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:07,797 INFO L482 AbstractCegarLoop]: Abstraction has 4424 states and 14958 transitions. [2021-06-12 22:39:07,797 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) [2021-06-12 22:39:07,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 14958 transitions. [2021-06-12 22:39:07,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:07,802 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:07,802 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:07,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-06-12 22:39:07,802 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:07,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:07,802 INFO L82 PathProgramCache]: Analyzing trace with hash -191671094, now seen corresponding path program 234 times [2021-06-12 22:39:07,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:07,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543573130] [2021-06-12 22:39:07,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:07,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:07,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:07,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543573130] [2021-06-12 22:39:07,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543573130] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:07,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:07,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:39:07,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999761572] [2021-06-12 22:39:07,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:39:07,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:07,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:39:07,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:39:07,968 INFO L87 Difference]: Start difference. First operand 4424 states and 14958 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) [2021-06-12 22:39:10,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:10,020 INFO L93 Difference]: Finished difference Result 5415 states and 18292 transitions. [2021-06-12 22:39:10,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-12 22:39:10,020 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 [2021-06-12 22:39:10,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:10,028 INFO L225 Difference]: With dead ends: 5415 [2021-06-12 22:39:10,028 INFO L226 Difference]: Without dead ends: 5372 [2021-06-12 22:39:10,028 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 1375.5ms TimeCoverageRelationStatistics Valid=459, Invalid=4797, Unknown=0, NotChecked=0, Total=5256 [2021-06-12 22:39:10,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2021-06-12 22:39:10,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 4430. [2021-06-12 22:39:10,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4430 states, 4429 states have (on average 3.38022126890946) internal successors, (14971), 4429 states have internal predecessors, (14971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:10,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4430 states to 4430 states and 14971 transitions. [2021-06-12 22:39:10,088 INFO L78 Accepts]: Start accepts. Automaton has 4430 states and 14971 transitions. Word has length 39 [2021-06-12 22:39:10,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:10,089 INFO L482 AbstractCegarLoop]: Abstraction has 4430 states and 14971 transitions. [2021-06-12 22:39:10,089 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) [2021-06-12 22:39:10,089 INFO L276 IsEmpty]: Start isEmpty. Operand 4430 states and 14971 transitions. [2021-06-12 22:39:10,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:10,093 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:10,093 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:10,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-06-12 22:39:10,093 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:10,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:10,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1972269396, now seen corresponding path program 235 times [2021-06-12 22:39:10,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:10,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575407563] [2021-06-12 22:39:10,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:10,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:10,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:10,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575407563] [2021-06-12 22:39:10,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575407563] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:10,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:10,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:39:10,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313282818] [2021-06-12 22:39:10,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:39:10,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:10,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:39:10,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:39:10,254 INFO L87 Difference]: Start difference. First operand 4430 states and 14971 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) [2021-06-12 22:39:12,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:12,328 INFO L93 Difference]: Finished difference Result 5346 states and 18112 transitions. [2021-06-12 22:39:12,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-12 22:39:12,328 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 [2021-06-12 22:39:12,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:12,364 INFO L225 Difference]: With dead ends: 5346 [2021-06-12 22:39:12,364 INFO L226 Difference]: Without dead ends: 5282 [2021-06-12 22:39:12,364 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 1403.9ms TimeCoverageRelationStatistics Valid=452, Invalid=4660, Unknown=0, NotChecked=0, Total=5112 [2021-06-12 22:39:12,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5282 states. [2021-06-12 22:39:12,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5282 to 4412. [2021-06-12 22:39:12,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4412 states, 4411 states have (on average 3.382452958512809) internal successors, (14920), 4411 states have internal predecessors, (14920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 14920 transitions. [2021-06-12 22:39:12,422 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 14920 transitions. Word has length 39 [2021-06-12 22:39:12,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:12,422 INFO L482 AbstractCegarLoop]: Abstraction has 4412 states and 14920 transitions. [2021-06-12 22:39:12,422 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) [2021-06-12 22:39:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 14920 transitions. [2021-06-12 22:39:12,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:12,428 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:12,428 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:12,428 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-06-12 22:39:12,428 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:12,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:12,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1913882284, now seen corresponding path program 236 times [2021-06-12 22:39:12,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:12,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002828023] [2021-06-12 22:39:12,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:12,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:12,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002828023] [2021-06-12 22:39:12,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002828023] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:12,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:12,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:39:12,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527247136] [2021-06-12 22:39:12,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:39:12,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:12,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:39:12,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:39:12,589 INFO L87 Difference]: Start difference. First operand 4412 states and 14920 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) [2021-06-12 22:39:14,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:14,544 INFO L93 Difference]: Finished difference Result 5367 states and 18159 transitions. [2021-06-12 22:39:14,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-12 22:39:14,544 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 [2021-06-12 22:39:14,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:14,552 INFO L225 Difference]: With dead ends: 5367 [2021-06-12 22:39:14,552 INFO L226 Difference]: Without dead ends: 5237 [2021-06-12 22:39:14,552 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 1238.5ms TimeCoverageRelationStatistics Valid=387, Invalid=4035, Unknown=0, NotChecked=0, Total=4422 [2021-06-12 22:39:14,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5237 states. [2021-06-12 22:39:14,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5237 to 4388. [2021-06-12 22:39:14,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 4387 states have (on average 3.3836334625028495) internal successors, (14844), 4387 states have internal predecessors, (14844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:14,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 14844 transitions. [2021-06-12 22:39:14,608 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 14844 transitions. Word has length 39 [2021-06-12 22:39:14,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:14,608 INFO L482 AbstractCegarLoop]: Abstraction has 4388 states and 14844 transitions. [2021-06-12 22:39:14,608 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) [2021-06-12 22:39:14,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 14844 transitions. [2021-06-12 22:39:14,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:14,613 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:14,613 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:14,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-06-12 22:39:14,613 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:14,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:14,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1415536106, now seen corresponding path program 237 times [2021-06-12 22:39:14,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:14,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571664582] [2021-06-12 22:39:14,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:14,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:14,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:14,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571664582] [2021-06-12 22:39:14,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571664582] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:14,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:14,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:14,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754587785] [2021-06-12 22:39:14,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:14,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:14,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:14,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:14,786 INFO L87 Difference]: Start difference. First operand 4388 states and 14844 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:16,523 INFO L93 Difference]: Finished difference Result 5412 states and 18282 transitions. [2021-06-12 22:39:16,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-12 22:39:16,523 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:39:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:16,531 INFO L225 Difference]: With dead ends: 5412 [2021-06-12 22:39:16,531 INFO L226 Difference]: Without dead ends: 5345 [2021-06-12 22:39:16,531 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 1109.1ms TimeCoverageRelationStatistics Valid=375, Invalid=3915, Unknown=0, NotChecked=0, Total=4290 [2021-06-12 22:39:16,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2021-06-12 22:39:16,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 4406. [2021-06-12 22:39:16,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 4405 states have (on average 3.380703745743473) internal successors, (14892), 4405 states have internal predecessors, (14892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:16,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 14892 transitions. [2021-06-12 22:39:16,593 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 14892 transitions. Word has length 39 [2021-06-12 22:39:16,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:16,593 INFO L482 AbstractCegarLoop]: Abstraction has 4406 states and 14892 transitions. [2021-06-12 22:39:16,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:16,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 14892 transitions. [2021-06-12 22:39:16,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:16,598 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:16,598 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:16,598 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-06-12 22:39:16,598 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:16,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:16,598 INFO L82 PathProgramCache]: Analyzing trace with hash -466877976, now seen corresponding path program 238 times [2021-06-12 22:39:16,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:16,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460690618] [2021-06-12 22:39:16,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:16,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:16,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460690618] [2021-06-12 22:39:16,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460690618] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:16,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:16,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:16,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127895834] [2021-06-12 22:39:16,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:16,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:16,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:16,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:16,776 INFO L87 Difference]: Start difference. First operand 4406 states and 14892 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:19,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:19,096 INFO L93 Difference]: Finished difference Result 5541 states and 18609 transitions. [2021-06-12 22:39:19,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-12 22:39:19,097 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:39:19,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:19,105 INFO L225 Difference]: With dead ends: 5541 [2021-06-12 22:39:19,105 INFO L226 Difference]: Without dead ends: 5498 [2021-06-12 22:39:19,105 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1874 ImplicationChecksByTransitivity, 1572.7ms TimeCoverageRelationStatistics Valid=517, Invalid=5803, Unknown=0, NotChecked=0, Total=6320 [2021-06-12 22:39:19,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5498 states. [2021-06-12 22:39:19,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5498 to 4412. [2021-06-12 22:39:19,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4412 states, 4411 states have (on average 3.3790523690773067) internal successors, (14905), 4411 states have internal predecessors, (14905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:19,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 14905 transitions. [2021-06-12 22:39:19,164 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 14905 transitions. Word has length 39 [2021-06-12 22:39:19,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:19,164 INFO L482 AbstractCegarLoop]: Abstraction has 4412 states and 14905 transitions. [2021-06-12 22:39:19,164 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) [2021-06-12 22:39:19,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 14905 transitions. [2021-06-12 22:39:19,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:19,169 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:19,169 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:19,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-06-12 22:39:19,169 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:19,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:19,169 INFO L82 PathProgramCache]: Analyzing trace with hash 2047491018, now seen corresponding path program 239 times [2021-06-12 22:39:19,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:19,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313046416] [2021-06-12 22:39:19,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:19,343 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:19,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313046416] [2021-06-12 22:39:19,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313046416] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:19,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:19,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:19,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073123900] [2021-06-12 22:39:19,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:19,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:19,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:19,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:19,344 INFO L87 Difference]: Start difference. First operand 4412 states and 14905 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:21,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:21,570 INFO L93 Difference]: Finished difference Result 5472 states and 18429 transitions. [2021-06-12 22:39:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-12 22:39:21,570 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:39:21,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:21,578 INFO L225 Difference]: With dead ends: 5472 [2021-06-12 22:39:21,578 INFO L226 Difference]: Without dead ends: 5408 [2021-06-12 22:39:21,579 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 1505.8ms TimeCoverageRelationStatistics Valid=491, Invalid=5361, Unknown=0, NotChecked=0, Total=5852 [2021-06-12 22:39:21,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5408 states. [2021-06-12 22:39:21,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5408 to 4394. [2021-06-12 22:39:21,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4394 states, 4393 states have (on average 3.3826542226269063) internal successors, (14860), 4393 states have internal predecessors, (14860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:21,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4394 states to 4394 states and 14860 transitions. [2021-06-12 22:39:21,641 INFO L78 Accepts]: Start accepts. Automaton has 4394 states and 14860 transitions. Word has length 39 [2021-06-12 22:39:21,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:21,641 INFO L482 AbstractCegarLoop]: Abstraction has 4394 states and 14860 transitions. [2021-06-12 22:39:21,641 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) [2021-06-12 22:39:21,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4394 states and 14860 transitions. [2021-06-12 22:39:21,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:21,646 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:21,647 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:21,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-06-12 22:39:21,647 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:21,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:21,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1424405900, now seen corresponding path program 240 times [2021-06-12 22:39:21,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:21,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142010740] [2021-06-12 22:39:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:21,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:21,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:21,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142010740] [2021-06-12 22:39:21,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142010740] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:21,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:21,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:21,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48950468] [2021-06-12 22:39:21,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:21,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:21,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:21,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:21,842 INFO L87 Difference]: Start difference. First operand 4394 states and 14860 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:23,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:23,326 INFO L93 Difference]: Finished difference Result 5314 states and 17970 transitions. [2021-06-12 22:39:23,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-12 22:39:23,326 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 [2021-06-12 22:39:23,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:23,334 INFO L225 Difference]: With dead ends: 5314 [2021-06-12 22:39:23,334 INFO L226 Difference]: Without dead ends: 5247 [2021-06-12 22:39:23,335 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 944.4ms TimeCoverageRelationStatistics Valid=296, Invalid=3010, Unknown=0, NotChecked=0, Total=3306 [2021-06-12 22:39:23,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5247 states. [2021-06-12 22:39:23,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5247 to 4412. [2021-06-12 22:39:23,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4412 states, 4411 states have (on average 3.378372251190206) internal successors, (14902), 4411 states have internal predecessors, (14902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:23,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 14902 transitions. [2021-06-12 22:39:23,394 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 14902 transitions. Word has length 39 [2021-06-12 22:39:23,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:23,394 INFO L482 AbstractCegarLoop]: Abstraction has 4412 states and 14902 transitions. [2021-06-12 22:39:23,394 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) [2021-06-12 22:39:23,394 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 14902 transitions. [2021-06-12 22:39:23,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:23,398 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:23,399 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:23,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-06-12 22:39:23,399 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:23,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:23,399 INFO L82 PathProgramCache]: Analyzing trace with hash 452547946, now seen corresponding path program 241 times [2021-06-12 22:39:23,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:23,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264352276] [2021-06-12 22:39:23,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:23,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:23,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264352276] [2021-06-12 22:39:23,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264352276] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:23,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:23,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:23,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912935597] [2021-06-12 22:39:23,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:23,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:23,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:23,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:23,610 INFO L87 Difference]: Start difference. First operand 4412 states and 14902 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:25,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:25,030 INFO L93 Difference]: Finished difference Result 5331 states and 17974 transitions. [2021-06-12 22:39:25,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-12 22:39:25,030 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:39:25,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:25,038 INFO L225 Difference]: With dead ends: 5331 [2021-06-12 22:39:25,038 INFO L226 Difference]: Without dead ends: 5256 [2021-06-12 22:39:25,039 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 928.6ms TimeCoverageRelationStatistics Valid=302, Invalid=3120, Unknown=0, NotChecked=0, Total=3422 [2021-06-12 22:39:25,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5256 states. [2021-06-12 22:39:25,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5256 to 4400. [2021-06-12 22:39:25,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4400 states, 4399 states have (on average 3.380313707660832) internal successors, (14870), 4399 states have internal predecessors, (14870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:25,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 14870 transitions. [2021-06-12 22:39:25,098 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 14870 transitions. Word has length 39 [2021-06-12 22:39:25,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:25,098 INFO L482 AbstractCegarLoop]: Abstraction has 4400 states and 14870 transitions. [2021-06-12 22:39:25,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:25,098 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 14870 transitions. [2021-06-12 22:39:25,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:25,103 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:25,103 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:25,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-06-12 22:39:25,103 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:25,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:25,103 INFO L82 PathProgramCache]: Analyzing trace with hash 250690024, now seen corresponding path program 242 times [2021-06-12 22:39:25,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:25,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681024864] [2021-06-12 22:39:25,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:25,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:25,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681024864] [2021-06-12 22:39:25,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681024864] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:25,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:25,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:25,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489687041] [2021-06-12 22:39:25,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:25,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:25,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:25,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:25,299 INFO L87 Difference]: Start difference. First operand 4400 states and 14870 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:27,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:27,263 INFO L93 Difference]: Finished difference Result 5490 states and 18381 transitions. [2021-06-12 22:39:27,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-12 22:39:27,264 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:39:27,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:27,272 INFO L225 Difference]: With dead ends: 5490 [2021-06-12 22:39:27,272 INFO L226 Difference]: Without dead ends: 5447 [2021-06-12 22:39:27,272 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1340.3ms TimeCoverageRelationStatistics Valid=440, Invalid=4816, Unknown=0, NotChecked=0, Total=5256 [2021-06-12 22:39:27,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5447 states. [2021-06-12 22:39:27,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5447 to 4409. [2021-06-12 22:39:27,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 3.378856624319419) internal successors, (14894), 4408 states have internal predecessors, (14894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:27,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 14894 transitions. [2021-06-12 22:39:27,330 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 14894 transitions. Word has length 39 [2021-06-12 22:39:27,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:27,330 INFO L482 AbstractCegarLoop]: Abstraction has 4409 states and 14894 transitions. [2021-06-12 22:39:27,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:27,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 14894 transitions. [2021-06-12 22:39:27,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:27,335 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:27,335 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:27,335 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-06-12 22:39:27,335 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:27,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:27,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1529908278, now seen corresponding path program 243 times [2021-06-12 22:39:27,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:27,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271637865] [2021-06-12 22:39:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:27,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:27,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:27,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271637865] [2021-06-12 22:39:27,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271637865] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:27,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:27,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:27,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054573422] [2021-06-12 22:39:27,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:27,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:27,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:27,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:27,516 INFO L87 Difference]: Start difference. First operand 4409 states and 14894 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:29,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:29,429 INFO L93 Difference]: Finished difference Result 5478 states and 18343 transitions. [2021-06-12 22:39:29,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-12 22:39:29,429 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 [2021-06-12 22:39:29,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:29,437 INFO L225 Difference]: With dead ends: 5478 [2021-06-12 22:39:29,437 INFO L226 Difference]: Without dead ends: 5426 [2021-06-12 22:39:29,437 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 1288.1ms TimeCoverageRelationStatistics Valid=432, Invalid=4680, Unknown=0, NotChecked=0, Total=5112 [2021-06-12 22:39:29,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2021-06-12 22:39:29,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 4403. [2021-06-12 22:39:29,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4403 states, 4402 states have (on average 3.379827351203998) internal successors, (14878), 4402 states have internal predecessors, (14878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:29,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4403 states to 4403 states and 14878 transitions. [2021-06-12 22:39:29,497 INFO L78 Accepts]: Start accepts. Automaton has 4403 states and 14878 transitions. Word has length 39 [2021-06-12 22:39:29,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:29,497 INFO L482 AbstractCegarLoop]: Abstraction has 4403 states and 14878 transitions. [2021-06-12 22:39:29,497 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:29,497 INFO L276 IsEmpty]: Start isEmpty. Operand 4403 states and 14878 transitions. [2021-06-12 22:39:29,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:29,501 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:29,501 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:29,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-06-12 22:39:29,502 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:29,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1286729206, now seen corresponding path program 244 times [2021-06-12 22:39:29,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:29,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50119031] [2021-06-12 22:39:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:29,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:29,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:29,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50119031] [2021-06-12 22:39:29,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50119031] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:29,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:29,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:29,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012421225] [2021-06-12 22:39:29,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:29,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:29,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:29,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:29,673 INFO L87 Difference]: Start difference. First operand 4403 states and 14878 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:31,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:31,185 INFO L93 Difference]: Finished difference Result 5475 states and 18297 transitions. [2021-06-12 22:39:31,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-12 22:39:31,186 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:39:31,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:31,194 INFO L225 Difference]: With dead ends: 5475 [2021-06-12 22:39:31,194 INFO L226 Difference]: Without dead ends: 5412 [2021-06-12 22:39:31,195 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 963.6ms TimeCoverageRelationStatistics Valid=329, Invalid=3453, Unknown=0, NotChecked=0, Total=3782 [2021-06-12 22:39:31,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5412 states. [2021-06-12 22:39:31,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5412 to 4403. [2021-06-12 22:39:31,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4403 states, 4402 states have (on average 3.379145842798728) internal successors, (14875), 4402 states have internal predecessors, (14875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:31,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4403 states to 4403 states and 14875 transitions. [2021-06-12 22:39:31,258 INFO L78 Accepts]: Start accepts. Automaton has 4403 states and 14875 transitions. Word has length 39 [2021-06-12 22:39:31,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:31,258 INFO L482 AbstractCegarLoop]: Abstraction has 4403 states and 14875 transitions. [2021-06-12 22:39:31,258 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:31,258 INFO L276 IsEmpty]: Start isEmpty. Operand 4403 states and 14875 transitions. [2021-06-12 22:39:31,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:31,263 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:31,263 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:31,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-06-12 22:39:31,264 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:31,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:31,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1080596332, now seen corresponding path program 245 times [2021-06-12 22:39:31,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:31,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244691918] [2021-06-12 22:39:31,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:31,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:31,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244691918] [2021-06-12 22:39:31,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244691918] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:31,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:31,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:31,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641993897] [2021-06-12 22:39:31,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:31,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:31,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:31,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:31,437 INFO L87 Difference]: Start difference. First operand 4403 states and 14875 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:32,905 INFO L93 Difference]: Finished difference Result 5380 states and 18081 transitions. [2021-06-12 22:39:32,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-12 22:39:32,905 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:39:32,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:32,913 INFO L225 Difference]: With dead ends: 5380 [2021-06-12 22:39:32,913 INFO L226 Difference]: Without dead ends: 5304 [2021-06-12 22:39:32,914 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 927.1ms TimeCoverageRelationStatistics Valid=312, Invalid=3228, Unknown=0, NotChecked=0, Total=3540 [2021-06-12 22:39:32,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5304 states. [2021-06-12 22:39:32,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5304 to 4394. [2021-06-12 22:39:32,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4394 states, 4393 states have (on average 3.3812884133849304) internal successors, (14854), 4393 states have internal predecessors, (14854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:32,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4394 states to 4394 states and 14854 transitions. [2021-06-12 22:39:32,972 INFO L78 Accepts]: Start accepts. Automaton has 4394 states and 14854 transitions. Word has length 39 [2021-06-12 22:39:32,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:32,972 INFO L482 AbstractCegarLoop]: Abstraction has 4394 states and 14854 transitions. [2021-06-12 22:39:32,972 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:32,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4394 states and 14854 transitions. [2021-06-12 22:39:32,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:32,977 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:32,977 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:32,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-06-12 22:39:32,977 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:32,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:32,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1498841964, now seen corresponding path program 246 times [2021-06-12 22:39:32,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:32,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373081659] [2021-06-12 22:39:32,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:33,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:33,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:33,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373081659] [2021-06-12 22:39:33,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373081659] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:33,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:33,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:33,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429962848] [2021-06-12 22:39:33,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:33,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:33,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:33,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:33,176 INFO L87 Difference]: Start difference. First operand 4394 states and 14854 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:35,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:35,326 INFO L93 Difference]: Finished difference Result 5557 states and 18619 transitions. [2021-06-12 22:39:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-12 22:39:35,326 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 [2021-06-12 22:39:35,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:35,334 INFO L225 Difference]: With dead ends: 5557 [2021-06-12 22:39:35,334 INFO L226 Difference]: Without dead ends: 5420 [2021-06-12 22:39:35,334 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1533 ImplicationChecksByTransitivity, 1394.9ms TimeCoverageRelationStatistics Valid=438, Invalid=4964, Unknown=0, NotChecked=0, Total=5402 [2021-06-12 22:39:35,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5420 states. [2021-06-12 22:39:35,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5420 to 4400. [2021-06-12 22:39:35,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4400 states, 4399 states have (on average 3.380313707660832) internal successors, (14870), 4399 states have internal predecessors, (14870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 14870 transitions. [2021-06-12 22:39:35,392 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 14870 transitions. Word has length 39 [2021-06-12 22:39:35,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:35,392 INFO L482 AbstractCegarLoop]: Abstraction has 4400 states and 14870 transitions. [2021-06-12 22:39:35,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:35,393 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 14870 transitions. [2021-06-12 22:39:35,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:35,397 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:35,397 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:35,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-06-12 22:39:35,397 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:35,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:35,397 INFO L82 PathProgramCache]: Analyzing trace with hash 757889866, now seen corresponding path program 247 times [2021-06-12 22:39:35,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:35,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325889477] [2021-06-12 22:39:35,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:35,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:35,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325889477] [2021-06-12 22:39:35,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325889477] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:35,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:35,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:35,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490880586] [2021-06-12 22:39:35,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:35,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:35,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:35,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:35,569 INFO L87 Difference]: Start difference. First operand 4400 states and 14870 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:37,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:37,521 INFO L93 Difference]: Finished difference Result 5529 states and 18482 transitions. [2021-06-12 22:39:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-12 22:39:37,521 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:39:37,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:37,530 INFO L225 Difference]: With dead ends: 5529 [2021-06-12 22:39:37,530 INFO L226 Difference]: Without dead ends: 5465 [2021-06-12 22:39:37,531 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 1288.9ms TimeCoverageRelationStatistics Valid=429, Invalid=4683, Unknown=0, NotChecked=0, Total=5112 [2021-06-12 22:39:37,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5465 states. [2021-06-12 22:39:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5465 to 4409. [2021-06-12 22:39:37,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 3.378856624319419) internal successors, (14894), 4408 states have internal predecessors, (14894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:37,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 14894 transitions. [2021-06-12 22:39:37,596 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 14894 transitions. Word has length 39 [2021-06-12 22:39:37,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:37,596 INFO L482 AbstractCegarLoop]: Abstraction has 4409 states and 14894 transitions. [2021-06-12 22:39:37,596 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) [2021-06-12 22:39:37,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 14894 transitions. [2021-06-12 22:39:37,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:37,601 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:37,601 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:37,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-06-12 22:39:37,601 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:37,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:37,601 INFO L82 PathProgramCache]: Analyzing trace with hash -779529364, now seen corresponding path program 248 times [2021-06-12 22:39:37,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:37,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811763169] [2021-06-12 22:39:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:37,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:37,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811763169] [2021-06-12 22:39:37,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811763169] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:37,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:37,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:37,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624224609] [2021-06-12 22:39:37,774 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:37,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:37,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:37,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:37,774 INFO L87 Difference]: Start difference. First operand 4409 states and 14894 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:39,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:39,250 INFO L93 Difference]: Finished difference Result 5469 states and 18300 transitions. [2021-06-12 22:39:39,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-12 22:39:39,250 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:39:39,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:39,258 INFO L225 Difference]: With dead ends: 5469 [2021-06-12 22:39:39,258 INFO L226 Difference]: Without dead ends: 5406 [2021-06-12 22:39:39,259 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 915.0ms TimeCoverageRelationStatistics Valid=307, Invalid=3233, Unknown=0, NotChecked=0, Total=3540 [2021-06-12 22:39:39,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5406 states. [2021-06-12 22:39:39,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5406 to 4409. [2021-06-12 22:39:39,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 3.378176043557169) internal successors, (14891), 4408 states have internal predecessors, (14891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:39,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 14891 transitions. [2021-06-12 22:39:39,318 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 14891 transitions. Word has length 39 [2021-06-12 22:39:39,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:39,318 INFO L482 AbstractCegarLoop]: Abstraction has 4409 states and 14891 transitions. [2021-06-12 22:39:39,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:39,318 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 14891 transitions. [2021-06-12 22:39:39,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:39,323 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:39,323 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:39,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-06-12 22:39:39,323 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:39,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:39,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1587796174, now seen corresponding path program 249 times [2021-06-12 22:39:39,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:39,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342308418] [2021-06-12 22:39:39,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:39,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:39,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:39,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342308418] [2021-06-12 22:39:39,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342308418] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:39,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:39,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:39,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949537211] [2021-06-12 22:39:39,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:39,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:39,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:39,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:39,505 INFO L87 Difference]: Start difference. First operand 4409 states and 14891 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:40,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:40,983 INFO L93 Difference]: Finished difference Result 5488 states and 18346 transitions. [2021-06-12 22:39:40,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-12 22:39:40,983 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 [2021-06-12 22:39:40,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:40,991 INFO L225 Difference]: With dead ends: 5488 [2021-06-12 22:39:40,992 INFO L226 Difference]: Without dead ends: 5418 [2021-06-12 22:39:40,992 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 934.8ms TimeCoverageRelationStatistics Valid=318, Invalid=3342, Unknown=0, NotChecked=0, Total=3660 [2021-06-12 22:39:41,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5418 states. [2021-06-12 22:39:41,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5418 to 4406. [2021-06-12 22:39:41,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 4405 states have (on average 3.378660612939841) internal successors, (14883), 4405 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:41,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 14883 transitions. [2021-06-12 22:39:41,056 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 14883 transitions. Word has length 39 [2021-06-12 22:39:41,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:41,056 INFO L482 AbstractCegarLoop]: Abstraction has 4406 states and 14883 transitions. [2021-06-12 22:39:41,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:41,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 14883 transitions. [2021-06-12 22:39:41,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:41,060 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:41,060 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:41,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-06-12 22:39:41,061 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:41,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:41,061 INFO L82 PathProgramCache]: Analyzing trace with hash -427888026, now seen corresponding path program 250 times [2021-06-12 22:39:41,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:41,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025875048] [2021-06-12 22:39:41,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:41,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:41,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025875048] [2021-06-12 22:39:41,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025875048] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:41,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:41,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:39:41,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195477158] [2021-06-12 22:39:41,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:39:41,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:41,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:39:41,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:39:41,244 INFO L87 Difference]: Start difference. First operand 4406 states and 14883 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) [2021-06-12 22:39:42,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:42,604 INFO L93 Difference]: Finished difference Result 5326 states and 17971 transitions. [2021-06-12 22:39:42,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-12 22:39:42,605 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 [2021-06-12 22:39:42,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:42,613 INFO L225 Difference]: With dead ends: 5326 [2021-06-12 22:39:42,613 INFO L226 Difference]: Without dead ends: 5250 [2021-06-12 22:39:42,613 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 850.2ms TimeCoverageRelationStatistics Valid=285, Invalid=2795, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:39:42,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5250 states. [2021-06-12 22:39:42,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5250 to 4420. [2021-06-12 22:39:42,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4419 states have (on average 3.374745417515275) internal successors, (14913), 4419 states have internal predecessors, (14913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 14913 transitions. [2021-06-12 22:39:42,696 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 14913 transitions. Word has length 39 [2021-06-12 22:39:42,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:42,696 INFO L482 AbstractCegarLoop]: Abstraction has 4420 states and 14913 transitions. [2021-06-12 22:39:42,696 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) [2021-06-12 22:39:42,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 14913 transitions. [2021-06-12 22:39:42,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:42,700 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:42,700 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:42,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-06-12 22:39:42,701 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:42,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:42,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1975810360, now seen corresponding path program 251 times [2021-06-12 22:39:42,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:42,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766872737] [2021-06-12 22:39:42,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:42,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:42,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766872737] [2021-06-12 22:39:42,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766872737] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:42,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:42,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:42,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324098700] [2021-06-12 22:39:42,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:42,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:42,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:42,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:42,871 INFO L87 Difference]: Start difference. First operand 4420 states and 14913 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:44,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:44,317 INFO L93 Difference]: Finished difference Result 5365 states and 18043 transitions. [2021-06-12 22:39:44,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-12 22:39:44,317 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:39:44,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:44,341 INFO L225 Difference]: With dead ends: 5365 [2021-06-12 22:39:44,341 INFO L226 Difference]: Without dead ends: 5266 [2021-06-12 22:39:44,341 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 895.7ms TimeCoverageRelationStatistics Valid=301, Invalid=3121, Unknown=0, NotChecked=0, Total=3422 [2021-06-12 22:39:44,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5266 states. [2021-06-12 22:39:44,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5266 to 4388. [2021-06-12 22:39:44,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 4387 states have (on average 3.3827216776840667) internal successors, (14840), 4387 states have internal predecessors, (14840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 14840 transitions. [2021-06-12 22:39:44,397 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 14840 transitions. Word has length 39 [2021-06-12 22:39:44,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:44,397 INFO L482 AbstractCegarLoop]: Abstraction has 4388 states and 14840 transitions. [2021-06-12 22:39:44,397 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) [2021-06-12 22:39:44,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 14840 transitions. [2021-06-12 22:39:44,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:44,402 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:44,402 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:44,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-06-12 22:39:44,402 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:44,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:44,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1270762198, now seen corresponding path program 252 times [2021-06-12 22:39:44,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:44,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573036267] [2021-06-12 22:39:44,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:44,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:44,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573036267] [2021-06-12 22:39:44,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573036267] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:44,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:44,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:44,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551362304] [2021-06-12 22:39:44,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:44,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:44,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:44,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:44,576 INFO L87 Difference]: Start difference. First operand 4388 states and 14840 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:46,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:46,322 INFO L93 Difference]: Finished difference Result 5636 states and 18948 transitions. [2021-06-12 22:39:46,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-12 22:39:46,322 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 [2021-06-12 22:39:46,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:46,330 INFO L225 Difference]: With dead ends: 5636 [2021-06-12 22:39:46,330 INFO L226 Difference]: Without dead ends: 5569 [2021-06-12 22:39:46,331 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 1115.9ms TimeCoverageRelationStatistics Valid=426, Invalid=4130, Unknown=0, NotChecked=0, Total=4556 [2021-06-12 22:39:46,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5569 states. [2021-06-12 22:39:46,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5569 to 4406. [2021-06-12 22:39:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 4405 states have (on average 3.379795686719637) internal successors, (14888), 4405 states have internal predecessors, (14888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:46,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 14888 transitions. [2021-06-12 22:39:46,390 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 14888 transitions. Word has length 39 [2021-06-12 22:39:46,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:46,391 INFO L482 AbstractCegarLoop]: Abstraction has 4406 states and 14888 transitions. [2021-06-12 22:39:46,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:46,391 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 14888 transitions. [2021-06-12 22:39:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:46,395 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:46,395 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:46,395 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-06-12 22:39:46,395 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:46,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:46,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1442905416, now seen corresponding path program 253 times [2021-06-12 22:39:46,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:46,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297707601] [2021-06-12 22:39:46,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:46,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:46,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:46,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297707601] [2021-06-12 22:39:46,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297707601] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:46,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:46,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:46,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044874899] [2021-06-12 22:39:46,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:46,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:46,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:46,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:46,570 INFO L87 Difference]: Start difference. First operand 4406 states and 14888 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:48,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:48,238 INFO L93 Difference]: Finished difference Result 5539 states and 18688 transitions. [2021-06-12 22:39:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-12 22:39:48,238 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:39:48,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:48,246 INFO L225 Difference]: With dead ends: 5539 [2021-06-12 22:39:48,246 INFO L226 Difference]: Without dead ends: 5476 [2021-06-12 22:39:48,247 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 1116.7ms TimeCoverageRelationStatistics Valid=419, Invalid=4003, Unknown=0, NotChecked=0, Total=4422 [2021-06-12 22:39:48,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5476 states. [2021-06-12 22:39:48,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5476 to 4406. [2021-06-12 22:39:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 4405 states have (on average 3.3788876276958004) internal successors, (14884), 4405 states have internal predecessors, (14884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 14884 transitions. [2021-06-12 22:39:48,307 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 14884 transitions. Word has length 39 [2021-06-12 22:39:48,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:48,307 INFO L482 AbstractCegarLoop]: Abstraction has 4406 states and 14884 transitions. [2021-06-12 22:39:48,307 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) [2021-06-12 22:39:48,307 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 14884 transitions. [2021-06-12 22:39:48,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:48,312 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:48,312 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:48,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-06-12 22:39:48,312 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:48,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:48,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1815905880, now seen corresponding path program 254 times [2021-06-12 22:39:48,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:48,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88219889] [2021-06-12 22:39:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:48,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:48,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88219889] [2021-06-12 22:39:48,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88219889] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:48,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:48,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:48,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482132216] [2021-06-12 22:39:48,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:48,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:48,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:48,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:48,498 INFO L87 Difference]: Start difference. First operand 4406 states and 14884 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:50,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:50,957 INFO L93 Difference]: Finished difference Result 5805 states and 19318 transitions. [2021-06-12 22:39:50,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-06-12 22:39:50,957 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 [2021-06-12 22:39:50,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:50,965 INFO L225 Difference]: With dead ends: 5805 [2021-06-12 22:39:50,965 INFO L226 Difference]: Without dead ends: 5723 [2021-06-12 22:39:50,966 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2324 ImplicationChecksByTransitivity, 1725.2ms TimeCoverageRelationStatistics Valid=628, Invalid=6854, Unknown=0, NotChecked=0, Total=7482 [2021-06-12 22:39:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5723 states. [2021-06-12 22:39:51,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5723 to 4421. [2021-06-12 22:39:51,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4421 states, 4420 states have (on average 3.3762443438914027) internal successors, (14923), 4420 states have internal predecessors, (14923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:51,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4421 states to 4421 states and 14923 transitions. [2021-06-12 22:39:51,027 INFO L78 Accepts]: Start accepts. Automaton has 4421 states and 14923 transitions. Word has length 39 [2021-06-12 22:39:51,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:51,027 INFO L482 AbstractCegarLoop]: Abstraction has 4421 states and 14923 transitions. [2021-06-12 22:39:51,027 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:51,027 INFO L276 IsEmpty]: Start isEmpty. Operand 4421 states and 14923 transitions. [2021-06-12 22:39:51,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:51,032 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:51,032 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:51,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-06-12 22:39:51,032 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:51,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:51,033 INFO L82 PathProgramCache]: Analyzing trace with hash 35307578, now seen corresponding path program 255 times [2021-06-12 22:39:51,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:51,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818162759] [2021-06-12 22:39:51,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:51,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:51,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818162759] [2021-06-12 22:39:51,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818162759] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:51,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:51,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:51,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662476664] [2021-06-12 22:39:51,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:51,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:51,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:51,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:51,211 INFO L87 Difference]: Start difference. First operand 4421 states and 14923 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:53,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:53,553 INFO L93 Difference]: Finished difference Result 5707 states and 19089 transitions. [2021-06-12 22:39:53,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-06-12 22:39:53,553 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:39:53,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:53,561 INFO L225 Difference]: With dead ends: 5707 [2021-06-12 22:39:53,561 INFO L226 Difference]: Without dead ends: 5655 [2021-06-12 22:39:53,562 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2124 ImplicationChecksByTransitivity, 1635.6ms TimeCoverageRelationStatistics Valid=596, Invalid=6376, Unknown=0, NotChecked=0, Total=6972 [2021-06-12 22:39:53,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5655 states. [2021-06-12 22:39:53,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5655 to 4413. [2021-06-12 22:39:53,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4413 states, 4412 states have (on average 3.377833182230281) internal successors, (14903), 4412 states have internal predecessors, (14903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:53,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 14903 transitions. [2021-06-12 22:39:53,621 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 14903 transitions. Word has length 39 [2021-06-12 22:39:53,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:53,621 INFO L482 AbstractCegarLoop]: Abstraction has 4413 states and 14903 transitions. [2021-06-12 22:39:53,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:53,622 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 14903 transitions. [2021-06-12 22:39:53,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:53,626 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:53,626 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:53,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-06-12 22:39:53,627 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:53,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:53,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1560577846, now seen corresponding path program 256 times [2021-06-12 22:39:53,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:53,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035757897] [2021-06-12 22:39:53,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:53,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:53,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035757897] [2021-06-12 22:39:53,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035757897] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:53,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:53,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:53,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274443749] [2021-06-12 22:39:53,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:53,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:53,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:53,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:53,798 INFO L87 Difference]: Start difference. First operand 4413 states and 14903 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:55,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:55,542 INFO L93 Difference]: Finished difference Result 5676 states and 18986 transitions. [2021-06-12 22:39:55,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-12 22:39:55,543 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 [2021-06-12 22:39:55,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:55,552 INFO L225 Difference]: With dead ends: 5676 [2021-06-12 22:39:55,552 INFO L226 Difference]: Without dead ends: 5621 [2021-06-12 22:39:55,552 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 1189.3ms TimeCoverageRelationStatistics Valid=455, Invalid=4375, Unknown=0, NotChecked=0, Total=4830 [2021-06-12 22:39:55,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5621 states. [2021-06-12 22:39:55,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5621 to 4415. [2021-06-12 22:39:55,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4415 states, 4414 states have (on average 3.3769823289533303) internal successors, (14906), 4414 states have internal predecessors, (14906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:55,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4415 states to 4415 states and 14906 transitions. [2021-06-12 22:39:55,630 INFO L78 Accepts]: Start accepts. Automaton has 4415 states and 14906 transitions. Word has length 39 [2021-06-12 22:39:55,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:55,630 INFO L482 AbstractCegarLoop]: Abstraction has 4415 states and 14906 transitions. [2021-06-12 22:39:55,630 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:55,630 INFO L276 IsEmpty]: Start isEmpty. Operand 4415 states and 14906 transitions. [2021-06-12 22:39:55,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:55,635 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:55,635 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:55,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-06-12 22:39:55,635 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:55,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:55,635 INFO L82 PathProgramCache]: Analyzing trace with hash -387925624, now seen corresponding path program 257 times [2021-06-12 22:39:55,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:55,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194554538] [2021-06-12 22:39:55,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:55,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:55,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194554538] [2021-06-12 22:39:55,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194554538] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:55,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:55,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:55,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486753145] [2021-06-12 22:39:55,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:55,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:55,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:55,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:55,811 INFO L87 Difference]: Start difference. First operand 4415 states and 14906 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:57,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:57,469 INFO L93 Difference]: Finished difference Result 5611 states and 18834 transitions. [2021-06-12 22:39:57,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-12 22:39:57,470 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:39:57,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:57,478 INFO L225 Difference]: With dead ends: 5611 [2021-06-12 22:39:57,478 INFO L226 Difference]: Without dead ends: 5565 [2021-06-12 22:39:57,478 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1117.7ms TimeCoverageRelationStatistics Valid=425, Invalid=3997, Unknown=0, NotChecked=0, Total=4422 [2021-06-12 22:39:57,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2021-06-12 22:39:57,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 4419. [2021-06-12 22:39:57,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4419 states, 4418 states have (on average 3.3757356269805343) internal successors, (14914), 4418 states have internal predecessors, (14914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:57,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4419 states to 4419 states and 14914 transitions. [2021-06-12 22:39:57,538 INFO L78 Accepts]: Start accepts. Automaton has 4419 states and 14914 transitions. Word has length 39 [2021-06-12 22:39:57,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:57,538 INFO L482 AbstractCegarLoop]: Abstraction has 4419 states and 14914 transitions. [2021-06-12 22:39:57,538 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:57,538 INFO L276 IsEmpty]: Start isEmpty. Operand 4419 states and 14914 transitions. [2021-06-12 22:39:57,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:57,542 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:57,542 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:57,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-06-12 22:39:57,543 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:57,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:57,543 INFO L82 PathProgramCache]: Analyzing trace with hash -635391786, now seen corresponding path program 258 times [2021-06-12 22:39:57,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:57,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491267886] [2021-06-12 22:39:57,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:57,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:57,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:57,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491267886] [2021-06-12 22:39:57,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491267886] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:57,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:57,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:57,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421884752] [2021-06-12 22:39:57,713 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:57,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:57,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:57,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:57,713 INFO L87 Difference]: Start difference. First operand 4419 states and 14914 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:59,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:39:59,476 INFO L93 Difference]: Finished difference Result 5583 states and 18783 transitions. [2021-06-12 22:39:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-12 22:39:59,476 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 [2021-06-12 22:39:59,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:39:59,484 INFO L225 Difference]: With dead ends: 5583 [2021-06-12 22:39:59,484 INFO L226 Difference]: Without dead ends: 5534 [2021-06-12 22:39:59,484 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1216.7ms TimeCoverageRelationStatistics Valid=437, Invalid=4119, Unknown=0, NotChecked=0, Total=4556 [2021-06-12 22:39:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2021-06-12 22:39:59,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 4409. [2021-06-12 22:39:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 3.3790834845735027) internal successors, (14895), 4408 states have internal predecessors, (14895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:59,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 14895 transitions. [2021-06-12 22:39:59,546 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 14895 transitions. Word has length 39 [2021-06-12 22:39:59,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:39:59,546 INFO L482 AbstractCegarLoop]: Abstraction has 4409 states and 14895 transitions. [2021-06-12 22:39:59,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:39:59,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 14895 transitions. [2021-06-12 22:39:59,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:39:59,551 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:39:59,551 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:39:59,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-06-12 22:39:59,551 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:39:59,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:39:59,552 INFO L82 PathProgramCache]: Analyzing trace with hash -311728648, now seen corresponding path program 259 times [2021-06-12 22:39:59,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:39:59,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263477217] [2021-06-12 22:39:59,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:39:59,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:39:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:39:59,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:39:59,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263477217] [2021-06-12 22:39:59,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263477217] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:39:59,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:39:59,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:39:59,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163988455] [2021-06-12 22:39:59,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:39:59,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:39:59,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:39:59,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:39:59,723 INFO L87 Difference]: Start difference. First operand 4409 states and 14895 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:01,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:01,535 INFO L93 Difference]: Finished difference Result 5682 states and 19072 transitions. [2021-06-12 22:40:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-12 22:40:01,536 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:40:01,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:01,544 INFO L225 Difference]: With dead ends: 5682 [2021-06-12 22:40:01,544 INFO L226 Difference]: Without dead ends: 5615 [2021-06-12 22:40:01,545 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1231 ImplicationChecksByTransitivity, 1124.2ms TimeCoverageRelationStatistics Valid=410, Invalid=4146, Unknown=0, NotChecked=0, Total=4556 [2021-06-12 22:40:01,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5615 states. [2021-06-12 22:40:01,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5615 to 4427. [2021-06-12 22:40:01,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4426 states have (on average 3.3748305467690916) internal successors, (14937), 4426 states have internal predecessors, (14937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 14937 transitions. [2021-06-12 22:40:01,610 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 14937 transitions. Word has length 39 [2021-06-12 22:40:01,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:01,610 INFO L482 AbstractCegarLoop]: Abstraction has 4427 states and 14937 transitions. [2021-06-12 22:40:01,610 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:01,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 14937 transitions. [2021-06-12 22:40:01,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:01,616 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:01,616 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:01,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-06-12 22:40:01,616 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:01,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:01,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1283586602, now seen corresponding path program 260 times [2021-06-12 22:40:01,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:01,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611388893] [2021-06-12 22:40:01,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:01,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:01,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611388893] [2021-06-12 22:40:01,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611388893] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:01,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:01,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:01,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762034192] [2021-06-12 22:40:01,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:01,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:01,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:01,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:01,794 INFO L87 Difference]: Start difference. First operand 4427 states and 14937 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:03,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:03,547 INFO L93 Difference]: Finished difference Result 5644 states and 18947 transitions. [2021-06-12 22:40:03,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-12 22:40:03,547 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 [2021-06-12 22:40:03,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:03,555 INFO L225 Difference]: With dead ends: 5644 [2021-06-12 22:40:03,556 INFO L226 Difference]: Without dead ends: 5569 [2021-06-12 22:40:03,556 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1181 ImplicationChecksByTransitivity, 1130.7ms TimeCoverageRelationStatistics Valid=403, Invalid=4019, Unknown=0, NotChecked=0, Total=4422 [2021-06-12 22:40:03,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5569 states. [2021-06-12 22:40:03,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5569 to 4427. [2021-06-12 22:40:03,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4426 states have (on average 3.3734749209218258) internal successors, (14931), 4426 states have internal predecessors, (14931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:03,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 14931 transitions. [2021-06-12 22:40:03,621 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 14931 transitions. Word has length 39 [2021-06-12 22:40:03,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:03,621 INFO L482 AbstractCegarLoop]: Abstraction has 4427 states and 14931 transitions. [2021-06-12 22:40:03,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:03,621 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 14931 transitions. [2021-06-12 22:40:03,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:03,662 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:03,662 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:03,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-06-12 22:40:03,662 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:03,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:03,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1485444524, now seen corresponding path program 261 times [2021-06-12 22:40:03,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:03,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198532472] [2021-06-12 22:40:03,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:03,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:03,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198532472] [2021-06-12 22:40:03,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198532472] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:03,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:03,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:03,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869502117] [2021-06-12 22:40:03,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:03,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:03,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:03,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:03,858 INFO L87 Difference]: Start difference. First operand 4427 states and 14931 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:06,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:06,359 INFO L93 Difference]: Finished difference Result 5812 states and 19359 transitions. [2021-06-12 22:40:06,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-06-12 22:40:06,360 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 [2021-06-12 22:40:06,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:06,368 INFO L225 Difference]: With dead ends: 5812 [2021-06-12 22:40:06,368 INFO L226 Difference]: Without dead ends: 5720 [2021-06-12 22:40:06,369 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2330 ImplicationChecksByTransitivity, 1756.4ms TimeCoverageRelationStatistics Valid=605, Invalid=6877, Unknown=0, NotChecked=0, Total=7482 [2021-06-12 22:40:06,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5720 states. [2021-06-12 22:40:06,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5720 to 4432. [2021-06-12 22:40:06,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4432 states, 4431 states have (on average 3.372827804107425) internal successors, (14945), 4431 states have internal predecessors, (14945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4432 states to 4432 states and 14945 transitions. [2021-06-12 22:40:06,432 INFO L78 Accepts]: Start accepts. Automaton has 4432 states and 14945 transitions. Word has length 39 [2021-06-12 22:40:06,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:06,432 INFO L482 AbstractCegarLoop]: Abstraction has 4432 states and 14945 transitions. [2021-06-12 22:40:06,432 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) [2021-06-12 22:40:06,432 INFO L276 IsEmpty]: Start isEmpty. Operand 4432 states and 14945 transitions. [2021-06-12 22:40:06,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:06,437 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:06,437 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:06,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-06-12 22:40:06,437 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:06,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:06,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1028924470, now seen corresponding path program 262 times [2021-06-12 22:40:06,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:06,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692894130] [2021-06-12 22:40:06,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:06,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:06,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:06,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692894130] [2021-06-12 22:40:06,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692894130] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:06,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:06,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:06,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810359885] [2021-06-12 22:40:06,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:06,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:06,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:06,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:06,614 INFO L87 Difference]: Start difference. First operand 4432 states and 14945 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:09,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:09,131 INFO L93 Difference]: Finished difference Result 5751 states and 19210 transitions. [2021-06-12 22:40:09,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-06-12 22:40:09,131 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 [2021-06-12 22:40:09,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:09,140 INFO L225 Difference]: With dead ends: 5751 [2021-06-12 22:40:09,140 INFO L226 Difference]: Without dead ends: 5699 [2021-06-12 22:40:09,140 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2066 ImplicationChecksByTransitivity, 1696.7ms TimeCoverageRelationStatistics Valid=564, Invalid=6242, Unknown=0, NotChecked=0, Total=6806 [2021-06-12 22:40:09,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2021-06-12 22:40:09,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 4426. [2021-06-12 22:40:09,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4426 states, 4425 states have (on average 3.3737853107344633) internal successors, (14929), 4425 states have internal predecessors, (14929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:09,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4426 states to 4426 states and 14929 transitions. [2021-06-12 22:40:09,201 INFO L78 Accepts]: Start accepts. Automaton has 4426 states and 14929 transitions. Word has length 39 [2021-06-12 22:40:09,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:09,201 INFO L482 AbstractCegarLoop]: Abstraction has 4426 states and 14929 transitions. [2021-06-12 22:40:09,201 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:09,201 INFO L276 IsEmpty]: Start isEmpty. Operand 4426 states and 14929 transitions. [2021-06-12 22:40:09,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:09,207 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:09,207 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:09,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-06-12 22:40:09,207 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:09,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:09,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1272103542, now seen corresponding path program 263 times [2021-06-12 22:40:09,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:09,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223126338] [2021-06-12 22:40:09,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:09,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:09,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:09,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223126338] [2021-06-12 22:40:09,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223126338] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:09,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:09,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:09,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084717403] [2021-06-12 22:40:09,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:09,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:09,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:09,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:09,380 INFO L87 Difference]: Start difference. First operand 4426 states and 14929 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:11,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:11,183 INFO L93 Difference]: Finished difference Result 5765 states and 19209 transitions. [2021-06-12 22:40:11,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-12 22:40:11,183 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:40:11,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:11,191 INFO L225 Difference]: With dead ends: 5765 [2021-06-12 22:40:11,191 INFO L226 Difference]: Without dead ends: 5702 [2021-06-12 22:40:11,192 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 1144.8ms TimeCoverageRelationStatistics Valid=431, Invalid=4399, Unknown=0, NotChecked=0, Total=4830 [2021-06-12 22:40:11,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5702 states. [2021-06-12 22:40:11,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5702 to 4429. [2021-06-12 22:40:11,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4429 states, 4428 states have (on average 3.372628726287263) internal successors, (14934), 4428 states have internal predecessors, (14934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:11,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4429 states to 4429 states and 14934 transitions. [2021-06-12 22:40:11,256 INFO L78 Accepts]: Start accepts. Automaton has 4429 states and 14934 transitions. Word has length 39 [2021-06-12 22:40:11,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:11,256 INFO L482 AbstractCegarLoop]: Abstraction has 4429 states and 14934 transitions. [2021-06-12 22:40:11,256 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) [2021-06-12 22:40:11,256 INFO L276 IsEmpty]: Start isEmpty. Operand 4429 states and 14934 transitions. [2021-06-12 22:40:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:11,261 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:11,261 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:11,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-06-12 22:40:11,261 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:11,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:11,261 INFO L82 PathProgramCache]: Analyzing trace with hash -655538216, now seen corresponding path program 264 times [2021-06-12 22:40:11,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:11,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633013809] [2021-06-12 22:40:11,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:11,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:11,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633013809] [2021-06-12 22:40:11,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633013809] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:11,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:11,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:11,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085762363] [2021-06-12 22:40:11,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:11,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:11,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:11,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:11,451 INFO L87 Difference]: Start difference. First operand 4429 states and 14934 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:13,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:13,202 INFO L93 Difference]: Finished difference Result 5656 states and 18956 transitions. [2021-06-12 22:40:13,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-12 22:40:13,202 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 [2021-06-12 22:40:13,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:13,212 INFO L225 Difference]: With dead ends: 5656 [2021-06-12 22:40:13,212 INFO L226 Difference]: Without dead ends: 5610 [2021-06-12 22:40:13,212 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 1166.3ms TimeCoverageRelationStatistics Valid=401, Invalid=4021, Unknown=0, NotChecked=0, Total=4422 [2021-06-12 22:40:13,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5610 states. [2021-06-12 22:40:13,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5610 to 4436. [2021-06-12 22:40:13,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4436 states, 4435 states have (on average 3.370687711386697) internal successors, (14949), 4435 states have internal predecessors, (14949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:13,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4436 states to 4436 states and 14949 transitions. [2021-06-12 22:40:13,276 INFO L78 Accepts]: Start accepts. Automaton has 4436 states and 14949 transitions. Word has length 39 [2021-06-12 22:40:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:13,276 INFO L482 AbstractCegarLoop]: Abstraction has 4436 states and 14949 transitions. [2021-06-12 22:40:13,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:13,276 INFO L276 IsEmpty]: Start isEmpty. Operand 4436 states and 14949 transitions. [2021-06-12 22:40:13,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:13,281 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:13,281 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:13,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-06-12 22:40:13,281 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:13,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:13,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2090605706, now seen corresponding path program 265 times [2021-06-12 22:40:13,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:13,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104551424] [2021-06-12 22:40:13,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:13,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:13,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104551424] [2021-06-12 22:40:13,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104551424] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:13,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:13,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:13,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556653383] [2021-06-12 22:40:13,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:13,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:13,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:13,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:13,465 INFO L87 Difference]: Start difference. First operand 4436 states and 14949 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:15,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:15,284 INFO L93 Difference]: Finished difference Result 5586 states and 18745 transitions. [2021-06-12 22:40:15,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-12 22:40:15,285 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:40:15,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:15,293 INFO L225 Difference]: With dead ends: 5586 [2021-06-12 22:40:15,293 INFO L226 Difference]: Without dead ends: 5525 [2021-06-12 22:40:15,294 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 1156.2ms TimeCoverageRelationStatistics Valid=384, Invalid=3906, Unknown=0, NotChecked=0, Total=4290 [2021-06-12 22:40:15,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5525 states. [2021-06-12 22:40:15,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5525 to 4420. [2021-06-12 22:40:15,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4419 states have (on average 3.375650599683186) internal successors, (14917), 4419 states have internal predecessors, (14917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:15,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 14917 transitions. [2021-06-12 22:40:15,362 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 14917 transitions. Word has length 39 [2021-06-12 22:40:15,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:15,362 INFO L482 AbstractCegarLoop]: Abstraction has 4420 states and 14917 transitions. [2021-06-12 22:40:15,362 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:15,362 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 14917 transitions. [2021-06-12 22:40:15,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:15,367 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:15,367 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:15,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-06-12 22:40:15,367 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:15,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:15,368 INFO L82 PathProgramCache]: Analyzing trace with hash 804122582, now seen corresponding path program 266 times [2021-06-12 22:40:15,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:15,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346423786] [2021-06-12 22:40:15,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:15,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:15,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346423786] [2021-06-12 22:40:15,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346423786] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:15,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:15,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:15,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715034175] [2021-06-12 22:40:15,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:15,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:15,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:15,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:15,574 INFO L87 Difference]: Start difference. First operand 4420 states and 14917 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:17,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:17,258 INFO L93 Difference]: Finished difference Result 5615 states and 19016 transitions. [2021-06-12 22:40:17,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-12 22:40:17,258 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:40:17,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:17,267 INFO L225 Difference]: With dead ends: 5615 [2021-06-12 22:40:17,267 INFO L226 Difference]: Without dead ends: 5552 [2021-06-12 22:40:17,282 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 1058.2ms TimeCoverageRelationStatistics Valid=374, Invalid=3658, Unknown=0, NotChecked=0, Total=4032 [2021-06-12 22:40:17,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5552 states. [2021-06-12 22:40:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5552 to 4412. [2021-06-12 22:40:17,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4412 states, 4411 states have (on average 3.3772387213783723) internal successors, (14897), 4411 states have internal predecessors, (14897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:17,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 14897 transitions. [2021-06-12 22:40:17,345 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 14897 transitions. Word has length 39 [2021-06-12 22:40:17,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:17,345 INFO L482 AbstractCegarLoop]: Abstraction has 4412 states and 14897 transitions. [2021-06-12 22:40:17,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:17,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 14897 transitions. [2021-06-12 22:40:17,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:17,350 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:17,350 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:17,350 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-06-12 22:40:17,350 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:17,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:17,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1279627448, now seen corresponding path program 267 times [2021-06-12 22:40:17,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:17,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284046869] [2021-06-12 22:40:17,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:17,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:17,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:17,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284046869] [2021-06-12 22:40:17,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284046869] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:17,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:17,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:17,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318380254] [2021-06-12 22:40:17,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:17,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:17,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:17,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:17,538 INFO L87 Difference]: Start difference. First operand 4412 states and 14897 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:19,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:19,249 INFO L93 Difference]: Finished difference Result 5686 states and 19189 transitions. [2021-06-12 22:40:19,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-12 22:40:19,249 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:40:19,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:19,259 INFO L225 Difference]: With dead ends: 5686 [2021-06-12 22:40:19,259 INFO L226 Difference]: Without dead ends: 5611 [2021-06-12 22:40:19,259 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 1055.4ms TimeCoverageRelationStatistics Valid=374, Invalid=3658, Unknown=0, NotChecked=0, Total=4032 [2021-06-12 22:40:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5611 states. [2021-06-12 22:40:19,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5611 to 4400. [2021-06-12 22:40:19,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4400 states, 4399 states have (on average 3.3796317344851103) internal successors, (14867), 4399 states have internal predecessors, (14867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:19,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 14867 transitions. [2021-06-12 22:40:19,325 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 14867 transitions. Word has length 39 [2021-06-12 22:40:19,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:19,325 INFO L482 AbstractCegarLoop]: Abstraction has 4400 states and 14867 transitions. [2021-06-12 22:40:19,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:19,325 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 14867 transitions. [2021-06-12 22:40:19,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:19,330 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:19,330 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:19,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-06-12 22:40:19,330 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:19,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:19,330 INFO L82 PathProgramCache]: Analyzing trace with hash 558357304, now seen corresponding path program 268 times [2021-06-12 22:40:19,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:19,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153638500] [2021-06-12 22:40:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:19,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:19,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153638500] [2021-06-12 22:40:19,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153638500] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:19,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:19,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:19,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412660209] [2021-06-12 22:40:19,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:19,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:19,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:19,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:19,509 INFO L87 Difference]: Start difference. First operand 4400 states and 14867 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:21,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:21,384 INFO L93 Difference]: Finished difference Result 6230 states and 20933 transitions. [2021-06-12 22:40:21,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-12 22:40:21,385 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:40:21,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:21,394 INFO L225 Difference]: With dead ends: 6230 [2021-06-12 22:40:21,395 INFO L226 Difference]: Without dead ends: 6175 [2021-06-12 22:40:21,395 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 1096.8ms TimeCoverageRelationStatistics Valid=396, Invalid=4026, Unknown=0, NotChecked=0, Total=4422 [2021-06-12 22:40:21,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6175 states. [2021-06-12 22:40:21,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6175 to 4406. [2021-06-12 22:40:21,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4406 states, 4405 states have (on average 3.3779795686719636) internal successors, (14880), 4405 states have internal predecessors, (14880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 14880 transitions. [2021-06-12 22:40:21,461 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 14880 transitions. Word has length 39 [2021-06-12 22:40:21,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:21,461 INFO L482 AbstractCegarLoop]: Abstraction has 4406 states and 14880 transitions. [2021-06-12 22:40:21,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:21,461 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 14880 transitions. [2021-06-12 22:40:21,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:21,465 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:21,465 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:21,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-06-12 22:40:21,466 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:21,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:21,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1895415318, now seen corresponding path program 269 times [2021-06-12 22:40:21,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:21,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785801879] [2021-06-12 22:40:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:21,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:21,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785801879] [2021-06-12 22:40:21,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785801879] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:21,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:21,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:21,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690456010] [2021-06-12 22:40:21,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:21,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:21,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:21,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:21,638 INFO L87 Difference]: Start difference. First operand 4406 states and 14880 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:23,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:23,701 INFO L93 Difference]: Finished difference Result 6218 states and 20895 transitions. [2021-06-12 22:40:23,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-12 22:40:23,702 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 [2021-06-12 22:40:23,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:23,711 INFO L225 Difference]: With dead ends: 6218 [2021-06-12 22:40:23,712 INFO L226 Difference]: Without dead ends: 6145 [2021-06-12 22:40:23,712 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 1087.6ms TimeCoverageRelationStatistics Valid=396, Invalid=4026, Unknown=0, NotChecked=0, Total=4422 [2021-06-12 22:40:23,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6145 states. [2021-06-12 22:40:23,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6145 to 4396. [2021-06-12 22:40:23,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4396 states, 4395 states have (on average 3.380887372013652) internal successors, (14859), 4395 states have internal predecessors, (14859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 14859 transitions. [2021-06-12 22:40:23,781 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 14859 transitions. Word has length 39 [2021-06-12 22:40:23,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:23,781 INFO L482 AbstractCegarLoop]: Abstraction has 4396 states and 14859 transitions. [2021-06-12 22:40:23,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:23,781 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 14859 transitions. [2021-06-12 22:40:23,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:23,786 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:23,786 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:23,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-06-12 22:40:23,786 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:23,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:23,787 INFO L82 PathProgramCache]: Analyzing trace with hash -544522038, now seen corresponding path program 270 times [2021-06-12 22:40:23,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:23,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743744133] [2021-06-12 22:40:23,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:23,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:23,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743744133] [2021-06-12 22:40:23,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743744133] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:23,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:23,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:23,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659938533] [2021-06-12 22:40:23,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:23,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:23,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:23,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:23,982 INFO L87 Difference]: Start difference. First operand 4396 states and 14859 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:27,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:27,138 INFO L93 Difference]: Finished difference Result 8826 states and 29328 transitions. [2021-06-12 22:40:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-06-12 22:40:27,138 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 [2021-06-12 22:40:27,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:27,151 INFO L225 Difference]: With dead ends: 8826 [2021-06-12 22:40:27,151 INFO L226 Difference]: Without dead ends: 8626 [2021-06-12 22:40:27,152 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3514 ImplicationChecksByTransitivity, 2026.9ms TimeCoverageRelationStatistics Valid=797, Invalid=9709, Unknown=0, NotChecked=0, Total=10506 [2021-06-12 22:40:27,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8626 states. [2021-06-12 22:40:27,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8626 to 5000. [2021-06-12 22:40:27,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5000 states, 4999 states have (on average 3.396879375875175) internal successors, (16981), 4999 states have internal predecessors, (16981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:27,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5000 states to 5000 states and 16981 transitions. [2021-06-12 22:40:27,258 INFO L78 Accepts]: Start accepts. Automaton has 5000 states and 16981 transitions. Word has length 39 [2021-06-12 22:40:27,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:27,258 INFO L482 AbstractCegarLoop]: Abstraction has 5000 states and 16981 transitions. [2021-06-12 22:40:27,258 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:27,258 INFO L276 IsEmpty]: Start isEmpty. Operand 5000 states and 16981 transitions. [2021-06-12 22:40:27,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:27,263 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:27,263 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:27,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-06-12 22:40:27,264 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:27,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:27,264 INFO L82 PathProgramCache]: Analyzing trace with hash 628130184, now seen corresponding path program 271 times [2021-06-12 22:40:27,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:27,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189965427] [2021-06-12 22:40:27,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:27,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:27,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189965427] [2021-06-12 22:40:27,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189965427] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:27,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:27,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:27,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110713713] [2021-06-12 22:40:27,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:27,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:27,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:27,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:27,454 INFO L87 Difference]: Start difference. First operand 5000 states and 16981 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:30,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:30,481 INFO L93 Difference]: Finished difference Result 8993 states and 29811 transitions. [2021-06-12 22:40:30,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-06-12 22:40:30,482 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:40:30,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:30,494 INFO L225 Difference]: With dead ends: 8993 [2021-06-12 22:40:30,495 INFO L226 Difference]: Without dead ends: 8756 [2021-06-12 22:40:30,495 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3112 ImplicationChecksByTransitivity, 1889.9ms TimeCoverageRelationStatistics Valid=751, Invalid=8755, Unknown=0, NotChecked=0, Total=9506 [2021-06-12 22:40:30,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8756 states. [2021-06-12 22:40:30,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8756 to 4980. [2021-06-12 22:40:30,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4980 states, 4979 states have (on average 3.4004820245029124) internal successors, (16931), 4979 states have internal predecessors, (16931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:30,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4980 states to 4980 states and 16931 transitions. [2021-06-12 22:40:30,596 INFO L78 Accepts]: Start accepts. Automaton has 4980 states and 16931 transitions. Word has length 39 [2021-06-12 22:40:30,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:30,596 INFO L482 AbstractCegarLoop]: Abstraction has 4980 states and 16931 transitions. [2021-06-12 22:40:30,596 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) [2021-06-12 22:40:30,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4980 states and 16931 transitions. [2021-06-12 22:40:30,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:30,601 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:30,601 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:30,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-06-12 22:40:30,602 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:30,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:30,602 INFO L82 PathProgramCache]: Analyzing trace with hash 560385304, now seen corresponding path program 272 times [2021-06-12 22:40:30,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:30,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698673715] [2021-06-12 22:40:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:30,833 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:30,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698673715] [2021-06-12 22:40:30,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698673715] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:30,833 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:30,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:30,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342711530] [2021-06-12 22:40:30,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:30,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:30,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:30,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:30,833 INFO L87 Difference]: Start difference. First operand 4980 states and 16931 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:33,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:33,894 INFO L93 Difference]: Finished difference Result 8741 states and 29144 transitions. [2021-06-12 22:40:33,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-06-12 22:40:33,895 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 [2021-06-12 22:40:33,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:33,908 INFO L225 Difference]: With dead ends: 8741 [2021-06-12 22:40:33,908 INFO L226 Difference]: Without dead ends: 8609 [2021-06-12 22:40:33,909 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3353 ImplicationChecksByTransitivity, 1954.0ms TimeCoverageRelationStatistics Valid=761, Invalid=9339, Unknown=0, NotChecked=0, Total=10100 [2021-06-12 22:40:33,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8609 states. [2021-06-12 22:40:34,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8609 to 5021. [2021-06-12 22:40:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 5020 states have (on average 3.393426294820717) internal successors, (17035), 5020 states have internal predecessors, (17035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:34,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 17035 transitions. [2021-06-12 22:40:34,020 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 17035 transitions. Word has length 39 [2021-06-12 22:40:34,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:34,020 INFO L482 AbstractCegarLoop]: Abstraction has 5021 states and 17035 transitions. [2021-06-12 22:40:34,020 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:34,021 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 17035 transitions. [2021-06-12 22:40:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:34,027 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:34,027 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:34,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-06-12 22:40:34,027 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:34,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:34,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1367256454, now seen corresponding path program 273 times [2021-06-12 22:40:34,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:34,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909099756] [2021-06-12 22:40:34,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:34,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:34,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909099756] [2021-06-12 22:40:34,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909099756] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:34,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:34,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:34,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027243279] [2021-06-12 22:40:34,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:34,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:34,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:34,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:34,220 INFO L87 Difference]: Start difference. First operand 5021 states and 17035 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:37,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:37,154 INFO L93 Difference]: Finished difference Result 8871 states and 29524 transitions. [2021-06-12 22:40:37,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-06-12 22:40:37,154 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:40:37,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:37,167 INFO L225 Difference]: With dead ends: 8871 [2021-06-12 22:40:37,168 INFO L226 Difference]: Without dead ends: 8706 [2021-06-12 22:40:37,168 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2960 ImplicationChecksByTransitivity, 1818.7ms TimeCoverageRelationStatistics Valid=715, Invalid=8405, Unknown=0, NotChecked=0, Total=9120 [2021-06-12 22:40:37,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8706 states. [2021-06-12 22:40:37,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8706 to 5003. [2021-06-12 22:40:37,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5003 states, 5002 states have (on average 3.3976409436225508) internal successors, (16995), 5002 states have internal predecessors, (16995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:37,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5003 states to 5003 states and 16995 transitions. [2021-06-12 22:40:37,273 INFO L78 Accepts]: Start accepts. Automaton has 5003 states and 16995 transitions. Word has length 39 [2021-06-12 22:40:37,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:37,273 INFO L482 AbstractCegarLoop]: Abstraction has 5003 states and 16995 transitions. [2021-06-12 22:40:37,273 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) [2021-06-12 22:40:37,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5003 states and 16995 transitions. [2021-06-12 22:40:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:37,279 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:37,279 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:37,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-06-12 22:40:37,279 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:37,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:37,279 INFO L82 PathProgramCache]: Analyzing trace with hash 699557460, now seen corresponding path program 274 times [2021-06-12 22:40:37,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:37,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047362136] [2021-06-12 22:40:37,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:37,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:37,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047362136] [2021-06-12 22:40:37,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047362136] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:37,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:37,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:37,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633427334] [2021-06-12 22:40:37,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:37,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:37,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:37,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:37,456 INFO L87 Difference]: Start difference. First operand 5003 states and 16995 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:39,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:39,954 INFO L93 Difference]: Finished difference Result 6507 states and 21685 transitions. [2021-06-12 22:40:39,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-06-12 22:40:39,954 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 [2021-06-12 22:40:39,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:39,963 INFO L225 Difference]: With dead ends: 6507 [2021-06-12 22:40:39,964 INFO L226 Difference]: Without dead ends: 6373 [2021-06-12 22:40:39,964 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2186 ImplicationChecksByTransitivity, 1721.1ms TimeCoverageRelationStatistics Valid=579, Invalid=6561, Unknown=0, NotChecked=0, Total=7140 [2021-06-12 22:40:39,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6373 states. [2021-06-12 22:40:40,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6373 to 5016. [2021-06-12 22:40:40,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5016 states, 5015 states have (on average 3.39740777666999) internal successors, (17038), 5015 states have internal predecessors, (17038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:40,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5016 states to 5016 states and 17038 transitions. [2021-06-12 22:40:40,033 INFO L78 Accepts]: Start accepts. Automaton has 5016 states and 17038 transitions. Word has length 39 [2021-06-12 22:40:40,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:40,034 INFO L482 AbstractCegarLoop]: Abstraction has 5016 states and 17038 transitions. [2021-06-12 22:40:40,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:40,034 INFO L276 IsEmpty]: Start isEmpty. Operand 5016 states and 17038 transitions. [2021-06-12 22:40:40,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:40,039 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:40,039 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:40,039 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-06-12 22:40:40,039 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:40,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:40,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1618041030, now seen corresponding path program 275 times [2021-06-12 22:40:40,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:40,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257127161] [2021-06-12 22:40:40,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:40,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:40,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257127161] [2021-06-12 22:40:40,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257127161] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:40,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:40,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:40,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201642964] [2021-06-12 22:40:40,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:40,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:40,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:40,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:40,219 INFO L87 Difference]: Start difference. First operand 5016 states and 17038 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:41,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:41,948 INFO L93 Difference]: Finished difference Result 6279 states and 21136 transitions. [2021-06-12 22:40:41,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-12 22:40:41,948 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:40:41,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:41,957 INFO L225 Difference]: With dead ends: 6279 [2021-06-12 22:40:41,957 INFO L226 Difference]: Without dead ends: 6236 [2021-06-12 22:40:41,958 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 1046.9ms TimeCoverageRelationStatistics Valid=370, Invalid=3790, Unknown=0, NotChecked=0, Total=4160 [2021-06-12 22:40:41,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6236 states. [2021-06-12 22:40:42,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6236 to 5022. [2021-06-12 22:40:42,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5022 states, 5021 states have (on average 3.395937064329815) internal successors, (17051), 5021 states have internal predecessors, (17051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5022 states to 5022 states and 17051 transitions. [2021-06-12 22:40:42,029 INFO L78 Accepts]: Start accepts. Automaton has 5022 states and 17051 transitions. Word has length 39 [2021-06-12 22:40:42,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:42,029 INFO L482 AbstractCegarLoop]: Abstraction has 5022 states and 17051 transitions. [2021-06-12 22:40:42,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:42,029 INFO L276 IsEmpty]: Start isEmpty. Operand 5022 states and 17051 transitions. [2021-06-12 22:40:42,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:42,034 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:42,034 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:42,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-06-12 22:40:42,034 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:42,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:42,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1638189764, now seen corresponding path program 276 times [2021-06-12 22:40:42,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:42,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86270104] [2021-06-12 22:40:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:42,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:42,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86270104] [2021-06-12 22:40:42,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86270104] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:42,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:42,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:42,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043728048] [2021-06-12 22:40:42,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:42,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:42,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:42,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:42,227 INFO L87 Difference]: Start difference. First operand 5022 states and 17051 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:43,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:43,989 INFO L93 Difference]: Finished difference Result 6239 states and 21053 transitions. [2021-06-12 22:40:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-12 22:40:43,989 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:40:43,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:43,997 INFO L225 Difference]: With dead ends: 6239 [2021-06-12 22:40:43,998 INFO L226 Difference]: Without dead ends: 6196 [2021-06-12 22:40:43,998 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 1121.1ms TimeCoverageRelationStatistics Valid=382, Invalid=3908, Unknown=0, NotChecked=0, Total=4290 [2021-06-12 22:40:44,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6196 states. [2021-06-12 22:40:44,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6196 to 5018. [2021-06-12 22:40:44,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5017 states have (on average 3.396651385290014) internal successors, (17041), 5017 states have internal predecessors, (17041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:44,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 17041 transitions. [2021-06-12 22:40:44,064 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 17041 transitions. Word has length 39 [2021-06-12 22:40:44,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:44,064 INFO L482 AbstractCegarLoop]: Abstraction has 5018 states and 17041 transitions. [2021-06-12 22:40:44,064 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:44,064 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 17041 transitions. [2021-06-12 22:40:44,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:44,070 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:44,070 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:44,070 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-06-12 22:40:44,070 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:44,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:44,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1504274044, now seen corresponding path program 277 times [2021-06-12 22:40:44,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:44,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838721288] [2021-06-12 22:40:44,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:44,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:44,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838721288] [2021-06-12 22:40:44,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838721288] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:44,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:44,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:44,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799075407] [2021-06-12 22:40:44,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:44,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:44,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:44,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:44,241 INFO L87 Difference]: Start difference. First operand 5018 states and 17041 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:46,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:46,016 INFO L93 Difference]: Finished difference Result 6310 states and 21213 transitions. [2021-06-12 22:40:46,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-12 22:40:46,017 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:40:46,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:46,026 INFO L225 Difference]: With dead ends: 6310 [2021-06-12 22:40:46,026 INFO L226 Difference]: Without dead ends: 6250 [2021-06-12 22:40:46,026 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1160.1ms TimeCoverageRelationStatistics Valid=401, Invalid=4155, Unknown=0, NotChecked=0, Total=4556 [2021-06-12 22:40:46,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6250 states. [2021-06-12 22:40:46,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6250 to 5018. [2021-06-12 22:40:46,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5017 states have (on average 3.396651385290014) internal successors, (17041), 5017 states have internal predecessors, (17041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 17041 transitions. [2021-06-12 22:40:46,094 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 17041 transitions. Word has length 39 [2021-06-12 22:40:46,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:46,094 INFO L482 AbstractCegarLoop]: Abstraction has 5018 states and 17041 transitions. [2021-06-12 22:40:46,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:46,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 17041 transitions. [2021-06-12 22:40:46,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:46,100 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:46,100 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:46,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-06-12 22:40:46,100 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:46,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:46,100 INFO L82 PathProgramCache]: Analyzing trace with hash 711126710, now seen corresponding path program 278 times [2021-06-12 22:40:46,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:46,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094537417] [2021-06-12 22:40:46,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:46,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:46,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094537417] [2021-06-12 22:40:46,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094537417] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:46,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:46,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:40:46,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021518049] [2021-06-12 22:40:46,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:40:46,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:46,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:40:46,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:40:46,263 INFO L87 Difference]: Start difference. First operand 5018 states and 17041 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) [2021-06-12 22:40:47,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:47,849 INFO L93 Difference]: Finished difference Result 6281 states and 21154 transitions. [2021-06-12 22:40:47,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-12 22:40:47,850 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 [2021-06-12 22:40:47,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:47,859 INFO L225 Difference]: With dead ends: 6281 [2021-06-12 22:40:47,859 INFO L226 Difference]: Without dead ends: 6205 [2021-06-12 22:40:47,860 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 1010.4ms TimeCoverageRelationStatistics Valid=358, Invalid=3548, Unknown=0, NotChecked=0, Total=3906 [2021-06-12 22:40:47,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6205 states. [2021-06-12 22:40:47,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6205 to 5026. [2021-06-12 22:40:47,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 5025 states have (on average 3.3944278606965175) internal successors, (17057), 5025 states have internal predecessors, (17057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 17057 transitions. [2021-06-12 22:40:47,935 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 17057 transitions. Word has length 39 [2021-06-12 22:40:47,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:47,936 INFO L482 AbstractCegarLoop]: Abstraction has 5026 states and 17057 transitions. [2021-06-12 22:40:47,936 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) [2021-06-12 22:40:47,936 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 17057 transitions. [2021-06-12 22:40:47,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:47,941 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:47,941 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:47,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-06-12 22:40:47,941 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:47,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:47,941 INFO L82 PathProgramCache]: Analyzing trace with hash -306926902, now seen corresponding path program 279 times [2021-06-12 22:40:47,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:47,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545943289] [2021-06-12 22:40:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:48,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:48,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545943289] [2021-06-12 22:40:48,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545943289] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:48,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:48,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:48,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315298709] [2021-06-12 22:40:48,115 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:48,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:48,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:48,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:48,115 INFO L87 Difference]: Start difference. First operand 5026 states and 17057 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:49,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:49,868 INFO L93 Difference]: Finished difference Result 6263 states and 21100 transitions. [2021-06-12 22:40:49,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-12 22:40:49,869 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:40:49,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:49,878 INFO L225 Difference]: With dead ends: 6263 [2021-06-12 22:40:49,878 INFO L226 Difference]: Without dead ends: 6193 [2021-06-12 22:40:49,879 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 1134.8ms TimeCoverageRelationStatistics Valid=383, Invalid=4039, Unknown=0, NotChecked=0, Total=4422 [2021-06-12 22:40:49,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6193 states. [2021-06-12 22:40:49,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6193 to 5014. [2021-06-12 22:40:49,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 5013 states have (on average 3.3965689208059047) internal successors, (17027), 5013 states have internal predecessors, (17027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:49,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 17027 transitions. [2021-06-12 22:40:49,948 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 17027 transitions. Word has length 39 [2021-06-12 22:40:49,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:49,948 INFO L482 AbstractCegarLoop]: Abstraction has 5014 states and 17027 transitions. [2021-06-12 22:40:49,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:49,948 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 17027 transitions. [2021-06-12 22:40:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:49,976 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:49,976 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:49,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-06-12 22:40:49,976 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:49,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:49,977 INFO L82 PathProgramCache]: Analyzing trace with hash 169460968, now seen corresponding path program 280 times [2021-06-12 22:40:49,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:49,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389435655] [2021-06-12 22:40:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:50,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:50,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:50,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389435655] [2021-06-12 22:40:50,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389435655] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:50,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:50,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:50,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568594796] [2021-06-12 22:40:50,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:50,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:50,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:50,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:50,155 INFO L87 Difference]: Start difference. First operand 5014 states and 17027 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:52,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:52,586 INFO L93 Difference]: Finished difference Result 6506 states and 21713 transitions. [2021-06-12 22:40:52,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-06-12 22:40:52,586 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:40:52,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:52,595 INFO L225 Difference]: With dead ends: 6506 [2021-06-12 22:40:52,595 INFO L226 Difference]: Without dead ends: 6362 [2021-06-12 22:40:52,596 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2188 ImplicationChecksByTransitivity, 1664.8ms TimeCoverageRelationStatistics Valid=569, Invalid=6571, Unknown=0, NotChecked=0, Total=7140 [2021-06-12 22:40:52,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6362 states. [2021-06-12 22:40:52,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6362 to 5023. [2021-06-12 22:40:52,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5023 states, 5022 states have (on average 3.3944643568299484) internal successors, (17047), 5022 states have internal predecessors, (17047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5023 states to 5023 states and 17047 transitions. [2021-06-12 22:40:52,666 INFO L78 Accepts]: Start accepts. Automaton has 5023 states and 17047 transitions. Word has length 39 [2021-06-12 22:40:52,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:52,666 INFO L482 AbstractCegarLoop]: Abstraction has 5023 states and 17047 transitions. [2021-06-12 22:40:52,666 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:52,666 INFO L276 IsEmpty]: Start isEmpty. Operand 5023 states and 17047 transitions. [2021-06-12 22:40:52,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:52,671 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:52,671 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:52,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-06-12 22:40:52,671 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:52,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:52,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1367958262, now seen corresponding path program 281 times [2021-06-12 22:40:52,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:52,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32895319] [2021-06-12 22:40:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:52,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:52,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:52,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32895319] [2021-06-12 22:40:52,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32895319] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:52,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:52,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:52,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573784855] [2021-06-12 22:40:52,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:52,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:52,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:52,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:52,845 INFO L87 Difference]: Start difference. First operand 5023 states and 17047 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:54,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:54,453 INFO L93 Difference]: Finished difference Result 6320 states and 21252 transitions. [2021-06-12 22:40:54,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-12 22:40:54,453 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:40:54,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:54,463 INFO L225 Difference]: With dead ends: 6320 [2021-06-12 22:40:54,463 INFO L226 Difference]: Without dead ends: 6277 [2021-06-12 22:40:54,463 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 998.1ms TimeCoverageRelationStatistics Valid=359, Invalid=3801, Unknown=0, NotChecked=0, Total=4160 [2021-06-12 22:40:54,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6277 states. [2021-06-12 22:40:54,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6277 to 5032. [2021-06-12 22:40:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5032 states, 5031 states have (on average 3.392566090240509) internal successors, (17068), 5031 states have internal predecessors, (17068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:54,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5032 states to 5032 states and 17068 transitions. [2021-06-12 22:40:54,533 INFO L78 Accepts]: Start accepts. Automaton has 5032 states and 17068 transitions. Word has length 39 [2021-06-12 22:40:54,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:54,533 INFO L482 AbstractCegarLoop]: Abstraction has 5032 states and 17068 transitions. [2021-06-12 22:40:54,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:54,534 INFO L276 IsEmpty]: Start isEmpty. Operand 5032 states and 17068 transitions. [2021-06-12 22:40:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:54,539 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:54,539 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:54,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-06-12 22:40:54,539 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:54,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:54,539 INFO L82 PathProgramCache]: Analyzing trace with hash 382148874, now seen corresponding path program 282 times [2021-06-12 22:40:54,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:54,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712699550] [2021-06-12 22:40:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:54,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:54,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:54,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712699550] [2021-06-12 22:40:54,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712699550] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:54,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:54,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:54,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201988531] [2021-06-12 22:40:54,739 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:54,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:54,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:54,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:54,739 INFO L87 Difference]: Start difference. First operand 5032 states and 17068 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:56,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:56,431 INFO L93 Difference]: Finished difference Result 6228 states and 20986 transitions. [2021-06-12 22:40:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-12 22:40:56,431 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:40:56,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:56,440 INFO L225 Difference]: With dead ends: 6228 [2021-06-12 22:40:56,441 INFO L226 Difference]: Without dead ends: 6177 [2021-06-12 22:40:56,441 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 1061.6ms TimeCoverageRelationStatistics Valid=355, Invalid=3805, Unknown=0, NotChecked=0, Total=4160 [2021-06-12 22:40:56,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6177 states. [2021-06-12 22:40:56,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6177 to 5026. [2021-06-12 22:40:56,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5026 states, 5025 states have (on average 3.3934328358208954) internal successors, (17052), 5025 states have internal predecessors, (17052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:56,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5026 states to 5026 states and 17052 transitions. [2021-06-12 22:40:56,508 INFO L78 Accepts]: Start accepts. Automaton has 5026 states and 17052 transitions. Word has length 39 [2021-06-12 22:40:56,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:56,508 INFO L482 AbstractCegarLoop]: Abstraction has 5026 states and 17052 transitions. [2021-06-12 22:40:56,508 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:56,508 INFO L276 IsEmpty]: Start isEmpty. Operand 5026 states and 17052 transitions. [2021-06-12 22:40:56,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:56,513 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:56,513 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:56,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-06-12 22:40:56,513 INFO L430 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:56,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:56,513 INFO L82 PathProgramCache]: Analyzing trace with hash 999367276, now seen corresponding path program 283 times [2021-06-12 22:40:56,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:56,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193020118] [2021-06-12 22:40:56,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:56,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:56,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193020118] [2021-06-12 22:40:56,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193020118] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:56,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:56,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:40:56,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964869989] [2021-06-12 22:40:56,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:40:56,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:56,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:40:56,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:40:56,692 INFO L87 Difference]: Start difference. First operand 5026 states and 17052 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:58,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:40:58,440 INFO L93 Difference]: Finished difference Result 6386 states and 21401 transitions. [2021-06-12 22:40:58,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-12 22:40:58,440 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 [2021-06-12 22:40:58,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:40:58,450 INFO L225 Difference]: With dead ends: 6386 [2021-06-12 22:40:58,450 INFO L226 Difference]: Without dead ends: 6314 [2021-06-12 22:40:58,450 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 1105.6ms TimeCoverageRelationStatistics Valid=391, Invalid=4165, Unknown=0, NotChecked=0, Total=4556 [2021-06-12 22:40:58,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6314 states. [2021-06-12 22:40:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6314 to 5021. [2021-06-12 22:40:58,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 5020 states have (on average 3.394223107569721) internal successors, (17039), 5020 states have internal predecessors, (17039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:58,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 17039 transitions. [2021-06-12 22:40:58,519 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 17039 transitions. Word has length 39 [2021-06-12 22:40:58,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:40:58,519 INFO L482 AbstractCegarLoop]: Abstraction has 5021 states and 17039 transitions. [2021-06-12 22:40:58,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:40:58,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 17039 transitions. [2021-06-12 22:40:58,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:40:58,525 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:40:58,525 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:40:58,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-06-12 22:40:58,525 INFO L430 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:40:58,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:40:58,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1016316924, now seen corresponding path program 284 times [2021-06-12 22:40:58,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:40:58,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62627634] [2021-06-12 22:40:58,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:40:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:40:58,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:40:58,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:40:58,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62627634] [2021-06-12 22:40:58,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62627634] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:40:58,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:40:58,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:40:58,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091014753] [2021-06-12 22:40:58,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:40:58,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:40:58,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:40:58,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:40:58,685 INFO L87 Difference]: Start difference. First operand 5021 states and 17039 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) [2021-06-12 22:41:00,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:00,236 INFO L93 Difference]: Finished difference Result 6267 states and 21138 transitions. [2021-06-12 22:41:00,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-12 22:41:00,236 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 [2021-06-12 22:41:00,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:00,245 INFO L225 Difference]: With dead ends: 6267 [2021-06-12 22:41:00,245 INFO L226 Difference]: Without dead ends: 6191 [2021-06-12 22:41:00,246 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 961.7ms TimeCoverageRelationStatistics Valid=348, Invalid=3434, Unknown=0, NotChecked=0, Total=3782 [2021-06-12 22:41:00,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6191 states. [2021-06-12 22:41:00,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6191 to 5035. [2021-06-12 22:41:00,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5035 states, 5034 states have (on average 3.3907429479539135) internal successors, (17069), 5034 states have internal predecessors, (17069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:00,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5035 states to 5035 states and 17069 transitions. [2021-06-12 22:41:00,315 INFO L78 Accepts]: Start accepts. Automaton has 5035 states and 17069 transitions. Word has length 39 [2021-06-12 22:41:00,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:00,315 INFO L482 AbstractCegarLoop]: Abstraction has 5035 states and 17069 transitions. [2021-06-12 22:41:00,315 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) [2021-06-12 22:41:00,315 INFO L276 IsEmpty]: Start isEmpty. Operand 5035 states and 17069 transitions. [2021-06-12 22:41:00,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:00,320 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:00,320 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:00,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-06-12 22:41:00,321 INFO L430 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:00,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:00,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1730728038, now seen corresponding path program 285 times [2021-06-12 22:41:00,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:00,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639668801] [2021-06-12 22:41:00,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:00,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:00,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639668801] [2021-06-12 22:41:00,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639668801] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:00,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:00,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:00,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990290381] [2021-06-12 22:41:00,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:00,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:00,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:00,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:00,493 INFO L87 Difference]: Start difference. First operand 5035 states and 17069 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:02,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:02,126 INFO L93 Difference]: Finished difference Result 6306 states and 21210 transitions. [2021-06-12 22:41:02,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-12 22:41:02,126 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:02,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:02,136 INFO L225 Difference]: With dead ends: 6306 [2021-06-12 22:41:02,136 INFO L226 Difference]: Without dead ends: 6215 [2021-06-12 22:41:02,136 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 1022.9ms TimeCoverageRelationStatistics Valid=366, Invalid=3794, Unknown=0, NotChecked=0, Total=4160 [2021-06-12 22:41:02,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2021-06-12 22:41:02,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 5011. [2021-06-12 22:41:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5011 states, 5010 states have (on average 3.396007984031936) internal successors, (17014), 5010 states have internal predecessors, (17014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:02,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5011 states to 5011 states and 17014 transitions. [2021-06-12 22:41:02,205 INFO L78 Accepts]: Start accepts. Automaton has 5011 states and 17014 transitions. Word has length 39 [2021-06-12 22:41:02,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:02,206 INFO L482 AbstractCegarLoop]: Abstraction has 5011 states and 17014 transitions. [2021-06-12 22:41:02,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:02,206 INFO L276 IsEmpty]: Start isEmpty. Operand 5011 states and 17014 transitions. [2021-06-12 22:41:02,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:02,211 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:02,211 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:02,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-06-12 22:41:02,211 INFO L430 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:02,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:02,211 INFO L82 PathProgramCache]: Analyzing trace with hash -248976344, now seen corresponding path program 286 times [2021-06-12 22:41:02,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:02,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838846216] [2021-06-12 22:41:02,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:02,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:02,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838846216] [2021-06-12 22:41:02,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838846216] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:02,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:02,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:02,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521899463] [2021-06-12 22:41:02,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:02,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:02,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:02,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:02,382 INFO L87 Difference]: Start difference. First operand 5011 states and 17014 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:05,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:05,306 INFO L93 Difference]: Finished difference Result 9529 states and 31445 transitions. [2021-06-12 22:41:05,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-06-12 22:41:05,306 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 [2021-06-12 22:41:05,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:05,320 INFO L225 Difference]: With dead ends: 9529 [2021-06-12 22:41:05,320 INFO L226 Difference]: Without dead ends: 9245 [2021-06-12 22:41:05,320 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2875 ImplicationChecksByTransitivity, 1742.9ms TimeCoverageRelationStatistics Valid=687, Invalid=8243, Unknown=0, NotChecked=0, Total=8930 [2021-06-12 22:41:05,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9245 states. [2021-06-12 22:41:05,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9245 to 5218. [2021-06-12 22:41:05,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5218 states, 5217 states have (on average 3.39850488786659) internal successors, (17730), 5217 states have internal predecessors, (17730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:05,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5218 states to 5218 states and 17730 transitions. [2021-06-12 22:41:05,408 INFO L78 Accepts]: Start accepts. Automaton has 5218 states and 17730 transitions. Word has length 39 [2021-06-12 22:41:05,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:05,408 INFO L482 AbstractCegarLoop]: Abstraction has 5218 states and 17730 transitions. [2021-06-12 22:41:05,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:05,408 INFO L276 IsEmpty]: Start isEmpty. Operand 5218 states and 17730 transitions. [2021-06-12 22:41:05,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:05,414 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:05,414 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:05,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-06-12 22:41:05,414 INFO L430 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:05,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:05,414 INFO L82 PathProgramCache]: Analyzing trace with hash 923675878, now seen corresponding path program 287 times [2021-06-12 22:41:05,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:05,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542911080] [2021-06-12 22:41:05,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:05,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:05,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542911080] [2021-06-12 22:41:05,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542911080] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:05,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:05,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:05,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478789395] [2021-06-12 22:41:05,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:05,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:05,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:05,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:05,586 INFO L87 Difference]: Start difference. First operand 5218 states and 17730 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:08,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:08,504 INFO L93 Difference]: Finished difference Result 9655 states and 31861 transitions. [2021-06-12 22:41:08,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-06-12 22:41:08,505 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:08,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:08,518 INFO L225 Difference]: With dead ends: 9655 [2021-06-12 22:41:08,518 INFO L226 Difference]: Without dead ends: 9493 [2021-06-12 22:41:08,519 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2733 ImplicationChecksByTransitivity, 1724.9ms TimeCoverageRelationStatistics Valid=669, Invalid=7887, Unknown=0, NotChecked=0, Total=8556 [2021-06-12 22:41:08,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9493 states. [2021-06-12 22:41:08,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9493 to 5231. [2021-06-12 22:41:08,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5231 states, 5230 states have (on average 3.397131931166348) internal successors, (17767), 5230 states have internal predecessors, (17767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:08,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5231 states to 5231 states and 17767 transitions. [2021-06-12 22:41:08,607 INFO L78 Accepts]: Start accepts. Automaton has 5231 states and 17767 transitions. Word has length 39 [2021-06-12 22:41:08,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:08,607 INFO L482 AbstractCegarLoop]: Abstraction has 5231 states and 17767 transitions. [2021-06-12 22:41:08,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:08,607 INFO L276 IsEmpty]: Start isEmpty. Operand 5231 states and 17767 transitions. [2021-06-12 22:41:08,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:08,612 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:08,612 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:08,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-06-12 22:41:08,613 INFO L430 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:08,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:08,613 INFO L82 PathProgramCache]: Analyzing trace with hash 855930998, now seen corresponding path program 288 times [2021-06-12 22:41:08,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:08,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000236150] [2021-06-12 22:41:08,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:08,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:08,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000236150] [2021-06-12 22:41:08,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000236150] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:08,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:08,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:08,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262263209] [2021-06-12 22:41:08,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:08,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:08,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:08,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:08,797 INFO L87 Difference]: Start difference. First operand 5231 states and 17767 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:11,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:11,701 INFO L93 Difference]: Finished difference Result 9373 states and 31060 transitions. [2021-06-12 22:41:11,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-06-12 22:41:11,702 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 [2021-06-12 22:41:11,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:11,715 INFO L225 Difference]: With dead ends: 9373 [2021-06-12 22:41:11,715 INFO L226 Difference]: Without dead ends: 9222 [2021-06-12 22:41:11,716 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2733 ImplicationChecksByTransitivity, 1744.9ms TimeCoverageRelationStatistics Valid=650, Invalid=7906, Unknown=0, NotChecked=0, Total=8556 [2021-06-12 22:41:11,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9222 states. [2021-06-12 22:41:11,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9222 to 5208. [2021-06-12 22:41:11,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5208 states, 5207 states have (on average 3.396773574034953) internal successors, (17687), 5207 states have internal predecessors, (17687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5208 states to 5208 states and 17687 transitions. [2021-06-12 22:41:11,802 INFO L78 Accepts]: Start accepts. Automaton has 5208 states and 17687 transitions. Word has length 39 [2021-06-12 22:41:11,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:11,802 INFO L482 AbstractCegarLoop]: Abstraction has 5208 states and 17687 transitions. [2021-06-12 22:41:11,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:11,802 INFO L276 IsEmpty]: Start isEmpty. Operand 5208 states and 17687 transitions. [2021-06-12 22:41:11,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:11,807 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:11,807 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:11,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-06-12 22:41:11,807 INFO L430 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:11,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:11,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1071710760, now seen corresponding path program 289 times [2021-06-12 22:41:11,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:11,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081990496] [2021-06-12 22:41:11,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:11,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:11,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081990496] [2021-06-12 22:41:11,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081990496] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:11,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:11,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:11,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427599513] [2021-06-12 22:41:11,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:11,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:11,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:11,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:11,979 INFO L87 Difference]: Start difference. First operand 5208 states and 17687 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:14,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:14,776 INFO L93 Difference]: Finished difference Result 9549 states and 31606 transitions. [2021-06-12 22:41:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-06-12 22:41:14,776 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:14,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:14,789 INFO L225 Difference]: With dead ends: 9549 [2021-06-12 22:41:14,789 INFO L226 Difference]: Without dead ends: 9409 [2021-06-12 22:41:14,790 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2595 ImplicationChecksByTransitivity, 1661.5ms TimeCoverageRelationStatistics Valid=633, Invalid=7557, Unknown=0, NotChecked=0, Total=8190 [2021-06-12 22:41:14,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9409 states. [2021-06-12 22:41:14,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9409 to 5159. [2021-06-12 22:41:14,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5159 states, 5158 states have (on average 3.3970531213648703) internal successors, (17522), 5158 states have internal predecessors, (17522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:14,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5159 states to 5159 states and 17522 transitions. [2021-06-12 22:41:14,873 INFO L78 Accepts]: Start accepts. Automaton has 5159 states and 17522 transitions. Word has length 39 [2021-06-12 22:41:14,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:14,873 INFO L482 AbstractCegarLoop]: Abstraction has 5159 states and 17522 transitions. [2021-06-12 22:41:14,874 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 5159 states and 17522 transitions. [2021-06-12 22:41:14,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:14,879 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:14,879 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:14,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-06-12 22:41:14,879 INFO L430 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:14,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:14,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1196290658, now seen corresponding path program 290 times [2021-06-12 22:41:14,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:14,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410728717] [2021-06-12 22:41:14,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:15,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:15,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410728717] [2021-06-12 22:41:15,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410728717] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:15,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:15,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:15,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402079807] [2021-06-12 22:41:15,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:15,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:15,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:15,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:15,050 INFO L87 Difference]: Start difference. First operand 5159 states and 17522 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:16,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:16,264 INFO L93 Difference]: Finished difference Result 5660 states and 19032 transitions. [2021-06-12 22:41:16,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:41:16,264 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:16,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:16,273 INFO L225 Difference]: With dead ends: 5660 [2021-06-12 22:41:16,273 INFO L226 Difference]: Without dead ends: 5593 [2021-06-12 22:41:16,273 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 735.9ms TimeCoverageRelationStatistics Valid=254, Invalid=2398, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:41:16,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5593 states. [2021-06-12 22:41:16,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5593 to 5171. [2021-06-12 22:41:16,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 3.3941972920696326) internal successors, (17548), 5170 states have internal predecessors, (17548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:16,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 17548 transitions. [2021-06-12 22:41:16,339 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 17548 transitions. Word has length 39 [2021-06-12 22:41:16,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:16,339 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 17548 transitions. [2021-06-12 22:41:16,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:16,339 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 17548 transitions. [2021-06-12 22:41:16,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:16,345 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:16,345 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:16,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-06-12 22:41:16,345 INFO L430 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:16,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:16,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1368433876, now seen corresponding path program 291 times [2021-06-12 22:41:16,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:16,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286785339] [2021-06-12 22:41:16,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:16,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:16,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286785339] [2021-06-12 22:41:16,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286785339] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:16,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:16,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:16,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180951054] [2021-06-12 22:41:16,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:16,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:16,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:16,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:16,517 INFO L87 Difference]: Start difference. First operand 5171 states and 17548 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:17,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:17,679 INFO L93 Difference]: Finished difference Result 5592 states and 18836 transitions. [2021-06-12 22:41:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:41:17,680 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 [2021-06-12 22:41:17,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:17,688 INFO L225 Difference]: With dead ends: 5592 [2021-06-12 22:41:17,688 INFO L226 Difference]: Without dead ends: 5529 [2021-06-12 22:41:17,688 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 740.4ms TimeCoverageRelationStatistics Valid=255, Invalid=2295, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:41:17,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2021-06-12 22:41:17,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 5163. [2021-06-12 22:41:17,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 3.395583107322743) internal successors, (17528), 5162 states have internal predecessors, (17528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 17528 transitions. [2021-06-12 22:41:17,752 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 17528 transitions. Word has length 39 [2021-06-12 22:41:17,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:17,752 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 17528 transitions. [2021-06-12 22:41:17,752 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:17,752 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 17528 transitions. [2021-06-12 22:41:17,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:17,757 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:17,757 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:17,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-06-12 22:41:17,757 INFO L430 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:17,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:17,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1890377420, now seen corresponding path program 292 times [2021-06-12 22:41:17,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:17,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823879123] [2021-06-12 22:41:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:17,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:17,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:17,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823879123] [2021-06-12 22:41:17,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823879123] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:17,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:17,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:17,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710637387] [2021-06-12 22:41:17,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:17,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:17,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:17,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:17,930 INFO L87 Difference]: Start difference. First operand 5163 states and 17528 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:19,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:19,635 INFO L93 Difference]: Finished difference Result 5838 states and 19469 transitions. [2021-06-12 22:41:19,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-12 22:41:19,635 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:19,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:19,644 INFO L225 Difference]: With dead ends: 5838 [2021-06-12 22:41:19,644 INFO L226 Difference]: Without dead ends: 5795 [2021-06-12 22:41:19,644 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 1105.6ms TimeCoverageRelationStatistics Valid=377, Invalid=3913, Unknown=0, NotChecked=0, Total=4290 [2021-06-12 22:41:19,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2021-06-12 22:41:19,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 5171. [2021-06-12 22:41:19,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 3.3941972920696326) internal successors, (17548), 5170 states have internal predecessors, (17548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:19,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 17548 transitions. [2021-06-12 22:41:19,715 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 17548 transitions. Word has length 39 [2021-06-12 22:41:19,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:19,715 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 17548 transitions. [2021-06-12 22:41:19,715 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:19,715 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 17548 transitions. [2021-06-12 22:41:19,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:19,720 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:19,720 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:19,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-06-12 22:41:19,720 INFO L430 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:19,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:19,721 INFO L82 PathProgramCache]: Analyzing trace with hash 109779118, now seen corresponding path program 293 times [2021-06-12 22:41:19,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:19,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705195163] [2021-06-12 22:41:19,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:19,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:19,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705195163] [2021-06-12 22:41:19,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705195163] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:19,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:19,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:19,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392161614] [2021-06-12 22:41:19,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:19,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:19,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:19,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:19,894 INFO L87 Difference]: Start difference. First operand 5171 states and 17548 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:21,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:21,551 INFO L93 Difference]: Finished difference Result 5794 states and 19351 transitions. [2021-06-12 22:41:21,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-12 22:41:21,551 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:21,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:21,560 INFO L225 Difference]: With dead ends: 5794 [2021-06-12 22:41:21,560 INFO L226 Difference]: Without dead ends: 5742 [2021-06-12 22:41:21,560 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 1092.5ms TimeCoverageRelationStatistics Valid=367, Invalid=3793, Unknown=0, NotChecked=0, Total=4160 [2021-06-12 22:41:21,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5742 states. [2021-06-12 22:41:21,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5742 to 5163. [2021-06-12 22:41:21,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 3.395583107322743) internal successors, (17528), 5162 states have internal predecessors, (17528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:21,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 17528 transitions. [2021-06-12 22:41:21,653 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 17528 transitions. Word has length 39 [2021-06-12 22:41:21,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:21,653 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 17528 transitions. [2021-06-12 22:41:21,653 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:21,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 17528 transitions. [2021-06-12 22:41:21,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:21,658 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:21,658 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:21,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-06-12 22:41:21,658 INFO L430 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:21,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:21,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1486106306, now seen corresponding path program 294 times [2021-06-12 22:41:21,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:21,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750957357] [2021-06-12 22:41:21,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:21,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:21,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750957357] [2021-06-12 22:41:21,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750957357] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:21,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:21,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:21,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024028206] [2021-06-12 22:41:21,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:21,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:21,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:21,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:21,841 INFO L87 Difference]: Start difference. First operand 5163 states and 17528 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:23,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:23,113 INFO L93 Difference]: Finished difference Result 5720 states and 19110 transitions. [2021-06-12 22:41:23,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-12 22:41:23,113 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 [2021-06-12 22:41:23,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:23,121 INFO L225 Difference]: With dead ends: 5720 [2021-06-12 22:41:23,121 INFO L226 Difference]: Without dead ends: 5665 [2021-06-12 22:41:23,122 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 825.6ms TimeCoverageRelationStatistics Valid=289, Invalid=2573, Unknown=0, NotChecked=0, Total=2862 [2021-06-12 22:41:23,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2021-06-12 22:41:23,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 5165. [2021-06-12 22:41:23,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 3.3948489542989932) internal successors, (17531), 5164 states have internal predecessors, (17531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 17531 transitions. [2021-06-12 22:41:23,205 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 17531 transitions. Word has length 39 [2021-06-12 22:41:23,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:23,205 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 17531 transitions. [2021-06-12 22:41:23,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:23,205 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 17531 transitions. [2021-06-12 22:41:23,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:23,210 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:23,210 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:23,210 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-06-12 22:41:23,210 INFO L430 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:23,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:23,211 INFO L82 PathProgramCache]: Analyzing trace with hash -313454084, now seen corresponding path program 295 times [2021-06-12 22:41:23,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:23,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753175878] [2021-06-12 22:41:23,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:23,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:23,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:23,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753175878] [2021-06-12 22:41:23,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753175878] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:23,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:23,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:23,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362591890] [2021-06-12 22:41:23,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:23,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:23,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:23,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:23,380 INFO L87 Difference]: Start difference. First operand 5165 states and 17531 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:24,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:24,511 INFO L93 Difference]: Finished difference Result 5655 states and 18958 transitions. [2021-06-12 22:41:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:41:24,511 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 [2021-06-12 22:41:24,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:24,519 INFO L225 Difference]: With dead ends: 5655 [2021-06-12 22:41:24,520 INFO L226 Difference]: Without dead ends: 5609 [2021-06-12 22:41:24,520 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 718.7ms TimeCoverageRelationStatistics Valid=260, Invalid=2290, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:41:24,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5609 states. [2021-06-12 22:41:24,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5609 to 5169. [2021-06-12 22:41:24,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 3.393769349845201) internal successors, (17539), 5168 states have internal predecessors, (17539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:24,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 17539 transitions. [2021-06-12 22:41:24,613 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 17539 transitions. Word has length 39 [2021-06-12 22:41:24,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:24,613 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 17539 transitions. [2021-06-12 22:41:24,613 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) [2021-06-12 22:41:24,613 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 17539 transitions. [2021-06-12 22:41:24,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:24,619 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:24,619 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:24,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-06-12 22:41:24,619 INFO L430 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:24,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:24,619 INFO L82 PathProgramCache]: Analyzing trace with hash -560920246, now seen corresponding path program 296 times [2021-06-12 22:41:24,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:24,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804485008] [2021-06-12 22:41:24,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:24,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:24,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:24,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804485008] [2021-06-12 22:41:24,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804485008] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:24,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:24,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:24,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484363688] [2021-06-12 22:41:24,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:24,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:24,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:24,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:24,790 INFO L87 Difference]: Start difference. First operand 5169 states and 17539 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:26,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:26,006 INFO L93 Difference]: Finished difference Result 5619 states and 18879 transitions. [2021-06-12 22:41:26,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-12 22:41:26,007 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:26,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:26,016 INFO L225 Difference]: With dead ends: 5619 [2021-06-12 22:41:26,016 INFO L226 Difference]: Without dead ends: 5570 [2021-06-12 22:41:26,016 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 799.3ms TimeCoverageRelationStatistics Valid=273, Invalid=2379, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:41:26,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states. [2021-06-12 22:41:26,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 5159. [2021-06-12 22:41:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5159 states, 5158 states have (on average 3.3962776269872044) internal successors, (17518), 5158 states have internal predecessors, (17518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:26,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5159 states to 5159 states and 17518 transitions. [2021-06-12 22:41:26,102 INFO L78 Accepts]: Start accepts. Automaton has 5159 states and 17518 transitions. Word has length 39 [2021-06-12 22:41:26,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:26,102 INFO L482 AbstractCegarLoop]: Abstraction has 5159 states and 17518 transitions. [2021-06-12 22:41:26,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:26,102 INFO L276 IsEmpty]: Start isEmpty. Operand 5159 states and 17518 transitions. [2021-06-12 22:41:26,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:26,108 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:26,108 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:26,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-06-12 22:41:26,108 INFO L430 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:26,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:26,108 INFO L82 PathProgramCache]: Analyzing trace with hash -2082138774, now seen corresponding path program 297 times [2021-06-12 22:41:26,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:26,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199101652] [2021-06-12 22:41:26,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:26,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:26,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199101652] [2021-06-12 22:41:26,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199101652] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:26,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:26,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:26,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090521105] [2021-06-12 22:41:26,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:26,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:26,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:26,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:26,281 INFO L87 Difference]: Start difference. First operand 5159 states and 17518 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:27,482 INFO L93 Difference]: Finished difference Result 5632 states and 18972 transitions. [2021-06-12 22:41:27,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-12 22:41:27,483 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:27,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:27,491 INFO L225 Difference]: With dead ends: 5632 [2021-06-12 22:41:27,492 INFO L226 Difference]: Without dead ends: 5565 [2021-06-12 22:41:27,492 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 692.9ms TimeCoverageRelationStatistics Valid=218, Invalid=2134, Unknown=0, NotChecked=0, Total=2352 [2021-06-12 22:41:27,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2021-06-12 22:41:27,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 5215. [2021-06-12 22:41:27,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 3.3908707326428846) internal successors, (17680), 5214 states have internal predecessors, (17680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:27,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 17680 transitions. [2021-06-12 22:41:27,600 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 17680 transitions. Word has length 39 [2021-06-12 22:41:27,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:27,600 INFO L482 AbstractCegarLoop]: Abstraction has 5215 states and 17680 transitions. [2021-06-12 22:41:27,600 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:27,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 17680 transitions. [2021-06-12 22:41:27,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:27,606 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:27,606 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:27,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-06-12 22:41:27,606 INFO L430 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:27,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:27,606 INFO L82 PathProgramCache]: Analyzing trace with hash 2040685304, now seen corresponding path program 298 times [2021-06-12 22:41:27,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:27,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602753797] [2021-06-12 22:41:27,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:27,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:27,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602753797] [2021-06-12 22:41:27,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602753797] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:27,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:27,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:27,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335570432] [2021-06-12 22:41:27,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:27,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:27,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:27,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:27,778 INFO L87 Difference]: Start difference. First operand 5215 states and 17680 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:28,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:28,912 INFO L93 Difference]: Finished difference Result 5628 states and 18956 transitions. [2021-06-12 22:41:28,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:41:28,912 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:28,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:28,922 INFO L225 Difference]: With dead ends: 5628 [2021-06-12 22:41:28,922 INFO L226 Difference]: Without dead ends: 5565 [2021-06-12 22:41:28,922 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 677.2ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:41:28,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2021-06-12 22:41:28,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 5247. [2021-06-12 22:41:28,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 5246 states have (on average 3.3861990087685854) internal successors, (17764), 5246 states have internal predecessors, (17764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:29,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 17764 transitions. [2021-06-12 22:41:29,029 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 17764 transitions. Word has length 39 [2021-06-12 22:41:29,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:29,029 INFO L482 AbstractCegarLoop]: Abstraction has 5247 states and 17764 transitions. [2021-06-12 22:41:29,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:29,029 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 17764 transitions. [2021-06-12 22:41:29,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:29,036 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:29,036 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:29,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-06-12 22:41:29,036 INFO L430 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:29,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:29,036 INFO L82 PathProgramCache]: Analyzing trace with hash 237851148, now seen corresponding path program 299 times [2021-06-12 22:41:29,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:29,036 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645967858] [2021-06-12 22:41:29,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:29,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:29,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:29,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645967858] [2021-06-12 22:41:29,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645967858] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:29,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:29,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:29,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630039796] [2021-06-12 22:41:29,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:29,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:29,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:29,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:29,210 INFO L87 Difference]: Start difference. First operand 5247 states and 17764 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:30,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:30,362 INFO L93 Difference]: Finished difference Result 5652 states and 19016 transitions. [2021-06-12 22:41:30,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:41:30,362 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:30,371 INFO L225 Difference]: With dead ends: 5652 [2021-06-12 22:41:30,371 INFO L226 Difference]: Without dead ends: 5529 [2021-06-12 22:41:30,371 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 690.3ms TimeCoverageRelationStatistics Valid=230, Invalid=2122, Unknown=0, NotChecked=0, Total=2352 [2021-06-12 22:41:30,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2021-06-12 22:41:30,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 5199. [2021-06-12 22:41:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 3.391689111196614) internal successors, (17630), 5198 states have internal predecessors, (17630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:30,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 17630 transitions. [2021-06-12 22:41:30,436 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 17630 transitions. Word has length 39 [2021-06-12 22:41:30,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:30,436 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 17630 transitions. [2021-06-12 22:41:30,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:30,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 17630 transitions. [2021-06-12 22:41:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:30,441 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:30,441 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:30,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-06-12 22:41:30,441 INFO L430 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:30,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:30,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1669411402, now seen corresponding path program 300 times [2021-06-12 22:41:30,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:30,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609534999] [2021-06-12 22:41:30,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:30,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:30,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:30,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609534999] [2021-06-12 22:41:30,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609534999] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:30,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:30,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:30,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787026668] [2021-06-12 22:41:30,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:30,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:30,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:30,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:30,643 INFO L87 Difference]: Start difference. First operand 5199 states and 17630 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:32,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:32,881 INFO L93 Difference]: Finished difference Result 8272 states and 27771 transitions. [2021-06-12 22:41:32,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-12 22:41:32,881 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 [2021-06-12 22:41:32,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:32,893 INFO L225 Difference]: With dead ends: 8272 [2021-06-12 22:41:32,893 INFO L226 Difference]: Without dead ends: 8166 [2021-06-12 22:41:32,894 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 1347.2ms TimeCoverageRelationStatistics Valid=466, Invalid=5234, Unknown=0, NotChecked=0, Total=5700 [2021-06-12 22:41:32,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8166 states. [2021-06-12 22:41:32,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8166 to 5264. [2021-06-12 22:41:32,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5264 states, 5263 states have (on average 3.3878016340490213) internal successors, (17830), 5263 states have internal predecessors, (17830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:32,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 17830 transitions. [2021-06-12 22:41:32,974 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 17830 transitions. Word has length 39 [2021-06-12 22:41:32,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:32,974 INFO L482 AbstractCegarLoop]: Abstraction has 5264 states and 17830 transitions. [2021-06-12 22:41:32,974 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:32,974 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 17830 transitions. [2021-06-12 22:41:32,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:32,979 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:32,979 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:32,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-06-12 22:41:32,980 INFO L430 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:32,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:32,980 INFO L82 PathProgramCache]: Analyzing trace with hash -111186900, now seen corresponding path program 301 times [2021-06-12 22:41:32,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:32,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061080099] [2021-06-12 22:41:32,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:33,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:33,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:33,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061080099] [2021-06-12 22:41:33,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061080099] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:33,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:33,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:33,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767558680] [2021-06-12 22:41:33,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:33,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:33,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:33,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:33,151 INFO L87 Difference]: Start difference. First operand 5264 states and 17830 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:35,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:35,654 INFO L93 Difference]: Finished difference Result 9058 states and 30537 transitions. [2021-06-12 22:41:35,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-06-12 22:41:35,654 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:35,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:35,667 INFO L225 Difference]: With dead ends: 9058 [2021-06-12 22:41:35,668 INFO L226 Difference]: Without dead ends: 9006 [2021-06-12 22:41:35,668 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 1456.6ms TimeCoverageRelationStatistics Valid=521, Invalid=6451, Unknown=0, NotChecked=0, Total=6972 [2021-06-12 22:41:35,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9006 states. [2021-06-12 22:41:35,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9006 to 5234. [2021-06-12 22:41:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 3.3890693674756354) internal successors, (17735), 5233 states have internal predecessors, (17735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:35,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 17735 transitions. [2021-06-12 22:41:35,755 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 17735 transitions. Word has length 39 [2021-06-12 22:41:35,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:35,755 INFO L482 AbstractCegarLoop]: Abstraction has 5234 states and 17735 transitions. [2021-06-12 22:41:35,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:35,755 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 17735 transitions. [2021-06-12 22:41:35,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:35,760 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:35,760 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:35,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-06-12 22:41:35,760 INFO L430 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:35,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:35,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1707072324, now seen corresponding path program 302 times [2021-06-12 22:41:35,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:35,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751749890] [2021-06-12 22:41:35,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:35,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:35,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751749890] [2021-06-12 22:41:35,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751749890] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:35,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:35,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:35,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978166482] [2021-06-12 22:41:35,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:35,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:35,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:35,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:35,959 INFO L87 Difference]: Start difference. First operand 5234 states and 17735 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:37,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:37,501 INFO L93 Difference]: Finished difference Result 7577 states and 25347 transitions. [2021-06-12 22:41:37,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-12 22:41:37,502 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:37,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:37,514 INFO L225 Difference]: With dead ends: 7577 [2021-06-12 22:41:37,514 INFO L226 Difference]: Without dead ends: 7522 [2021-06-12 22:41:37,514 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 889.8ms TimeCoverageRelationStatistics Valid=319, Invalid=2987, Unknown=0, NotChecked=0, Total=3306 [2021-06-12 22:41:37,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7522 states. [2021-06-12 22:41:37,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7522 to 5268. [2021-06-12 22:41:37,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5268 states, 5267 states have (on average 3.3892158724131383) internal successors, (17851), 5267 states have internal predecessors, (17851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:37,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5268 states to 5268 states and 17851 transitions. [2021-06-12 22:41:37,601 INFO L78 Accepts]: Start accepts. Automaton has 5268 states and 17851 transitions. Word has length 39 [2021-06-12 22:41:37,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:37,601 INFO L482 AbstractCegarLoop]: Abstraction has 5268 states and 17851 transitions. [2021-06-12 22:41:37,601 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) [2021-06-12 22:41:37,601 INFO L276 IsEmpty]: Start isEmpty. Operand 5268 states and 17851 transitions. [2021-06-12 22:41:37,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:37,607 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:37,607 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:37,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-06-12 22:41:37,607 INFO L430 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:37,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:37,607 INFO L82 PathProgramCache]: Analyzing trace with hash -534420102, now seen corresponding path program 303 times [2021-06-12 22:41:37,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:37,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742291052] [2021-06-12 22:41:37,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:37,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:37,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742291052] [2021-06-12 22:41:37,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742291052] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:37,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:37,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:37,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908184873] [2021-06-12 22:41:37,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:37,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:37,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:37,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:37,809 INFO L87 Difference]: Start difference. First operand 5268 states and 17851 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:39,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:39,624 INFO L93 Difference]: Finished difference Result 8290 states and 27819 transitions. [2021-06-12 22:41:39,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-12 22:41:39,624 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:39,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:39,636 INFO L225 Difference]: With dead ends: 8290 [2021-06-12 22:41:39,636 INFO L226 Difference]: Without dead ends: 8230 [2021-06-12 22:41:39,637 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 1016.3ms TimeCoverageRelationStatistics Valid=353, Invalid=3679, Unknown=0, NotChecked=0, Total=4032 [2021-06-12 22:41:39,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8230 states. [2021-06-12 22:41:39,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8230 to 5266. [2021-06-12 22:41:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5266 states, 5265 states have (on average 3.389553656220323) internal successors, (17846), 5265 states have internal predecessors, (17846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:39,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5266 states to 5266 states and 17846 transitions. [2021-06-12 22:41:39,734 INFO L78 Accepts]: Start accepts. Automaton has 5266 states and 17846 transitions. Word has length 39 [2021-06-12 22:41:39,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:39,734 INFO L482 AbstractCegarLoop]: Abstraction has 5266 states and 17846 transitions. [2021-06-12 22:41:39,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:39,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5266 states and 17846 transitions. [2021-06-12 22:41:39,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:39,739 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:39,739 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:39,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-06-12 22:41:39,739 INFO L430 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:39,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:39,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1883143592, now seen corresponding path program 304 times [2021-06-12 22:41:39,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:39,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576014321] [2021-06-12 22:41:39,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:39,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:39,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576014321] [2021-06-12 22:41:39,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576014321] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:39,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:39,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:39,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938222727] [2021-06-12 22:41:39,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:39,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:39,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:39,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:39,913 INFO L87 Difference]: Start difference. First operand 5266 states and 17846 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:41,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:41,404 INFO L93 Difference]: Finished difference Result 7546 states and 25301 transitions. [2021-06-12 22:41:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-12 22:41:41,404 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:41,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:41,416 INFO L225 Difference]: With dead ends: 7546 [2021-06-12 22:41:41,416 INFO L226 Difference]: Without dead ends: 7455 [2021-06-12 22:41:41,416 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 835.5ms TimeCoverageRelationStatistics Valid=300, Invalid=2892, Unknown=0, NotChecked=0, Total=3192 [2021-06-12 22:41:41,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7455 states. [2021-06-12 22:41:41,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7455 to 5266. [2021-06-12 22:41:41,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5266 states, 5265 states have (on average 3.388414055080722) internal successors, (17840), 5265 states have internal predecessors, (17840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:41,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5266 states to 5266 states and 17840 transitions. [2021-06-12 22:41:41,515 INFO L78 Accepts]: Start accepts. Automaton has 5266 states and 17840 transitions. Word has length 39 [2021-06-12 22:41:41,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:41,515 INFO L482 AbstractCegarLoop]: Abstraction has 5266 states and 17840 transitions. [2021-06-12 22:41:41,515 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:41,515 INFO L276 IsEmpty]: Start isEmpty. Operand 5266 states and 17840 transitions. [2021-06-12 22:41:41,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:41,520 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:41,521 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:41,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-06-12 22:41:41,521 INFO L430 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:41,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:41,521 INFO L82 PathProgramCache]: Analyzing trace with hash 380661386, now seen corresponding path program 305 times [2021-06-12 22:41:41,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:41,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018399782] [2021-06-12 22:41:41,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:41,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:41,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018399782] [2021-06-12 22:41:41,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018399782] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:41,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:41,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:41,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976394817] [2021-06-12 22:41:41,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:41,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:41,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:41,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:41,698 INFO L87 Difference]: Start difference. First operand 5266 states and 17840 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:43,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:43,570 INFO L93 Difference]: Finished difference Result 8379 states and 28143 transitions. [2021-06-12 22:41:43,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-12 22:41:43,570 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:43,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:43,582 INFO L225 Difference]: With dead ends: 8379 [2021-06-12 22:41:43,582 INFO L226 Difference]: Without dead ends: 8263 [2021-06-12 22:41:43,582 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 994.6ms TimeCoverageRelationStatistics Valid=338, Invalid=3694, Unknown=0, NotChecked=0, Total=4032 [2021-06-12 22:41:43,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8263 states. [2021-06-12 22:41:43,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8263 to 5228. [2021-06-12 22:41:43,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5228 states, 5227 states have (on average 3.3906638607231683) internal successors, (17723), 5227 states have internal predecessors, (17723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:43,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 17723 transitions. [2021-06-12 22:41:43,660 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 17723 transitions. Word has length 39 [2021-06-12 22:41:43,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:43,660 INFO L482 AbstractCegarLoop]: Abstraction has 5228 states and 17723 transitions. [2021-06-12 22:41:43,660 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) [2021-06-12 22:41:43,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 17723 transitions. [2021-06-12 22:41:43,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:43,666 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:43,666 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:43,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-06-12 22:41:43,666 INFO L430 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:43,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:43,666 INFO L82 PathProgramCache]: Analyzing trace with hash 910822304, now seen corresponding path program 306 times [2021-06-12 22:41:43,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:43,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413466374] [2021-06-12 22:41:43,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:43,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:43,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:43,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413466374] [2021-06-12 22:41:43,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413466374] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:43,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:43,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:43,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551861328] [2021-06-12 22:41:43,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:43,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:43,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:43,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:43,839 INFO L87 Difference]: Start difference. First operand 5228 states and 17723 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:45,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:45,187 INFO L93 Difference]: Finished difference Result 5722 states and 19189 transitions. [2021-06-12 22:41:45,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-12 22:41:45,188 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:45,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:45,215 INFO L225 Difference]: With dead ends: 5722 [2021-06-12 22:41:45,216 INFO L226 Difference]: Without dead ends: 5655 [2021-06-12 22:41:45,216 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 884.1ms TimeCoverageRelationStatistics Valid=298, Invalid=2894, Unknown=0, NotChecked=0, Total=3192 [2021-06-12 22:41:45,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5655 states. [2021-06-12 22:41:45,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5655 to 5254. [2021-06-12 22:41:45,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5254 states, 5253 states have (on average 3.3902531886541025) internal successors, (17809), 5253 states have internal predecessors, (17809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:45,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 17809 transitions. [2021-06-12 22:41:45,280 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 17809 transitions. Word has length 39 [2021-06-12 22:41:45,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:45,280 INFO L482 AbstractCegarLoop]: Abstraction has 5254 states and 17809 transitions. [2021-06-12 22:41:45,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:45,280 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 17809 transitions. [2021-06-12 22:41:45,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:45,286 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:45,286 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:45,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-06-12 22:41:45,286 INFO L430 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:45,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:45,286 INFO L82 PathProgramCache]: Analyzing trace with hash 738679086, now seen corresponding path program 307 times [2021-06-12 22:41:45,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:45,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857025003] [2021-06-12 22:41:45,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:45,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:45,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:45,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857025003] [2021-06-12 22:41:45,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857025003] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:45,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:45,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:45,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115544767] [2021-06-12 22:41:45,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:45,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:45,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:45,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:45,456 INFO L87 Difference]: Start difference. First operand 5254 states and 17809 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:46,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:46,676 INFO L93 Difference]: Finished difference Result 5654 states and 18989 transitions. [2021-06-12 22:41:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:41:46,676 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:46,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:46,685 INFO L225 Difference]: With dead ends: 5654 [2021-06-12 22:41:46,685 INFO L226 Difference]: Without dead ends: 5591 [2021-06-12 22:41:46,685 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 822.1ms TimeCoverageRelationStatistics Valid=284, Invalid=2578, Unknown=0, NotChecked=0, Total=2862 [2021-06-12 22:41:46,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5591 states. [2021-06-12 22:41:46,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5591 to 5254. [2021-06-12 22:41:46,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5254 states, 5253 states have (on average 3.389491719017704) internal successors, (17805), 5253 states have internal predecessors, (17805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:46,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 17805 transitions. [2021-06-12 22:41:46,750 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 17805 transitions. Word has length 39 [2021-06-12 22:41:46,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:46,750 INFO L482 AbstractCegarLoop]: Abstraction has 5254 states and 17805 transitions. [2021-06-12 22:41:46,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:46,750 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 17805 transitions. [2021-06-12 22:41:46,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:46,755 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:46,755 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:46,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-06-12 22:41:46,756 INFO L430 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:46,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:46,756 INFO L82 PathProgramCache]: Analyzing trace with hash -297476914, now seen corresponding path program 308 times [2021-06-12 22:41:46,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:46,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065536379] [2021-06-12 22:41:46,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:46,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:46,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065536379] [2021-06-12 22:41:46,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065536379] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:46,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:46,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:46,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635311252] [2021-06-12 22:41:46,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:46,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:46,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:46,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:46,951 INFO L87 Difference]: Start difference. First operand 5254 states and 17805 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:48,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:48,816 INFO L93 Difference]: Finished difference Result 5867 states and 19517 transitions. [2021-06-12 22:41:48,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-12 22:41:48,817 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 [2021-06-12 22:41:48,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:48,842 INFO L225 Difference]: With dead ends: 5867 [2021-06-12 22:41:48,842 INFO L226 Difference]: Without dead ends: 5824 [2021-06-12 22:41:48,842 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 1311.8ms TimeCoverageRelationStatistics Valid=439, Invalid=4673, Unknown=0, NotChecked=0, Total=5112 [2021-06-12 22:41:48,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2021-06-12 22:41:48,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 5266. [2021-06-12 22:41:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5266 states, 5265 states have (on average 3.3886039886039887) internal successors, (17841), 5265 states have internal predecessors, (17841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:48,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5266 states to 5266 states and 17841 transitions. [2021-06-12 22:41:48,913 INFO L78 Accepts]: Start accepts. Automaton has 5266 states and 17841 transitions. Word has length 39 [2021-06-12 22:41:48,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:48,913 INFO L482 AbstractCegarLoop]: Abstraction has 5266 states and 17841 transitions. [2021-06-12 22:41:48,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:48,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5266 states and 17841 transitions. [2021-06-12 22:41:48,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:48,919 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:48,919 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:48,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-06-12 22:41:48,919 INFO L430 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:48,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:48,919 INFO L82 PathProgramCache]: Analyzing trace with hash -2078075216, now seen corresponding path program 309 times [2021-06-12 22:41:48,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:48,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035229342] [2021-06-12 22:41:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:49,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:49,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035229342] [2021-06-12 22:41:49,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035229342] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:49,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:49,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:49,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338297518] [2021-06-12 22:41:49,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:49,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:49,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:49,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:49,095 INFO L87 Difference]: Start difference. First operand 5266 states and 17841 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:50,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:50,963 INFO L93 Difference]: Finished difference Result 5847 states and 19459 transitions. [2021-06-12 22:41:50,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-12 22:41:50,963 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:50,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:50,972 INFO L225 Difference]: With dead ends: 5847 [2021-06-12 22:41:50,972 INFO L226 Difference]: Without dead ends: 5795 [2021-06-12 22:41:50,972 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 1305.9ms TimeCoverageRelationStatistics Valid=427, Invalid=4543, Unknown=0, NotChecked=0, Total=4970 [2021-06-12 22:41:50,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2021-06-12 22:41:51,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 5258. [2021-06-12 22:41:51,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5258 states, 5257 states have (on average 3.389956248811109) internal successors, (17821), 5257 states have internal predecessors, (17821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5258 states to 5258 states and 17821 transitions. [2021-06-12 22:41:51,042 INFO L78 Accepts]: Start accepts. Automaton has 5258 states and 17821 transitions. Word has length 39 [2021-06-12 22:41:51,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:51,042 INFO L482 AbstractCegarLoop]: Abstraction has 5258 states and 17821 transitions. [2021-06-12 22:41:51,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:51,043 INFO L276 IsEmpty]: Start isEmpty. Operand 5258 states and 17821 transitions. [2021-06-12 22:41:51,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:51,049 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:51,049 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:51,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-06-12 22:41:51,049 INFO L430 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:51,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:51,049 INFO L82 PathProgramCache]: Analyzing trace with hash 621006656, now seen corresponding path program 310 times [2021-06-12 22:41:51,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:51,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181085266] [2021-06-12 22:41:51,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:51,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:51,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:51,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181085266] [2021-06-12 22:41:51,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181085266] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:51,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:51,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:51,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182446782] [2021-06-12 22:41:51,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:51,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:51,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:51,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:51,224 INFO L87 Difference]: Start difference. First operand 5258 states and 17821 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:52,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:52,582 INFO L93 Difference]: Finished difference Result 5783 states and 19267 transitions. [2021-06-12 22:41:52,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-12 22:41:52,583 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:52,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:52,612 INFO L225 Difference]: With dead ends: 5783 [2021-06-12 22:41:52,612 INFO L226 Difference]: Without dead ends: 5728 [2021-06-12 22:41:52,612 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 921.9ms TimeCoverageRelationStatistics Valid=318, Invalid=2874, Unknown=0, NotChecked=0, Total=3192 [2021-06-12 22:41:52,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5728 states. [2021-06-12 22:41:52,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5728 to 5260. [2021-06-12 22:41:52,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5259 states have (on average 3.3892374976231223) internal successors, (17824), 5259 states have internal predecessors, (17824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 17824 transitions. [2021-06-12 22:41:52,678 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 17824 transitions. Word has length 39 [2021-06-12 22:41:52,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:52,678 INFO L482 AbstractCegarLoop]: Abstraction has 5260 states and 17824 transitions. [2021-06-12 22:41:52,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:52,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 17824 transitions. [2021-06-12 22:41:52,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:52,684 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:52,684 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:52,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-06-12 22:41:52,684 INFO L430 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:52,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:52,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1793658878, now seen corresponding path program 311 times [2021-06-12 22:41:52,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:52,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628374792] [2021-06-12 22:41:52,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:52,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:52,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:52,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628374792] [2021-06-12 22:41:52,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628374792] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:52,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:52,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:52,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633322259] [2021-06-12 22:41:52,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:52,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:52,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:52,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:52,857 INFO L87 Difference]: Start difference. First operand 5260 states and 17824 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:54,100 INFO L93 Difference]: Finished difference Result 5718 states and 19115 transitions. [2021-06-12 22:41:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:41:54,100 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:54,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:54,109 INFO L225 Difference]: With dead ends: 5718 [2021-06-12 22:41:54,109 INFO L226 Difference]: Without dead ends: 5672 [2021-06-12 22:41:54,109 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 841.8ms TimeCoverageRelationStatistics Valid=286, Invalid=2576, Unknown=0, NotChecked=0, Total=2862 [2021-06-12 22:41:54,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-06-12 22:41:54,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 5264. [2021-06-12 22:41:54,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5264 states, 5263 states have (on average 3.3881816454493636) internal successors, (17832), 5263 states have internal predecessors, (17832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 17832 transitions. [2021-06-12 22:41:54,177 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 17832 transitions. Word has length 39 [2021-06-12 22:41:54,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:54,177 INFO L482 AbstractCegarLoop]: Abstraction has 5264 states and 17832 transitions. [2021-06-12 22:41:54,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:54,177 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 17832 transitions. [2021-06-12 22:41:54,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:54,182 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:54,182 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:54,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-06-12 22:41:54,183 INFO L430 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:54,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:54,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1546192716, now seen corresponding path program 312 times [2021-06-12 22:41:54,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:54,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486068317] [2021-06-12 22:41:54,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:54,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:54,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486068317] [2021-06-12 22:41:54,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486068317] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:54,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:54,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:54,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855207657] [2021-06-12 22:41:54,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:54,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:54,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:54,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:54,379 INFO L87 Difference]: Start difference. First operand 5264 states and 17832 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:55,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:55,661 INFO L93 Difference]: Finished difference Result 5682 states and 19036 transitions. [2021-06-12 22:41:55,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-12 22:41:55,661 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 [2021-06-12 22:41:55,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:55,670 INFO L225 Difference]: With dead ends: 5682 [2021-06-12 22:41:55,670 INFO L226 Difference]: Without dead ends: 5633 [2021-06-12 22:41:55,670 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 880.6ms TimeCoverageRelationStatistics Valid=299, Invalid=2671, Unknown=0, NotChecked=0, Total=2970 [2021-06-12 22:41:55,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5633 states. [2021-06-12 22:41:55,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5633 to 5254. [2021-06-12 22:41:55,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5254 states, 5253 states have (on average 3.3910146582905005) internal successors, (17813), 5253 states have internal predecessors, (17813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 17813 transitions. [2021-06-12 22:41:55,737 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 17813 transitions. Word has length 39 [2021-06-12 22:41:55,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:55,737 INFO L482 AbstractCegarLoop]: Abstraction has 5254 states and 17813 transitions. [2021-06-12 22:41:55,737 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) [2021-06-12 22:41:55,737 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 17813 transitions. [2021-06-12 22:41:55,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:55,743 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:55,743 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:55,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-06-12 22:41:55,743 INFO L430 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:55,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:55,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1869855854, now seen corresponding path program 313 times [2021-06-12 22:41:55,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:55,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544853387] [2021-06-12 22:41:55,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:55,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:55,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544853387] [2021-06-12 22:41:55,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544853387] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:55,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:55,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:55,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059240055] [2021-06-12 22:41:55,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:55,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:55,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:55,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:55,916 INFO L87 Difference]: Start difference. First operand 5254 states and 17813 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:57,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:57,260 INFO L93 Difference]: Finished difference Result 5671 states and 19049 transitions. [2021-06-12 22:41:57,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:41:57,260 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:41:57,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:57,268 INFO L225 Difference]: With dead ends: 5671 [2021-06-12 22:41:57,269 INFO L226 Difference]: Without dead ends: 5604 [2021-06-12 22:41:57,269 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 833.8ms TimeCoverageRelationStatistics Valid=272, Invalid=2698, Unknown=0, NotChecked=0, Total=2970 [2021-06-12 22:41:57,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5604 states. [2021-06-12 22:41:57,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5604 to 5272. [2021-06-12 22:41:57,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5272 states, 5271 states have (on average 3.3874027698728892) internal successors, (17855), 5271 states have internal predecessors, (17855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5272 states to 5272 states and 17855 transitions. [2021-06-12 22:41:57,335 INFO L78 Accepts]: Start accepts. Automaton has 5272 states and 17855 transitions. Word has length 39 [2021-06-12 22:41:57,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:57,335 INFO L482 AbstractCegarLoop]: Abstraction has 5272 states and 17855 transitions. [2021-06-12 22:41:57,336 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) [2021-06-12 22:41:57,336 INFO L276 IsEmpty]: Start isEmpty. Operand 5272 states and 17855 transitions. [2021-06-12 22:41:57,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:57,341 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:57,341 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:57,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-06-12 22:41:57,341 INFO L430 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:57,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:57,342 INFO L82 PathProgramCache]: Analyzing trace with hash 897997900, now seen corresponding path program 314 times [2021-06-12 22:41:57,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:57,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369165963] [2021-06-12 22:41:57,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:57,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:57,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369165963] [2021-06-12 22:41:57,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369165963] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:57,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:57,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:57,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945302832] [2021-06-12 22:41:57,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:57,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:57,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:57,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:57,522 INFO L87 Difference]: Start difference. First operand 5272 states and 17855 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:58,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:41:58,719 INFO L93 Difference]: Finished difference Result 5650 states and 18952 transitions. [2021-06-12 22:41:58,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:41:58,719 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 [2021-06-12 22:41:58,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:41:58,727 INFO L225 Difference]: With dead ends: 5650 [2021-06-12 22:41:58,728 INFO L226 Difference]: Without dead ends: 5607 [2021-06-12 22:41:58,728 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 769.8ms TimeCoverageRelationStatistics Valid=245, Invalid=2305, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:41:58,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5607 states. [2021-06-12 22:41:58,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5607 to 5290. [2021-06-12 22:41:58,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 5289 states have (on average 3.383248251087162) internal successors, (17894), 5289 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) [2021-06-12 22:41:58,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 17894 transitions. [2021-06-12 22:41:58,795 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 17894 transitions. Word has length 39 [2021-06-12 22:41:58,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:41:58,795 INFO L482 AbstractCegarLoop]: Abstraction has 5290 states and 17894 transitions. [2021-06-12 22:41:58,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:41:58,795 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 17894 transitions. [2021-06-12 22:41:58,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:41:58,801 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:41:58,801 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:41:58,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-06-12 22:41:58,801 INFO L430 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:41:58,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:41:58,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1727529070, now seen corresponding path program 315 times [2021-06-12 22:41:58,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:41:58,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814781098] [2021-06-12 22:41:58,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:41:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:41:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:41:58,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:41:58,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814781098] [2021-06-12 22:41:58,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814781098] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:41:58,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:41:58,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:41:58,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125724055] [2021-06-12 22:41:58,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:41:58,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:41:58,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:41:58,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:41:58,993 INFO L87 Difference]: Start difference. First operand 5290 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) [2021-06-12 22:42:00,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:00,196 INFO L93 Difference]: Finished difference Result 5599 states and 18829 transitions. [2021-06-12 22:42:00,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:42:00,197 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:00,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:00,205 INFO L225 Difference]: With dead ends: 5599 [2021-06-12 22:42:00,205 INFO L226 Difference]: Without dead ends: 5536 [2021-06-12 22:42:00,205 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 780.8ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:42:00,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5536 states. [2021-06-12 22:42:00,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5536 to 5272. [2021-06-12 22:42:00,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5272 states, 5271 states have (on average 3.386264465945741) internal successors, (17849), 5271 states have internal predecessors, (17849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5272 states to 5272 states and 17849 transitions. [2021-06-12 22:42:00,269 INFO L78 Accepts]: Start accepts. Automaton has 5272 states and 17849 transitions. Word has length 39 [2021-06-12 22:42:00,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:00,270 INFO L482 AbstractCegarLoop]: Abstraction has 5272 states and 17849 transitions. [2021-06-12 22:42:00,270 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:00,270 INFO L276 IsEmpty]: Start isEmpty. Operand 5272 states and 17849 transitions. [2021-06-12 22:42:00,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:00,275 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:00,275 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:00,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-06-12 22:42:00,275 INFO L430 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:00,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:00,275 INFO L82 PathProgramCache]: Analyzing trace with hash 696139978, now seen corresponding path program 316 times [2021-06-12 22:42:00,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:00,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143979866] [2021-06-12 22:42:00,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:00,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:00,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143979866] [2021-06-12 22:42:00,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143979866] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:00,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:00,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:00,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041644787] [2021-06-12 22:42:00,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:00,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:00,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:00,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:00,449 INFO L87 Difference]: Start difference. First operand 5272 states and 17849 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:02,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:02,221 INFO L93 Difference]: Finished difference Result 5767 states and 19268 transitions. [2021-06-12 22:42:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-12 22:42:02,221 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 [2021-06-12 22:42:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:02,229 INFO L225 Difference]: With dead ends: 5767 [2021-06-12 22:42:02,229 INFO L226 Difference]: Without dead ends: 5724 [2021-06-12 22:42:02,230 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1137.9ms TimeCoverageRelationStatistics Valid=368, Invalid=3922, Unknown=0, NotChecked=0, Total=4290 [2021-06-12 22:42:02,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5724 states. [2021-06-12 22:42:02,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5724 to 5281. [2021-06-12 22:42:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 5280 states have (on average 3.385037878787879) internal successors, (17873), 5280 states have internal predecessors, (17873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:02,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 17873 transitions. [2021-06-12 22:42:02,297 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 17873 transitions. Word has length 39 [2021-06-12 22:42:02,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:02,297 INFO L482 AbstractCegarLoop]: Abstraction has 5281 states and 17873 transitions. [2021-06-12 22:42:02,297 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:02,297 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 17873 transitions. [2021-06-12 22:42:02,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:02,303 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:02,303 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:02,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-06-12 22:42:02,303 INFO L430 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:02,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:02,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1084458324, now seen corresponding path program 317 times [2021-06-12 22:42:02,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:02,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125765145] [2021-06-12 22:42:02,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:02,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:02,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125765145] [2021-06-12 22:42:02,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125765145] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:02,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:02,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:02,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291396804] [2021-06-12 22:42:02,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:02,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:02,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:02,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:02,475 INFO L87 Difference]: Start difference. First operand 5281 states and 17873 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:04,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:04,161 INFO L93 Difference]: Finished difference Result 5762 states and 19249 transitions. [2021-06-12 22:42:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-12 22:42:04,161 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:04,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:04,169 INFO L225 Difference]: With dead ends: 5762 [2021-06-12 22:42:04,169 INFO L226 Difference]: Without dead ends: 5710 [2021-06-12 22:42:04,169 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1117.9ms TimeCoverageRelationStatistics Valid=353, Invalid=3807, Unknown=0, NotChecked=0, Total=4160 [2021-06-12 22:42:04,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5710 states. [2021-06-12 22:42:04,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5710 to 5275. [2021-06-12 22:42:04,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5275 states, 5274 states have (on average 3.385855138414865) internal successors, (17857), 5274 states have internal predecessors, (17857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:04,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 17857 transitions. [2021-06-12 22:42:04,235 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 17857 transitions. Word has length 39 [2021-06-12 22:42:04,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:04,235 INFO L482 AbstractCegarLoop]: Abstraction has 5275 states and 17857 transitions. [2021-06-12 22:42:04,235 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) [2021-06-12 22:42:04,235 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 17857 transitions. [2021-06-12 22:42:04,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:04,241 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:04,241 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:04,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-06-12 22:42:04,241 INFO L430 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:04,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:04,241 INFO L82 PathProgramCache]: Analyzing trace with hash -841279252, now seen corresponding path program 318 times [2021-06-12 22:42:04,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:04,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058981506] [2021-06-12 22:42:04,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:04,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:04,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058981506] [2021-06-12 22:42:04,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058981506] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:04,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:04,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:04,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596917961] [2021-06-12 22:42:04,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:04,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:04,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:04,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:04,414 INFO L87 Difference]: Start difference. First operand 5275 states and 17857 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:05,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:05,620 INFO L93 Difference]: Finished difference Result 5746 states and 19166 transitions. [2021-06-12 22:42:05,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-12 22:42:05,621 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:05,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:05,629 INFO L225 Difference]: With dead ends: 5746 [2021-06-12 22:42:05,629 INFO L226 Difference]: Without dead ends: 5703 [2021-06-12 22:42:05,629 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 767.2ms TimeCoverageRelationStatistics Valid=255, Invalid=2397, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:42:05,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2021-06-12 22:42:05,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5284. [2021-06-12 22:42:05,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5284 states, 5283 states have (on average 3.384062085936021) internal successors, (17878), 5283 states have internal predecessors, (17878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:05,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5284 states to 5284 states and 17878 transitions. [2021-06-12 22:42:05,694 INFO L78 Accepts]: Start accepts. Automaton has 5284 states and 17878 transitions. Word has length 39 [2021-06-12 22:42:05,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:05,694 INFO L482 AbstractCegarLoop]: Abstraction has 5284 states and 17878 transitions. [2021-06-12 22:42:05,694 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:05,694 INFO L276 IsEmpty]: Start isEmpty. Operand 5284 states and 17878 transitions. [2021-06-12 22:42:05,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:05,700 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:05,700 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:05,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-06-12 22:42:05,700 INFO L430 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:05,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:05,700 INFO L82 PathProgramCache]: Analyzing trace with hash 908827884, now seen corresponding path program 319 times [2021-06-12 22:42:05,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:05,700 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306690448] [2021-06-12 22:42:05,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:05,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:05,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306690448] [2021-06-12 22:42:05,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306690448] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:05,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:05,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:05,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512356087] [2021-06-12 22:42:05,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:05,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:05,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:05,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:05,870 INFO L87 Difference]: Start difference. First operand 5284 states and 17878 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:07,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:07,138 INFO L93 Difference]: Finished difference Result 5709 states and 19080 transitions. [2021-06-12 22:42:07,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-12 22:42:07,138 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 [2021-06-12 22:42:07,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:07,147 INFO L225 Difference]: With dead ends: 5709 [2021-06-12 22:42:07,147 INFO L226 Difference]: Without dead ends: 5658 [2021-06-12 22:42:07,147 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 835.2ms TimeCoverageRelationStatistics Valid=262, Invalid=2494, Unknown=0, NotChecked=0, Total=2756 [2021-06-12 22:42:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2021-06-12 22:42:07,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 5278. [2021-06-12 22:42:07,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 3.3848777714610576) internal successors, (17862), 5277 states have internal predecessors, (17862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:07,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 17862 transitions. [2021-06-12 22:42:07,232 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 17862 transitions. Word has length 39 [2021-06-12 22:42:07,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:07,232 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 17862 transitions. [2021-06-12 22:42:07,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:07,232 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 17862 transitions. [2021-06-12 22:42:07,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:07,237 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:07,237 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:07,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-06-12 22:42:07,237 INFO L430 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:07,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:07,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1526046286, now seen corresponding path program 320 times [2021-06-12 22:42:07,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:07,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266670377] [2021-06-12 22:42:07,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:07,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:07,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266670377] [2021-06-12 22:42:07,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266670377] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:07,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:07,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:07,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439582184] [2021-06-12 22:42:07,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:07,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:07,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:07,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:07,416 INFO L87 Difference]: Start difference. First operand 5278 states and 17862 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:08,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:08,572 INFO L93 Difference]: Finished difference Result 5681 states and 19009 transitions. [2021-06-12 22:42:08,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-12 22:42:08,573 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:08,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:08,581 INFO L225 Difference]: With dead ends: 5681 [2021-06-12 22:42:08,581 INFO L226 Difference]: Without dead ends: 5635 [2021-06-12 22:42:08,581 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 723.3ms TimeCoverageRelationStatistics Valid=234, Invalid=2216, Unknown=0, NotChecked=0, Total=2450 [2021-06-12 22:42:08,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5635 states. [2021-06-12 22:42:08,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5635 to 5285. [2021-06-12 22:42:08,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5285 states, 5284 states have (on average 3.383232399697199) internal successors, (17877), 5284 states have internal predecessors, (17877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:08,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5285 states to 5285 states and 17877 transitions. [2021-06-12 22:42:08,647 INFO L78 Accepts]: Start accepts. Automaton has 5285 states and 17877 transitions. Word has length 39 [2021-06-12 22:42:08,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:08,647 INFO L482 AbstractCegarLoop]: Abstraction has 5285 states and 17877 transitions. [2021-06-12 22:42:08,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:08,647 INFO L276 IsEmpty]: Start isEmpty. Operand 5285 states and 17877 transitions. [2021-06-12 22:42:08,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:08,653 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:08,653 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:08,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-06-12 22:42:08,653 INFO L430 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:08,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:08,654 INFO L82 PathProgramCache]: Analyzing trace with hash 90978796, now seen corresponding path program 321 times [2021-06-12 22:42:08,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:08,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510671954] [2021-06-12 22:42:08,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:08,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:08,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510671954] [2021-06-12 22:42:08,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510671954] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:08,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:08,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:08,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339918248] [2021-06-12 22:42:08,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:08,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:08,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:08,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:08,828 INFO L87 Difference]: Start difference. First operand 5285 states and 17877 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:10,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:10,054 INFO L93 Difference]: Finished difference Result 5641 states and 18915 transitions. [2021-06-12 22:42:10,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:42:10,054 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:10,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:10,062 INFO L225 Difference]: With dead ends: 5641 [2021-06-12 22:42:10,062 INFO L226 Difference]: Without dead ends: 5580 [2021-06-12 22:42:10,063 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 780.8ms TimeCoverageRelationStatistics Valid=253, Invalid=2399, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:42:10,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5580 states. [2021-06-12 22:42:10,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5580 to 5269. [2021-06-12 22:42:10,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5269 states, 5268 states have (on average 3.3874335611237663) internal successors, (17845), 5268 states have internal predecessors, (17845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5269 states to 5269 states and 17845 transitions. [2021-06-12 22:42:10,128 INFO L78 Accepts]: Start accepts. Automaton has 5269 states and 17845 transitions. Word has length 39 [2021-06-12 22:42:10,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:10,128 INFO L482 AbstractCegarLoop]: Abstraction has 5269 states and 17845 transitions. [2021-06-12 22:42:10,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:10,128 INFO L276 IsEmpty]: Start isEmpty. Operand 5269 states and 17845 transitions. [2021-06-12 22:42:10,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:10,134 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:10,134 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:10,134 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-06-12 22:42:10,134 INFO L430 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:10,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:10,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1309260212, now seen corresponding path program 322 times [2021-06-12 22:42:10,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:10,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335108733] [2021-06-12 22:42:10,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:10,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:10,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335108733] [2021-06-12 22:42:10,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335108733] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:10,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:10,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:10,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514989949] [2021-06-12 22:42:10,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:10,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:10,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:10,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:10,309 INFO L87 Difference]: Start difference. First operand 5269 states and 17845 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:11,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:11,526 INFO L93 Difference]: Finished difference Result 5636 states and 18933 transitions. [2021-06-12 22:42:11,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-12 22:42:11,526 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 [2021-06-12 22:42:11,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:11,534 INFO L225 Difference]: With dead ends: 5636 [2021-06-12 22:42:11,534 INFO L226 Difference]: Without dead ends: 5573 [2021-06-12 22:42:11,534 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 776.0ms TimeCoverageRelationStatistics Valid=259, Invalid=2393, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:42:11,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5573 states. [2021-06-12 22:42:11,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5573 to 5273. [2021-06-12 22:42:11,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5273 states, 5272 states have (on average 3.3867602427921093) internal successors, (17855), 5272 states have internal predecessors, (17855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:11,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5273 states to 5273 states and 17855 transitions. [2021-06-12 22:42:11,599 INFO L78 Accepts]: Start accepts. Automaton has 5273 states and 17855 transitions. Word has length 39 [2021-06-12 22:42:11,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:11,599 INFO L482 AbstractCegarLoop]: Abstraction has 5273 states and 17855 transitions. [2021-06-12 22:42:11,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:11,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5273 states and 17855 transitions. [2021-06-12 22:42:11,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:11,605 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:11,605 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:11,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-06-12 22:42:11,605 INFO L430 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:11,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:11,605 INFO L82 PathProgramCache]: Analyzing trace with hash 901957054, now seen corresponding path program 323 times [2021-06-12 22:42:11,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:11,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537097071] [2021-06-12 22:42:11,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:11,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:11,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:11,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537097071] [2021-06-12 22:42:11,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537097071] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:11,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:11,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:11,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084720911] [2021-06-12 22:42:11,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:11,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:11,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:11,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:11,779 INFO L87 Difference]: Start difference. First operand 5273 states and 17855 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:12,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:12,957 INFO L93 Difference]: Finished difference Result 5675 states and 19022 transitions. [2021-06-12 22:42:12,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-12 22:42:12,957 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 [2021-06-12 22:42:12,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:12,965 INFO L225 Difference]: With dead ends: 5675 [2021-06-12 22:42:12,965 INFO L226 Difference]: Without dead ends: 5632 [2021-06-12 22:42:12,965 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 762.7ms TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:42:12,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5632 states. [2021-06-12 22:42:13,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5632 to 5291. [2021-06-12 22:42:13,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5291 states, 5290 states have (on average 3.382608695652174) internal successors, (17894), 5290 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) [2021-06-12 22:42:13,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5291 states to 5291 states and 17894 transitions. [2021-06-12 22:42:13,029 INFO L78 Accepts]: Start accepts. Automaton has 5291 states and 17894 transitions. Word has length 39 [2021-06-12 22:42:13,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:13,029 INFO L482 AbstractCegarLoop]: Abstraction has 5291 states and 17894 transitions. [2021-06-12 22:42:13,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:13,029 INFO L276 IsEmpty]: Start isEmpty. Operand 5291 states and 17894 transitions. [2021-06-12 22:42:13,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:13,034 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:13,034 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:13,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-06-12 22:42:13,034 INFO L430 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:13,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:13,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1731488224, now seen corresponding path program 324 times [2021-06-12 22:42:13,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:13,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5529279] [2021-06-12 22:42:13,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:13,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:13,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5529279] [2021-06-12 22:42:13,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5529279] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:13,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:13,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:13,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469407009] [2021-06-12 22:42:13,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:13,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:13,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:13,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:13,206 INFO L87 Difference]: Start difference. First operand 5291 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) [2021-06-12 22:42:14,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:14,373 INFO L93 Difference]: Finished difference Result 5606 states and 18848 transitions. [2021-06-12 22:42:14,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:42:14,373 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:14,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:14,381 INFO L225 Difference]: With dead ends: 5606 [2021-06-12 22:42:14,381 INFO L226 Difference]: Without dead ends: 5543 [2021-06-12 22:42:14,382 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 726.9ms TimeCoverageRelationStatistics Valid=232, Invalid=2218, Unknown=0, NotChecked=0, Total=2450 [2021-06-12 22:42:14,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5543 states. [2021-06-12 22:42:14,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5543 to 5273. [2021-06-12 22:42:14,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5273 states, 5272 states have (on average 3.386001517450683) internal successors, (17851), 5272 states have internal predecessors, (17851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:14,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5273 states to 5273 states and 17851 transitions. [2021-06-12 22:42:14,467 INFO L78 Accepts]: Start accepts. Automaton has 5273 states and 17851 transitions. Word has length 39 [2021-06-12 22:42:14,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:14,467 INFO L482 AbstractCegarLoop]: Abstraction has 5273 states and 17851 transitions. [2021-06-12 22:42:14,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:14,467 INFO L276 IsEmpty]: Start isEmpty. Operand 5273 states and 17851 transitions. [2021-06-12 22:42:14,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:14,473 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:14,473 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:14,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-06-12 22:42:14,473 INFO L430 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:14,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:14,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1555025490, now seen corresponding path program 325 times [2021-06-12 22:42:14,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:14,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167467721] [2021-06-12 22:42:14,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:14,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:14,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:14,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167467721] [2021-06-12 22:42:14,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167467721] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:14,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:14,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:14,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881095185] [2021-06-12 22:42:14,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:14,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:14,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:14,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:14,650 INFO L87 Difference]: Start difference. First operand 5273 states and 17851 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:15,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:15,943 INFO L93 Difference]: Finished difference Result 5675 states and 19024 transitions. [2021-06-12 22:42:15,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-12 22:42:15,944 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 [2021-06-12 22:42:15,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:15,952 INFO L225 Difference]: With dead ends: 5675 [2021-06-12 22:42:15,952 INFO L226 Difference]: Without dead ends: 5620 [2021-06-12 22:42:15,952 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 841.4ms TimeCoverageRelationStatistics Valid=285, Invalid=2685, Unknown=0, NotChecked=0, Total=2970 [2021-06-12 22:42:15,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5620 states. [2021-06-12 22:42:16,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5620 to 5275. [2021-06-12 22:42:16,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5275 states, 5274 states have (on average 3.385665529010239) internal successors, (17856), 5274 states have internal predecessors, (17856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 17856 transitions. [2021-06-12 22:42:16,018 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 17856 transitions. Word has length 39 [2021-06-12 22:42:16,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:16,018 INFO L482 AbstractCegarLoop]: Abstraction has 5275 states and 17856 transitions. [2021-06-12 22:42:16,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:16,018 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 17856 transitions. [2021-06-12 22:42:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:16,024 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:16,024 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:16,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-06-12 22:42:16,024 INFO L430 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:16,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:16,024 INFO L82 PathProgramCache]: Analyzing trace with hash -217967476, now seen corresponding path program 326 times [2021-06-12 22:42:16,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:16,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508529300] [2021-06-12 22:42:16,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:16,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:16,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508529300] [2021-06-12 22:42:16,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508529300] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:16,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:16,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:16,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695690011] [2021-06-12 22:42:16,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:16,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:16,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:16,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:16,223 INFO L87 Difference]: Start difference. First operand 5275 states and 17856 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:17,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:17,511 INFO L93 Difference]: Finished difference Result 5651 states and 18954 transitions. [2021-06-12 22:42:17,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-12 22:42:17,512 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:17,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:17,520 INFO L225 Difference]: With dead ends: 5651 [2021-06-12 22:42:17,520 INFO L226 Difference]: Without dead ends: 5608 [2021-06-12 22:42:17,520 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 871.8ms TimeCoverageRelationStatistics Valid=261, Invalid=2495, Unknown=0, NotChecked=0, Total=2756 [2021-06-12 22:42:17,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5608 states. [2021-06-12 22:42:17,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5608 to 5281. [2021-06-12 22:42:17,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 5280 states have (on average 3.384280303030303) internal successors, (17869), 5280 states have internal predecessors, (17869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:17,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 17869 transitions. [2021-06-12 22:42:17,586 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 17869 transitions. Word has length 39 [2021-06-12 22:42:17,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:17,586 INFO L482 AbstractCegarLoop]: Abstraction has 5281 states and 17869 transitions. [2021-06-12 22:42:17,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:17,586 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 17869 transitions. [2021-06-12 22:42:17,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:17,592 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:17,592 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:17,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-06-12 22:42:17,592 INFO L430 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:17,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:17,592 INFO L82 PathProgramCache]: Analyzing trace with hash -489387026, now seen corresponding path program 327 times [2021-06-12 22:42:17,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:17,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719985001] [2021-06-12 22:42:17,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:17,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:17,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719985001] [2021-06-12 22:42:17,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719985001] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:17,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:17,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:17,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180542688] [2021-06-12 22:42:17,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:17,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:17,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:17,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:17,765 INFO L87 Difference]: Start difference. First operand 5281 states and 17869 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:19,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:19,010 INFO L93 Difference]: Finished difference Result 5600 states and 18831 transitions. [2021-06-12 22:42:19,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-12 22:42:19,010 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:19,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:19,019 INFO L225 Difference]: With dead ends: 5600 [2021-06-12 22:42:19,019 INFO L226 Difference]: Without dead ends: 5539 [2021-06-12 22:42:19,019 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 786.5ms TimeCoverageRelationStatistics Valid=247, Invalid=2405, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:42:19,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5539 states. [2021-06-12 22:42:19,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5539 to 5269. [2021-06-12 22:42:19,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5269 states, 5268 states have (on average 3.3870539104024298) internal successors, (17843), 5268 states have internal predecessors, (17843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5269 states to 5269 states and 17843 transitions. [2021-06-12 22:42:19,084 INFO L78 Accepts]: Start accepts. Automaton has 5269 states and 17843 transitions. Word has length 39 [2021-06-12 22:42:19,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:19,084 INFO L482 AbstractCegarLoop]: Abstraction has 5269 states and 17843 transitions. [2021-06-12 22:42:19,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:19,084 INFO L276 IsEmpty]: Start isEmpty. Operand 5269 states and 17843 transitions. [2021-06-12 22:42:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:19,089 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:19,089 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:19,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-06-12 22:42:19,089 INFO L430 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:19,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:19,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1637062464, now seen corresponding path program 328 times [2021-06-12 22:42:19,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:19,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260771230] [2021-06-12 22:42:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:19,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:19,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260771230] [2021-06-12 22:42:19,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260771230] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:19,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:19,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:19,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086721561] [2021-06-12 22:42:19,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:19,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:19,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:19,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:19,271 INFO L87 Difference]: Start difference. First operand 5269 states and 17843 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:20,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:20,781 INFO L93 Difference]: Finished difference Result 5834 states and 19388 transitions. [2021-06-12 22:42:20,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-12 22:42:20,781 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 [2021-06-12 22:42:20,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:20,790 INFO L225 Difference]: With dead ends: 5834 [2021-06-12 22:42:20,790 INFO L226 Difference]: Without dead ends: 5779 [2021-06-12 22:42:20,791 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 1038.3ms TimeCoverageRelationStatistics Valid=353, Invalid=3307, Unknown=0, NotChecked=0, Total=3660 [2021-06-12 22:42:20,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5779 states. [2021-06-12 22:42:20,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5779 to 5274. [2021-06-12 22:42:20,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5274 states, 5273 states have (on average 3.386117959415892) internal successors, (17855), 5273 states have internal predecessors, (17855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:20,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 17855 transitions. [2021-06-12 22:42:20,862 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 17855 transitions. Word has length 39 [2021-06-12 22:42:20,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:20,862 INFO L482 AbstractCegarLoop]: Abstraction has 5274 states and 17855 transitions. [2021-06-12 22:42:20,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:20,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 17855 transitions. [2021-06-12 22:42:20,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:20,868 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:20,868 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:20,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-06-12 22:42:20,868 INFO L430 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:20,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:20,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1485252610, now seen corresponding path program 329 times [2021-06-12 22:42:20,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:20,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085911792] [2021-06-12 22:42:20,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:21,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:21,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:21,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085911792] [2021-06-12 22:42:21,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085911792] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:21,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:21,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:21,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093950048] [2021-06-12 22:42:21,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:21,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:21,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:21,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:21,042 INFO L87 Difference]: Start difference. First operand 5274 states and 17855 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:22,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:22,401 INFO L93 Difference]: Finished difference Result 5825 states and 19355 transitions. [2021-06-12 22:42:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-12 22:42:22,402 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 [2021-06-12 22:42:22,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:22,410 INFO L225 Difference]: With dead ends: 5825 [2021-06-12 22:42:22,410 INFO L226 Difference]: Without dead ends: 5779 [2021-06-12 22:42:22,410 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 889.8ms TimeCoverageRelationStatistics Valid=299, Invalid=2781, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:42:22,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5779 states. [2021-06-12 22:42:22,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5779 to 5280. [2021-06-12 22:42:22,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5280 states, 5279 states have (on average 3.385110816442508) internal successors, (17870), 5279 states have internal predecessors, (17870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:22,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5280 states to 5280 states and 17870 transitions. [2021-06-12 22:42:22,481 INFO L78 Accepts]: Start accepts. Automaton has 5280 states and 17870 transitions. Word has length 39 [2021-06-12 22:42:22,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:22,481 INFO L482 AbstractCegarLoop]: Abstraction has 5280 states and 17870 transitions. [2021-06-12 22:42:22,481 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:22,481 INFO L276 IsEmpty]: Start isEmpty. Operand 5280 states and 17870 transitions. [2021-06-12 22:42:22,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:22,487 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:22,487 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:22,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-06-12 22:42:22,487 INFO L430 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:22,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:22,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1732718772, now seen corresponding path program 330 times [2021-06-12 22:42:22,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:22,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159167034] [2021-06-12 22:42:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:22,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:22,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159167034] [2021-06-12 22:42:22,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159167034] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:22,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:22,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:22,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097582544] [2021-06-12 22:42:22,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:22,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:22,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:22,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:22,656 INFO L87 Difference]: Start difference. First operand 5280 states and 17870 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:24,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:24,004 INFO L93 Difference]: Finished difference Result 5789 states and 19272 transitions. [2021-06-12 22:42:24,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-12 22:42:24,004 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:24,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:24,012 INFO L225 Difference]: With dead ends: 5789 [2021-06-12 22:42:24,012 INFO L226 Difference]: Without dead ends: 5744 [2021-06-12 22:42:24,012 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 910.2ms TimeCoverageRelationStatistics Valid=300, Invalid=2780, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:42:24,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2021-06-12 22:42:24,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 5278. [2021-06-12 22:42:24,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 3.385635777904112) internal successors, (17866), 5277 states have internal predecessors, (17866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:24,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 17866 transitions. [2021-06-12 22:42:24,076 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 17866 transitions. Word has length 39 [2021-06-12 22:42:24,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:24,076 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 17866 transitions. [2021-06-12 22:42:24,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 17866 transitions. [2021-06-12 22:42:24,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:24,082 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:24,082 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:24,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-06-12 22:42:24,082 INFO L430 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:24,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:24,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1552997490, now seen corresponding path program 331 times [2021-06-12 22:42:24,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:24,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724281007] [2021-06-12 22:42:24,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:24,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:24,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724281007] [2021-06-12 22:42:24,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724281007] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:24,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:24,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:24,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157173015] [2021-06-12 22:42:24,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:24,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:24,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:24,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:24,251 INFO L87 Difference]: Start difference. First operand 5278 states and 17866 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:25,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:25,637 INFO L93 Difference]: Finished difference Result 5840 states and 19400 transitions. [2021-06-12 22:42:25,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-12 22:42:25,637 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:25,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:25,645 INFO L225 Difference]: With dead ends: 5840 [2021-06-12 22:42:25,645 INFO L226 Difference]: Without dead ends: 5797 [2021-06-12 22:42:25,645 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 919.6ms TimeCoverageRelationStatistics Valid=312, Invalid=2994, Unknown=0, NotChecked=0, Total=3306 [2021-06-12 22:42:25,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5797 states. [2021-06-12 22:42:25,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5797 to 5287. [2021-06-12 22:42:25,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5287 states, 5286 states have (on average 3.383844116534241) internal successors, (17887), 5286 states have internal predecessors, (17887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 17887 transitions. [2021-06-12 22:42:25,709 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 17887 transitions. Word has length 39 [2021-06-12 22:42:25,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:25,709 INFO L482 AbstractCegarLoop]: Abstraction has 5287 states and 17887 transitions. [2021-06-12 22:42:25,709 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) [2021-06-12 22:42:25,710 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 17887 transitions. [2021-06-12 22:42:25,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:25,715 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:25,715 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:25,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-06-12 22:42:25,715 INFO L430 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:25,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:25,715 INFO L82 PathProgramCache]: Analyzing trace with hash 197109646, now seen corresponding path program 332 times [2021-06-12 22:42:25,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:25,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137495642] [2021-06-12 22:42:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:25,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:25,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137495642] [2021-06-12 22:42:25,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137495642] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:25,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:25,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:25,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643438125] [2021-06-12 22:42:25,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:25,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:25,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:25,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:25,884 INFO L87 Difference]: Start difference. First operand 5287 states and 17887 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:27,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:27,191 INFO L93 Difference]: Finished difference Result 5805 states and 19315 transitions. [2021-06-12 22:42:27,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-12 22:42:27,191 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:27,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:27,200 INFO L225 Difference]: With dead ends: 5805 [2021-06-12 22:42:27,200 INFO L226 Difference]: Without dead ends: 5754 [2021-06-12 22:42:27,200 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 845.2ms TimeCoverageRelationStatistics Valid=287, Invalid=2793, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:42:27,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5754 states. [2021-06-12 22:42:27,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5754 to 5287. [2021-06-12 22:42:27,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5287 states, 5286 states have (on average 3.3832765796443436) internal successors, (17884), 5286 states have internal predecessors, (17884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:27,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 17884 transitions. [2021-06-12 22:42:27,293 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 17884 transitions. Word has length 39 [2021-06-12 22:42:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:27,293 INFO L482 AbstractCegarLoop]: Abstraction has 5287 states and 17884 transitions. [2021-06-12 22:42:27,293 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) [2021-06-12 22:42:27,294 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 17884 transitions. [2021-06-12 22:42:27,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:27,299 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:27,299 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:27,299 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-06-12 22:42:27,299 INFO L430 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:27,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:27,299 INFO L82 PathProgramCache]: Analyzing trace with hash 814328048, now seen corresponding path program 333 times [2021-06-12 22:42:27,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:27,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026108049] [2021-06-12 22:42:27,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:27,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:27,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026108049] [2021-06-12 22:42:27,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026108049] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:27,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:27,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:27,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649090809] [2021-06-12 22:42:27,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:27,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:27,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:27,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:27,471 INFO L87 Difference]: Start difference. First operand 5287 states and 17884 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:28,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:28,752 INFO L93 Difference]: Finished difference Result 5828 states and 19359 transitions. [2021-06-12 22:42:28,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-12 22:42:28,752 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 [2021-06-12 22:42:28,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:28,761 INFO L225 Difference]: With dead ends: 5828 [2021-06-12 22:42:28,761 INFO L226 Difference]: Without dead ends: 5782 [2021-06-12 22:42:28,761 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 831.8ms TimeCoverageRelationStatistics Valid=271, Invalid=2591, Unknown=0, NotChecked=0, Total=2862 [2021-06-12 22:42:28,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5782 states. [2021-06-12 22:42:28,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5782 to 5294. [2021-06-12 22:42:28,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 5293 states have (on average 3.3816361231815604) internal successors, (17899), 5293 states have internal predecessors, (17899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:28,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 17899 transitions. [2021-06-12 22:42:28,828 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 17899 transitions. Word has length 39 [2021-06-12 22:42:28,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:28,828 INFO L482 AbstractCegarLoop]: Abstraction has 5294 states and 17899 transitions. [2021-06-12 22:42:28,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:28,829 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 17899 transitions. [2021-06-12 22:42:28,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:28,834 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:28,834 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:28,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-06-12 22:42:28,834 INFO L430 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:28,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:28,834 INFO L82 PathProgramCache]: Analyzing trace with hash -620739442, now seen corresponding path program 334 times [2021-06-12 22:42:28,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:28,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953078143] [2021-06-12 22:42:28,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:29,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:29,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953078143] [2021-06-12 22:42:29,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953078143] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:29,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:29,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:29,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151701235] [2021-06-12 22:42:29,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:29,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:29,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:29,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:29,031 INFO L87 Difference]: Start difference. First operand 5294 states and 17899 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:30,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:30,327 INFO L93 Difference]: Finished difference Result 5791 states and 19268 transitions. [2021-06-12 22:42:30,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-12 22:42:30,327 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:30,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:30,336 INFO L225 Difference]: With dead ends: 5791 [2021-06-12 22:42:30,336 INFO L226 Difference]: Without dead ends: 5736 [2021-06-12 22:42:30,336 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 860.0ms TimeCoverageRelationStatistics Valid=277, Invalid=2693, Unknown=0, NotChecked=0, Total=2970 [2021-06-12 22:42:30,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5736 states. [2021-06-12 22:42:30,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5736 to 5291. [2021-06-12 22:42:30,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5291 states, 5290 states have (on average 3.3824196597353495) internal successors, (17893), 5290 states have internal predecessors, (17893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:30,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5291 states to 5291 states and 17893 transitions. [2021-06-12 22:42:30,402 INFO L78 Accepts]: Start accepts. Automaton has 5291 states and 17893 transitions. Word has length 39 [2021-06-12 22:42:30,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:30,402 INFO L482 AbstractCegarLoop]: Abstraction has 5291 states and 17893 transitions. [2021-06-12 22:42:30,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:30,402 INFO L276 IsEmpty]: Start isEmpty. Operand 5291 states and 17893 transitions. [2021-06-12 22:42:30,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:30,407 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:30,407 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:30,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-06-12 22:42:30,407 INFO L430 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:30,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:30,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1903442560, now seen corresponding path program 335 times [2021-06-12 22:42:30,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:30,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886629700] [2021-06-12 22:42:30,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:30,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:30,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:30,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886629700] [2021-06-12 22:42:30,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886629700] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:30,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:30,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:30,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284160859] [2021-06-12 22:42:30,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:30,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:30,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:30,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:30,582 INFO L87 Difference]: Start difference. First operand 5291 states and 17893 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:31,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:31,930 INFO L93 Difference]: Finished difference Result 5775 states and 19228 transitions. [2021-06-12 22:42:31,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-12 22:42:31,930 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 [2021-06-12 22:42:31,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:31,938 INFO L225 Difference]: With dead ends: 5775 [2021-06-12 22:42:31,938 INFO L226 Difference]: Without dead ends: 5718 [2021-06-12 22:42:31,939 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 861.5ms TimeCoverageRelationStatistics Valid=285, Invalid=2795, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:42:31,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2021-06-12 22:42:31,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 5283. [2021-06-12 22:42:31,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5283 states, 5282 states have (on average 3.3839454751987885) internal successors, (17874), 5282 states have internal predecessors, (17874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:32,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5283 states to 5283 states and 17874 transitions. [2021-06-12 22:42:32,005 INFO L78 Accepts]: Start accepts. Automaton has 5283 states and 17874 transitions. Word has length 39 [2021-06-12 22:42:32,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:32,005 INFO L482 AbstractCegarLoop]: Abstraction has 5283 states and 17874 transitions. [2021-06-12 22:42:32,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:32,005 INFO L276 IsEmpty]: Start isEmpty. Operand 5283 states and 17874 transitions. [2021-06-12 22:42:32,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:32,010 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:32,010 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:32,010 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-06-12 22:42:32,010 INFO L430 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:32,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1162710934, now seen corresponding path program 336 times [2021-06-12 22:42:32,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:32,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428624211] [2021-06-12 22:42:32,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:32,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:32,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428624211] [2021-06-12 22:42:32,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428624211] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:32,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:32,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:32,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204711305] [2021-06-12 22:42:32,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:32,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:32,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:32,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:32,188 INFO L87 Difference]: Start difference. First operand 5283 states and 17874 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:33,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:33,488 INFO L93 Difference]: Finished difference Result 5706 states and 19073 transitions. [2021-06-12 22:42:33,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:42:33,488 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:33,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:33,497 INFO L225 Difference]: With dead ends: 5706 [2021-06-12 22:42:33,497 INFO L226 Difference]: Without dead ends: 5663 [2021-06-12 22:42:33,497 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 841.9ms TimeCoverageRelationStatistics Valid=272, Invalid=2590, Unknown=0, NotChecked=0, Total=2862 [2021-06-12 22:42:33,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5663 states. [2021-06-12 22:42:33,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5663 to 5279. [2021-06-12 22:42:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5279 states, 5278 states have (on average 3.3846153846153846) internal successors, (17864), 5278 states have internal predecessors, (17864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:33,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5279 states to 5279 states and 17864 transitions. [2021-06-12 22:42:33,568 INFO L78 Accepts]: Start accepts. Automaton has 5279 states and 17864 transitions. Word has length 39 [2021-06-12 22:42:33,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:33,568 INFO L482 AbstractCegarLoop]: Abstraction has 5279 states and 17864 transitions. [2021-06-12 22:42:33,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:33,568 INFO L276 IsEmpty]: Start isEmpty. Operand 5279 states and 17864 transitions. [2021-06-12 22:42:33,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:33,574 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:33,574 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:33,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-06-12 22:42:33,574 INFO L430 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:33,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:33,574 INFO L82 PathProgramCache]: Analyzing trace with hash 674046556, now seen corresponding path program 337 times [2021-06-12 22:42:33,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:33,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688390699] [2021-06-12 22:42:33,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:33,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:33,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:33,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688390699] [2021-06-12 22:42:33,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688390699] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:33,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:33,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:33,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843638634] [2021-06-12 22:42:33,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:33,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:33,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:33,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:33,745 INFO L87 Difference]: Start difference. First operand 5279 states and 17864 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:35,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:35,047 INFO L93 Difference]: Finished difference Result 5704 states and 19064 transitions. [2021-06-12 22:42:35,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:42:35,047 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:35,055 INFO L225 Difference]: With dead ends: 5704 [2021-06-12 22:42:35,055 INFO L226 Difference]: Without dead ends: 5643 [2021-06-12 22:42:35,056 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 843.7ms TimeCoverageRelationStatistics Valid=269, Invalid=2593, Unknown=0, NotChecked=0, Total=2862 [2021-06-12 22:42:35,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5643 states. [2021-06-12 22:42:35,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5643 to 5267. [2021-06-12 22:42:35,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5266 states have (on average 3.387580706418534) internal successors, (17839), 5266 states have internal predecessors, (17839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:35,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 17839 transitions. [2021-06-12 22:42:35,120 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 17839 transitions. Word has length 39 [2021-06-12 22:42:35,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:35,120 INFO L482 AbstractCegarLoop]: Abstraction has 5267 states and 17839 transitions. [2021-06-12 22:42:35,120 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:35,121 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 17839 transitions. [2021-06-12 22:42:35,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:35,126 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:35,126 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:35,126 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-06-12 22:42:35,127 INFO L430 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:35,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:35,127 INFO L82 PathProgramCache]: Analyzing trace with hash 834080634, now seen corresponding path program 338 times [2021-06-12 22:42:35,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:35,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869295371] [2021-06-12 22:42:35,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:35,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:35,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869295371] [2021-06-12 22:42:35,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869295371] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:35,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:35,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:35,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155180072] [2021-06-12 22:42:35,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:35,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:35,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:35,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:35,307 INFO L87 Difference]: Start difference. First operand 5267 states and 17839 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:36,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:36,370 INFO L93 Difference]: Finished difference Result 5556 states and 18699 transitions. [2021-06-12 22:42:36,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:42:36,371 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:36,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:36,379 INFO L225 Difference]: With dead ends: 5556 [2021-06-12 22:42:36,380 INFO L226 Difference]: Without dead ends: 5493 [2021-06-12 22:42:36,380 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 655.5ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-06-12 22:42:36,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5493 states. [2021-06-12 22:42:36,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5493 to 5299. [2021-06-12 22:42:36,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5299 states, 5298 states have (on average 3.3829747074367686) internal successors, (17923), 5298 states have internal predecessors, (17923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5299 states to 5299 states and 17923 transitions. [2021-06-12 22:42:36,470 INFO L78 Accepts]: Start accepts. Automaton has 5299 states and 17923 transitions. Word has length 39 [2021-06-12 22:42:36,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:36,470 INFO L482 AbstractCegarLoop]: Abstraction has 5299 states and 17923 transitions. [2021-06-12 22:42:36,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:36,470 INFO L276 IsEmpty]: Start isEmpty. Operand 5299 states and 17923 transitions. [2021-06-12 22:42:36,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:36,476 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:36,476 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:36,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-06-12 22:42:36,476 INFO L430 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:36,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:36,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1176242350, now seen corresponding path program 339 times [2021-06-12 22:42:36,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:36,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781387476] [2021-06-12 22:42:36,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:36,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:36,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781387476] [2021-06-12 22:42:36,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781387476] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:36,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:36,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:36,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313124337] [2021-06-12 22:42:36,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:36,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:36,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:36,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:36,653 INFO L87 Difference]: Start difference. First operand 5299 states and 17923 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:37,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:37,749 INFO L93 Difference]: Finished difference Result 5580 states and 18759 transitions. [2021-06-12 22:42:37,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:42:37,749 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:37,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:37,758 INFO L225 Difference]: With dead ends: 5580 [2021-06-12 22:42:37,758 INFO L226 Difference]: Without dead ends: 5457 [2021-06-12 22:42:37,758 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 663.4ms TimeCoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:42:37,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5457 states. [2021-06-12 22:42:37,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5457 to 5267. [2021-06-12 22:42:37,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5266 states have (on average 3.3845423471325486) internal successors, (17823), 5266 states have internal predecessors, (17823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:37,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 17823 transitions. [2021-06-12 22:42:37,837 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 17823 transitions. Word has length 39 [2021-06-12 22:42:37,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:37,837 INFO L482 AbstractCegarLoop]: Abstraction has 5267 states and 17823 transitions. [2021-06-12 22:42:37,837 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) [2021-06-12 22:42:37,837 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 17823 transitions. [2021-06-12 22:42:37,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:37,842 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:37,842 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:37,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-06-12 22:42:37,843 INFO L430 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:37,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:37,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1040599352, now seen corresponding path program 340 times [2021-06-12 22:42:37,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:37,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332997963] [2021-06-12 22:42:37,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:38,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:38,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:38,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332997963] [2021-06-12 22:42:38,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332997963] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:38,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:38,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:38,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085200830] [2021-06-12 22:42:38,029 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:38,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:38,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:38,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:38,030 INFO L87 Difference]: Start difference. First operand 5267 states and 17823 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:39,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:39,099 INFO L93 Difference]: Finished difference Result 5540 states and 18645 transitions. [2021-06-12 22:42:39,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-12 22:42:39,099 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:39,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:39,107 INFO L225 Difference]: With dead ends: 5540 [2021-06-12 22:42:39,107 INFO L226 Difference]: Without dead ends: 5477 [2021-06-12 22:42:39,108 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 687.4ms TimeCoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:42:39,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5477 states. [2021-06-12 22:42:39,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5477 to 5267. [2021-06-12 22:42:39,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5266 states have (on average 3.383782757311052) internal successors, (17819), 5266 states have internal predecessors, (17819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 17819 transitions. [2021-06-12 22:42:39,174 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 17819 transitions. Word has length 39 [2021-06-12 22:42:39,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:39,174 INFO L482 AbstractCegarLoop]: Abstraction has 5267 states and 17819 transitions. [2021-06-12 22:42:39,174 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:39,175 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 17819 transitions. [2021-06-12 22:42:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:39,180 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:39,180 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:39,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-06-12 22:42:39,180 INFO L430 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:39,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:39,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1043150678, now seen corresponding path program 341 times [2021-06-12 22:42:39,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:39,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838970523] [2021-06-12 22:42:39,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:39,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:39,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838970523] [2021-06-12 22:42:39,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838970523] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:39,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:39,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:39,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213292657] [2021-06-12 22:42:39,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:39,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:39,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:39,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:39,352 INFO L87 Difference]: Start difference. First operand 5267 states and 17819 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:40,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:40,405 INFO L93 Difference]: Finished difference Result 5557 states and 18671 transitions. [2021-06-12 22:42:40,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:42:40,405 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:40,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:40,413 INFO L225 Difference]: With dead ends: 5557 [2021-06-12 22:42:40,414 INFO L226 Difference]: Without dead ends: 5514 [2021-06-12 22:42:40,414 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 651.5ms TimeCoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2021-06-12 22:42:40,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5514 states. [2021-06-12 22:42:40,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5514 to 5273. [2021-06-12 22:42:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5273 states, 5272 states have (on average 3.3823975720789075) internal successors, (17832), 5272 states have internal predecessors, (17832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:40,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5273 states to 5273 states and 17832 transitions. [2021-06-12 22:42:40,482 INFO L78 Accepts]: Start accepts. Automaton has 5273 states and 17832 transitions. Word has length 39 [2021-06-12 22:42:40,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:40,482 INFO L482 AbstractCegarLoop]: Abstraction has 5273 states and 17832 transitions. [2021-06-12 22:42:40,482 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:40,482 INFO L276 IsEmpty]: Start isEmpty. Operand 5273 states and 17832 transitions. [2021-06-12 22:42:40,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:40,488 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:40,488 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:40,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-06-12 22:42:40,488 INFO L430 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:40,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:40,488 INFO L82 PathProgramCache]: Analyzing trace with hash -213619508, now seen corresponding path program 342 times [2021-06-12 22:42:40,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:40,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099964382] [2021-06-12 22:42:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:40,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:40,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099964382] [2021-06-12 22:42:40,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099964382] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:40,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:40,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:40,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819430982] [2021-06-12 22:42:40,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:40,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:40,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:40,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:40,660 INFO L87 Difference]: Start difference. First operand 5273 states and 17832 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:41,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:41,668 INFO L93 Difference]: Finished difference Result 5512 states and 18567 transitions. [2021-06-12 22:42:41,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-12 22:42:41,668 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:41,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:41,676 INFO L225 Difference]: With dead ends: 5512 [2021-06-12 22:42:41,677 INFO L226 Difference]: Without dead ends: 5449 [2021-06-12 22:42:41,677 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 613.7ms TimeCoverageRelationStatistics Valid=188, Invalid=1792, Unknown=0, NotChecked=0, Total=1980 [2021-06-12 22:42:41,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2021-06-12 22:42:41,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 5255. [2021-06-12 22:42:41,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5255 states, 5254 states have (on average 3.3858012942519986) internal successors, (17789), 5254 states have internal predecessors, (17789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:41,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 17789 transitions. [2021-06-12 22:42:41,770 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 17789 transitions. Word has length 39 [2021-06-12 22:42:41,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:41,770 INFO L482 AbstractCegarLoop]: Abstraction has 5255 states and 17789 transitions. [2021-06-12 22:42:41,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:41,770 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 17789 transitions. [2021-06-12 22:42:41,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:41,775 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:41,775 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:41,775 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-06-12 22:42:41,776 INFO L430 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:41,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:41,776 INFO L82 PathProgramCache]: Analyzing trace with hash 794834074, now seen corresponding path program 343 times [2021-06-12 22:42:41,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:41,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643587685] [2021-06-12 22:42:41,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:41,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:41,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:41,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643587685] [2021-06-12 22:42:41,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643587685] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:41,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:41,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:41,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568012446] [2021-06-12 22:42:41,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:41,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:41,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:41,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:41,948 INFO L87 Difference]: Start difference. First operand 5255 states and 17789 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:43,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:43,073 INFO L93 Difference]: Finished difference Result 5575 states and 18724 transitions. [2021-06-12 22:42:43,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:42:43,073 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:43,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:43,082 INFO L225 Difference]: With dead ends: 5575 [2021-06-12 22:42:43,082 INFO L226 Difference]: Without dead ends: 5520 [2021-06-12 22:42:43,082 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 715.0ms TimeCoverageRelationStatistics Valid=234, Invalid=2216, Unknown=0, NotChecked=0, Total=2450 [2021-06-12 22:42:43,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5520 states. [2021-06-12 22:42:43,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5520 to 5257. [2021-06-12 22:42:43,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5256 states have (on average 3.3854642313546424) internal successors, (17794), 5256 states have internal predecessors, (17794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:43,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 17794 transitions. [2021-06-12 22:42:43,145 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 17794 transitions. Word has length 39 [2021-06-12 22:42:43,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:43,145 INFO L482 AbstractCegarLoop]: Abstraction has 5257 states and 17794 transitions. [2021-06-12 22:42:43,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:43,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 17794 transitions. [2021-06-12 22:42:43,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:43,151 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:43,151 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:43,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-06-12 22:42:43,151 INFO L430 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:43,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:43,151 INFO L82 PathProgramCache]: Analyzing trace with hash 2131892088, now seen corresponding path program 344 times [2021-06-12 22:42:43,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:43,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140309649] [2021-06-12 22:42:43,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:43,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:43,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:43,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140309649] [2021-06-12 22:42:43,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140309649] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:43,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:43,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:43,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377138512] [2021-06-12 22:42:43,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:43,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:43,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:43,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:43,323 INFO L87 Difference]: Start difference. First operand 5257 states and 17794 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:44,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:44,409 INFO L93 Difference]: Finished difference Result 5551 states and 18654 transitions. [2021-06-12 22:42:44,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-12 22:42:44,409 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:44,418 INFO L225 Difference]: With dead ends: 5551 [2021-06-12 22:42:44,418 INFO L226 Difference]: Without dead ends: 5508 [2021-06-12 22:42:44,418 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 667.8ms TimeCoverageRelationStatistics Valid=213, Invalid=2043, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:42:44,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-06-12 22:42:44,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 5263. [2021-06-12 22:42:44,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5262 states have (on average 3.3840744963892058) internal successors, (17807), 5262 states have internal predecessors, (17807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:44,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 17807 transitions. [2021-06-12 22:42:44,484 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 17807 transitions. Word has length 39 [2021-06-12 22:42:44,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:44,484 INFO L482 AbstractCegarLoop]: Abstraction has 5263 states and 17807 transitions. [2021-06-12 22:42:44,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:44,485 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 17807 transitions. [2021-06-12 22:42:44,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:44,490 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:44,490 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:44,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-06-12 22:42:44,490 INFO L430 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:44,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:44,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1860472538, now seen corresponding path program 345 times [2021-06-12 22:42:44,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:44,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765681780] [2021-06-12 22:42:44,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:44,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:44,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:44,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765681780] [2021-06-12 22:42:44,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765681780] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:44,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:44,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:44,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123939897] [2021-06-12 22:42:44,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:44,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:44,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:44,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:44,668 INFO L87 Difference]: Start difference. First operand 5263 states and 17807 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:45,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:45,712 INFO L93 Difference]: Finished difference Result 5506 states and 18550 transitions. [2021-06-12 22:42:45,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:42:45,713 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:45,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:45,721 INFO L225 Difference]: With dead ends: 5506 [2021-06-12 22:42:45,721 INFO L226 Difference]: Without dead ends: 5445 [2021-06-12 22:42:45,721 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 656.4ms TimeCoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2021-06-12 22:42:45,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5445 states. [2021-06-12 22:42:45,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5445 to 5251. [2021-06-12 22:42:45,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 3.3864761904761904) internal successors, (17779), 5250 states have internal predecessors, (17779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 17779 transitions. [2021-06-12 22:42:45,784 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 17779 transitions. Word has length 39 [2021-06-12 22:42:45,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:45,784 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 17779 transitions. [2021-06-12 22:42:45,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:45,784 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 17779 transitions. [2021-06-12 22:42:45,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:45,790 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:45,790 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:45,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-06-12 22:42:45,790 INFO L430 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:45,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:45,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1395679148, now seen corresponding path program 346 times [2021-06-12 22:42:45,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:45,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566020531] [2021-06-12 22:42:45,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:45,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:45,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566020531] [2021-06-12 22:42:45,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566020531] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:45,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:45,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:45,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997662219] [2021-06-12 22:42:45,962 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:45,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:45,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:45,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:45,962 INFO L87 Difference]: Start difference. First operand 5251 states and 17779 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:47,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:47,039 INFO L93 Difference]: Finished difference Result 5548 states and 18675 transitions. [2021-06-12 22:42:47,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-12 22:42:47,039 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:47,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:47,048 INFO L225 Difference]: With dead ends: 5548 [2021-06-12 22:42:47,048 INFO L226 Difference]: Without dead ends: 5457 [2021-06-12 22:42:47,048 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 663.7ms TimeCoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:42:47,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5457 states. [2021-06-12 22:42:47,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5457 to 5257. [2021-06-12 22:42:47,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5256 states have (on average 3.3854642313546424) internal successors, (17794), 5256 states have internal predecessors, (17794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:47,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 17794 transitions. [2021-06-12 22:42:47,142 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 17794 transitions. Word has length 39 [2021-06-12 22:42:47,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:47,142 INFO L482 AbstractCegarLoop]: Abstraction has 5257 states and 17794 transitions. [2021-06-12 22:42:47,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:47,142 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 17794 transitions. [2021-06-12 22:42:47,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:47,148 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:47,148 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:47,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-06-12 22:42:47,148 INFO L430 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:47,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:47,149 INFO L82 PathProgramCache]: Analyzing trace with hash -856969554, now seen corresponding path program 347 times [2021-06-12 22:42:47,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:47,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136341810] [2021-06-12 22:42:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:47,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:47,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:47,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136341810] [2021-06-12 22:42:47,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136341810] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:47,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:47,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:47,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859632439] [2021-06-12 22:42:47,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:47,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:47,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:47,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:47,321 INFO L87 Difference]: Start difference. First operand 5257 states and 17794 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:48,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:48,449 INFO L93 Difference]: Finished difference Result 5565 states and 18683 transitions. [2021-06-12 22:42:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:42:48,449 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:48,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:48,458 INFO L225 Difference]: With dead ends: 5565 [2021-06-12 22:42:48,458 INFO L226 Difference]: Without dead ends: 5510 [2021-06-12 22:42:48,458 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 703.7ms TimeCoverageRelationStatistics Valid=226, Invalid=2126, Unknown=0, NotChecked=0, Total=2352 [2021-06-12 22:42:48,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5510 states. [2021-06-12 22:42:48,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5510 to 5259. [2021-06-12 22:42:48,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5259 states, 5258 states have (on average 3.3851274248763787) internal successors, (17799), 5258 states have internal predecessors, (17799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5259 states to 5259 states and 17799 transitions. [2021-06-12 22:42:48,529 INFO L78 Accepts]: Start accepts. Automaton has 5259 states and 17799 transitions. Word has length 39 [2021-06-12 22:42:48,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:48,529 INFO L482 AbstractCegarLoop]: Abstraction has 5259 states and 17799 transitions. [2021-06-12 22:42:48,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:48,529 INFO L276 IsEmpty]: Start isEmpty. Operand 5259 states and 17799 transitions. [2021-06-12 22:42:48,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:48,535 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:48,535 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:48,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-06-12 22:42:48,535 INFO L430 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:48,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:48,535 INFO L82 PathProgramCache]: Analyzing trace with hash 480088460, now seen corresponding path program 348 times [2021-06-12 22:42:48,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:48,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765422310] [2021-06-12 22:42:48,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:48,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:48,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765422310] [2021-06-12 22:42:48,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765422310] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:48,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:48,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:48,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604142253] [2021-06-12 22:42:48,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:48,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:48,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:48,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:48,711 INFO L87 Difference]: Start difference. First operand 5259 states and 17799 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:49,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:49,795 INFO L93 Difference]: Finished difference Result 5541 states and 18613 transitions. [2021-06-12 22:42:49,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:42:49,796 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:49,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:49,805 INFO L225 Difference]: With dead ends: 5541 [2021-06-12 22:42:49,805 INFO L226 Difference]: Without dead ends: 5498 [2021-06-12 22:42:49,805 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 681.2ms TimeCoverageRelationStatistics Valid=204, Invalid=1958, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:42:49,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5498 states. [2021-06-12 22:42:49,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5498 to 5265. [2021-06-12 22:42:49,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 5264 states have (on average 3.3837386018237083) internal successors, (17812), 5264 states have internal predecessors, (17812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:49,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 17812 transitions. [2021-06-12 22:42:49,880 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 17812 transitions. Word has length 39 [2021-06-12 22:42:49,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:49,880 INFO L482 AbstractCegarLoop]: Abstraction has 5265 states and 17812 transitions. [2021-06-12 22:42:49,880 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:49,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 17812 transitions. [2021-06-12 22:42:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:49,887 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:49,887 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:49,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-06-12 22:42:49,887 INFO L430 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:49,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:49,887 INFO L82 PathProgramCache]: Analyzing trace with hash 208668910, now seen corresponding path program 349 times [2021-06-12 22:42:49,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:49,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609538009] [2021-06-12 22:42:49,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:50,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:50,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609538009] [2021-06-12 22:42:50,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609538009] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:50,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:50,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:50,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207118684] [2021-06-12 22:42:50,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:50,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:50,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:50,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:50,060 INFO L87 Difference]: Start difference. First operand 5265 states and 17812 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:51,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:51,135 INFO L93 Difference]: Finished difference Result 5496 states and 18509 transitions. [2021-06-12 22:42:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:42:51,135 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:51,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:51,143 INFO L225 Difference]: With dead ends: 5496 [2021-06-12 22:42:51,143 INFO L226 Difference]: Without dead ends: 5405 [2021-06-12 22:42:51,143 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 679.6ms TimeCoverageRelationStatistics Valid=204, Invalid=1958, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:42:51,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5405 states. [2021-06-12 22:42:51,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5405 to 5235. [2021-06-12 22:42:51,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 5234 states have (on average 3.388803974016049) internal successors, (17737), 5234 states have internal predecessors, (17737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:51,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 17737 transitions. [2021-06-12 22:42:51,207 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 17737 transitions. Word has length 39 [2021-06-12 22:42:51,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:51,207 INFO L482 AbstractCegarLoop]: Abstraction has 5235 states and 17737 transitions. [2021-06-12 22:42:51,207 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:51,207 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 17737 transitions. [2021-06-12 22:42:51,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:51,213 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:51,213 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:51,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-06-12 22:42:51,213 INFO L430 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:51,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:51,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1174590756, now seen corresponding path program 350 times [2021-06-12 22:42:51,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:51,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368183426] [2021-06-12 22:42:51,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:51,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:51,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368183426] [2021-06-12 22:42:51,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368183426] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:51,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:51,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:51,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563792813] [2021-06-12 22:42:51,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:51,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:51,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:51,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:51,397 INFO L87 Difference]: Start difference. First operand 5235 states and 17737 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:53,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:53,324 INFO L93 Difference]: Finished difference Result 7596 states and 25341 transitions. [2021-06-12 22:42:53,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-12 22:42:53,325 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:53,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:53,335 INFO L225 Difference]: With dead ends: 7596 [2021-06-12 22:42:53,335 INFO L226 Difference]: Without dead ends: 7541 [2021-06-12 22:42:53,336 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1395 ImplicationChecksByTransitivity, 1193.6ms TimeCoverageRelationStatistics Valid=433, Invalid=4537, Unknown=0, NotChecked=0, Total=4970 [2021-06-12 22:42:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7541 states. [2021-06-12 22:42:53,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7541 to 5254. [2021-06-12 22:42:53,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5254 states, 5253 states have (on average 3.3893013516086046) internal successors, (17804), 5253 states have internal predecessors, (17804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 17804 transitions. [2021-06-12 22:42:53,412 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 17804 transitions. Word has length 39 [2021-06-12 22:42:53,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:53,412 INFO L482 AbstractCegarLoop]: Abstraction has 5254 states and 17804 transitions. [2021-06-12 22:42:53,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:53,412 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 17804 transitions. [2021-06-12 22:42:53,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:53,417 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:53,418 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:53,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-06-12 22:42:53,418 INFO L430 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:53,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:53,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1938534, now seen corresponding path program 351 times [2021-06-12 22:42:53,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:53,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100410492] [2021-06-12 22:42:53,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:53,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:53,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100410492] [2021-06-12 22:42:53,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100410492] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:53,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:53,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:53,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058559002] [2021-06-12 22:42:53,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:53,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:53,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:53,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:53,587 INFO L87 Difference]: Start difference. First operand 5254 states and 17804 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:55,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:55,700 INFO L93 Difference]: Finished difference Result 8366 states and 27938 transitions. [2021-06-12 22:42:55,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-12 22:42:55,700 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:55,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:55,712 INFO L225 Difference]: With dead ends: 8366 [2021-06-12 22:42:55,712 INFO L226 Difference]: Without dead ends: 8243 [2021-06-12 22:42:55,713 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 1273.8ms TimeCoverageRelationStatistics Valid=480, Invalid=5372, Unknown=0, NotChecked=0, Total=5852 [2021-06-12 22:42:55,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8243 states. [2021-06-12 22:42:55,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8243 to 5258. [2021-06-12 22:42:55,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5258 states, 5257 states have (on average 3.3897660262507134) internal successors, (17820), 5257 states have internal predecessors, (17820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:55,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5258 states to 5258 states and 17820 transitions. [2021-06-12 22:42:55,793 INFO L78 Accepts]: Start accepts. Automaton has 5258 states and 17820 transitions. Word has length 39 [2021-06-12 22:42:55,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:55,793 INFO L482 AbstractCegarLoop]: Abstraction has 5258 states and 17820 transitions. [2021-06-12 22:42:55,793 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) [2021-06-12 22:42:55,793 INFO L276 IsEmpty]: Start isEmpty. Operand 5258 states and 17820 transitions. [2021-06-12 22:42:55,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:55,798 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:55,798 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:55,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-06-12 22:42:55,798 INFO L430 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:55,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:55,799 INFO L82 PathProgramCache]: Analyzing trace with hash -978864728, now seen corresponding path program 352 times [2021-06-12 22:42:55,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:55,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701851284] [2021-06-12 22:42:55,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:55,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:55,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:55,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701851284] [2021-06-12 22:42:55,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701851284] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:55,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:55,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:55,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071962275] [2021-06-12 22:42:55,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:55,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:55,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:55,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:55,971 INFO L87 Difference]: Start difference. First operand 5258 states and 17820 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:57,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:42:57,705 INFO L93 Difference]: Finished difference Result 7513 states and 25139 transitions. [2021-06-12 22:42:57,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-12 22:42:57,705 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:42:57,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:42:57,716 INFO L225 Difference]: With dead ends: 7513 [2021-06-12 22:42:57,717 INFO L226 Difference]: Without dead ends: 7422 [2021-06-12 22:42:57,717 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 1022.4ms TimeCoverageRelationStatistics Valid=374, Invalid=3916, Unknown=0, NotChecked=0, Total=4290 [2021-06-12 22:42:57,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7422 states. [2021-06-12 22:42:57,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7422 to 5264. [2021-06-12 22:42:57,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5264 states, 5263 states have (on average 3.3876116283488504) internal successors, (17829), 5263 states have internal predecessors, (17829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:57,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 17829 transitions. [2021-06-12 22:42:57,797 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 17829 transitions. Word has length 39 [2021-06-12 22:42:57,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:42:57,797 INFO L482 AbstractCegarLoop]: Abstraction has 5264 states and 17829 transitions. [2021-06-12 22:42:57,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:42:57,797 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 17829 transitions. [2021-06-12 22:42:57,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:42:57,803 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:42:57,803 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:42:57,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-06-12 22:42:57,803 INFO L430 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:42:57,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:42:57,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1813620362, now seen corresponding path program 353 times [2021-06-12 22:42:57,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:42:57,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405862329] [2021-06-12 22:42:57,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:42:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:42:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:42:57,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:42:57,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405862329] [2021-06-12 22:42:57,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405862329] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:42:57,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:42:57,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:42:57,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473681151] [2021-06-12 22:42:57,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:42:57,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:42:57,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:42:57,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:42:57,974 INFO L87 Difference]: Start difference. First operand 5264 states and 17829 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:00,033 INFO L93 Difference]: Finished difference Result 8372 states and 28036 transitions. [2021-06-12 22:43:00,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-12 22:43:00,033 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:00,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:00,046 INFO L225 Difference]: With dead ends: 8372 [2021-06-12 22:43:00,047 INFO L226 Difference]: Without dead ends: 8272 [2021-06-12 22:43:00,047 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 1147.1ms TimeCoverageRelationStatistics Valid=409, Invalid=4561, Unknown=0, NotChecked=0, Total=4970 [2021-06-12 22:43:00,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8272 states. [2021-06-12 22:43:00,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8272 to 5252. [2021-06-12 22:43:00,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5252 states, 5251 states have (on average 3.3877356693963057) internal successors, (17789), 5251 states have internal predecessors, (17789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:00,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 17789 transitions. [2021-06-12 22:43:00,159 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 17789 transitions. Word has length 39 [2021-06-12 22:43:00,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:00,159 INFO L482 AbstractCegarLoop]: Abstraction has 5252 states and 17789 transitions. [2021-06-12 22:43:00,159 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:00,159 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 17789 transitions. [2021-06-12 22:43:00,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:00,165 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:00,165 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:00,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-06-12 22:43:00,165 INFO L430 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:00,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:00,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1306476194, now seen corresponding path program 354 times [2021-06-12 22:43:00,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:00,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618189237] [2021-06-12 22:43:00,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:00,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:00,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:00,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618189237] [2021-06-12 22:43:00,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618189237] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:00,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:00,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:00,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092281869] [2021-06-12 22:43:00,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:00,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:00,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:00,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:00,339 INFO L87 Difference]: Start difference. First operand 5252 states and 17789 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:01,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:01,800 INFO L93 Difference]: Finished difference Result 5678 states and 18934 transitions. [2021-06-12 22:43:01,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-12 22:43:01,800 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:01,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:01,809 INFO L225 Difference]: With dead ends: 5678 [2021-06-12 22:43:01,809 INFO L226 Difference]: Without dead ends: 5623 [2021-06-12 22:43:01,810 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 979.4ms TimeCoverageRelationStatistics Valid=318, Invalid=3104, Unknown=0, NotChecked=0, Total=3422 [2021-06-12 22:43:01,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5623 states. [2021-06-12 22:43:01,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5623 to 5262. [2021-06-12 22:43:01,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5262 states, 5261 states have (on average 3.3856681239308117) internal successors, (17812), 5261 states have internal predecessors, (17812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:01,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5262 states to 5262 states and 17812 transitions. [2021-06-12 22:43:01,881 INFO L78 Accepts]: Start accepts. Automaton has 5262 states and 17812 transitions. Word has length 39 [2021-06-12 22:43:01,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:01,881 INFO L482 AbstractCegarLoop]: Abstraction has 5262 states and 17812 transitions. [2021-06-12 22:43:01,881 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) [2021-06-12 22:43:01,881 INFO L276 IsEmpty]: Start isEmpty. Operand 5262 states and 17812 transitions. [2021-06-12 22:43:01,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:01,914 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:01,914 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:01,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-06-12 22:43:01,914 INFO L430 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:01,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:01,914 INFO L82 PathProgramCache]: Analyzing trace with hash -133823972, now seen corresponding path program 355 times [2021-06-12 22:43:01,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:01,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397511264] [2021-06-12 22:43:01,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:02,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:02,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397511264] [2021-06-12 22:43:02,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397511264] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:02,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:02,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:02,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439175761] [2021-06-12 22:43:02,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:02,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:02,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:02,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:02,087 INFO L87 Difference]: Start difference. First operand 5262 states and 17812 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:03,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:03,462 INFO L93 Difference]: Finished difference Result 5636 states and 18835 transitions. [2021-06-12 22:43:03,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-12 22:43:03,463 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:03,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:03,471 INFO L225 Difference]: With dead ends: 5636 [2021-06-12 22:43:03,471 INFO L226 Difference]: Without dead ends: 5576 [2021-06-12 22:43:03,472 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 944.7ms TimeCoverageRelationStatistics Valid=298, Invalid=2782, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:43:03,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5576 states. [2021-06-12 22:43:03,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5576 to 5268. [2021-06-12 22:43:03,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5268 states, 5267 states have (on average 3.384849060186064) internal successors, (17828), 5267 states have internal predecessors, (17828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:03,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5268 states to 5268 states and 17828 transitions. [2021-06-12 22:43:03,537 INFO L78 Accepts]: Start accepts. Automaton has 5268 states and 17828 transitions. Word has length 39 [2021-06-12 22:43:03,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:03,537 INFO L482 AbstractCegarLoop]: Abstraction has 5268 states and 17828 transitions. [2021-06-12 22:43:03,537 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:03,537 INFO L276 IsEmpty]: Start isEmpty. Operand 5268 states and 17828 transitions. [2021-06-12 22:43:03,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:03,542 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:03,542 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:03,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-06-12 22:43:03,542 INFO L430 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:03,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:03,543 INFO L82 PathProgramCache]: Analyzing trace with hash -201568852, now seen corresponding path program 356 times [2021-06-12 22:43:03,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:03,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933483738] [2021-06-12 22:43:03,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:03,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:03,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:03,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933483738] [2021-06-12 22:43:03,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933483738] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:03,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:03,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:03,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687825538] [2021-06-12 22:43:03,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:03,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:03,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:03,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:03,737 INFO L87 Difference]: Start difference. First operand 5268 states and 17828 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:05,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:05,024 INFO L93 Difference]: Finished difference Result 5607 states and 18754 transitions. [2021-06-12 22:43:05,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-12 22:43:05,024 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:05,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:05,032 INFO L225 Difference]: With dead ends: 5607 [2021-06-12 22:43:05,032 INFO L226 Difference]: Without dead ends: 5564 [2021-06-12 22:43:05,033 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 853.9ms TimeCoverageRelationStatistics Valid=267, Invalid=2595, Unknown=0, NotChecked=0, Total=2862 [2021-06-12 22:43:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5564 states. [2021-06-12 22:43:05,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5564 to 5274. [2021-06-12 22:43:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5274 states, 5273 states have (on average 3.3834629243315) internal successors, (17841), 5273 states have internal predecessors, (17841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:05,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 17841 transitions. [2021-06-12 22:43:05,097 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 17841 transitions. Word has length 39 [2021-06-12 22:43:05,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:05,097 INFO L482 AbstractCegarLoop]: Abstraction has 5274 states and 17841 transitions. [2021-06-12 22:43:05,097 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) [2021-06-12 22:43:05,097 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 17841 transitions. [2021-06-12 22:43:05,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:05,102 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:05,102 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:05,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-06-12 22:43:05,103 INFO L430 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:05,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:05,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1548538284, now seen corresponding path program 357 times [2021-06-12 22:43:05,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:05,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209805297] [2021-06-12 22:43:05,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:05,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:05,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:05,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209805297] [2021-06-12 22:43:05,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209805297] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:05,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:05,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:05,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371468091] [2021-06-12 22:43:05,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:05,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:05,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:05,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:05,276 INFO L87 Difference]: Start difference. First operand 5274 states and 17841 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:06,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:06,494 INFO L93 Difference]: Finished difference Result 5613 states and 18771 transitions. [2021-06-12 22:43:06,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-12 22:43:06,494 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:06,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:06,502 INFO L225 Difference]: With dead ends: 5613 [2021-06-12 22:43:06,502 INFO L226 Difference]: Without dead ends: 5562 [2021-06-12 22:43:06,503 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 782.6ms TimeCoverageRelationStatistics Valid=251, Invalid=2401, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:43:06,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2021-06-12 22:43:06,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 5274. [2021-06-12 22:43:06,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5274 states, 5273 states have (on average 3.3828939882419875) internal successors, (17838), 5273 states have internal predecessors, (17838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:06,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 17838 transitions. [2021-06-12 22:43:06,569 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 17838 transitions. Word has length 39 [2021-06-12 22:43:06,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:06,569 INFO L482 AbstractCegarLoop]: Abstraction has 5274 states and 17838 transitions. [2021-06-12 22:43:06,569 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:06,569 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 17838 transitions. [2021-06-12 22:43:06,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:06,575 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:06,575 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:06,575 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-06-12 22:43:06,575 INFO L430 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:06,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:06,575 INFO L82 PathProgramCache]: Analyzing trace with hash -2129210610, now seen corresponding path program 358 times [2021-06-12 22:43:06,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:06,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980348793] [2021-06-12 22:43:06,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:06,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:06,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980348793] [2021-06-12 22:43:06,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980348793] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:06,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:06,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:06,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698026738] [2021-06-12 22:43:06,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:06,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:06,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:06,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:06,752 INFO L87 Difference]: Start difference. First operand 5274 states and 17838 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:08,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:08,072 INFO L93 Difference]: Finished difference Result 5609 states and 18750 transitions. [2021-06-12 22:43:08,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-12 22:43:08,072 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:08,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:08,080 INFO L225 Difference]: With dead ends: 5609 [2021-06-12 22:43:08,080 INFO L226 Difference]: Without dead ends: 5563 [2021-06-12 22:43:08,081 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 859.3ms TimeCoverageRelationStatistics Valid=262, Invalid=2494, Unknown=0, NotChecked=0, Total=2756 [2021-06-12 22:43:08,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5563 states. [2021-06-12 22:43:08,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 5281. [2021-06-12 22:43:08,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 5280 states have (on average 3.38125) internal successors, (17853), 5280 states have internal predecessors, (17853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:08,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 17853 transitions. [2021-06-12 22:43:08,146 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 17853 transitions. Word has length 39 [2021-06-12 22:43:08,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:08,146 INFO L482 AbstractCegarLoop]: Abstraction has 5281 states and 17853 transitions. [2021-06-12 22:43:08,146 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:08,146 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 17853 transitions. [2021-06-12 22:43:08,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:08,152 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:08,152 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:08,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-06-12 22:43:08,152 INFO L430 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:08,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:08,152 INFO L82 PathProgramCache]: Analyzing trace with hash 730689196, now seen corresponding path program 359 times [2021-06-12 22:43:08,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:08,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276002468] [2021-06-12 22:43:08,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:08,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:08,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:08,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276002468] [2021-06-12 22:43:08,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276002468] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:08,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:08,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:08,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86779008] [2021-06-12 22:43:08,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:08,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:08,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:08,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:08,323 INFO L87 Difference]: Start difference. First operand 5281 states and 17853 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:09,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:09,515 INFO L93 Difference]: Finished difference Result 5599 states and 18724 transitions. [2021-06-12 22:43:09,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-12 22:43:09,516 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:09,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:09,524 INFO L225 Difference]: With dead ends: 5599 [2021-06-12 22:43:09,524 INFO L226 Difference]: Without dead ends: 5544 [2021-06-12 22:43:09,524 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 788.8ms TimeCoverageRelationStatistics Valid=251, Invalid=2401, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:43:09,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5544 states. [2021-06-12 22:43:09,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5544 to 5278. [2021-06-12 22:43:09,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 3.3820352472996023) internal successors, (17847), 5277 states have internal predecessors, (17847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:09,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 17847 transitions. [2021-06-12 22:43:09,589 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 17847 transitions. Word has length 39 [2021-06-12 22:43:09,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:09,589 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 17847 transitions. [2021-06-12 22:43:09,590 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) [2021-06-12 22:43:09,590 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 17847 transitions. [2021-06-12 22:43:09,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:09,596 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:09,596 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:09,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-06-12 22:43:09,596 INFO L430 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:09,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:09,596 INFO L82 PathProgramCache]: Analyzing trace with hash -552013922, now seen corresponding path program 360 times [2021-06-12 22:43:09,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:09,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656596859] [2021-06-12 22:43:09,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:09,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:09,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656596859] [2021-06-12 22:43:09,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656596859] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:09,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:09,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:09,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243737119] [2021-06-12 22:43:09,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:09,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:09,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:09,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:09,785 INFO L87 Difference]: Start difference. First operand 5278 states and 17847 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:11,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:11,020 INFO L93 Difference]: Finished difference Result 5652 states and 18840 transitions. [2021-06-12 22:43:11,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-12 22:43:11,021 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:11,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:11,029 INFO L225 Difference]: With dead ends: 5652 [2021-06-12 22:43:11,029 INFO L226 Difference]: Without dead ends: 5595 [2021-06-12 22:43:11,030 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 827.8ms TimeCoverageRelationStatistics Valid=270, Invalid=2592, Unknown=0, NotChecked=0, Total=2862 [2021-06-12 22:43:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2021-06-12 22:43:11,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 5278. [2021-06-12 22:43:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 5277 states have (on average 3.3818457456888384) internal successors, (17846), 5277 states have internal predecessors, (17846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:11,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 17846 transitions. [2021-06-12 22:43:11,125 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 17846 transitions. Word has length 39 [2021-06-12 22:43:11,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:11,125 INFO L482 AbstractCegarLoop]: Abstraction has 5278 states and 17846 transitions. [2021-06-12 22:43:11,125 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:11,125 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 17846 transitions. [2021-06-12 22:43:11,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:11,130 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:11,130 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:11,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-06-12 22:43:11,130 INFO L430 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:11,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:11,131 INFO L82 PathProgramCache]: Analyzing trace with hash 2025475194, now seen corresponding path program 361 times [2021-06-12 22:43:11,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:11,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513166345] [2021-06-12 22:43:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:11,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:11,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513166345] [2021-06-12 22:43:11,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513166345] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:11,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:11,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:11,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789611094] [2021-06-12 22:43:11,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:11,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:11,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:11,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:11,304 INFO L87 Difference]: Start difference. First operand 5278 states and 17846 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:12,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:12,572 INFO L93 Difference]: Finished difference Result 5653 states and 18841 transitions. [2021-06-12 22:43:12,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-12 22:43:12,572 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:12,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:12,581 INFO L225 Difference]: With dead ends: 5653 [2021-06-12 22:43:12,581 INFO L226 Difference]: Without dead ends: 5594 [2021-06-12 22:43:12,581 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 845.4ms TimeCoverageRelationStatistics Valid=272, Invalid=2590, Unknown=0, NotChecked=0, Total=2862 [2021-06-12 22:43:12,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2021-06-12 22:43:12,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 5277. [2021-06-12 22:43:12,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5277 states, 5276 states have (on average 3.3821076573161486) internal successors, (17844), 5276 states have internal predecessors, (17844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 17844 transitions. [2021-06-12 22:43:12,648 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 17844 transitions. Word has length 39 [2021-06-12 22:43:12,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:12,648 INFO L482 AbstractCegarLoop]: Abstraction has 5277 states and 17844 transitions. [2021-06-12 22:43:12,648 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:12,648 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 17844 transitions. [2021-06-12 22:43:12,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:12,655 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:12,655 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:12,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-06-12 22:43:12,655 INFO L430 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:12,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:12,655 INFO L82 PathProgramCache]: Analyzing trace with hash 786742666, now seen corresponding path program 362 times [2021-06-12 22:43:12,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:12,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033439803] [2021-06-12 22:43:12,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:12,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:12,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033439803] [2021-06-12 22:43:12,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033439803] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:12,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:12,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:12,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178762010] [2021-06-12 22:43:12,828 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:12,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:12,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:12,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:12,828 INFO L87 Difference]: Start difference. First operand 5277 states and 17844 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:13,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:13,989 INFO L93 Difference]: Finished difference Result 5561 states and 18637 transitions. [2021-06-12 22:43:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:43:13,989 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:13,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:13,998 INFO L225 Difference]: With dead ends: 5561 [2021-06-12 22:43:13,998 INFO L226 Difference]: Without dead ends: 5486 [2021-06-12 22:43:13,998 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 737.3ms TimeCoverageRelationStatistics Valid=237, Invalid=2313, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:43:14,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5486 states. [2021-06-12 22:43:14,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5486 to 5263. [2021-06-12 22:43:14,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5262 states have (on average 3.3842645381984036) internal successors, (17808), 5262 states have internal predecessors, (17808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:14,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 17808 transitions. [2021-06-12 22:43:14,064 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 17808 transitions. Word has length 39 [2021-06-12 22:43:14,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:14,064 INFO L482 AbstractCegarLoop]: Abstraction has 5263 states and 17808 transitions. [2021-06-12 22:43:14,064 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:14,064 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 17808 transitions. [2021-06-12 22:43:14,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:14,070 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:14,070 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:14,070 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-06-12 22:43:14,070 INFO L430 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:14,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:14,070 INFO L82 PathProgramCache]: Analyzing trace with hash 950489482, now seen corresponding path program 363 times [2021-06-12 22:43:14,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:14,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395404389] [2021-06-12 22:43:14,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:14,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:14,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395404389] [2021-06-12 22:43:14,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395404389] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:14,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:14,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:14,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813789010] [2021-06-12 22:43:14,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:14,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:14,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:14,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:14,250 INFO L87 Difference]: Start difference. First operand 5263 states and 17808 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:15,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:15,385 INFO L93 Difference]: Finished difference Result 5480 states and 18458 transitions. [2021-06-12 22:43:15,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-12 22:43:15,386 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:15,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:15,394 INFO L225 Difference]: With dead ends: 5480 [2021-06-12 22:43:15,394 INFO L226 Difference]: Without dead ends: 5393 [2021-06-12 22:43:15,394 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 734.8ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:43:15,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2021-06-12 22:43:15,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 5237. [2021-06-12 22:43:15,452 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) [2021-06-12 22:43:15,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 17747 transitions. [2021-06-12 22:43:15,460 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 17747 transitions. Word has length 39 [2021-06-12 22:43:15,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:15,460 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 17747 transitions. [2021-06-12 22:43:15,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:15,460 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 17747 transitions. [2021-06-12 22:43:15,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:15,466 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:15,466 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:15,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-06-12 22:43:15,466 INFO L430 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:15,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:15,466 INFO L82 PathProgramCache]: Analyzing trace with hash -562346440, now seen corresponding path program 364 times [2021-06-12 22:43:15,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:15,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813278275] [2021-06-12 22:43:15,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:15,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:15,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:15,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813278275] [2021-06-12 22:43:15,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813278275] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:15,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:15,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:15,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851070329] [2021-06-12 22:43:15,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:15,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:15,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:15,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:15,641 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) [2021-06-12 22:43:17,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:17,298 INFO L93 Difference]: Finished difference Result 5863 states and 19501 transitions. [2021-06-12 22:43:17,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-12 22:43:17,298 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 [2021-06-12 22:43:17,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:17,306 INFO L225 Difference]: With dead ends: 5863 [2021-06-12 22:43:17,307 INFO L226 Difference]: Without dead ends: 5799 [2021-06-12 22:43:17,307 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 1084.1ms TimeCoverageRelationStatistics Valid=349, Invalid=3811, Unknown=0, NotChecked=0, Total=4160 [2021-06-12 22:43:17,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2021-06-12 22:43:17,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 5241. [2021-06-12 22:43:17,366 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) [2021-06-12 22:43:17,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 17757 transitions. [2021-06-12 22:43:17,375 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 17757 transitions. Word has length 39 [2021-06-12 22:43:17,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:17,375 INFO L482 AbstractCegarLoop]: Abstraction has 5241 states and 17757 transitions. [2021-06-12 22:43:17,375 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) [2021-06-12 22:43:17,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 17757 transitions. [2021-06-12 22:43:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:17,381 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:17,381 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:17,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-06-12 22:43:17,381 INFO L430 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:17,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:17,381 INFO L82 PathProgramCache]: Analyzing trace with hash 356137130, now seen corresponding path program 365 times [2021-06-12 22:43:17,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:17,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708351157] [2021-06-12 22:43:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:17,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:17,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708351157] [2021-06-12 22:43:17,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708351157] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:17,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:17,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:17,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269864038] [2021-06-12 22:43:17,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:17,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:17,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:17,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:17,555 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) [2021-06-12 22:43:18,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:18,659 INFO L93 Difference]: Finished difference Result 5680 states and 18997 transitions. [2021-06-12 22:43:18,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:43:18,659 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:18,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:18,667 INFO L225 Difference]: With dead ends: 5680 [2021-06-12 22:43:18,668 INFO L226 Difference]: Without dead ends: 5637 [2021-06-12 22:43:18,668 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 695.6ms TimeCoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2021-06-12 22:43:18,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5637 states. [2021-06-12 22:43:18,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5637 to 5247. [2021-06-12 22:43:18,724 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) [2021-06-12 22:43:18,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 17770 transitions. [2021-06-12 22:43:18,732 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 17770 transitions. Word has length 39 [2021-06-12 22:43:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:18,732 INFO L482 AbstractCegarLoop]: Abstraction has 5247 states and 17770 transitions. [2021-06-12 22:43:18,732 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) [2021-06-12 22:43:18,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 17770 transitions. [2021-06-12 22:43:18,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:18,738 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:18,738 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:18,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-06-12 22:43:18,738 INFO L430 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:18,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:18,738 INFO L82 PathProgramCache]: Analyzing trace with hash 376285864, now seen corresponding path program 366 times [2021-06-12 22:43:18,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:18,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185716452] [2021-06-12 22:43:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:18,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:18,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:18,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185716452] [2021-06-12 22:43:18,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185716452] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:18,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:18,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:18,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078076841] [2021-06-12 22:43:18,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:18,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:18,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:18,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:18,912 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) [2021-06-12 22:43:20,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:20,026 INFO L93 Difference]: Finished difference Result 5643 states and 18915 transitions. [2021-06-12 22:43:20,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:43:20,026 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:20,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:20,035 INFO L225 Difference]: With dead ends: 5643 [2021-06-12 22:43:20,035 INFO L226 Difference]: Without dead ends: 5600 [2021-06-12 22:43:20,035 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 716.5ms TimeCoverageRelationStatistics Valid=226, Invalid=2126, Unknown=0, NotChecked=0, Total=2352 [2021-06-12 22:43:20,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5600 states. [2021-06-12 22:43:20,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5600 to 5243. [2021-06-12 22:43:20,091 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) [2021-06-12 22:43:20,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 17760 transitions. [2021-06-12 22:43:20,100 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 17760 transitions. Word has length 39 [2021-06-12 22:43:20,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:20,100 INFO L482 AbstractCegarLoop]: Abstraction has 5243 states and 17760 transitions. [2021-06-12 22:43:20,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:20,101 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 17760 transitions. [2021-06-12 22:43:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:20,107 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:20,107 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:20,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-06-12 22:43:20,107 INFO L430 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:20,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:20,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1528789352, now seen corresponding path program 367 times [2021-06-12 22:43:20,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:20,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829394690] [2021-06-12 22:43:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:20,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:20,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829394690] [2021-06-12 22:43:20,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829394690] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:20,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:20,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:20,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429054979] [2021-06-12 22:43:20,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:20,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:20,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:20,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:20,308 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) [2021-06-12 22:43:21,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:21,569 INFO L93 Difference]: Finished difference Result 5714 states and 19112 transitions. [2021-06-12 22:43:21,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-12 22:43:21,569 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 [2021-06-12 22:43:21,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:21,578 INFO L225 Difference]: With dead ends: 5714 [2021-06-12 22:43:21,578 INFO L226 Difference]: Without dead ends: 5654 [2021-06-12 22:43:21,578 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 827.5ms TimeCoverageRelationStatistics Valid=257, Invalid=2499, Unknown=0, NotChecked=0, Total=2756 [2021-06-12 22:43:21,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2021-06-12 22:43:21,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 5237. [2021-06-12 22:43:21,639 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) [2021-06-12 22:43:21,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 17747 transitions. [2021-06-12 22:43:21,647 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 17747 transitions. Word has length 39 [2021-06-12 22:43:21,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:21,647 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 17747 transitions. [2021-06-12 22:43:21,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:21,647 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 17747 transitions. [2021-06-12 22:43:21,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:21,653 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:21,653 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:21,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-06-12 22:43:21,653 INFO L430 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:21,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:21,653 INFO L82 PathProgramCache]: Analyzing trace with hash -550777190, now seen corresponding path program 368 times [2021-06-12 22:43:21,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:21,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411373840] [2021-06-12 22:43:21,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:21,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:21,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411373840] [2021-06-12 22:43:21,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411373840] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:21,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:21,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:43:21,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983686934] [2021-06-12 22:43:21,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:43:21,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:21,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:43:21,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:43:21,841 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) [2021-06-12 22:43:22,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:22,950 INFO L93 Difference]: Finished difference Result 5682 states and 19052 transitions. [2021-06-12 22:43:22,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:43:22,950 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 [2021-06-12 22:43:22,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:22,959 INFO L225 Difference]: With dead ends: 5682 [2021-06-12 22:43:22,959 INFO L226 Difference]: Without dead ends: 5606 [2021-06-12 22:43:22,959 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 697.7ms TimeCoverageRelationStatistics Valid=214, Invalid=2042, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:43:22,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5606 states. [2021-06-12 22:43:23,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5606 to 5249. [2021-06-12 22:43:23,019 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) [2021-06-12 22:43:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 17771 transitions. [2021-06-12 22:43:23,027 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 17771 transitions. Word has length 39 [2021-06-12 22:43:23,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:23,027 INFO L482 AbstractCegarLoop]: Abstraction has 5249 states and 17771 transitions. [2021-06-12 22:43:23,027 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) [2021-06-12 22:43:23,027 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 17771 transitions. [2021-06-12 22:43:23,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:23,033 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:23,033 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:23,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-06-12 22:43:23,033 INFO L430 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:23,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:23,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1568830802, now seen corresponding path program 369 times [2021-06-12 22:43:23,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:23,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869755947] [2021-06-12 22:43:23,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:23,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:23,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869755947] [2021-06-12 22:43:23,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869755947] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:23,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:23,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:23,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617798688] [2021-06-12 22:43:23,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:23,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:23,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:23,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:23,208 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) [2021-06-12 22:43:24,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:24,378 INFO L93 Difference]: Finished difference Result 5664 states and 18998 transitions. [2021-06-12 22:43:24,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:43:24,378 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:24,386 INFO L225 Difference]: With dead ends: 5664 [2021-06-12 22:43:24,386 INFO L226 Difference]: Without dead ends: 5594 [2021-06-12 22:43:24,387 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 731.4ms TimeCoverageRelationStatistics Valid=233, Invalid=2317, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:43:24,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2021-06-12 22:43:24,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 5237. [2021-06-12 22:43:24,442 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) [2021-06-12 22:43:24,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 17743 transitions. [2021-06-12 22:43:24,450 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 17743 transitions. Word has length 39 [2021-06-12 22:43:24,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:24,450 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 17743 transitions. [2021-06-12 22:43:24,450 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:24,450 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 17743 transitions. [2021-06-12 22:43:24,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:24,455 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:24,455 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:24,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-06-12 22:43:24,455 INFO L430 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:24,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:24,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1422348750, now seen corresponding path program 370 times [2021-06-12 22:43:24,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:24,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291644397] [2021-06-12 22:43:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:24,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:24,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:24,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291644397] [2021-06-12 22:43:24,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291644397] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:24,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:24,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:24,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338064801] [2021-06-12 22:43:24,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:24,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:24,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:24,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:24,628 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) [2021-06-12 22:43:26,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:26,776 INFO L93 Difference]: Finished difference Result 8130 states and 27321 transitions. [2021-06-12 22:43:26,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-12 22:43:26,776 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:26,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:26,788 INFO L225 Difference]: With dead ends: 8130 [2021-06-12 22:43:26,789 INFO L226 Difference]: Without dead ends: 8024 [2021-06-12 22:43:26,789 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1649 ImplicationChecksByTransitivity, 1285.8ms TimeCoverageRelationStatistics Valid=457, Invalid=5243, Unknown=0, NotChecked=0, Total=5700 [2021-06-12 22:43:26,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8024 states. [2021-06-12 22:43:26,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8024 to 5290. [2021-06-12 22:43:26,861 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) [2021-06-12 22:43:26,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 17925 transitions. [2021-06-12 22:43:26,869 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 17925 transitions. Word has length 39 [2021-06-12 22:43:26,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:26,869 INFO L482 AbstractCegarLoop]: Abstraction has 5290 states and 17925 transitions. [2021-06-12 22:43:26,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:26,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 17925 transitions. [2021-06-12 22:43:26,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:26,875 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:26,875 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:26,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-06-12 22:43:26,875 INFO L430 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:26,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:26,875 INFO L82 PathProgramCache]: Analyzing trace with hash -358249552, now seen corresponding path program 371 times [2021-06-12 22:43:26,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:26,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036178276] [2021-06-12 22:43:26,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:27,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:27,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:27,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036178276] [2021-06-12 22:43:27,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036178276] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:27,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:27,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:27,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460998709] [2021-06-12 22:43:27,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:27,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:27,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:27,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:27,046 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) [2021-06-12 22:43:29,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:29,525 INFO L93 Difference]: Finished difference Result 8948 states and 30175 transitions. [2021-06-12 22:43:29,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-12 22:43:29,525 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:29,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:29,539 INFO L225 Difference]: With dead ends: 8948 [2021-06-12 22:43:29,539 INFO L226 Difference]: Without dead ends: 8896 [2021-06-12 22:43:29,540 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2071 ImplicationChecksByTransitivity, 1461.7ms TimeCoverageRelationStatistics Valid=513, Invalid=6293, Unknown=0, NotChecked=0, Total=6806 [2021-06-12 22:43:29,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8896 states. [2021-06-12 22:43:29,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8896 to 5264. [2021-06-12 22:43:29,619 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) [2021-06-12 22:43:29,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 17842 transitions. [2021-06-12 22:43:29,661 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 17842 transitions. Word has length 39 [2021-06-12 22:43:29,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:29,661 INFO L482 AbstractCegarLoop]: Abstraction has 5264 states and 17842 transitions. [2021-06-12 22:43:29,661 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) [2021-06-12 22:43:29,661 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 17842 transitions. [2021-06-12 22:43:29,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:29,668 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:29,668 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:29,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-06-12 22:43:29,668 INFO L430 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:29,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:29,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1954134976, now seen corresponding path program 372 times [2021-06-12 22:43:29,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:29,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978827687] [2021-06-12 22:43:29,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:29,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:29,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978827687] [2021-06-12 22:43:29,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978827687] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:29,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:29,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:29,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401940643] [2021-06-12 22:43:29,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:29,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:29,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:29,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:29,844 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) [2021-06-12 22:43:31,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:31,238 INFO L93 Difference]: Finished difference Result 7462 states and 24986 transitions. [2021-06-12 22:43:31,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-12 22:43:31,239 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:31,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:31,250 INFO L225 Difference]: With dead ends: 7462 [2021-06-12 22:43:31,250 INFO L226 Difference]: Without dead ends: 7407 [2021-06-12 22:43:31,250 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 777.3ms TimeCoverageRelationStatistics Valid=266, Invalid=2596, Unknown=0, NotChecked=0, Total=2862 [2021-06-12 22:43:31,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7407 states. [2021-06-12 22:43:31,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7407 to 5290. [2021-06-12 22:43:31,322 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) [2021-06-12 22:43:31,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 17932 transitions. [2021-06-12 22:43:31,330 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 17932 transitions. Word has length 39 [2021-06-12 22:43:31,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:31,330 INFO L482 AbstractCegarLoop]: Abstraction has 5290 states and 17932 transitions. [2021-06-12 22:43:31,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:31,330 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 17932 transitions. [2021-06-12 22:43:31,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:31,335 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:31,336 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:31,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-06-12 22:43:31,336 INFO L430 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:31,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:31,336 INFO L82 PathProgramCache]: Analyzing trace with hash -781482754, now seen corresponding path program 373 times [2021-06-12 22:43:31,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:31,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708260220] [2021-06-12 22:43:31,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:31,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:31,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:31,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708260220] [2021-06-12 22:43:31,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708260220] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:31,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:31,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:31,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382290622] [2021-06-12 22:43:31,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:31,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:31,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:31,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:31,532 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) [2021-06-12 22:43:33,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:33,369 INFO L93 Difference]: Finished difference Result 8195 states and 27530 transitions. [2021-06-12 22:43:33,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-12 22:43:33,370 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 [2021-06-12 22:43:33,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:33,401 INFO L225 Difference]: With dead ends: 8195 [2021-06-12 22:43:33,402 INFO L226 Difference]: Without dead ends: 8135 [2021-06-12 22:43:33,402 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 1053.9ms TimeCoverageRelationStatistics Valid=357, Invalid=3803, Unknown=0, NotChecked=0, Total=4160 [2021-06-12 22:43:33,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8135 states. [2021-06-12 22:43:33,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8135 to 5288. [2021-06-12 22:43:33,469 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) [2021-06-12 22:43:33,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 17927 transitions. [2021-06-12 22:43:33,478 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 17927 transitions. Word has length 39 [2021-06-12 22:43:33,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:33,478 INFO L482 AbstractCegarLoop]: Abstraction has 5288 states and 17927 transitions. [2021-06-12 22:43:33,478 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:33,478 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 17927 transitions. [2021-06-12 22:43:33,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:33,483 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:33,483 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:33,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-06-12 22:43:33,484 INFO L430 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:33,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:33,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1636080940, now seen corresponding path program 374 times [2021-06-12 22:43:33,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:33,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719945377] [2021-06-12 22:43:33,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:33,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:33,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719945377] [2021-06-12 22:43:33,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719945377] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:33,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:33,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:33,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288061948] [2021-06-12 22:43:33,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:33,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:33,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:33,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:33,656 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) [2021-06-12 22:43:34,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:34,974 INFO L93 Difference]: Finished difference Result 7383 states and 24812 transitions. [2021-06-12 22:43:34,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:43:34,975 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:34,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:34,986 INFO L225 Difference]: With dead ends: 7383 [2021-06-12 22:43:34,986 INFO L226 Difference]: Without dead ends: 7292 [2021-06-12 22:43:34,987 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 709.3ms TimeCoverageRelationStatistics Valid=238, Invalid=2414, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:43:35,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7292 states. [2021-06-12 22:43:35,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7292 to 5288. [2021-06-12 22:43:35,078 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) [2021-06-12 22:43:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 17921 transitions. [2021-06-12 22:43:35,085 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 17921 transitions. Word has length 39 [2021-06-12 22:43:35,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:35,085 INFO L482 AbstractCegarLoop]: Abstraction has 5288 states and 17921 transitions. [2021-06-12 22:43:35,086 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) [2021-06-12 22:43:35,086 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 17921 transitions. [2021-06-12 22:43:35,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:35,091 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:35,091 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:35,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-06-12 22:43:35,091 INFO L430 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:35,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:35,091 INFO L82 PathProgramCache]: Analyzing trace with hash 133598734, now seen corresponding path program 375 times [2021-06-12 22:43:35,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:35,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891594011] [2021-06-12 22:43:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:35,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:35,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:35,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891594011] [2021-06-12 22:43:35,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891594011] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:35,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:35,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:35,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161019807] [2021-06-12 22:43:35,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:35,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:35,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:35,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:35,261 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) [2021-06-12 22:43:37,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:37,257 INFO L93 Difference]: Finished difference Result 8285 states and 27895 transitions. [2021-06-12 22:43:37,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-12 22:43:37,257 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:37,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:37,269 INFO L225 Difference]: With dead ends: 8285 [2021-06-12 22:43:37,270 INFO L226 Difference]: Without dead ends: 8185 [2021-06-12 22:43:37,270 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1052.8ms TimeCoverageRelationStatistics Valid=367, Invalid=3923, Unknown=0, NotChecked=0, Total=4290 [2021-06-12 22:43:37,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8185 states. [2021-06-12 22:43:37,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8185 to 5282. [2021-06-12 22:43:37,340 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) [2021-06-12 22:43:37,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 17902 transitions. [2021-06-12 22:43:37,348 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 17902 transitions. Word has length 39 [2021-06-12 22:43:37,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:37,348 INFO L482 AbstractCegarLoop]: Abstraction has 5282 states and 17902 transitions. [2021-06-12 22:43:37,348 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) [2021-06-12 22:43:37,348 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 17902 transitions. [2021-06-12 22:43:37,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:37,354 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:37,354 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:37,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-06-12 22:43:37,354 INFO L430 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:37,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:37,354 INFO L82 PathProgramCache]: Analyzing trace with hash -103026262, now seen corresponding path program 376 times [2021-06-12 22:43:37,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:37,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703005500] [2021-06-12 22:43:37,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:37,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:37,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703005500] [2021-06-12 22:43:37,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703005500] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:37,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:37,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:43:37,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448632249] [2021-06-12 22:43:37,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:43:37,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:37,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:43:37,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:43:37,520 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) [2021-06-12 22:43:38,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:38,511 INFO L93 Difference]: Finished difference Result 5634 states and 18942 transitions. [2021-06-12 22:43:38,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-12 22:43:38,511 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 [2021-06-12 22:43:38,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:38,519 INFO L225 Difference]: With dead ends: 5634 [2021-06-12 22:43:38,519 INFO L226 Difference]: Without dead ends: 5558 [2021-06-12 22:43:38,520 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 618.7ms TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2021-06-12 22:43:38,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2021-06-12 22:43:38,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 5326. [2021-06-12 22:43:38,576 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) [2021-06-12 22:43:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5326 states to 5326 states and 18032 transitions. [2021-06-12 22:43:38,585 INFO L78 Accepts]: Start accepts. Automaton has 5326 states and 18032 transitions. Word has length 39 [2021-06-12 22:43:38,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:38,585 INFO L482 AbstractCegarLoop]: Abstraction has 5326 states and 18032 transitions. [2021-06-12 22:43:38,585 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) [2021-06-12 22:43:38,585 INFO L276 IsEmpty]: Start isEmpty. Operand 5326 states and 18032 transitions. [2021-06-12 22:43:38,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:38,590 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:38,590 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:38,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-06-12 22:43:38,591 INFO L430 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:38,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:38,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1121079874, now seen corresponding path program 377 times [2021-06-12 22:43:38,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:38,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218691841] [2021-06-12 22:43:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:38,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:38,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218691841] [2021-06-12 22:43:38,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218691841] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:38,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:38,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:38,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906085683] [2021-06-12 22:43:38,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:38,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:38,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:38,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:38,789 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) [2021-06-12 22:43:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:39,885 INFO L93 Difference]: Finished difference Result 5616 states and 18888 transitions. [2021-06-12 22:43:39,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-12 22:43:39,885 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:39,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:39,893 INFO L225 Difference]: With dead ends: 5616 [2021-06-12 22:43:39,893 INFO L226 Difference]: Without dead ends: 5550 [2021-06-12 22:43:39,894 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 705.4ms TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:43:39,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5550 states. [2021-06-12 22:43:39,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5550 to 5318. [2021-06-12 22:43:39,951 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) [2021-06-12 22:43:39,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 18008 transitions. [2021-06-12 22:43:39,959 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 18008 transitions. Word has length 39 [2021-06-12 22:43:39,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:39,959 INFO L482 AbstractCegarLoop]: Abstraction has 5318 states and 18008 transitions. [2021-06-12 22:43:39,959 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) [2021-06-12 22:43:39,959 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 18008 transitions. [2021-06-12 22:43:39,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:39,965 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:39,965 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:39,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-06-12 22:43:39,965 INFO L430 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:39,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:39,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1403345528, now seen corresponding path program 378 times [2021-06-12 22:43:39,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:39,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876176977] [2021-06-12 22:43:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:40,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:40,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876176977] [2021-06-12 22:43:40,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876176977] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:40,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:40,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:40,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093298521] [2021-06-12 22:43:40,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:40,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:40,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:40,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:40,140 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) [2021-06-12 22:43:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:41,298 INFO L93 Difference]: Finished difference Result 5629 states and 18921 transitions. [2021-06-12 22:43:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:43:41,298 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 [2021-06-12 22:43:41,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:41,307 INFO L225 Difference]: With dead ends: 5629 [2021-06-12 22:43:41,307 INFO L226 Difference]: Without dead ends: 5499 [2021-06-12 22:43:41,307 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 670.4ms TimeCoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:43:41,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2021-06-12 22:43:41,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 5282. [2021-06-12 22:43:41,365 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) [2021-06-12 22:43:41,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 17894 transitions. [2021-06-12 22:43:41,373 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 17894 transitions. Word has length 39 [2021-06-12 22:43:41,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:41,374 INFO L482 AbstractCegarLoop]: Abstraction has 5282 states and 17894 transitions. [2021-06-12 22:43:41,374 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) [2021-06-12 22:43:41,374 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 17894 transitions. [2021-06-12 22:43:41,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:41,380 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:41,380 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:41,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-06-12 22:43:41,380 INFO L430 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:41,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:41,380 INFO L82 PathProgramCache]: Analyzing trace with hash -355827722, now seen corresponding path program 379 times [2021-06-12 22:43:41,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:41,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529217184] [2021-06-12 22:43:41,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:41,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:41,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:41,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529217184] [2021-06-12 22:43:41,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529217184] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:41,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:41,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:41,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761154865] [2021-06-12 22:43:41,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:41,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:41,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:41,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:41,553 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) [2021-06-12 22:43:43,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:43,450 INFO L93 Difference]: Finished difference Result 5884 states and 19567 transitions. [2021-06-12 22:43:43,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-12 22:43:43,450 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:43,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:43,458 INFO L225 Difference]: With dead ends: 5884 [2021-06-12 22:43:43,459 INFO L226 Difference]: Without dead ends: 5820 [2021-06-12 22:43:43,459 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 1263.6ms TimeCoverageRelationStatistics Valid=416, Invalid=4554, Unknown=0, NotChecked=0, Total=4970 [2021-06-12 22:43:43,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5820 states. [2021-06-12 22:43:43,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5820 to 5292. [2021-06-12 22:43:43,518 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) [2021-06-12 22:43:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 17928 transitions. [2021-06-12 22:43:43,526 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 17928 transitions. Word has length 39 [2021-06-12 22:43:43,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:43,527 INFO L482 AbstractCegarLoop]: Abstraction has 5292 states and 17928 transitions. [2021-06-12 22:43:43,527 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) [2021-06-12 22:43:43,527 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 17928 transitions. [2021-06-12 22:43:43,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:43,532 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:43,532 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:43,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-06-12 22:43:43,532 INFO L430 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:43,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:43,533 INFO L82 PathProgramCache]: Analyzing trace with hash 562655848, now seen corresponding path program 380 times [2021-06-12 22:43:43,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:43,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102713388] [2021-06-12 22:43:43,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:43,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:43,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102713388] [2021-06-12 22:43:43,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102713388] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:43,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:43,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:43,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137110859] [2021-06-12 22:43:43,704 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:43,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:43,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:43,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:43,704 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) [2021-06-12 22:43:44,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:44,944 INFO L93 Difference]: Finished difference Result 5732 states and 19160 transitions. [2021-06-12 22:43:44,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-12 22:43:44,944 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 [2021-06-12 22:43:44,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:44,952 INFO L225 Difference]: With dead ends: 5732 [2021-06-12 22:43:44,952 INFO L226 Difference]: Without dead ends: 5689 [2021-06-12 22:43:44,952 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 800.0ms TimeCoverageRelationStatistics Valid=261, Invalid=2495, Unknown=0, NotChecked=0, Total=2756 [2021-06-12 22:43:44,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5689 states. [2021-06-12 22:43:45,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5689 to 5298. [2021-06-12 22:43:45,010 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) [2021-06-12 22:43:45,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5298 states to 5298 states and 17941 transitions. [2021-06-12 22:43:45,018 INFO L78 Accepts]: Start accepts. Automaton has 5298 states and 17941 transitions. Word has length 39 [2021-06-12 22:43:45,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:45,018 INFO L482 AbstractCegarLoop]: Abstraction has 5298 states and 17941 transitions. [2021-06-12 22:43:45,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:45,018 INFO L276 IsEmpty]: Start isEmpty. Operand 5298 states and 17941 transitions. [2021-06-12 22:43:45,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:45,023 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:45,024 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:45,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-06-12 22:43:45,024 INFO L430 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:45,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:45,024 INFO L82 PathProgramCache]: Analyzing trace with hash 582804582, now seen corresponding path program 381 times [2021-06-12 22:43:45,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:45,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477163762] [2021-06-12 22:43:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:45,199 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:45,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477163762] [2021-06-12 22:43:45,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477163762] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:45,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:45,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:45,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422446205] [2021-06-12 22:43:45,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:45,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:45,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:45,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:45,199 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) [2021-06-12 22:43:46,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:46,451 INFO L93 Difference]: Finished difference Result 5695 states and 19078 transitions. [2021-06-12 22:43:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-12 22:43:46,451 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:46,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:46,459 INFO L225 Difference]: With dead ends: 5695 [2021-06-12 22:43:46,459 INFO L226 Difference]: Without dead ends: 5652 [2021-06-12 22:43:46,460 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 790.9ms TimeCoverageRelationStatistics Valid=264, Invalid=2492, Unknown=0, NotChecked=0, Total=2756 [2021-06-12 22:43:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2021-06-12 22:43:46,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 5294. [2021-06-12 22:43:46,516 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) [2021-06-12 22:43:46,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 17931 transitions. [2021-06-12 22:43:46,525 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 17931 transitions. Word has length 39 [2021-06-12 22:43:46,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:46,525 INFO L482 AbstractCegarLoop]: Abstraction has 5294 states and 17931 transitions. [2021-06-12 22:43:46,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:46,525 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 17931 transitions. [2021-06-12 22:43:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:46,530 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:46,530 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:46,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-06-12 22:43:46,530 INFO L430 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:46,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:46,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1735308070, now seen corresponding path program 382 times [2021-06-12 22:43:46,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:46,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081078221] [2021-06-12 22:43:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:46,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:46,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:46,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081078221] [2021-06-12 22:43:46,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081078221] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:46,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:46,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:46,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280465914] [2021-06-12 22:43:46,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:46,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:46,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:46,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:46,789 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) [2021-06-12 22:43:48,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:48,211 INFO L93 Difference]: Finished difference Result 5736 states and 19182 transitions. [2021-06-12 22:43:48,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-12 22:43:48,211 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 [2021-06-12 22:43:48,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:48,219 INFO L225 Difference]: With dead ends: 5736 [2021-06-12 22:43:48,219 INFO L226 Difference]: Without dead ends: 5676 [2021-06-12 22:43:48,219 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 1016.1ms TimeCoverageRelationStatistics Valid=308, Invalid=2998, Unknown=0, NotChecked=0, Total=3306 [2021-06-12 22:43:48,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5676 states. [2021-06-12 22:43:48,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5676 to 5300. [2021-06-12 22:43:48,275 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) [2021-06-12 22:43:48,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 17952 transitions. [2021-06-12 22:43:48,283 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 17952 transitions. Word has length 39 [2021-06-12 22:43:48,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:48,284 INFO L482 AbstractCegarLoop]: Abstraction has 5300 states and 17952 transitions. [2021-06-12 22:43:48,284 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:48,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 17952 transitions. [2021-06-12 22:43:48,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:48,289 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:48,289 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:48,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-06-12 22:43:48,289 INFO L430 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:48,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:48,290 INFO L82 PathProgramCache]: Analyzing trace with hash -344258472, now seen corresponding path program 383 times [2021-06-12 22:43:48,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:48,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979062233] [2021-06-12 22:43:48,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:48,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:48,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979062233] [2021-06-12 22:43:48,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979062233] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:48,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:48,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:43:48,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166274501] [2021-06-12 22:43:48,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:43:48,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:48,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:43:48,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:43:48,464 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) [2021-06-12 22:43:49,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:49,687 INFO L93 Difference]: Finished difference Result 5707 states and 19123 transitions. [2021-06-12 22:43:49,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-12 22:43:49,688 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 [2021-06-12 22:43:49,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:49,696 INFO L225 Difference]: With dead ends: 5707 [2021-06-12 22:43:49,696 INFO L226 Difference]: Without dead ends: 5631 [2021-06-12 22:43:49,696 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 811.8ms TimeCoverageRelationStatistics Valid=260, Invalid=2496, Unknown=0, NotChecked=0, Total=2756 [2021-06-12 22:43:49,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2021-06-12 22:43:49,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 5312. [2021-06-12 22:43:49,756 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) [2021-06-12 22:43:49,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 17976 transitions. [2021-06-12 22:43:49,764 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 17976 transitions. Word has length 39 [2021-06-12 22:43:49,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:49,764 INFO L482 AbstractCegarLoop]: Abstraction has 5312 states and 17976 transitions. [2021-06-12 22:43:49,764 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) [2021-06-12 22:43:49,764 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 17976 transitions. [2021-06-12 22:43:49,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:49,797 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:49,797 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:49,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-06-12 22:43:49,797 INFO L430 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:49,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:49,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1362312084, now seen corresponding path program 384 times [2021-06-12 22:43:49,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:49,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425576097] [2021-06-12 22:43:49,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:49,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:49,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425576097] [2021-06-12 22:43:49,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425576097] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:49,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:49,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:49,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746325642] [2021-06-12 22:43:49,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:49,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:49,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:49,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:49,969 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) [2021-06-12 22:43:51,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:51,307 INFO L93 Difference]: Finished difference Result 5689 states and 19069 transitions. [2021-06-12 22:43:51,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-12 22:43:51,307 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 [2021-06-12 22:43:51,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:51,316 INFO L225 Difference]: With dead ends: 5689 [2021-06-12 22:43:51,316 INFO L226 Difference]: Without dead ends: 5619 [2021-06-12 22:43:51,316 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 873.7ms TimeCoverageRelationStatistics Valid=280, Invalid=2800, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:43:51,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5619 states. [2021-06-12 22:43:51,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5619 to 5300. [2021-06-12 22:43:51,376 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) [2021-06-12 22:43:51,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 17946 transitions. [2021-06-12 22:43:51,384 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 17946 transitions. Word has length 39 [2021-06-12 22:43:51,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:51,384 INFO L482 AbstractCegarLoop]: Abstraction has 5300 states and 17946 transitions. [2021-06-12 22:43:51,385 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:51,385 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 17946 transitions. [2021-06-12 22:43:51,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:51,390 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:51,391 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:51,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-06-12 22:43:51,391 INFO L430 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:51,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:51,391 INFO L82 PathProgramCache]: Analyzing trace with hash -885924214, now seen corresponding path program 385 times [2021-06-12 22:43:51,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:51,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777297200] [2021-06-12 22:43:51,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:51,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:51,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777297200] [2021-06-12 22:43:51,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777297200] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:51,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:51,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:51,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095258404] [2021-06-12 22:43:51,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:51,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:51,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:51,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:51,564 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) [2021-06-12 22:43:53,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:53,442 INFO L93 Difference]: Finished difference Result 5861 states and 19500 transitions. [2021-06-12 22:43:53,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-12 22:43:53,443 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:53,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:53,451 INFO L225 Difference]: With dead ends: 5861 [2021-06-12 22:43:53,451 INFO L226 Difference]: Without dead ends: 5797 [2021-06-12 22:43:53,452 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 1240.6ms TimeCoverageRelationStatistics Valid=366, Invalid=4056, Unknown=0, NotChecked=0, Total=4422 [2021-06-12 22:43:53,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5797 states. [2021-06-12 22:43:53,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5797 to 5309. [2021-06-12 22:43:53,514 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) [2021-06-12 22:43:53,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 17970 transitions. [2021-06-12 22:43:53,522 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 17970 transitions. Word has length 39 [2021-06-12 22:43:53,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:53,522 INFO L482 AbstractCegarLoop]: Abstraction has 5309 states and 17970 transitions. [2021-06-12 22:43:53,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:53,522 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 17970 transitions. [2021-06-12 22:43:53,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:53,528 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:53,528 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:53,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-06-12 22:43:53,528 INFO L430 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:53,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:53,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1871623852, now seen corresponding path program 386 times [2021-06-12 22:43:53,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:53,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655432082] [2021-06-12 22:43:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:53,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:53,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655432082] [2021-06-12 22:43:53,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655432082] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:53,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:53,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:53,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647696892] [2021-06-12 22:43:53,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:53,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:53,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:53,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:53,726 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) [2021-06-12 22:43:54,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:54,895 INFO L93 Difference]: Finished difference Result 5712 states and 19100 transitions. [2021-06-12 22:43:54,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:43:54,896 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:54,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:54,904 INFO L225 Difference]: With dead ends: 5712 [2021-06-12 22:43:54,904 INFO L226 Difference]: Without dead ends: 5669 [2021-06-12 22:43:54,904 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 724.7ms TimeCoverageRelationStatistics Valid=224, Invalid=2226, Unknown=0, NotChecked=0, Total=2450 [2021-06-12 22:43:54,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2021-06-12 22:43:54,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 5318. [2021-06-12 22:43:54,962 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) [2021-06-12 22:43:54,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 17991 transitions. [2021-06-12 22:43:54,970 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 17991 transitions. Word has length 39 [2021-06-12 22:43:54,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:54,970 INFO L482 AbstractCegarLoop]: Abstraction has 5318 states and 17991 transitions. [2021-06-12 22:43:54,970 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) [2021-06-12 22:43:54,970 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 17991 transitions. [2021-06-12 22:43:54,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:54,976 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:54,976 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:54,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-06-12 22:43:54,976 INFO L430 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:54,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:54,976 INFO L82 PathProgramCache]: Analyzing trace with hash -673236308, now seen corresponding path program 387 times [2021-06-12 22:43:54,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:54,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625207459] [2021-06-12 22:43:54,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:55,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:55,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:55,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625207459] [2021-06-12 22:43:55,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625207459] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:55,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:55,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:55,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470699748] [2021-06-12 22:43:55,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:55,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:55,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:55,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:55,149 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) [2021-06-12 22:43:56,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:56,350 INFO L93 Difference]: Finished difference Result 5681 states and 19033 transitions. [2021-06-12 22:43:56,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:43:56,350 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:56,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:56,359 INFO L225 Difference]: With dead ends: 5681 [2021-06-12 22:43:56,359 INFO L226 Difference]: Without dead ends: 5630 [2021-06-12 22:43:56,359 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 738.8ms TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:43:56,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2021-06-12 22:43:56,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 5312. [2021-06-12 22:43:56,420 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) [2021-06-12 22:43:56,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 17975 transitions. [2021-06-12 22:43:56,428 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 17975 transitions. Word has length 39 [2021-06-12 22:43:56,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:56,428 INFO L482 AbstractCegarLoop]: Abstraction has 5312 states and 17975 transitions. [2021-06-12 22:43:56,428 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) [2021-06-12 22:43:56,428 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 17975 transitions. [2021-06-12 22:43:56,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:56,434 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:56,434 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:56,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-06-12 22:43:56,434 INFO L430 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:56,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:56,434 INFO L82 PathProgramCache]: Analyzing trace with hash -56017906, now seen corresponding path program 388 times [2021-06-12 22:43:56,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:56,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827373434] [2021-06-12 22:43:56,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:56,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:56,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827373434] [2021-06-12 22:43:56,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827373434] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:56,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:56,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:56,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23611679] [2021-06-12 22:43:56,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:56,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:56,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:56,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:56,608 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) [2021-06-12 22:43:57,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:57,972 INFO L93 Difference]: Finished difference Result 5754 states and 19200 transitions. [2021-06-12 22:43:57,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-12 22:43:57,972 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:43:57,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:57,981 INFO L225 Difference]: With dead ends: 5754 [2021-06-12 22:43:57,981 INFO L226 Difference]: Without dead ends: 5708 [2021-06-12 22:43:57,981 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 869.7ms TimeCoverageRelationStatistics Valid=275, Invalid=2805, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:43:57,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5708 states. [2021-06-12 22:43:58,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5708 to 5319. [2021-06-12 22:43:58,038 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) [2021-06-12 22:43:58,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 17990 transitions. [2021-06-12 22:43:58,046 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 17990 transitions. Word has length 39 [2021-06-12 22:43:58,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:58,046 INFO L482 AbstractCegarLoop]: Abstraction has 5319 states and 17990 transitions. [2021-06-12 22:43:58,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:58,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 17990 transitions. [2021-06-12 22:43:58,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:58,052 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:58,052 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:58,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-06-12 22:43:58,052 INFO L430 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:58,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:58,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1491085396, now seen corresponding path program 389 times [2021-06-12 22:43:58,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:58,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301191912] [2021-06-12 22:43:58,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:58,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:58,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301191912] [2021-06-12 22:43:58,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301191912] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:58,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:58,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:43:58,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666526108] [2021-06-12 22:43:58,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:43:58,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:58,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:43:58,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:43:58,227 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) [2021-06-12 22:43:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:43:59,453 INFO L93 Difference]: Finished difference Result 5689 states and 19047 transitions. [2021-06-12 22:43:59,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:43:59,454 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 [2021-06-12 22:43:59,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:43:59,462 INFO L225 Difference]: With dead ends: 5689 [2021-06-12 22:43:59,462 INFO L226 Difference]: Without dead ends: 5634 [2021-06-12 22:43:59,462 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 755.0ms TimeCoverageRelationStatistics Valid=243, Invalid=2409, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:43:59,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5634 states. [2021-06-12 22:43:59,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5634 to 5316. [2021-06-12 22:43:59,521 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) [2021-06-12 22:43:59,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 17982 transitions. [2021-06-12 22:43:59,529 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 17982 transitions. Word has length 39 [2021-06-12 22:43:59,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:43:59,530 INFO L482 AbstractCegarLoop]: Abstraction has 5316 states and 17982 transitions. [2021-06-12 22:43:59,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:43:59,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 17982 transitions. [2021-06-12 22:43:59,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:43:59,536 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:43:59,536 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:43:59,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-06-12 22:43:59,536 INFO L430 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:43:59,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:43:59,536 INFO L82 PathProgramCache]: Analyzing trace with hash -2071702106, now seen corresponding path program 390 times [2021-06-12 22:43:59,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:43:59,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202540783] [2021-06-12 22:43:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:43:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:43:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:43:59,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:43:59,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202540783] [2021-06-12 22:43:59,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202540783] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:43:59,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:43:59,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-12 22:43:59,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161749318] [2021-06-12 22:43:59,705 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-12 22:43:59,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:43:59,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-12 22:43:59,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-12 22:43:59,705 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) [2021-06-12 22:44:00,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:00,921 INFO L93 Difference]: Finished difference Result 5650 states and 18957 transitions. [2021-06-12 22:44:00,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:44:00,921 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 [2021-06-12 22:44:00,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:00,930 INFO L225 Difference]: With dead ends: 5650 [2021-06-12 22:44:00,930 INFO L226 Difference]: Without dead ends: 5574 [2021-06-12 22:44:00,930 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 782.0ms TimeCoverageRelationStatistics Valid=249, Invalid=2403, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:44:00,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5574 states. [2021-06-12 22:44:01,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5574 to 5330. [2021-06-12 22:44:01,008 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) [2021-06-12 22:44:01,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18012 transitions. [2021-06-12 22:44:01,016 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18012 transitions. Word has length 39 [2021-06-12 22:44:01,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:01,016 INFO L482 AbstractCegarLoop]: Abstraction has 5330 states and 18012 transitions. [2021-06-12 22:44:01,016 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) [2021-06-12 22:44:01,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18012 transitions. [2021-06-12 22:44:01,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:01,022 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:01,022 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:01,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-06-12 22:44:01,022 INFO L430 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:01,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:01,022 INFO L82 PathProgramCache]: Analyzing trace with hash 675342856, now seen corresponding path program 391 times [2021-06-12 22:44:01,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:01,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030451174] [2021-06-12 22:44:01,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:01,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:01,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030451174] [2021-06-12 22:44:01,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030451174] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:01,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:01,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:01,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230225059] [2021-06-12 22:44:01,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:01,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:01,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:01,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:01,198 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) [2021-06-12 22:44:02,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:02,527 INFO L93 Difference]: Finished difference Result 5674 states and 18990 transitions. [2021-06-12 22:44:02,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:44:02,527 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:02,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:02,535 INFO L225 Difference]: With dead ends: 5674 [2021-06-12 22:44:02,535 INFO L226 Difference]: Without dead ends: 5628 [2021-06-12 22:44:02,536 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 848.0ms TimeCoverageRelationStatistics Valid=267, Invalid=2703, Unknown=0, NotChecked=0, Total=2970 [2021-06-12 22:44:02,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2021-06-12 22:44:02,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 5330. [2021-06-12 22:44:02,594 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) [2021-06-12 22:44:02,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18012 transitions. [2021-06-12 22:44:02,603 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18012 transitions. Word has length 39 [2021-06-12 22:44:02,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:02,603 INFO L482 AbstractCegarLoop]: Abstraction has 5330 states and 18012 transitions. [2021-06-12 22:44:02,603 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) [2021-06-12 22:44:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18012 transitions. [2021-06-12 22:44:02,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:02,608 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:02,608 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:02,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-06-12 22:44:02,609 INFO L430 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:02,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:02,609 INFO L82 PathProgramCache]: Analyzing trace with hash -759724634, now seen corresponding path program 392 times [2021-06-12 22:44:02,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:02,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304396818] [2021-06-12 22:44:02,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:02,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:02,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304396818] [2021-06-12 22:44:02,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304396818] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:02,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:02,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:02,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287956234] [2021-06-12 22:44:02,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:02,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:02,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:02,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:02,807 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) [2021-06-12 22:44:03,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:03,963 INFO L93 Difference]: Finished difference Result 5602 states and 18822 transitions. [2021-06-12 22:44:03,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-12 22:44:03,963 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:03,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:03,972 INFO L225 Difference]: With dead ends: 5602 [2021-06-12 22:44:03,972 INFO L226 Difference]: Without dead ends: 5530 [2021-06-12 22:44:03,972 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 744.2ms TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:44:03,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5530 states. [2021-06-12 22:44:04,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5530 to 5310. [2021-06-12 22:44:04,030 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) [2021-06-12 22:44:04,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5310 states to 5310 states and 17963 transitions. [2021-06-12 22:44:04,038 INFO L78 Accepts]: Start accepts. Automaton has 5310 states and 17963 transitions. Word has length 39 [2021-06-12 22:44:04,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:04,038 INFO L482 AbstractCegarLoop]: Abstraction has 5310 states and 17963 transitions. [2021-06-12 22:44:04,038 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:04,038 INFO L276 IsEmpty]: Start isEmpty. Operand 5310 states and 17963 transitions. [2021-06-12 22:44:04,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:04,043 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:04,043 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:04,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-06-12 22:44:04,044 INFO L430 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:04,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:04,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1304361526, now seen corresponding path program 393 times [2021-06-12 22:44:04,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:04,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010897404] [2021-06-12 22:44:04,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:04,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:04,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010897404] [2021-06-12 22:44:04,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010897404] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:04,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:04,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:04,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918076599] [2021-06-12 22:44:04,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:04,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:04,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:04,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:04,215 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) [2021-06-12 22:44:05,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:05,634 INFO L93 Difference]: Finished difference Result 5762 states and 19200 transitions. [2021-06-12 22:44:05,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-12 22:44:05,635 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:05,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:05,643 INFO L225 Difference]: With dead ends: 5762 [2021-06-12 22:44:05,643 INFO L226 Difference]: Without dead ends: 5711 [2021-06-12 22:44:05,644 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 939.2ms TimeCoverageRelationStatistics Valid=315, Invalid=3107, Unknown=0, NotChecked=0, Total=3422 [2021-06-12 22:44:05,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2021-06-12 22:44:05,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 5323. [2021-06-12 22:44:05,706 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) [2021-06-12 22:44:05,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 17999 transitions. [2021-06-12 22:44:05,714 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 17999 transitions. Word has length 39 [2021-06-12 22:44:05,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:05,714 INFO L482 AbstractCegarLoop]: Abstraction has 5323 states and 17999 transitions. [2021-06-12 22:44:05,714 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:05,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 17999 transitions. [2021-06-12 22:44:05,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:05,720 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:05,720 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:05,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-06-12 22:44:05,720 INFO L430 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:05,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:05,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1284212792, now seen corresponding path program 394 times [2021-06-12 22:44:05,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:05,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764650565] [2021-06-12 22:44:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:05,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:05,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:05,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764650565] [2021-06-12 22:44:05,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764650565] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:05,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:05,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:05,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316442901] [2021-06-12 22:44:05,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:05,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:05,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:05,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:05,895 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) [2021-06-12 22:44:07,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:07,226 INFO L93 Difference]: Finished difference Result 5729 states and 19122 transitions. [2021-06-12 22:44:07,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-12 22:44:07,226 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:07,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:07,235 INFO L225 Difference]: With dead ends: 5729 [2021-06-12 22:44:07,235 INFO L226 Difference]: Without dead ends: 5686 [2021-06-12 22:44:07,236 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 881.4ms TimeCoverageRelationStatistics Valid=292, Invalid=2788, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:44:07,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-06-12 22:44:07,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 5323. [2021-06-12 22:44:07,301 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) [2021-06-12 22:44:07,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 17997 transitions. [2021-06-12 22:44:07,310 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 17997 transitions. Word has length 39 [2021-06-12 22:44:07,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:07,310 INFO L482 AbstractCegarLoop]: Abstraction has 5323 states and 17997 transitions. [2021-06-12 22:44:07,310 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) [2021-06-12 22:44:07,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 17997 transitions. [2021-06-12 22:44:07,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:07,317 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:07,317 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:07,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-06-12 22:44:07,317 INFO L430 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:07,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:07,317 INFO L82 PathProgramCache]: Analyzing trace with hash -131709304, now seen corresponding path program 395 times [2021-06-12 22:44:07,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:07,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657798255] [2021-06-12 22:44:07,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:07,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:07,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657798255] [2021-06-12 22:44:07,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657798255] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:07,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:07,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:07,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404865468] [2021-06-12 22:44:07,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:07,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:07,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:07,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:07,497 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) [2021-06-12 22:44:09,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:09,015 INFO L93 Difference]: Finished difference Result 5794 states and 19270 transitions. [2021-06-12 22:44:09,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-12 22:44:09,015 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:09,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:09,023 INFO L225 Difference]: With dead ends: 5794 [2021-06-12 22:44:09,024 INFO L226 Difference]: Without dead ends: 5734 [2021-06-12 22:44:09,024 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 1060.7ms TimeCoverageRelationStatistics Valid=338, Invalid=3322, Unknown=0, NotChecked=0, Total=3660 [2021-06-12 22:44:09,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5734 states. [2021-06-12 22:44:09,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5734 to 5319. [2021-06-12 22:44:09,088 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) [2021-06-12 22:44:09,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 17986 transitions. [2021-06-12 22:44:09,097 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 17986 transitions. Word has length 39 [2021-06-12 22:44:09,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:09,097 INFO L482 AbstractCegarLoop]: Abstraction has 5319 states and 17986 transitions. [2021-06-12 22:44:09,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 17986 transitions. [2021-06-12 22:44:09,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:09,104 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:09,104 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:09,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-06-12 22:44:09,105 INFO L430 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:09,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:09,105 INFO L82 PathProgramCache]: Analyzing trace with hash -199454184, now seen corresponding path program 396 times [2021-06-12 22:44:09,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:09,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342107740] [2021-06-12 22:44:09,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:09,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:09,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342107740] [2021-06-12 22:44:09,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342107740] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:09,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:09,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:09,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076125515] [2021-06-12 22:44:09,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:09,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:09,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:09,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:09,278 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) [2021-06-12 22:44:10,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:10,598 INFO L93 Difference]: Finished difference Result 5736 states and 19120 transitions. [2021-06-12 22:44:10,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-12 22:44:10,599 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 [2021-06-12 22:44:10,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:10,607 INFO L225 Difference]: With dead ends: 5736 [2021-06-12 22:44:10,607 INFO L226 Difference]: Without dead ends: 5693 [2021-06-12 22:44:10,607 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 865.1ms TimeCoverageRelationStatistics Valid=272, Invalid=2698, Unknown=0, NotChecked=0, Total=2970 [2021-06-12 22:44:10,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2021-06-12 22:44:10,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 5328. [2021-06-12 22:44:10,662 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) [2021-06-12 22:44:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 18007 transitions. [2021-06-12 22:44:10,671 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 18007 transitions. Word has length 39 [2021-06-12 22:44:10,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:10,671 INFO L482 AbstractCegarLoop]: Abstraction has 5328 states and 18007 transitions. [2021-06-12 22:44:10,671 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:10,671 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 18007 transitions. [2021-06-12 22:44:10,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:10,676 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:10,677 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:10,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-06-12 22:44:10,677 INFO L430 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:10,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:10,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1550652952, now seen corresponding path program 397 times [2021-06-12 22:44:10,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:10,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978395244] [2021-06-12 22:44:10,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:10,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:10,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:10,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978395244] [2021-06-12 22:44:10,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978395244] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:10,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:10,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:10,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681704391] [2021-06-12 22:44:10,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:10,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:10,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:10,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:10,847 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) [2021-06-12 22:44:12,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:12,163 INFO L93 Difference]: Finished difference Result 5770 states and 19204 transitions. [2021-06-12 22:44:12,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-12 22:44:12,163 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:12,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:12,171 INFO L225 Difference]: With dead ends: 5770 [2021-06-12 22:44:12,171 INFO L226 Difference]: Without dead ends: 5670 [2021-06-12 22:44:12,171 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 875.5ms TimeCoverageRelationStatistics Valid=288, Invalid=2904, Unknown=0, NotChecked=0, Total=3192 [2021-06-12 22:44:12,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5670 states. [2021-06-12 22:44:12,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5670 to 5330. [2021-06-12 22:44:12,228 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) [2021-06-12 22:44:12,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18005 transitions. [2021-06-12 22:44:12,237 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18005 transitions. Word has length 39 [2021-06-12 22:44:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:12,237 INFO L482 AbstractCegarLoop]: Abstraction has 5330 states and 18005 transitions. [2021-06-12 22:44:12,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:12,237 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18005 transitions. [2021-06-12 22:44:12,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:12,242 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:12,243 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:12,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-06-12 22:44:12,243 INFO L430 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:12,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:12,243 INFO L82 PathProgramCache]: Analyzing trace with hash -2127095942, now seen corresponding path program 398 times [2021-06-12 22:44:12,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:12,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026644414] [2021-06-12 22:44:12,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:12,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:12,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026644414] [2021-06-12 22:44:12,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026644414] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:12,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:12,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:12,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937408826] [2021-06-12 22:44:12,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:12,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:12,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:12,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:12,417 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) [2021-06-12 22:44:13,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:13,790 INFO L93 Difference]: Finished difference Result 5722 states and 19087 transitions. [2021-06-12 22:44:13,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-12 22:44:13,790 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:13,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:13,798 INFO L225 Difference]: With dead ends: 5722 [2021-06-12 22:44:13,798 INFO L226 Difference]: Without dead ends: 5676 [2021-06-12 22:44:13,799 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 924.4ms TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-06-12 22:44:13,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5676 states. [2021-06-12 22:44:13,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5676 to 5328. [2021-06-12 22:44:13,881 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) [2021-06-12 22:44:13,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 18002 transitions. [2021-06-12 22:44:13,889 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 18002 transitions. Word has length 39 [2021-06-12 22:44:13,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:13,889 INFO L482 AbstractCegarLoop]: Abstraction has 5328 states and 18002 transitions. [2021-06-12 22:44:13,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:13,889 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 18002 transitions. [2021-06-12 22:44:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:13,894 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:13,894 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:13,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-06-12 22:44:13,894 INFO L430 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:13,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:13,895 INFO L82 PathProgramCache]: Analyzing trace with hash 732803864, now seen corresponding path program 399 times [2021-06-12 22:44:13,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:13,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519625468] [2021-06-12 22:44:13,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:14,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:14,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519625468] [2021-06-12 22:44:14,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519625468] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:14,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:14,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:14,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365051691] [2021-06-12 22:44:14,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:14,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:14,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:14,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:14,064 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) [2021-06-12 22:44:15,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:15,361 INFO L93 Difference]: Finished difference Result 5691 states and 19011 transitions. [2021-06-12 22:44:15,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:44:15,361 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 [2021-06-12 22:44:15,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:15,370 INFO L225 Difference]: With dead ends: 5691 [2021-06-12 22:44:15,371 INFO L226 Difference]: Without dead ends: 5630 [2021-06-12 22:44:15,371 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 855.4ms TimeCoverageRelationStatistics Valid=265, Invalid=2597, Unknown=0, NotChecked=0, Total=2862 [2021-06-12 22:44:15,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2021-06-12 22:44:15,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 5319. [2021-06-12 22:44:15,437 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) [2021-06-12 22:44:15,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 17980 transitions. [2021-06-12 22:44:15,447 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 17980 transitions. Word has length 39 [2021-06-12 22:44:15,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:15,447 INFO L482 AbstractCegarLoop]: Abstraction has 5319 states and 17980 transitions. [2021-06-12 22:44:15,447 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:15,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 17980 transitions. [2021-06-12 22:44:15,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:15,454 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:15,454 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:15,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-06-12 22:44:15,454 INFO L430 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:15,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:15,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1009249178, now seen corresponding path program 400 times [2021-06-12 22:44:15,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:15,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855565978] [2021-06-12 22:44:15,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:15,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:15,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855565978] [2021-06-12 22:44:15,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855565978] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:15,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:15,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:15,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113964557] [2021-06-12 22:44:15,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:15,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:15,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:15,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:15,633 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) [2021-06-12 22:44:16,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:16,783 INFO L93 Difference]: Finished difference Result 5622 states and 18854 transitions. [2021-06-12 22:44:16,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-12 22:44:16,783 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:16,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:16,791 INFO L225 Difference]: With dead ends: 5622 [2021-06-12 22:44:16,791 INFO L226 Difference]: Without dead ends: 5579 [2021-06-12 22:44:16,792 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 750.6ms TimeCoverageRelationStatistics Valid=235, Invalid=2215, Unknown=0, NotChecked=0, Total=2450 [2021-06-12 22:44:16,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5579 states. [2021-06-12 22:44:16,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5579 to 5315. [2021-06-12 22:44:16,853 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) [2021-06-12 22:44:16,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5315 states to 5315 states and 17970 transitions. [2021-06-12 22:44:16,862 INFO L78 Accepts]: Start accepts. Automaton has 5315 states and 17970 transitions. Word has length 39 [2021-06-12 22:44:16,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:16,862 INFO L482 AbstractCegarLoop]: Abstraction has 5315 states and 17970 transitions. [2021-06-12 22:44:16,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:16,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5315 states and 17970 transitions. [2021-06-12 22:44:16,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:16,869 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:16,869 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:16,869 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-06-12 22:44:16,869 INFO L430 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:16,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:16,869 INFO L82 PathProgramCache]: Analyzing trace with hash -549899254, now seen corresponding path program 401 times [2021-06-12 22:44:16,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:16,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571935767] [2021-06-12 22:44:16,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:17,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:17,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:17,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571935767] [2021-06-12 22:44:17,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571935767] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:17,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:17,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:17,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127833501] [2021-06-12 22:44:17,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:17,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:17,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:17,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:17,040 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) [2021-06-12 22:44:18,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:18,218 INFO L93 Difference]: Finished difference Result 5624 states and 18861 transitions. [2021-06-12 22:44:18,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:44:18,218 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:18,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:18,226 INFO L225 Difference]: With dead ends: 5624 [2021-06-12 22:44:18,226 INFO L226 Difference]: Without dead ends: 5573 [2021-06-12 22:44:18,227 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 754.4ms TimeCoverageRelationStatistics Valid=239, Invalid=2311, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:44:18,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5573 states. [2021-06-12 22:44:18,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5573 to 5309. [2021-06-12 22:44:18,284 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) [2021-06-12 22:44:18,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 17955 transitions. [2021-06-12 22:44:18,292 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 17955 transitions. Word has length 39 [2021-06-12 22:44:18,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:18,292 INFO L482 AbstractCegarLoop]: Abstraction has 5309 states and 17955 transitions. [2021-06-12 22:44:18,292 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) [2021-06-12 22:44:18,292 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 17955 transitions. [2021-06-12 22:44:18,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:18,298 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:18,298 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:18,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-06-12 22:44:18,298 INFO L430 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:18,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:18,298 INFO L82 PathProgramCache]: Analyzing trace with hash -175566746, now seen corresponding path program 402 times [2021-06-12 22:44:18,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:18,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988294805] [2021-06-12 22:44:18,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:18,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:18,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988294805] [2021-06-12 22:44:18,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988294805] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:18,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:18,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:18,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997704673] [2021-06-12 22:44:18,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:18,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:18,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:18,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:18,480 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) [2021-06-12 22:44:21,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:21,741 INFO L93 Difference]: Finished difference Result 9865 states and 32666 transitions. [2021-06-12 22:44:21,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-06-12 22:44:21,742 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:21,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:21,756 INFO L225 Difference]: With dead ends: 9865 [2021-06-12 22:44:21,756 INFO L226 Difference]: Without dead ends: 9742 [2021-06-12 22:44:21,756 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3079 ImplicationChecksByTransitivity, 2009.6ms TimeCoverageRelationStatistics Valid=742, Invalid=8764, Unknown=0, NotChecked=0, Total=9506 [2021-06-12 22:44:21,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9742 states. [2021-06-12 22:44:21,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9742 to 5434. [2021-06-12 22:44:21,839 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) [2021-06-12 22:44:21,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5434 states to 5434 states and 18373 transitions. [2021-06-12 22:44:21,847 INFO L78 Accepts]: Start accepts. Automaton has 5434 states and 18373 transitions. Word has length 39 [2021-06-12 22:44:21,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:21,847 INFO L482 AbstractCegarLoop]: Abstraction has 5434 states and 18373 transitions. [2021-06-12 22:44:21,847 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:21,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5434 states and 18373 transitions. [2021-06-12 22:44:21,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:21,853 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:21,853 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:21,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-06-12 22:44:21,853 INFO L430 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:21,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:21,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1933551160, now seen corresponding path program 403 times [2021-06-12 22:44:21,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:21,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540024340] [2021-06-12 22:44:21,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:22,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:22,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540024340] [2021-06-12 22:44:22,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540024340] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:22,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:22,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:22,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966709097] [2021-06-12 22:44:22,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:22,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:22,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:22,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:22,035 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) [2021-06-12 22:44:25,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:25,131 INFO L93 Difference]: Finished difference Result 9720 states and 32238 transitions. [2021-06-12 22:44:25,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-06-12 22:44:25,131 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 [2021-06-12 22:44:25,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:25,145 INFO L225 Difference]: With dead ends: 9720 [2021-06-12 22:44:25,145 INFO L226 Difference]: Without dead ends: 9525 [2021-06-12 22:44:25,146 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2920 ImplicationChecksByTransitivity, 1830.6ms TimeCoverageRelationStatistics Valid=705, Invalid=8415, Unknown=0, NotChecked=0, Total=9120 [2021-06-12 22:44:25,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9525 states. [2021-06-12 22:44:25,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9525 to 5493. [2021-06-12 22:44:25,225 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) [2021-06-12 22:44:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 18573 transitions. [2021-06-12 22:44:25,234 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 18573 transitions. Word has length 39 [2021-06-12 22:44:25,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:25,234 INFO L482 AbstractCegarLoop]: Abstraction has 5493 states and 18573 transitions. [2021-06-12 22:44:25,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:25,234 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 18573 transitions. [2021-06-12 22:44:25,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:25,241 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:25,241 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:25,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-06-12 22:44:25,241 INFO L430 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:25,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:25,241 INFO L82 PathProgramCache]: Analyzing trace with hash -602608834, now seen corresponding path program 404 times [2021-06-12 22:44:25,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:25,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5491111] [2021-06-12 22:44:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:25,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:25,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5491111] [2021-06-12 22:44:25,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5491111] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:25,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:25,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:25,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639041012] [2021-06-12 22:44:25,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:25,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:25,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:25,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:25,435 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) [2021-06-12 22:44:27,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:27,229 INFO L93 Difference]: Finished difference Result 7872 states and 26181 transitions. [2021-06-12 22:44:27,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-12 22:44:27,229 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:27,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:27,241 INFO L225 Difference]: With dead ends: 7872 [2021-06-12 22:44:27,241 INFO L226 Difference]: Without dead ends: 7754 [2021-06-12 22:44:27,241 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 1097.9ms TimeCoverageRelationStatistics Valid=407, Invalid=4285, Unknown=0, NotChecked=0, Total=4692 [2021-06-12 22:44:27,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7754 states. [2021-06-12 22:44:27,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7754 to 5504. [2021-06-12 22:44:27,331 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) [2021-06-12 22:44:27,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5504 states to 5504 states and 18609 transitions. [2021-06-12 22:44:27,339 INFO L78 Accepts]: Start accepts. Automaton has 5504 states and 18609 transitions. Word has length 39 [2021-06-12 22:44:27,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:27,339 INFO L482 AbstractCegarLoop]: Abstraction has 5504 states and 18609 transitions. [2021-06-12 22:44:27,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:27,339 INFO L276 IsEmpty]: Start isEmpty. Operand 5504 states and 18609 transitions. [2021-06-12 22:44:27,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:27,345 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:27,345 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:27,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-06-12 22:44:27,345 INFO L430 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:27,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:27,346 INFO L82 PathProgramCache]: Analyzing trace with hash 570043388, now seen corresponding path program 405 times [2021-06-12 22:44:27,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:27,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592927154] [2021-06-12 22:44:27,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:27,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:27,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592927154] [2021-06-12 22:44:27,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592927154] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:27,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:27,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:27,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965806488] [2021-06-12 22:44:27,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:27,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:27,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:27,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:27,518 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) [2021-06-12 22:44:29,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:29,705 INFO L93 Difference]: Finished difference Result 8538 states and 28553 transitions. [2021-06-12 22:44:29,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-12 22:44:29,705 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:29,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:29,717 INFO L225 Difference]: With dead ends: 8538 [2021-06-12 22:44:29,718 INFO L226 Difference]: Without dead ends: 8478 [2021-06-12 22:44:29,718 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 1300.6ms TimeCoverageRelationStatistics Valid=469, Invalid=5231, Unknown=0, NotChecked=0, Total=5700 [2021-06-12 22:44:29,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8478 states. [2021-06-12 22:44:29,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8478 to 5502. [2021-06-12 22:44:29,793 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) [2021-06-12 22:44:29,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 18604 transitions. [2021-06-12 22:44:29,801 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 18604 transitions. Word has length 39 [2021-06-12 22:44:29,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:29,801 INFO L482 AbstractCegarLoop]: Abstraction has 5502 states and 18604 transitions. [2021-06-12 22:44:29,801 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) [2021-06-12 22:44:29,801 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 18604 transitions. [2021-06-12 22:44:29,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:29,807 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:29,807 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:29,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-06-12 22:44:29,807 INFO L430 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:29,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:29,807 INFO L82 PathProgramCache]: Analyzing trace with hash -406882806, now seen corresponding path program 406 times [2021-06-12 22:44:29,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:29,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36668744] [2021-06-12 22:44:29,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:29,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:29,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36668744] [2021-06-12 22:44:29,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36668744] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:29,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:29,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:29,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573911418] [2021-06-12 22:44:29,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:29,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:29,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:29,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:29,979 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) [2021-06-12 22:44:31,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:31,576 INFO L93 Difference]: Finished difference Result 7666 states and 25683 transitions. [2021-06-12 22:44:31,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-12 22:44:31,577 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:31,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:31,588 INFO L225 Difference]: With dead ends: 7666 [2021-06-12 22:44:31,588 INFO L226 Difference]: Without dead ends: 7575 [2021-06-12 22:44:31,589 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 907.8ms TimeCoverageRelationStatistics Valid=309, Invalid=3231, Unknown=0, NotChecked=0, Total=3540 [2021-06-12 22:44:31,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7575 states. [2021-06-12 22:44:31,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7575 to 5502. [2021-06-12 22:44:31,660 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) [2021-06-12 22:44:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 18598 transitions. [2021-06-12 22:44:31,668 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 18598 transitions. Word has length 39 [2021-06-12 22:44:31,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:31,669 INFO L482 AbstractCegarLoop]: Abstraction has 5502 states and 18598 transitions. [2021-06-12 22:44:31,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:31,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 18598 transitions. [2021-06-12 22:44:31,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:31,675 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:31,675 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:31,675 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-06-12 22:44:31,675 INFO L430 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:31,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:31,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1909365012, now seen corresponding path program 407 times [2021-06-12 22:44:31,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:31,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829394319] [2021-06-12 22:44:31,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:31,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:31,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:31,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829394319] [2021-06-12 22:44:31,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829394319] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:31,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:31,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:31,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297566482] [2021-06-12 22:44:31,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:31,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:31,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:31,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:31,848 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) [2021-06-12 22:44:33,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:33,991 INFO L93 Difference]: Finished difference Result 8536 states and 28660 transitions. [2021-06-12 22:44:33,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-12 22:44:33,991 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 [2021-06-12 22:44:33,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:34,004 INFO L225 Difference]: With dead ends: 8536 [2021-06-12 22:44:34,004 INFO L226 Difference]: Without dead ends: 8436 [2021-06-12 22:44:34,004 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 1210.3ms TimeCoverageRelationStatistics Valid=423, Invalid=4689, Unknown=0, NotChecked=0, Total=5112 [2021-06-12 22:44:34,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8436 states. [2021-06-12 22:44:34,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8436 to 5493. [2021-06-12 22:44:34,081 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) [2021-06-12 22:44:34,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 18570 transitions. [2021-06-12 22:44:34,089 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 18570 transitions. Word has length 39 [2021-06-12 22:44:34,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:34,089 INFO L482 AbstractCegarLoop]: Abstraction has 5493 states and 18570 transitions. [2021-06-12 22:44:34,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:34,089 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 18570 transitions. [2021-06-12 22:44:34,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:34,095 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:34,095 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:34,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-06-12 22:44:34,095 INFO L430 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:34,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:34,096 INFO L82 PathProgramCache]: Analyzing trace with hash -734494272, now seen corresponding path program 408 times [2021-06-12 22:44:34,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:34,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201587210] [2021-06-12 22:44:34,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:34,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:34,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:34,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201587210] [2021-06-12 22:44:34,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201587210] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:34,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:34,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:34,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177397386] [2021-06-12 22:44:34,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:34,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:34,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:34,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:34,270 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) [2021-06-12 22:44:35,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:35,623 INFO L93 Difference]: Finished difference Result 5889 states and 19625 transitions. [2021-06-12 22:44:35,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:44:35,623 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:35,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:35,632 INFO L225 Difference]: With dead ends: 5889 [2021-06-12 22:44:35,632 INFO L226 Difference]: Without dead ends: 5834 [2021-06-12 22:44:35,632 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 904.6ms TimeCoverageRelationStatistics Valid=279, Invalid=2691, Unknown=0, NotChecked=0, Total=2970 [2021-06-12 22:44:35,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2021-06-12 22:44:35,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5511. [2021-06-12 22:44:35,693 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) [2021-06-12 22:44:35,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5511 states to 5511 states and 18615 transitions. [2021-06-12 22:44:35,704 INFO L78 Accepts]: Start accepts. Automaton has 5511 states and 18615 transitions. Word has length 39 [2021-06-12 22:44:35,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:35,704 INFO L482 AbstractCegarLoop]: Abstraction has 5511 states and 18615 transitions. [2021-06-12 22:44:35,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:35,704 INFO L276 IsEmpty]: Start isEmpty. Operand 5511 states and 18615 transitions. [2021-06-12 22:44:35,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:35,710 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:35,710 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:35,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-06-12 22:44:35,710 INFO L430 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:35,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:35,711 INFO L82 PathProgramCache]: Analyzing trace with hash 438157950, now seen corresponding path program 409 times [2021-06-12 22:44:35,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:35,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264850857] [2021-06-12 22:44:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:35,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:35,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:35,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264850857] [2021-06-12 22:44:35,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264850857] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:35,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:35,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:35,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688032943] [2021-06-12 22:44:35,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:35,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:35,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:35,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:35,884 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) [2021-06-12 22:44:37,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:37,230 INFO L93 Difference]: Finished difference Result 5859 states and 19550 transitions. [2021-06-12 22:44:37,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-12 22:44:37,231 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 [2021-06-12 22:44:37,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:37,240 INFO L225 Difference]: With dead ends: 5859 [2021-06-12 22:44:37,240 INFO L226 Difference]: Without dead ends: 5799 [2021-06-12 22:44:37,240 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 915.9ms TimeCoverageRelationStatistics Valid=270, Invalid=2486, Unknown=0, NotChecked=0, Total=2756 [2021-06-12 22:44:37,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2021-06-12 22:44:37,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 5509. [2021-06-12 22:44:37,306 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) [2021-06-12 22:44:37,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5509 states to 5509 states and 18609 transitions. [2021-06-12 22:44:37,316 INFO L78 Accepts]: Start accepts. Automaton has 5509 states and 18609 transitions. Word has length 39 [2021-06-12 22:44:37,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:37,316 INFO L482 AbstractCegarLoop]: Abstraction has 5509 states and 18609 transitions. [2021-06-12 22:44:37,317 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:37,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5509 states and 18609 transitions. [2021-06-12 22:44:37,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:37,323 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:37,323 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:37,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-06-12 22:44:37,324 INFO L430 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:37,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:37,324 INFO L82 PathProgramCache]: Analyzing trace with hash 370413070, now seen corresponding path program 410 times [2021-06-12 22:44:37,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:37,324 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167451855] [2021-06-12 22:44:37,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:37,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:37,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167451855] [2021-06-12 22:44:37,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167451855] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:37,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:37,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:37,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394130283] [2021-06-12 22:44:37,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:37,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:37,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:37,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:37,502 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) [2021-06-12 22:44:38,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:38,733 INFO L93 Difference]: Finished difference Result 5814 states and 19441 transitions. [2021-06-12 22:44:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-12 22:44:38,733 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:38,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:38,742 INFO L225 Difference]: With dead ends: 5814 [2021-06-12 22:44:38,742 INFO L226 Difference]: Without dead ends: 5771 [2021-06-12 22:44:38,742 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 797.8ms TimeCoverageRelationStatistics Valid=241, Invalid=2309, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:44:38,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5771 states. [2021-06-12 22:44:38,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5771 to 5515. [2021-06-12 22:44:38,804 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) [2021-06-12 22:44:38,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 18622 transitions. [2021-06-12 22:44:38,813 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 18622 transitions. Word has length 39 [2021-06-12 22:44:38,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:38,813 INFO L482 AbstractCegarLoop]: Abstraction has 5515 states and 18622 transitions. [2021-06-12 22:44:38,813 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) [2021-06-12 22:44:38,814 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 18622 transitions. [2021-06-12 22:44:38,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:38,820 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:38,820 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:38,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2021-06-12 22:44:38,820 INFO L430 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:38,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:38,820 INFO L82 PathProgramCache]: Analyzing trace with hash 2120520206, now seen corresponding path program 411 times [2021-06-12 22:44:38,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:38,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505259233] [2021-06-12 22:44:38,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:38,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:38,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505259233] [2021-06-12 22:44:38,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505259233] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:38,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:38,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:38,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842792998] [2021-06-12 22:44:38,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:38,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:38,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:38,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:38,994 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) [2021-06-12 22:44:40,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:40,181 INFO L93 Difference]: Finished difference Result 5897 states and 19623 transitions. [2021-06-12 22:44:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:44:40,181 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 [2021-06-12 22:44:40,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:40,190 INFO L225 Difference]: With dead ends: 5897 [2021-06-12 22:44:40,190 INFO L226 Difference]: Without dead ends: 5785 [2021-06-12 22:44:40,190 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 790.5ms TimeCoverageRelationStatistics Valid=254, Invalid=2398, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:44:40,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5785 states. [2021-06-12 22:44:40,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5785 to 5515. [2021-06-12 22:44:40,267 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) [2021-06-12 22:44:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 18603 transitions. [2021-06-12 22:44:40,276 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 18603 transitions. Word has length 39 [2021-06-12 22:44:40,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:40,276 INFO L482 AbstractCegarLoop]: Abstraction has 5515 states and 18603 transitions. [2021-06-12 22:44:40,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:40,276 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 18603 transitions. [2021-06-12 22:44:40,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:40,282 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:40,282 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:40,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2021-06-12 22:44:40,282 INFO L430 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:40,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:40,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1557228688, now seen corresponding path program 412 times [2021-06-12 22:44:40,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:40,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114698761] [2021-06-12 22:44:40,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:40,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:40,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114698761] [2021-06-12 22:44:40,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114698761] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:40,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:40,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:40,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997224994] [2021-06-12 22:44:40,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:40,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:40,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:40,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:40,453 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) [2021-06-12 22:44:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:41,545 INFO L93 Difference]: Finished difference Result 5816 states and 19421 transitions. [2021-06-12 22:44:41,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-12 22:44:41,546 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:41,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:41,554 INFO L225 Difference]: With dead ends: 5816 [2021-06-12 22:44:41,554 INFO L226 Difference]: Without dead ends: 5770 [2021-06-12 22:44:41,554 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 722.0ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-06-12 22:44:41,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5770 states. [2021-06-12 22:44:41,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5770 to 5507. [2021-06-12 22:44:41,613 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) [2021-06-12 22:44:41,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5507 states to 5507 states and 18591 transitions. [2021-06-12 22:44:41,621 INFO L78 Accepts]: Start accepts. Automaton has 5507 states and 18591 transitions. Word has length 39 [2021-06-12 22:44:41,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:41,621 INFO L482 AbstractCegarLoop]: Abstraction has 5507 states and 18591 transitions. [2021-06-12 22:44:41,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:41,621 INFO L276 IsEmpty]: Start isEmpty. Operand 5507 states and 18591 transitions. [2021-06-12 22:44:41,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:41,627 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:41,627 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:41,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2021-06-12 22:44:41,627 INFO L430 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:41,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:41,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1302671118, now seen corresponding path program 413 times [2021-06-12 22:44:41,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:41,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511102757] [2021-06-12 22:44:41,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:41,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:41,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:41,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511102757] [2021-06-12 22:44:41,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511102757] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:41,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:41,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:41,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85944582] [2021-06-12 22:44:41,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:41,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:41,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:41,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:41,799 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) [2021-06-12 22:44:42,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:42,892 INFO L93 Difference]: Finished difference Result 5800 states and 19385 transitions. [2021-06-12 22:44:42,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:44:42,892 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:42,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:42,900 INFO L225 Difference]: With dead ends: 5800 [2021-06-12 22:44:42,901 INFO L226 Difference]: Without dead ends: 5725 [2021-06-12 22:44:42,901 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 707.4ms TimeCoverageRelationStatistics Valid=228, Invalid=2124, Unknown=0, NotChecked=0, Total=2352 [2021-06-12 22:44:42,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5725 states. [2021-06-12 22:44:42,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5725 to 5477. [2021-06-12 22:44:42,959 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) [2021-06-12 22:44:42,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5477 states to 5477 states and 18522 transitions. [2021-06-12 22:44:42,968 INFO L78 Accepts]: Start accepts. Automaton has 5477 states and 18522 transitions. Word has length 39 [2021-06-12 22:44:42,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:42,968 INFO L482 AbstractCegarLoop]: Abstraction has 5477 states and 18522 transitions. [2021-06-12 22:44:42,968 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) [2021-06-12 22:44:42,968 INFO L276 IsEmpty]: Start isEmpty. Operand 5477 states and 18522 transitions. [2021-06-12 22:44:42,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:42,974 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:42,974 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:42,974 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2021-06-12 22:44:42,974 INFO L430 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:42,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:42,975 INFO L82 PathProgramCache]: Analyzing trace with hash 19968000, now seen corresponding path program 414 times [2021-06-12 22:44:42,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:42,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292530974] [2021-06-12 22:44:42,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:43,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:43,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:43,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292530974] [2021-06-12 22:44:43,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292530974] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:43,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:43,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:43,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785093168] [2021-06-12 22:44:43,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:43,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:43,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:43,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:43,146 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) [2021-06-12 22:44:44,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:44,207 INFO L93 Difference]: Finished difference Result 5735 states and 19239 transitions. [2021-06-12 22:44:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-12 22:44:44,207 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:44,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:44,216 INFO L225 Difference]: With dead ends: 5735 [2021-06-12 22:44:44,216 INFO L226 Difference]: Without dead ends: 5677 [2021-06-12 22:44:44,216 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 677.1ms TimeCoverageRelationStatistics Valid=212, Invalid=1950, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:44:44,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5677 states. [2021-06-12 22:44:44,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5677 to 5476. [2021-06-12 22:44:44,275 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) [2021-06-12 22:44:44,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5476 states to 5476 states and 18520 transitions. [2021-06-12 22:44:44,283 INFO L78 Accepts]: Start accepts. Automaton has 5476 states and 18520 transitions. Word has length 39 [2021-06-12 22:44:44,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:44,283 INFO L482 AbstractCegarLoop]: Abstraction has 5476 states and 18520 transitions. [2021-06-12 22:44:44,283 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) [2021-06-12 22:44:44,283 INFO L276 IsEmpty]: Start isEmpty. Operand 5476 states and 18520 transitions. [2021-06-12 22:44:44,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:44,289 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:44,289 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:44,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2021-06-12 22:44:44,289 INFO L430 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:44,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:44,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1358724588, now seen corresponding path program 415 times [2021-06-12 22:44:44,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:44,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313522127] [2021-06-12 22:44:44,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:44,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:44,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313522127] [2021-06-12 22:44:44,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313522127] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:44,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:44,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:44,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498897928] [2021-06-12 22:44:44,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:44,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:44,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:44,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:44,461 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) [2021-06-12 22:44:45,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:45,470 INFO L93 Difference]: Finished difference Result 5675 states and 19108 transitions. [2021-06-12 22:44:45,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:44:45,470 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:45,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:45,479 INFO L225 Difference]: With dead ends: 5675 [2021-06-12 22:44:45,479 INFO L226 Difference]: Without dead ends: 5575 [2021-06-12 22:44:45,479 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 648.9ms TimeCoverageRelationStatistics Valid=205, Invalid=1957, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:44:45,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5575 states. [2021-06-12 22:44:45,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5575 to 5437. [2021-06-12 22:44:45,555 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) [2021-06-12 22:44:45,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 18434 transitions. [2021-06-12 22:44:45,564 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 18434 transitions. Word has length 39 [2021-06-12 22:44:45,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:45,564 INFO L482 AbstractCegarLoop]: Abstraction has 5437 states and 18434 transitions. [2021-06-12 22:44:45,564 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:45,564 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 18434 transitions. [2021-06-12 22:44:45,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:45,570 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:45,570 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:45,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2021-06-12 22:44:45,570 INFO L430 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:45,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:45,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1578517338, now seen corresponding path program 416 times [2021-06-12 22:44:45,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:45,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843149428] [2021-06-12 22:44:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:45,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:45,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843149428] [2021-06-12 22:44:45,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843149428] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:45,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:45,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:45,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034802251] [2021-06-12 22:44:45,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:45,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:45,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:45,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:45,742 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) [2021-06-12 22:44:47,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:47,606 INFO L93 Difference]: Finished difference Result 7983 states and 26964 transitions. [2021-06-12 22:44:47,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-12 22:44:47,606 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:47,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:47,618 INFO L225 Difference]: With dead ends: 7983 [2021-06-12 22:44:47,618 INFO L226 Difference]: Without dead ends: 7940 [2021-06-12 22:44:47,618 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 1049.6ms TimeCoverageRelationStatistics Valid=362, Invalid=3928, Unknown=0, NotChecked=0, Total=4290 [2021-06-12 22:44:47,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7940 states. [2021-06-12 22:44:47,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7940 to 5471. [2021-06-12 22:44:47,686 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) [2021-06-12 22:44:47,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5471 states to 5471 states and 18541 transitions. [2021-06-12 22:44:47,695 INFO L78 Accepts]: Start accepts. Automaton has 5471 states and 18541 transitions. Word has length 39 [2021-06-12 22:44:47,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:47,695 INFO L482 AbstractCegarLoop]: Abstraction has 5471 states and 18541 transitions. [2021-06-12 22:44:47,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:47,695 INFO L276 IsEmpty]: Start isEmpty. Operand 5471 states and 18541 transitions. [2021-06-12 22:44:47,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:47,700 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:47,700 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:47,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2021-06-12 22:44:47,701 INFO L430 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:47,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:47,701 INFO L82 PathProgramCache]: Analyzing trace with hash -202080964, now seen corresponding path program 417 times [2021-06-12 22:44:47,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:47,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210815690] [2021-06-12 22:44:47,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:47,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:47,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210815690] [2021-06-12 22:44:47,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210815690] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:47,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:47,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:47,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618974189] [2021-06-12 22:44:47,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:47,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:47,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:47,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:47,874 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) [2021-06-12 22:44:50,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:50,058 INFO L93 Difference]: Finished difference Result 8808 states and 29786 transitions. [2021-06-12 22:44:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-12 22:44:50,058 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 [2021-06-12 22:44:50,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:50,072 INFO L225 Difference]: With dead ends: 8808 [2021-06-12 22:44:50,072 INFO L226 Difference]: Without dead ends: 8756 [2021-06-12 22:44:50,072 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 1230.2ms TimeCoverageRelationStatistics Valid=405, Invalid=4707, Unknown=0, NotChecked=0, Total=5112 [2021-06-12 22:44:50,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8756 states. [2021-06-12 22:44:50,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8756 to 5437. [2021-06-12 22:44:50,147 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) [2021-06-12 22:44:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 18434 transitions. [2021-06-12 22:44:50,155 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 18434 transitions. Word has length 39 [2021-06-12 22:44:50,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:50,155 INFO L482 AbstractCegarLoop]: Abstraction has 5437 states and 18434 transitions. [2021-06-12 22:44:50,155 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) [2021-06-12 22:44:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 18434 transitions. [2021-06-12 22:44:50,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:50,161 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:50,161 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:50,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2021-06-12 22:44:50,161 INFO L430 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:50,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:50,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1797966388, now seen corresponding path program 418 times [2021-06-12 22:44:50,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:50,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283334802] [2021-06-12 22:44:50,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:50,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:50,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283334802] [2021-06-12 22:44:50,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283334802] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:50,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:50,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:50,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107095461] [2021-06-12 22:44:50,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:50,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:50,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:50,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:50,341 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) [2021-06-12 22:44:51,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:51,816 INFO L93 Difference]: Finished difference Result 7494 states and 25129 transitions. [2021-06-12 22:44:51,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-12 22:44:51,816 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:51,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:51,827 INFO L225 Difference]: With dead ends: 7494 [2021-06-12 22:44:51,827 INFO L226 Difference]: Without dead ends: 7439 [2021-06-12 22:44:51,827 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 833.6ms TimeCoverageRelationStatistics Valid=286, Invalid=2794, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:44:51,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7439 states. [2021-06-12 22:44:51,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7439 to 5465. [2021-06-12 22:44:51,900 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) [2021-06-12 22:44:51,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5465 states to 5465 states and 18524 transitions. [2021-06-12 22:44:51,909 INFO L78 Accepts]: Start accepts. Automaton has 5465 states and 18524 transitions. Word has length 39 [2021-06-12 22:44:51,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:51,909 INFO L482 AbstractCegarLoop]: Abstraction has 5465 states and 18524 transitions. [2021-06-12 22:44:51,909 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) [2021-06-12 22:44:51,909 INFO L276 IsEmpty]: Start isEmpty. Operand 5465 states and 18524 transitions. [2021-06-12 22:44:51,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:51,916 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:51,916 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:51,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2021-06-12 22:44:51,916 INFO L430 AbstractCegarLoop]: === Iteration 419 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:51,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:51,916 INFO L82 PathProgramCache]: Analyzing trace with hash -625314166, now seen corresponding path program 419 times [2021-06-12 22:44:51,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:51,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206464133] [2021-06-12 22:44:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:52,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:52,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:52,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206464133] [2021-06-12 22:44:52,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206464133] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:52,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:52,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:52,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66245861] [2021-06-12 22:44:52,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:52,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:52,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:52,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:52,091 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) [2021-06-12 22:44:53,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:53,828 INFO L93 Difference]: Finished difference Result 8175 states and 27493 transitions. [2021-06-12 22:44:53,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-12 22:44:53,828 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 [2021-06-12 22:44:53,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:53,841 INFO L225 Difference]: With dead ends: 8175 [2021-06-12 22:44:53,841 INFO L226 Difference]: Without dead ends: 8115 [2021-06-12 22:44:53,841 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 917.4ms TimeCoverageRelationStatistics Valid=317, Invalid=3343, Unknown=0, NotChecked=0, Total=3660 [2021-06-12 22:44:53,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8115 states. [2021-06-12 22:44:53,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8115 to 5463. [2021-06-12 22:44:53,916 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) [2021-06-12 22:44:53,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 18519 transitions. [2021-06-12 22:44:53,925 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 18519 transitions. Word has length 39 [2021-06-12 22:44:53,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:53,925 INFO L482 AbstractCegarLoop]: Abstraction has 5463 states and 18519 transitions. [2021-06-12 22:44:53,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:53,925 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 18519 transitions. [2021-06-12 22:44:53,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:53,931 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:53,931 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:53,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable418 [2021-06-12 22:44:53,931 INFO L430 AbstractCegarLoop]: === Iteration 420 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:53,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:53,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1792249528, now seen corresponding path program 420 times [2021-06-12 22:44:53,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:53,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837394417] [2021-06-12 22:44:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:54,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:54,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837394417] [2021-06-12 22:44:54,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837394417] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:54,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:54,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:54,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66466039] [2021-06-12 22:44:54,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:54,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:54,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:54,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:54,105 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) [2021-06-12 22:44:55,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:55,526 INFO L93 Difference]: Finished difference Result 7463 states and 25083 transitions. [2021-06-12 22:44:55,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-12 22:44:55,526 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 [2021-06-12 22:44:55,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:55,537 INFO L225 Difference]: With dead ends: 7463 [2021-06-12 22:44:55,537 INFO L226 Difference]: Without dead ends: 7372 [2021-06-12 22:44:55,537 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 794.6ms TimeCoverageRelationStatistics Valid=271, Invalid=2699, Unknown=0, NotChecked=0, Total=2970 [2021-06-12 22:44:55,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7372 states. [2021-06-12 22:44:55,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7372 to 5463. [2021-06-12 22:44:55,603 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) [2021-06-12 22:44:55,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 18513 transitions. [2021-06-12 22:44:55,611 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 18513 transitions. Word has length 39 [2021-06-12 22:44:55,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:55,611 INFO L482 AbstractCegarLoop]: Abstraction has 5463 states and 18513 transitions. [2021-06-12 22:44:55,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:55,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 18513 transitions. [2021-06-12 22:44:55,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:55,617 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:55,617 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:55,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419 [2021-06-12 22:44:55,617 INFO L430 AbstractCegarLoop]: === Iteration 421 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:55,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:55,618 INFO L82 PathProgramCache]: Analyzing trace with hash 289767322, now seen corresponding path program 421 times [2021-06-12 22:44:55,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:55,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332398871] [2021-06-12 22:44:55,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:55,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:55,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332398871] [2021-06-12 22:44:55,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332398871] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:55,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:55,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:55,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520507406] [2021-06-12 22:44:55,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:55,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:55,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:55,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:55,788 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) [2021-06-12 22:44:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:57,422 INFO L93 Difference]: Finished difference Result 8096 states and 27315 transitions. [2021-06-12 22:44:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-12 22:44:57,422 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:57,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:57,434 INFO L225 Difference]: With dead ends: 8096 [2021-06-12 22:44:57,435 INFO L226 Difference]: Without dead ends: 7980 [2021-06-12 22:44:57,435 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 863.5ms TimeCoverageRelationStatistics Valid=296, Invalid=3126, Unknown=0, NotChecked=0, Total=3422 [2021-06-12 22:44:57,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7980 states. [2021-06-12 22:44:57,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7980 to 5417. [2021-06-12 22:44:57,508 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) [2021-06-12 22:44:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5417 states to 5417 states and 18388 transitions. [2021-06-12 22:44:57,516 INFO L78 Accepts]: Start accepts. Automaton has 5417 states and 18388 transitions. Word has length 39 [2021-06-12 22:44:57,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:57,516 INFO L482 AbstractCegarLoop]: Abstraction has 5417 states and 18388 transitions. [2021-06-12 22:44:57,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:57,516 INFO L276 IsEmpty]: Start isEmpty. Operand 5417 states and 18388 transitions. [2021-06-12 22:44:57,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:57,522 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:57,522 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:57,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable420 [2021-06-12 22:44:57,522 INFO L430 AbstractCegarLoop]: === Iteration 422 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:57,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:57,523 INFO L82 PathProgramCache]: Analyzing trace with hash 919000586, now seen corresponding path program 422 times [2021-06-12 22:44:57,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:57,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405929141] [2021-06-12 22:44:57,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:57,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:57,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405929141] [2021-06-12 22:44:57,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405929141] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:57,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:57,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:57,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488569431] [2021-06-12 22:44:57,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:57,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:57,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:57,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:57,695 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) [2021-06-12 22:44:58,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:44:58,765 INFO L93 Difference]: Finished difference Result 5910 states and 19840 transitions. [2021-06-12 22:44:58,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:44:58,766 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:44:58,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:44:58,774 INFO L225 Difference]: With dead ends: 5910 [2021-06-12 22:44:58,774 INFO L226 Difference]: Without dead ends: 5843 [2021-06-12 22:44:58,774 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 674.9ms TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2021-06-12 22:44:58,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5843 states. [2021-06-12 22:44:58,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5843 to 5435. [2021-06-12 22:44:58,830 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) [2021-06-12 22:44:58,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5435 states to 5435 states and 18435 transitions. [2021-06-12 22:44:58,839 INFO L78 Accepts]: Start accepts. Automaton has 5435 states and 18435 transitions. Word has length 39 [2021-06-12 22:44:58,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:44:58,839 INFO L482 AbstractCegarLoop]: Abstraction has 5435 states and 18435 transitions. [2021-06-12 22:44:58,839 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:44:58,839 INFO L276 IsEmpty]: Start isEmpty. Operand 5435 states and 18435 transitions. [2021-06-12 22:44:58,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:44:58,845 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:44:58,845 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:44:58,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable421 [2021-06-12 22:44:58,845 INFO L430 AbstractCegarLoop]: === Iteration 423 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:44:58,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:44:58,845 INFO L82 PathProgramCache]: Analyzing trace with hash 746857368, now seen corresponding path program 423 times [2021-06-12 22:44:58,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:44:58,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282035694] [2021-06-12 22:44:58,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:44:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:44:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:44:59,016 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:44:59,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282035694] [2021-06-12 22:44:59,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282035694] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:44:59,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:44:59,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:44:59,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880747009] [2021-06-12 22:44:59,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:44:59,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:44:59,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:44:59,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:44:59,016 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) [2021-06-12 22:45:00,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:00,013 INFO L93 Difference]: Finished difference Result 5870 states and 19710 transitions. [2021-06-12 22:45:00,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-12 22:45:00,013 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 [2021-06-12 22:45:00,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:00,022 INFO L225 Difference]: With dead ends: 5870 [2021-06-12 22:45:00,022 INFO L226 Difference]: Without dead ends: 5807 [2021-06-12 22:45:00,022 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 663.8ms TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:45:00,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5807 states. [2021-06-12 22:45:00,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5807 to 5467. [2021-06-12 22:45:00,080 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) [2021-06-12 22:45:00,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5467 states to 5467 states and 18519 transitions. [2021-06-12 22:45:00,088 INFO L78 Accepts]: Start accepts. Automaton has 5467 states and 18519 transitions. Word has length 39 [2021-06-12 22:45:00,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:00,088 INFO L482 AbstractCegarLoop]: Abstraction has 5467 states and 18519 transitions. [2021-06-12 22:45:00,088 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) [2021-06-12 22:45:00,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5467 states and 18519 transitions. [2021-06-12 22:45:00,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:00,094 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:00,094 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:00,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable422 [2021-06-12 22:45:00,094 INFO L430 AbstractCegarLoop]: === Iteration 424 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:00,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:00,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1055976788, now seen corresponding path program 424 times [2021-06-12 22:45:00,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:00,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424131867] [2021-06-12 22:45:00,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:00,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:00,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:00,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424131867] [2021-06-12 22:45:00,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424131867] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:00,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:00,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:00,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175684891] [2021-06-12 22:45:00,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:00,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:00,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:00,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:00,302 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) [2021-06-12 22:45:01,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:01,293 INFO L93 Difference]: Finished difference Result 5870 states and 19702 transitions. [2021-06-12 22:45:01,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-12 22:45:01,294 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:01,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:01,303 INFO L225 Difference]: With dead ends: 5870 [2021-06-12 22:45:01,303 INFO L226 Difference]: Without dead ends: 5735 [2021-06-12 22:45:01,303 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 682.4ms TimeCoverageRelationStatistics Valid=205, Invalid=1957, Unknown=0, NotChecked=0, Total=2162 [2021-06-12 22:45:01,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5735 states. [2021-06-12 22:45:01,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5735 to 5423. [2021-06-12 22:45:01,370 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) [2021-06-12 22:45:01,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5423 states to 5423 states and 18401 transitions. [2021-06-12 22:45:01,380 INFO L78 Accepts]: Start accepts. Automaton has 5423 states and 18401 transitions. Word has length 39 [2021-06-12 22:45:01,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:01,380 INFO L482 AbstractCegarLoop]: Abstraction has 5423 states and 18401 transitions. [2021-06-12 22:45:01,380 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) [2021-06-12 22:45:01,380 INFO L276 IsEmpty]: Start isEmpty. Operand 5423 states and 18401 transitions. [2021-06-12 22:45:01,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:01,386 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:01,386 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:01,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable423 [2021-06-12 22:45:01,387 INFO L430 AbstractCegarLoop]: === Iteration 425 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:01,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:01,387 INFO L82 PathProgramCache]: Analyzing trace with hash 776311452, now seen corresponding path program 425 times [2021-06-12 22:45:01,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:01,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290844547] [2021-06-12 22:45:01,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:01,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:01,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290844547] [2021-06-12 22:45:01,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290844547] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:01,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:01,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:01,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751668580] [2021-06-12 22:45:01,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:01,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:01,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:01,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:01,560 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) [2021-06-12 22:45:03,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:03,167 INFO L93 Difference]: Finished difference Result 5985 states and 20073 transitions. [2021-06-12 22:45:03,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-12 22:45:03,168 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:03,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:03,176 INFO L225 Difference]: With dead ends: 5985 [2021-06-12 22:45:03,176 INFO L226 Difference]: Without dead ends: 5918 [2021-06-12 22:45:03,177 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1056 ImplicationChecksByTransitivity, 1125.6ms TimeCoverageRelationStatistics Valid=393, Invalid=3639, Unknown=0, NotChecked=0, Total=4032 [2021-06-12 22:45:03,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5918 states. [2021-06-12 22:45:03,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5918 to 5449. [2021-06-12 22:45:03,236 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) [2021-06-12 22:45:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5449 states to 5449 states and 18472 transitions. [2021-06-12 22:45:03,244 INFO L78 Accepts]: Start accepts. Automaton has 5449 states and 18472 transitions. Word has length 39 [2021-06-12 22:45:03,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:03,244 INFO L482 AbstractCegarLoop]: Abstraction has 5449 states and 18472 transitions. [2021-06-12 22:45:03,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:03,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5449 states and 18472 transitions. [2021-06-12 22:45:03,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:03,250 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:03,250 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:03,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424 [2021-06-12 22:45:03,251 INFO L430 AbstractCegarLoop]: === Iteration 426 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:03,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:03,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1106102630, now seen corresponding path program 426 times [2021-06-12 22:45:03,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:03,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123697799] [2021-06-12 22:45:03,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:03,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:03,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123697799] [2021-06-12 22:45:03,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123697799] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:03,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:03,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:03,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696687477] [2021-06-12 22:45:03,430 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:03,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:03,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:03,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:03,431 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) [2021-06-12 22:45:05,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:05,291 INFO L93 Difference]: Finished difference Result 6109 states and 20370 transitions. [2021-06-12 22:45:05,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-12 22:45:05,291 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:05,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:05,300 INFO L225 Difference]: With dead ends: 6109 [2021-06-12 22:45:05,300 INFO L226 Difference]: Without dead ends: 6066 [2021-06-12 22:45:05,301 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1445 ImplicationChecksByTransitivity, 1298.4ms TimeCoverageRelationStatistics Valid=454, Invalid=4658, Unknown=0, NotChecked=0, Total=5112 [2021-06-12 22:45:05,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6066 states. [2021-06-12 22:45:05,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6066 to 5455. [2021-06-12 22:45:05,364 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) [2021-06-12 22:45:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5455 states to 5455 states and 18485 transitions. [2021-06-12 22:45:05,373 INFO L78 Accepts]: Start accepts. Automaton has 5455 states and 18485 transitions. Word has length 39 [2021-06-12 22:45:05,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:05,373 INFO L482 AbstractCegarLoop]: Abstraction has 5455 states and 18485 transitions. [2021-06-12 22:45:05,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:05,373 INFO L276 IsEmpty]: Start isEmpty. Operand 5455 states and 18485 transitions. [2021-06-12 22:45:05,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:05,379 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:05,379 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:05,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable425 [2021-06-12 22:45:05,379 INFO L430 AbstractCegarLoop]: === Iteration 427 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:05,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:05,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1408266364, now seen corresponding path program 427 times [2021-06-12 22:45:05,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:05,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571369208] [2021-06-12 22:45:05,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:05,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:05,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:05,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571369208] [2021-06-12 22:45:05,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571369208] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:05,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:05,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:05,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622726951] [2021-06-12 22:45:05,560 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:05,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:05,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:05,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:05,560 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) [2021-06-12 22:45:07,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:07,427 INFO L93 Difference]: Finished difference Result 6058 states and 20247 transitions. [2021-06-12 22:45:07,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-12 22:45:07,427 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:07,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:07,437 INFO L225 Difference]: With dead ends: 6058 [2021-06-12 22:45:07,437 INFO L226 Difference]: Without dead ends: 5994 [2021-06-12 22:45:07,437 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 1325.1ms TimeCoverageRelationStatistics Valid=423, Invalid=4269, Unknown=0, NotChecked=0, Total=4692 [2021-06-12 22:45:07,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5994 states. [2021-06-12 22:45:07,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5994 to 5433. [2021-06-12 22:45:07,507 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) [2021-06-12 22:45:07,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5433 states to 5433 states and 18432 transitions. [2021-06-12 22:45:07,517 INFO L78 Accepts]: Start accepts. Automaton has 5433 states and 18432 transitions. Word has length 39 [2021-06-12 22:45:07,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:07,517 INFO L482 AbstractCegarLoop]: Abstraction has 5433 states and 18432 transitions. [2021-06-12 22:45:07,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:07,517 INFO L276 IsEmpty]: Start isEmpty. Operand 5433 states and 18432 transitions. [2021-06-12 22:45:07,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:07,524 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:07,524 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:07,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable426 [2021-06-12 22:45:07,524 INFO L430 AbstractCegarLoop]: === Iteration 428 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:07,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:07,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1324240754, now seen corresponding path program 428 times [2021-06-12 22:45:07,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:07,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817837024] [2021-06-12 22:45:07,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:07,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:07,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817837024] [2021-06-12 22:45:07,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817837024] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:07,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:07,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:07,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015522481] [2021-06-12 22:45:07,739 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:07,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:07,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:07,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:07,739 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) [2021-06-12 22:45:08,729 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2021-06-12 22:45:09,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:09,554 INFO L93 Difference]: Finished difference Result 5985 states and 20067 transitions. [2021-06-12 22:45:09,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-12 22:45:09,554 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:09,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:09,563 INFO L225 Difference]: With dead ends: 5985 [2021-06-12 22:45:09,564 INFO L226 Difference]: Without dead ends: 5918 [2021-06-12 22:45:09,564 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 1265.7ms TimeCoverageRelationStatistics Valid=392, Invalid=3768, Unknown=0, NotChecked=0, Total=4160 [2021-06-12 22:45:09,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5918 states. [2021-06-12 22:45:09,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5918 to 5457. [2021-06-12 22:45:09,629 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) [2021-06-12 22:45:09,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5457 states to 5457 states and 18510 transitions. [2021-06-12 22:45:09,639 INFO L78 Accepts]: Start accepts. Automaton has 5457 states and 18510 transitions. Word has length 39 [2021-06-12 22:45:09,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:09,639 INFO L482 AbstractCegarLoop]: Abstraction has 5457 states and 18510 transitions. [2021-06-12 22:45:09,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:09,639 INFO L276 IsEmpty]: Start isEmpty. Operand 5457 states and 18510 transitions. [2021-06-12 22:45:09,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:09,645 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:09,645 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:09,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable427 [2021-06-12 22:45:09,645 INFO L430 AbstractCegarLoop]: === Iteration 429 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:09,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:09,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1496383972, now seen corresponding path program 429 times [2021-06-12 22:45:09,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:09,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144604847] [2021-06-12 22:45:09,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:09,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:09,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144604847] [2021-06-12 22:45:09,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144604847] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:09,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:09,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:09,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615026781] [2021-06-12 22:45:09,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:09,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:09,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:09,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:09,843 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) [2021-06-12 22:45:11,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:11,264 INFO L93 Difference]: Finished difference Result 5988 states and 20026 transitions. [2021-06-12 22:45:11,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-12 22:45:11,265 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:11,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:11,274 INFO L225 Difference]: With dead ends: 5988 [2021-06-12 22:45:11,274 INFO L226 Difference]: Without dead ends: 5925 [2021-06-12 22:45:11,274 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 1007.3ms TimeCoverageRelationStatistics Valid=350, Invalid=3190, Unknown=0, NotChecked=0, Total=3540 [2021-06-12 22:45:11,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5925 states. [2021-06-12 22:45:11,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5925 to 5457. [2021-06-12 22:45:11,339 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) [2021-06-12 22:45:11,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5457 states to 5457 states and 18506 transitions. [2021-06-12 22:45:11,349 INFO L78 Accepts]: Start accepts. Automaton has 5457 states and 18506 transitions. Word has length 39 [2021-06-12 22:45:11,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:11,349 INFO L482 AbstractCegarLoop]: Abstraction has 5457 states and 18506 transitions. [2021-06-12 22:45:11,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:11,350 INFO L276 IsEmpty]: Start isEmpty. Operand 5457 states and 18506 transitions. [2021-06-12 22:45:11,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:11,357 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:11,357 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:11,357 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable428 [2021-06-12 22:45:11,357 INFO L430 AbstractCegarLoop]: === Iteration 430 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:11,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:11,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1762427324, now seen corresponding path program 430 times [2021-06-12 22:45:11,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:11,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986423954] [2021-06-12 22:45:11,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:11,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:11,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:11,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986423954] [2021-06-12 22:45:11,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986423954] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:11,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:11,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:11,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322015511] [2021-06-12 22:45:11,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:11,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:11,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:11,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:11,558 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) [2021-06-12 22:45:13,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:13,444 INFO L93 Difference]: Finished difference Result 6136 states and 20400 transitions. [2021-06-12 22:45:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-12 22:45:13,444 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:13,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:13,454 INFO L225 Difference]: With dead ends: 6136 [2021-06-12 22:45:13,454 INFO L226 Difference]: Without dead ends: 6093 [2021-06-12 22:45:13,454 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1387 ImplicationChecksByTransitivity, 1323.1ms TimeCoverageRelationStatistics Valid=429, Invalid=4541, Unknown=0, NotChecked=0, Total=4970 [2021-06-12 22:45:13,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6093 states. [2021-06-12 22:45:13,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6093 to 5469. [2021-06-12 22:45:13,523 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) [2021-06-12 22:45:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5469 states to 5469 states and 18542 transitions. [2021-06-12 22:45:13,533 INFO L78 Accepts]: Start accepts. Automaton has 5469 states and 18542 transitions. Word has length 39 [2021-06-12 22:45:13,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:13,533 INFO L482 AbstractCegarLoop]: Abstraction has 5469 states and 18542 transitions. [2021-06-12 22:45:13,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:13,533 INFO L276 IsEmpty]: Start isEmpty. Operand 5469 states and 18542 transitions. [2021-06-12 22:45:13,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:13,540 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:13,540 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:13,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable429 [2021-06-12 22:45:13,540 INFO L430 AbstractCegarLoop]: === Iteration 431 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:13,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:13,541 INFO L82 PathProgramCache]: Analyzing trace with hash -18170978, now seen corresponding path program 431 times [2021-06-12 22:45:13,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:13,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100868504] [2021-06-12 22:45:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:13,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:13,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:13,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100868504] [2021-06-12 22:45:13,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100868504] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:13,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:13,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:13,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104459821] [2021-06-12 22:45:13,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:13,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:13,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:13,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:13,754 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) [2021-06-12 22:45:15,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:15,588 INFO L93 Difference]: Finished difference Result 6124 states and 20362 transitions. [2021-06-12 22:45:15,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-12 22:45:15,588 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:15,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:15,598 INFO L225 Difference]: With dead ends: 6124 [2021-06-12 22:45:15,598 INFO L226 Difference]: Without dead ends: 6072 [2021-06-12 22:45:15,598 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 1316.4ms TimeCoverageRelationStatistics Valid=418, Invalid=4412, Unknown=0, NotChecked=0, Total=4830 [2021-06-12 22:45:15,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6072 states. [2021-06-12 22:45:15,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6072 to 5461. [2021-06-12 22:45:15,660 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) [2021-06-12 22:45:15,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5461 states to 5461 states and 18522 transitions. [2021-06-12 22:45:15,668 INFO L78 Accepts]: Start accepts. Automaton has 5461 states and 18522 transitions. Word has length 39 [2021-06-12 22:45:15,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:15,668 INFO L482 AbstractCegarLoop]: Abstraction has 5461 states and 18522 transitions. [2021-06-12 22:45:15,668 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) [2021-06-12 22:45:15,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5461 states and 18522 transitions. [2021-06-12 22:45:15,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:15,674 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:15,674 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:15,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable430 [2021-06-12 22:45:15,674 INFO L430 AbstractCegarLoop]: === Iteration 432 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:15,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:15,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1614056402, now seen corresponding path program 432 times [2021-06-12 22:45:15,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:15,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356048359] [2021-06-12 22:45:15,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:15,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:15,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356048359] [2021-06-12 22:45:15,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356048359] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:15,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:15,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:15,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445517202] [2021-06-12 22:45:15,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:15,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:15,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:15,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:15,861 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) [2021-06-12 22:45:17,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:17,224 INFO L93 Difference]: Finished difference Result 6057 states and 20163 transitions. [2021-06-12 22:45:17,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-12 22:45:17,224 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:17,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:17,233 INFO L225 Difference]: With dead ends: 6057 [2021-06-12 22:45:17,234 INFO L226 Difference]: Without dead ends: 6002 [2021-06-12 22:45:17,234 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 973.5ms TimeCoverageRelationStatistics Valid=349, Invalid=3191, Unknown=0, NotChecked=0, Total=3540 [2021-06-12 22:45:17,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2021-06-12 22:45:17,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 5463. [2021-06-12 22:45:17,295 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) [2021-06-12 22:45:17,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 18525 transitions. [2021-06-12 22:45:17,303 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 18525 transitions. Word has length 39 [2021-06-12 22:45:17,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:17,304 INFO L482 AbstractCegarLoop]: Abstraction has 5463 states and 18525 transitions. [2021-06-12 22:45:17,304 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) [2021-06-12 22:45:17,304 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 18525 transitions. [2021-06-12 22:45:17,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:17,310 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:17,310 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:17,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable431 [2021-06-12 22:45:17,310 INFO L430 AbstractCegarLoop]: === Iteration 433 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:17,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:17,310 INFO L82 PathProgramCache]: Analyzing trace with hash -441404180, now seen corresponding path program 433 times [2021-06-12 22:45:17,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:17,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911303654] [2021-06-12 22:45:17,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:17,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:17,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:17,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911303654] [2021-06-12 22:45:17,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911303654] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:17,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:17,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:17,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862049397] [2021-06-12 22:45:17,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:17,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:17,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:17,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:17,481 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) [2021-06-12 22:45:18,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:18,746 INFO L93 Difference]: Finished difference Result 5995 states and 20018 transitions. [2021-06-12 22:45:18,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-12 22:45:18,746 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:18,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:18,755 INFO L225 Difference]: With dead ends: 5995 [2021-06-12 22:45:18,755 INFO L226 Difference]: Without dead ends: 5949 [2021-06-12 22:45:18,756 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 897.9ms TimeCoverageRelationStatistics Valid=308, Invalid=2772, Unknown=0, NotChecked=0, Total=3080 [2021-06-12 22:45:18,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5949 states. [2021-06-12 22:45:18,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5949 to 5467. [2021-06-12 22:45:18,816 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) [2021-06-12 22:45:18,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5467 states to 5467 states and 18533 transitions. [2021-06-12 22:45:18,825 INFO L78 Accepts]: Start accepts. Automaton has 5467 states and 18533 transitions. Word has length 39 [2021-06-12 22:45:18,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:18,825 INFO L482 AbstractCegarLoop]: Abstraction has 5467 states and 18533 transitions. [2021-06-12 22:45:18,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:18,825 INFO L276 IsEmpty]: Start isEmpty. Operand 5467 states and 18533 transitions. [2021-06-12 22:45:18,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:18,831 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:18,831 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:18,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable432 [2021-06-12 22:45:18,831 INFO L430 AbstractCegarLoop]: === Iteration 434 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:18,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:18,831 INFO L82 PathProgramCache]: Analyzing trace with hash -688870342, now seen corresponding path program 434 times [2021-06-12 22:45:18,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:18,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69194417] [2021-06-12 22:45:18,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:19,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:19,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:19,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69194417] [2021-06-12 22:45:19,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69194417] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:19,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:19,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:19,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078021686] [2021-06-12 22:45:19,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:19,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:19,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:19,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:19,013 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) [2021-06-12 22:45:20,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:20,342 INFO L93 Difference]: Finished difference Result 5988 states and 19995 transitions. [2021-06-12 22:45:20,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-12 22:45:20,343 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:20,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:20,351 INFO L225 Difference]: With dead ends: 5988 [2021-06-12 22:45:20,351 INFO L226 Difference]: Without dead ends: 5939 [2021-06-12 22:45:20,352 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 948.6ms TimeCoverageRelationStatistics Valid=321, Invalid=2871, Unknown=0, NotChecked=0, Total=3192 [2021-06-12 22:45:20,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5939 states. [2021-06-12 22:45:20,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5939 to 5457. [2021-06-12 22:45:20,412 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) [2021-06-12 22:45:20,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5457 states to 5457 states and 18514 transitions. [2021-06-12 22:45:20,420 INFO L78 Accepts]: Start accepts. Automaton has 5457 states and 18514 transitions. Word has length 39 [2021-06-12 22:45:20,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:20,421 INFO L482 AbstractCegarLoop]: Abstraction has 5457 states and 18514 transitions. [2021-06-12 22:45:20,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:20,421 INFO L276 IsEmpty]: Start isEmpty. Operand 5457 states and 18514 transitions. [2021-06-12 22:45:20,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:20,427 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:20,427 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:20,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable433 [2021-06-12 22:45:20,427 INFO L430 AbstractCegarLoop]: === Iteration 435 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:20,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:20,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1167141254, now seen corresponding path program 435 times [2021-06-12 22:45:20,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:20,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801158450] [2021-06-12 22:45:20,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:20,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:20,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:20,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801158450] [2021-06-12 22:45:20,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801158450] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:20,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:20,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:20,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624174582] [2021-06-12 22:45:20,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:20,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:20,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:20,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:20,613 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) [2021-06-12 22:45:22,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:22,150 INFO L93 Difference]: Finished difference Result 5919 states and 19880 transitions. [2021-06-12 22:45:22,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-12 22:45:22,151 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:22,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:22,159 INFO L225 Difference]: With dead ends: 5919 [2021-06-12 22:45:22,159 INFO L226 Difference]: Without dead ends: 5852 [2021-06-12 22:45:22,159 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 1014.2ms TimeCoverageRelationStatistics Valid=329, Invalid=3093, Unknown=0, NotChecked=0, Total=3422 [2021-06-12 22:45:22,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5852 states. [2021-06-12 22:45:22,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5852 to 5475. [2021-06-12 22:45:22,217 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) [2021-06-12 22:45:22,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 18562 transitions. [2021-06-12 22:45:22,226 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 18562 transitions. Word has length 39 [2021-06-12 22:45:22,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:22,226 INFO L482 AbstractCegarLoop]: Abstraction has 5475 states and 18562 transitions. [2021-06-12 22:45:22,226 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:22,226 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 18562 transitions. [2021-06-12 22:45:22,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:22,232 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:22,232 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:22,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable434 [2021-06-12 22:45:22,232 INFO L430 AbstractCegarLoop]: === Iteration 436 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:22,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:22,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1245411960, now seen corresponding path program 436 times [2021-06-12 22:45:22,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:22,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590724409] [2021-06-12 22:45:22,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:22,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:22,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:22,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590724409] [2021-06-12 22:45:22,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590724409] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:22,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:22,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:22,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32443733] [2021-06-12 22:45:22,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:22,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:22,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:22,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:22,414 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) [2021-06-12 22:45:24,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:24,273 INFO L93 Difference]: Finished difference Result 6037 states and 20158 transitions. [2021-06-12 22:45:24,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-12 22:45:24,274 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:24,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:24,282 INFO L225 Difference]: With dead ends: 6037 [2021-06-12 22:45:24,283 INFO L226 Difference]: Without dead ends: 5994 [2021-06-12 22:45:24,283 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 1208.0ms TimeCoverageRelationStatistics Valid=381, Invalid=3909, Unknown=0, NotChecked=0, Total=4290 [2021-06-12 22:45:24,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5994 states. [2021-06-12 22:45:24,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5994 to 5481. [2021-06-12 22:45:24,343 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) [2021-06-12 22:45:24,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 18575 transitions. [2021-06-12 22:45:24,352 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 18575 transitions. Word has length 39 [2021-06-12 22:45:24,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:24,352 INFO L482 AbstractCegarLoop]: Abstraction has 5481 states and 18575 transitions. [2021-06-12 22:45:24,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:24,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 18575 transitions. [2021-06-12 22:45:24,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:24,358 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:24,358 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:24,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable435 [2021-06-12 22:45:24,358 INFO L430 AbstractCegarLoop]: === Iteration 437 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:24,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:24,358 INFO L82 PathProgramCache]: Analyzing trace with hash -535186342, now seen corresponding path program 437 times [2021-06-12 22:45:24,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:24,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125431771] [2021-06-12 22:45:24,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:24,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:24,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125431771] [2021-06-12 22:45:24,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125431771] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:24,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:24,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:24,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930482279] [2021-06-12 22:45:24,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:24,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:24,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:24,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:24,532 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) [2021-06-12 22:45:26,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:26,164 INFO L93 Difference]: Finished difference Result 5986 states and 20035 transitions. [2021-06-12 22:45:26,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-12 22:45:26,164 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:26,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:26,172 INFO L225 Difference]: With dead ends: 5986 [2021-06-12 22:45:26,172 INFO L226 Difference]: Without dead ends: 5922 [2021-06-12 22:45:26,173 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 1108.3ms TimeCoverageRelationStatistics Valid=350, Invalid=3556, Unknown=0, NotChecked=0, Total=3906 [2021-06-12 22:45:26,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5922 states. [2021-06-12 22:45:26,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5922 to 5457. [2021-06-12 22:45:26,232 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) [2021-06-12 22:45:26,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5457 states to 5457 states and 18514 transitions. [2021-06-12 22:45:26,240 INFO L78 Accepts]: Start accepts. Automaton has 5457 states and 18514 transitions. Word has length 39 [2021-06-12 22:45:26,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:26,240 INFO L482 AbstractCegarLoop]: Abstraction has 5457 states and 18514 transitions. [2021-06-12 22:45:26,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:26,240 INFO L276 IsEmpty]: Start isEmpty. Operand 5457 states and 18514 transitions. [2021-06-12 22:45:26,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:26,247 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:26,247 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:26,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable436 [2021-06-12 22:45:26,247 INFO L430 AbstractCegarLoop]: === Iteration 438 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:26,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:26,247 INFO L82 PathProgramCache]: Analyzing trace with hash -365207204, now seen corresponding path program 438 times [2021-06-12 22:45:26,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:26,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055662145] [2021-06-12 22:45:26,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:26,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:26,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055662145] [2021-06-12 22:45:26,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055662145] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:26,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:26,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:26,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464129145] [2021-06-12 22:45:26,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:26,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:26,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:26,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:26,429 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) [2021-06-12 22:45:27,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:27,763 INFO L93 Difference]: Finished difference Result 5895 states and 19810 transitions. [2021-06-12 22:45:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-12 22:45:27,763 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:27,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:27,773 INFO L225 Difference]: With dead ends: 5895 [2021-06-12 22:45:27,773 INFO L226 Difference]: Without dead ends: 5828 [2021-06-12 22:45:27,773 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 896.0ms TimeCoverageRelationStatistics Valid=296, Invalid=2896, Unknown=0, NotChecked=0, Total=3192 [2021-06-12 22:45:27,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5828 states. [2021-06-12 22:45:27,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5828 to 5475. [2021-06-12 22:45:27,836 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) [2021-06-12 22:45:27,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 18556 transitions. [2021-06-12 22:45:27,846 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 18556 transitions. Word has length 39 [2021-06-12 22:45:27,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:27,846 INFO L482 AbstractCegarLoop]: Abstraction has 5475 states and 18556 transitions. [2021-06-12 22:45:27,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:27,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 18556 transitions. [2021-06-12 22:45:27,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:27,853 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:27,853 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:27,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable437 [2021-06-12 22:45:27,854 INFO L430 AbstractCegarLoop]: === Iteration 439 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:27,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:27,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1337065158, now seen corresponding path program 439 times [2021-06-12 22:45:27,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:27,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239124715] [2021-06-12 22:45:27,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:28,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:28,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239124715] [2021-06-12 22:45:28,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239124715] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:28,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:28,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:28,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084746853] [2021-06-12 22:45:28,029 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:28,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:28,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:28,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:28,030 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) [2021-06-12 22:45:29,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:29,153 INFO L93 Difference]: Finished difference Result 5898 states and 19767 transitions. [2021-06-12 22:45:29,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:45:29,154 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:29,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:29,162 INFO L225 Difference]: With dead ends: 5898 [2021-06-12 22:45:29,163 INFO L226 Difference]: Without dead ends: 5855 [2021-06-12 22:45:29,163 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 749.3ms TimeCoverageRelationStatistics Valid=245, Invalid=2305, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:45:29,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5855 states. [2021-06-12 22:45:29,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5855 to 5493. [2021-06-12 22:45:29,224 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) [2021-06-12 22:45:29,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 18595 transitions. [2021-06-12 22:45:29,233 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 18595 transitions. Word has length 39 [2021-06-12 22:45:29,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:29,233 INFO L482 AbstractCegarLoop]: Abstraction has 5493 states and 18595 transitions. [2021-06-12 22:45:29,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:29,233 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 18595 transitions. [2021-06-12 22:45:29,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:29,239 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:29,239 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:29,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable438 [2021-06-12 22:45:29,239 INFO L430 AbstractCegarLoop]: === Iteration 440 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:29,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:29,240 INFO L82 PathProgramCache]: Analyzing trace with hash -507533988, now seen corresponding path program 440 times [2021-06-12 22:45:29,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:29,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827589615] [2021-06-12 22:45:29,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:29,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:29,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:29,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827589615] [2021-06-12 22:45:29,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827589615] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:29,442 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:29,442 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:29,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124022670] [2021-06-12 22:45:29,442 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:29,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:29,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:29,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:29,443 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) [2021-06-12 22:45:30,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:30,598 INFO L93 Difference]: Finished difference Result 5853 states and 19663 transitions. [2021-06-12 22:45:30,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:45:30,599 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 [2021-06-12 22:45:30,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:30,607 INFO L225 Difference]: With dead ends: 5853 [2021-06-12 22:45:30,607 INFO L226 Difference]: Without dead ends: 5790 [2021-06-12 22:45:30,608 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 795.4ms TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:45:30,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5790 states. [2021-06-12 22:45:30,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5790 to 5475. [2021-06-12 22:45:30,667 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) [2021-06-12 22:45:30,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 18550 transitions. [2021-06-12 22:45:30,675 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 18550 transitions. Word has length 39 [2021-06-12 22:45:30,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:30,675 INFO L482 AbstractCegarLoop]: Abstraction has 5475 states and 18550 transitions. [2021-06-12 22:45:30,675 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) [2021-06-12 22:45:30,675 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 18550 transitions. [2021-06-12 22:45:30,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:30,681 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:30,681 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:30,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable439 [2021-06-12 22:45:30,681 INFO L430 AbstractCegarLoop]: === Iteration 441 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:30,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:30,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1538923080, now seen corresponding path program 441 times [2021-06-12 22:45:30,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:30,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304056180] [2021-06-12 22:45:30,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:30,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:30,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:30,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304056180] [2021-06-12 22:45:30,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304056180] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:30,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:30,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:30,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917848734] [2021-06-12 22:45:30,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:30,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:30,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:30,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:30,861 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) [2021-06-12 22:45:32,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:32,463 INFO L93 Difference]: Finished difference Result 6043 states and 20131 transitions. [2021-06-12 22:45:32,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-12 22:45:32,463 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:32,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:32,472 INFO L225 Difference]: With dead ends: 6043 [2021-06-12 22:45:32,472 INFO L226 Difference]: Without dead ends: 6000 [2021-06-12 22:45:32,472 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 1038.0ms TimeCoverageRelationStatistics Valid=328, Invalid=3454, Unknown=0, NotChecked=0, Total=3782 [2021-06-12 22:45:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6000 states. [2021-06-12 22:45:32,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6000 to 5484. [2021-06-12 22:45:32,533 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) [2021-06-12 22:45:32,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5484 states to 5484 states and 18574 transitions. [2021-06-12 22:45:32,541 INFO L78 Accepts]: Start accepts. Automaton has 5484 states and 18574 transitions. Word has length 39 [2021-06-12 22:45:32,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:32,542 INFO L482 AbstractCegarLoop]: Abstraction has 5484 states and 18574 transitions. [2021-06-12 22:45:32,542 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 5484 states and 18574 transitions. [2021-06-12 22:45:32,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:32,548 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:32,548 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:32,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable440 [2021-06-12 22:45:32,548 INFO L430 AbstractCegarLoop]: === Iteration 442 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:32,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:32,548 INFO L82 PathProgramCache]: Analyzing trace with hash 975445914, now seen corresponding path program 442 times [2021-06-12 22:45:32,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:32,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266321647] [2021-06-12 22:45:32,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:32,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:32,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266321647] [2021-06-12 22:45:32,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266321647] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:32,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:32,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:32,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007475175] [2021-06-12 22:45:32,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:32,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:32,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:32,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:32,723 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) [2021-06-12 22:45:34,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:34,314 INFO L93 Difference]: Finished difference Result 6046 states and 20132 transitions. [2021-06-12 22:45:34,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-12 22:45:34,314 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:34,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:34,323 INFO L225 Difference]: With dead ends: 6046 [2021-06-12 22:45:34,324 INFO L226 Difference]: Without dead ends: 5994 [2021-06-12 22:45:34,324 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 1040.0ms TimeCoverageRelationStatistics Valid=314, Invalid=3346, Unknown=0, NotChecked=0, Total=3660 [2021-06-12 22:45:34,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5994 states. [2021-06-12 22:45:34,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5994 to 5478. [2021-06-12 22:45:34,388 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) [2021-06-12 22:45:34,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 18558 transitions. [2021-06-12 22:45:34,397 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 18558 transitions. Word has length 39 [2021-06-12 22:45:34,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:34,397 INFO L482 AbstractCegarLoop]: Abstraction has 5478 states and 18558 transitions. [2021-06-12 22:45:34,397 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) [2021-06-12 22:45:34,397 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 18558 transitions. [2021-06-12 22:45:34,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:34,403 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:34,403 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:34,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable441 [2021-06-12 22:45:34,404 INFO L430 AbstractCegarLoop]: === Iteration 443 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:34,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:34,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1218624986, now seen corresponding path program 443 times [2021-06-12 22:45:34,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:34,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029178126] [2021-06-12 22:45:34,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:34,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:34,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029178126] [2021-06-12 22:45:34,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029178126] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:34,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:34,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:34,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574370172] [2021-06-12 22:45:34,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:34,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:34,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:34,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:34,581 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) [2021-06-12 22:45:35,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:35,745 INFO L93 Difference]: Finished difference Result 5985 states and 19951 transitions. [2021-06-12 22:45:35,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:45:35,745 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 [2021-06-12 22:45:35,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:35,754 INFO L225 Difference]: With dead ends: 5985 [2021-06-12 22:45:35,754 INFO L226 Difference]: Without dead ends: 5942 [2021-06-12 22:45:35,755 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 775.8ms TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:45:35,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5942 states. [2021-06-12 22:45:35,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5942 to 5487. [2021-06-12 22:45:35,815 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) [2021-06-12 22:45:35,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5487 states to 5487 states and 18579 transitions. [2021-06-12 22:45:35,824 INFO L78 Accepts]: Start accepts. Automaton has 5487 states and 18579 transitions. Word has length 39 [2021-06-12 22:45:35,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:35,824 INFO L482 AbstractCegarLoop]: Abstraction has 5487 states and 18579 transitions. [2021-06-12 22:45:35,824 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:35,824 INFO L276 IsEmpty]: Start isEmpty. Operand 5487 states and 18579 transitions. [2021-06-12 22:45:35,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:35,830 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:35,830 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:35,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable442 [2021-06-12 22:45:35,831 INFO L430 AbstractCegarLoop]: === Iteration 444 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:35,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:35,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1326235174, now seen corresponding path program 444 times [2021-06-12 22:45:35,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:35,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155504310] [2021-06-12 22:45:35,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:36,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:36,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155504310] [2021-06-12 22:45:36,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155504310] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:36,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:36,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:36,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371206558] [2021-06-12 22:45:36,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:36,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:36,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:36,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:36,014 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) [2021-06-12 22:45:37,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:37,228 INFO L93 Difference]: Finished difference Result 5954 states and 19884 transitions. [2021-06-12 22:45:37,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-12 22:45:37,228 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:37,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:37,238 INFO L225 Difference]: With dead ends: 5954 [2021-06-12 22:45:37,238 INFO L226 Difference]: Without dead ends: 5903 [2021-06-12 22:45:37,238 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 825.3ms TimeCoverageRelationStatistics Valid=251, Invalid=2401, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:45:37,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2021-06-12 22:45:37,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 5481. [2021-06-12 22:45:37,297 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) [2021-06-12 22:45:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 18563 transitions. [2021-06-12 22:45:37,307 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 18563 transitions. Word has length 39 [2021-06-12 22:45:37,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:37,307 INFO L482 AbstractCegarLoop]: Abstraction has 5481 states and 18563 transitions. [2021-06-12 22:45:37,307 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) [2021-06-12 22:45:37,307 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 18563 transitions. [2021-06-12 22:45:37,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:37,314 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:37,314 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:37,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable443 [2021-06-12 22:45:37,314 INFO L430 AbstractCegarLoop]: === Iteration 445 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:37,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:37,314 INFO L82 PathProgramCache]: Analyzing trace with hash -709016772, now seen corresponding path program 445 times [2021-06-12 22:45:37,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:37,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019738425] [2021-06-12 22:45:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:37,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:37,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:37,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019738425] [2021-06-12 22:45:37,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019738425] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:37,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:37,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:37,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884378021] [2021-06-12 22:45:37,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:37,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:37,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:37,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:37,488 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) [2021-06-12 22:45:38,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:38,555 INFO L93 Difference]: Finished difference Result 5920 states and 19794 transitions. [2021-06-12 22:45:38,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-12 22:45:38,555 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:38,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:38,564 INFO L225 Difference]: With dead ends: 5920 [2021-06-12 22:45:38,564 INFO L226 Difference]: Without dead ends: 5874 [2021-06-12 22:45:38,565 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 696.4ms TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2021-06-12 22:45:38,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2021-06-12 22:45:38,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 5488. [2021-06-12 22:45:38,623 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) [2021-06-12 22:45:38,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 18578 transitions. [2021-06-12 22:45:38,632 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 18578 transitions. Word has length 39 [2021-06-12 22:45:38,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:38,632 INFO L482 AbstractCegarLoop]: Abstraction has 5488 states and 18578 transitions. [2021-06-12 22:45:38,632 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:38,632 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 18578 transitions. [2021-06-12 22:45:38,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:38,638 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:38,638 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:38,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable444 [2021-06-12 22:45:38,638 INFO L430 AbstractCegarLoop]: === Iteration 446 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:38,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:38,638 INFO L82 PathProgramCache]: Analyzing trace with hash -2144084262, now seen corresponding path program 446 times [2021-06-12 22:45:38,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:38,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493888762] [2021-06-12 22:45:38,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:38,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:38,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493888762] [2021-06-12 22:45:38,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493888762] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:38,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:38,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:38,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458879617] [2021-06-12 22:45:38,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:38,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:38,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:38,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:38,840 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) [2021-06-12 22:45:39,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:39,997 INFO L93 Difference]: Finished difference Result 5886 states and 19719 transitions. [2021-06-12 22:45:39,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 22:45:39,998 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 [2021-06-12 22:45:39,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:40,007 INFO L225 Difference]: With dead ends: 5886 [2021-06-12 22:45:40,007 INFO L226 Difference]: Without dead ends: 5825 [2021-06-12 22:45:40,007 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 792.3ms TimeCoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:45:40,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5825 states. [2021-06-12 22:45:40,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5825 to 5472. [2021-06-12 22:45:40,067 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) [2021-06-12 22:45:40,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5472 states to 5472 states and 18546 transitions. [2021-06-12 22:45:40,075 INFO L78 Accepts]: Start accepts. Automaton has 5472 states and 18546 transitions. Word has length 39 [2021-06-12 22:45:40,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:40,075 INFO L482 AbstractCegarLoop]: Abstraction has 5472 states and 18546 transitions. [2021-06-12 22:45:40,075 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) [2021-06-12 22:45:40,075 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states and 18546 transitions. [2021-06-12 22:45:40,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:40,082 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:40,082 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:40,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable445 [2021-06-12 22:45:40,082 INFO L430 AbstractCegarLoop]: === Iteration 447 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:40,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:40,082 INFO L82 PathProgramCache]: Analyzing trace with hash 750644026, now seen corresponding path program 447 times [2021-06-12 22:45:40,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:40,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142480796] [2021-06-12 22:45:40,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:40,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:40,263 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:40,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142480796] [2021-06-12 22:45:40,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142480796] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:40,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:40,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:40,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385811736] [2021-06-12 22:45:40,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:40,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:40,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:40,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:40,264 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) [2021-06-12 22:45:41,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:41,476 INFO L93 Difference]: Finished difference Result 5863 states and 19686 transitions. [2021-06-12 22:45:41,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-12 22:45:41,477 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:41,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:41,485 INFO L225 Difference]: With dead ends: 5863 [2021-06-12 22:45:41,486 INFO L226 Difference]: Without dead ends: 5800 [2021-06-12 22:45:41,486 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 826.5ms TimeCoverageRelationStatistics Valid=283, Invalid=2579, Unknown=0, NotChecked=0, Total=2862 [2021-06-12 22:45:41,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5800 states. [2021-06-12 22:45:41,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5800 to 5476. [2021-06-12 22:45:41,543 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) [2021-06-12 22:45:41,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5476 states to 5476 states and 18556 transitions. [2021-06-12 22:45:41,552 INFO L78 Accepts]: Start accepts. Automaton has 5476 states and 18556 transitions. Word has length 39 [2021-06-12 22:45:41,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:41,552 INFO L482 AbstractCegarLoop]: Abstraction has 5476 states and 18556 transitions. [2021-06-12 22:45:41,552 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:41,552 INFO L276 IsEmpty]: Start isEmpty. Operand 5476 states and 18556 transitions. [2021-06-12 22:45:41,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:41,558 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:41,558 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:41,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable446 [2021-06-12 22:45:41,558 INFO L430 AbstractCegarLoop]: === Iteration 448 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:41,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:41,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1333106004, now seen corresponding path program 448 times [2021-06-12 22:45:41,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:41,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71415834] [2021-06-12 22:45:41,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:41,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:41,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:41,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71415834] [2021-06-12 22:45:41,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71415834] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:41,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:41,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:41,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567269521] [2021-06-12 22:45:41,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:41,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:41,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:41,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:41,732 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) [2021-06-12 22:45:42,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:42,905 INFO L93 Difference]: Finished difference Result 5914 states and 19807 transitions. [2021-06-12 22:45:42,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-12 22:45:42,905 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:42,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:42,914 INFO L225 Difference]: With dead ends: 5914 [2021-06-12 22:45:42,914 INFO L226 Difference]: Without dead ends: 5871 [2021-06-12 22:45:42,915 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 767.7ms TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:45:42,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5871 states. [2021-06-12 22:45:42,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5871 to 5494. [2021-06-12 22:45:42,975 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) [2021-06-12 22:45:42,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5494 states to 5494 states and 18595 transitions. [2021-06-12 22:45:42,984 INFO L78 Accepts]: Start accepts. Automaton has 5494 states and 18595 transitions. Word has length 39 [2021-06-12 22:45:42,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:42,985 INFO L482 AbstractCegarLoop]: Abstraction has 5494 states and 18595 transitions. [2021-06-12 22:45:42,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:42,985 INFO L276 IsEmpty]: Start isEmpty. Operand 5494 states and 18595 transitions. [2021-06-12 22:45:42,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:42,991 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:42,991 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:42,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable447 [2021-06-12 22:45:42,991 INFO L430 AbstractCegarLoop]: === Iteration 449 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:42,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:42,991 INFO L82 PathProgramCache]: Analyzing trace with hash -503574834, now seen corresponding path program 449 times [2021-06-12 22:45:42,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:42,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434962575] [2021-06-12 22:45:42,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:43,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:43,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:43,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434962575] [2021-06-12 22:45:43,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434962575] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:43,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:43,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:43,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869117741] [2021-06-12 22:45:43,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:43,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:43,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:43,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:43,169 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) [2021-06-12 22:45:44,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:44,272 INFO L93 Difference]: Finished difference Result 5851 states and 19652 transitions. [2021-06-12 22:45:44,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-12 22:45:44,272 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:44,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:44,281 INFO L225 Difference]: With dead ends: 5851 [2021-06-12 22:45:44,281 INFO L226 Difference]: Without dead ends: 5788 [2021-06-12 22:45:44,281 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 732.4ms TimeCoverageRelationStatistics Valid=240, Invalid=2310, Unknown=0, NotChecked=0, Total=2550 [2021-06-12 22:45:44,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2021-06-12 22:45:44,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 5476. [2021-06-12 22:45:44,356 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) [2021-06-12 22:45:44,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5476 states to 5476 states and 18552 transitions. [2021-06-12 22:45:44,365 INFO L78 Accepts]: Start accepts. Automaton has 5476 states and 18552 transitions. Word has length 39 [2021-06-12 22:45:44,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:44,365 INFO L482 AbstractCegarLoop]: Abstraction has 5476 states and 18552 transitions. [2021-06-12 22:45:44,365 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) [2021-06-12 22:45:44,365 INFO L276 IsEmpty]: Start isEmpty. Operand 5476 states and 18552 transitions. [2021-06-12 22:45:44,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:44,371 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:44,371 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:44,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable448 [2021-06-12 22:45:44,371 INFO L430 AbstractCegarLoop]: === Iteration 450 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:44,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:44,371 INFO L82 PathProgramCache]: Analyzing trace with hash 504878748, now seen corresponding path program 450 times [2021-06-12 22:45:44,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:44,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324468377] [2021-06-12 22:45:44,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:44,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:44,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:44,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324468377] [2021-06-12 22:45:44,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324468377] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:44,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:44,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:44,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636975039] [2021-06-12 22:45:44,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:44,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:44,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:44,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:44,564 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) [2021-06-12 22:45:45,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:45,756 INFO L93 Difference]: Finished difference Result 5955 states and 19895 transitions. [2021-06-12 22:45:45,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-12 22:45:45,756 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 [2021-06-12 22:45:45,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:45,765 INFO L225 Difference]: With dead ends: 5955 [2021-06-12 22:45:45,765 INFO L226 Difference]: Without dead ends: 5900 [2021-06-12 22:45:45,765 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 830.6ms TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2021-06-12 22:45:45,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5900 states. [2021-06-12 22:45:45,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5900 to 5478. [2021-06-12 22:45:45,823 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) [2021-06-12 22:45:45,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 18557 transitions. [2021-06-12 22:45:45,831 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 18557 transitions. Word has length 39 [2021-06-12 22:45:45,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:45,831 INFO L482 AbstractCegarLoop]: Abstraction has 5478 states and 18557 transitions. [2021-06-12 22:45:45,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 22:45:45,831 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 18557 transitions. [2021-06-12 22:45:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:45,837 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:45,837 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:45,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable449 [2021-06-12 22:45:45,837 INFO L430 AbstractCegarLoop]: === Iteration 451 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:45,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:45,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1841936762, now seen corresponding path program 451 times [2021-06-12 22:45:45,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:45,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333524732] [2021-06-12 22:45:45,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:46,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:46,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:46,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333524732] [2021-06-12 22:45:46,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333524732] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:46,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:46,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:46,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275898959] [2021-06-12 22:45:46,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:46,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:46,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:46,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:46,042 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) [2021-06-12 22:45:47,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 22:45:47,158 INFO L93 Difference]: Finished difference Result 5931 states and 19829 transitions. [2021-06-12 22:45:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-12 22:45:47,158 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-12 22:45:47,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 22:45:47,167 INFO L225 Difference]: With dead ends: 5931 [2021-06-12 22:45:47,167 INFO L226 Difference]: Without dead ends: 5888 [2021-06-12 22:45:47,167 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 782.3ms TimeCoverageRelationStatistics Valid=258, Invalid=2394, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 22:45:47,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5888 states. [2021-06-12 22:45:47,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5888 to 5484. [2021-06-12 22:45:47,227 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) [2021-06-12 22:45:47,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5484 states to 5484 states and 18570 transitions. [2021-06-12 22:45:47,236 INFO L78 Accepts]: Start accepts. Automaton has 5484 states and 18570 transitions. Word has length 39 [2021-06-12 22:45:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 22:45:47,236 INFO L482 AbstractCegarLoop]: Abstraction has 5484 states and 18570 transitions. [2021-06-12 22:45:47,236 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) [2021-06-12 22:45:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 5484 states and 18570 transitions. [2021-06-12 22:45:47,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-12 22:45:47,242 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 22:45:47,243 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 22:45:47,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable450 [2021-06-12 22:45:47,243 INFO L430 AbstractCegarLoop]: === Iteration 452 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 22:45:47,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 22:45:47,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1570517212, now seen corresponding path program 452 times [2021-06-12 22:45:47,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 22:45:47,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30549072] [2021-06-12 22:45:47,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 22:45:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 22:45:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 22:45:47,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 22:45:47,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30549072] [2021-06-12 22:45:47,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30549072] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 22:45:47,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 22:45:47,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-12 22:45:47,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959951780] [2021-06-12 22:45:47,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 22:45:47,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 22:45:47,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 22:45:47,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-12 22:45:47,414 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) Received shutdown request... [2021-06-12 22:45:47,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 22:45:47,672 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable451 [2021-06-12 22:45:47,672 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-12 22:45:47,674 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 22:45:47,675 WARN L196 ceAbstractionStarter]: Timeout [2021-06-12 22:45:47,675 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 10:45:47 BasicIcfg [2021-06-12 22:45:47,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 22:45:47,675 INFO L168 Benchmark]: Toolchain (without parser) took 751859.98 ms. Allocated memory was 219.2 MB in the beginning and 962.6 MB in the end (delta: 743.4 MB). Free memory was 199.0 MB in the beginning and 302.6 MB in the end (delta: -103.6 MB). Peak memory consumption was 641.5 MB. Max. memory is 8.0 GB. [2021-06-12 22:45:47,675 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 219.2 MB. Free memory is still 200.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 22:45:47,676 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.93 ms. Allocated memory is still 219.2 MB. Free memory was 198.9 MB in the beginning and 197.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-06-12 22:45:47,676 INFO L168 Benchmark]: Boogie Preprocessor took 9.43 ms. Allocated memory is still 219.2 MB. Free memory was 197.5 MB in the beginning and 196.6 MB in the end (delta: 873.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 22:45:47,676 INFO L168 Benchmark]: RCFGBuilder took 237.66 ms. Allocated memory is still 219.2 MB. Free memory was 196.5 MB in the beginning and 183.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-06-12 22:45:47,676 INFO L168 Benchmark]: TraceAbstraction took 751591.37 ms. Allocated memory was 219.2 MB in the beginning and 962.6 MB in the end (delta: 743.4 MB). Free memory was 183.2 MB in the beginning and 302.6 MB in the end (delta: -119.4 MB). Peak memory consumption was 624.7 MB. Max. memory is 8.0 GB. [2021-06-12 22:45:47,676 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 0.09 ms. Allocated memory is still 219.2 MB. Free memory is still 200.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 17.93 ms. Allocated memory is still 219.2 MB. Free memory was 198.9 MB in the beginning and 197.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 9.43 ms. Allocated memory is still 219.2 MB. Free memory was 197.5 MB in the beginning and 196.6 MB in the end (delta: 873.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 237.66 ms. Allocated memory is still 219.2 MB. Free memory was 196.5 MB in the beginning and 183.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 751591.37 ms. Allocated memory was 219.2 MB in the beginning and 962.6 MB in the end (delta: 743.4 MB). Free memory was 183.2 MB in the beginning and 302.6 MB in the end (delta: -119.4 MB). Peak memory consumption was 624.7 MB. Max. memory is 8.0 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 (5484states) and FLOYD_HOARE automaton (currently 10 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (99 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 9 procedures, 82 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 751454.8ms, OverallIterations: 452, TraceHistogramMax: 1, EmptinessCheckTime: 2446.2ms, AutomataDifference: 639363.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 294.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 69078 SDtfs, 133612 SDslu, 664742 SDs, 0 SdLazy, 743475 SolverSat, 25274 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 229181.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25829 GetRequests, 600 SyntacticMatches, 935 SemanticMatches, 24294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356266 ImplicationChecksByTransitivity, 401189.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5515occurred in iteration=410, InterpolantAutomatonStates: 21670, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 28802.6ms AutomataMinimizationTime, 451 MinimizatonAttempts, 385283 StatesRemovedByMinimization, 449 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 178.3ms SsaConstructionTime, 626.7ms SatisfiabilityAnalysisTime, 78457.0ms InterpolantComputationTime, 17628 NumberOfCodeBlocks, 17628 NumberOfCodeBlocksAsserted, 452 NumberOfCheckSat, 17176 ConstructedInterpolants, 0 QuantifiedInterpolants, 223465 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 452 InterpolantComputations, 452 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