/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 17:09:16,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 17:09:16,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 17:09:16,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 17:09:16,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 17:09:16,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 17:09:16,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 17:09:16,266 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-Separate.epf [2021-06-05 17:09:16,299 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 17:09:16,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 17:09:16,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 17:09:16,300 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 17:09:16,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 17:09:16,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 17:09:16,302 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 17:09:16,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 17:09:16,302 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 17:09:16,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 17:09:16,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 17:09:16,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 17:09:16,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 17:09:16,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 17:09:16,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 17:09:16,304 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 17:09:16,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 17:09:16,304 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 17:09:16,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 17:09:16,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 17:09:16,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 17:09:16,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 17:09:16,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 17:09:16,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 17:09:16,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 17:09:16,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 17:09:16,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 17:09:16,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 17:09:16,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 17:09:16,306 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 17:09:16,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 17:09:16,306 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 17:09:16,306 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 17:09:16,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 17:09:16,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 17:09:16,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 17:09:16,649 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 17:09:16,650 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 17:09:16,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl [2021-06-05 17:09:16,651 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl' [2021-06-05 17:09:16,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 17:09:16,689 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 17:09:16,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 17:09:16,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 17:09:16,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 17:09:16,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:09:16" (1/1) ... [2021-06-05 17:09:16,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:09:16" (1/1) ... [2021-06-05 17:09:16,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 17:09:16,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 17:09:16,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 17:09:16,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 17:09:16,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:09:16" (1/1) ... [2021-06-05 17:09:16,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:09:16" (1/1) ... [2021-06-05 17:09:16,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:09:16" (1/1) ... [2021-06-05 17:09:16,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:09:16" (1/1) ... [2021-06-05 17:09:16,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:09:16" (1/1) ... [2021-06-05 17:09:16,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:09:16" (1/1) ... [2021-06-05 17:09:16,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:09:16" (1/1) ... [2021-06-05 17:09:16,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 17:09:16,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 17:09:16,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 17:09:16,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 17:09:16,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:09:16" (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 [2021-06-05 17:09:16,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 17:09:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 17:09:16,800 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 17:09:16,801 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 17:09:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 17:09:16,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 17:09:16,801 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 17:09:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 17:09:16,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 17:09:16,802 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 17:09:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 17:09:16,802 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 17:09:16,802 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-05 17:09:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-05 17:09:16,803 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-05 17:09:16,803 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 17:09:16,977 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 17:09:16,977 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 17:09:16,978 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 05:09:16 BoogieIcfgContainer [2021-06-05 17:09:16,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 17:09:16,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 17:09:16,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 17:09:16,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 17:09:16,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 05:09:16" (1/2) ... [2021-06-05 17:09:16,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb8fb6a and model type easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 05:09:16, skipping insertion in model container [2021-06-05 17:09:16,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 05:09:16" (2/2) ... [2021-06-05 17:09:16,984 INFO L111 eAbstractionObserver]: Analyzing ICFG easy10.wvr.bpl [2021-06-05 17:09:16,989 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 17:09:16,989 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 17:09:16,989 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 17:09:16,990 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 17:09:17,044 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-05 17:09:17,075 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-05 17:09:17,102 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 17:09:17,102 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 17:09:17,102 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 17:09:17,102 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 17:09:17,103 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 17:09:17,103 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 17:09:17,103 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 17:09:17,103 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 17:09:17,128 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 45 transitions, 122 flow [2021-06-05 17:09:17,495 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) [2021-06-05 17:09:17,514 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) [2021-06-05 17:09:17,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:17,558 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:17,559 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:17,559 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:17,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:17,567 INFO L82 PathProgramCache]: Analyzing trace with hash -127225446, now seen corresponding path program 1 times [2021-06-05 17:09:17,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:17,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473017571] [2021-06-05 17:09:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:17,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:17,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:17,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473017571] [2021-06-05 17:09:17,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473017571] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:17,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:17,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 17:09:17,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499661495] [2021-06-05 17:09:17,739 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 17:09:17,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:17,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 17:09:17,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 17:09:17,785 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) [2021-06-05 17:09:17,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:17,876 INFO L93 Difference]: Finished difference Result 4197 states and 14419 transitions. [2021-06-05 17:09:17,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 17:09:17,878 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 [2021-06-05 17:09:17,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:17,930 INFO L225 Difference]: With dead ends: 4197 [2021-06-05 17:09:17,930 INFO L226 Difference]: Without dead ends: 4197 [2021-06-05 17:09:17,932 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 17:09:17,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4197 states. [2021-06-05 17:09:18,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4197 to 4197. [2021-06-05 17:09:18,181 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) [2021-06-05 17:09:18,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 14419 transitions. [2021-06-05 17:09:18,208 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 14419 transitions. Word has length 39 [2021-06-05 17:09:18,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:18,209 INFO L482 AbstractCegarLoop]: Abstraction has 4197 states and 14419 transitions. [2021-06-05 17:09:18,209 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) [2021-06-05 17:09:18,210 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 14419 transitions. [2021-06-05 17:09:18,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:18,225 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:18,225 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:18,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 17:09:18,227 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:18,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:18,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1294182084, now seen corresponding path program 2 times [2021-06-05 17:09:18,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:18,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137604830] [2021-06-05 17:09:18,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:18,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:18,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:18,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137604830] [2021-06-05 17:09:18,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137604830] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:18,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:18,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 17:09:18,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549507853] [2021-06-05 17:09:18,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 17:09:18,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:18,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 17:09:18,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 17:09:18,276 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) [2021-06-05 17:09:18,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:18,309 INFO L93 Difference]: Finished difference Result 3290 states and 11077 transitions. [2021-06-05 17:09:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 17:09:18,310 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 [2021-06-05 17:09:18,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:18,328 INFO L225 Difference]: With dead ends: 3290 [2021-06-05 17:09:18,329 INFO L226 Difference]: Without dead ends: 3290 [2021-06-05 17:09:18,329 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 17:09:18,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2021-06-05 17:09:18,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 3290. [2021-06-05 17:09:18,481 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) [2021-06-05 17:09:18,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 11077 transitions. [2021-06-05 17:09:18,495 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 11077 transitions. Word has length 39 [2021-06-05 17:09:18,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:18,496 INFO L482 AbstractCegarLoop]: Abstraction has 3290 states and 11077 transitions. [2021-06-05 17:09:18,496 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) [2021-06-05 17:09:18,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 11077 transitions. [2021-06-05 17:09:18,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:18,508 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:18,508 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:18,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 17:09:18,509 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:18,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:18,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1879996152, now seen corresponding path program 3 times [2021-06-05 17:09:18,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:18,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059030105] [2021-06-05 17:09:18,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:19,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:19,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:19,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059030105] [2021-06-05 17:09:19,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059030105] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:19,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:19,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:19,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833806737] [2021-06-05 17:09:19,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:19,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:19,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:19,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:19,059 INFO L87 Difference]: Start difference. First operand 3290 states and 11077 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:20,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:20,638 INFO L93 Difference]: Finished difference Result 3861 states and 12851 transitions. [2021-06-05 17:09:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 17:09:20,640 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:20,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:20,662 INFO L225 Difference]: With dead ends: 3861 [2021-06-05 17:09:20,663 INFO L226 Difference]: Without dead ends: 3794 [2021-06-05 17:09:20,663 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 974.4ms TimeCoverageRelationStatistics Valid=179, Invalid=1543, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 17:09:20,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2021-06-05 17:09:20,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 3406. [2021-06-05 17:09:20,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3405 states have (on average 3.3612334801762116) internal successors, (11445), 3405 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:20,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 11445 transitions. [2021-06-05 17:09:20,811 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 11445 transitions. Word has length 39 [2021-06-05 17:09:20,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:20,812 INFO L482 AbstractCegarLoop]: Abstraction has 3406 states and 11445 transitions. [2021-06-05 17:09:20,812 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) [2021-06-05 17:09:20,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 11445 transitions. [2021-06-05 17:09:20,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:20,821 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:20,821 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:20,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 17:09:20,822 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:20,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:20,823 INFO L82 PathProgramCache]: Analyzing trace with hash 160380182, now seen corresponding path program 4 times [2021-06-05 17:09:20,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:20,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274838819] [2021-06-05 17:09:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:21,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:21,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274838819] [2021-06-05 17:09:21,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274838819] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:21,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:21,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:21,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381947832] [2021-06-05 17:09:21,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:21,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:21,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:21,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:21,162 INFO L87 Difference]: Start difference. First operand 3406 states and 11445 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:22,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:22,914 INFO L93 Difference]: Finished difference Result 3950 states and 13052 transitions. [2021-06-05 17:09:22,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 17:09:22,915 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:22,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:22,935 INFO L225 Difference]: With dead ends: 3950 [2021-06-05 17:09:22,936 INFO L226 Difference]: Without dead ends: 3907 [2021-06-05 17:09:22,936 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 1103.9ms TimeCoverageRelationStatistics Valid=249, Invalid=2301, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:09:22,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3907 states. [2021-06-05 17:09:23,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 3412. [2021-06-05 17:09:23,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3411 states have (on average 3.359132219290531) internal successors, (11458), 3411 states have internal predecessors, (11458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 11458 transitions. [2021-06-05 17:09:23,047 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 11458 transitions. Word has length 39 [2021-06-05 17:09:23,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:23,047 INFO L482 AbstractCegarLoop]: Abstraction has 3412 states and 11458 transitions. [2021-06-05 17:09:23,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:23,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 11458 transitions. [2021-06-05 17:09:23,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:23,056 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:23,057 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:23,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 17:09:23,057 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:23,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:23,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1620218120, now seen corresponding path program 5 times [2021-06-05 17:09:23,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:23,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023447859] [2021-06-05 17:09:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:23,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:23,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023447859] [2021-06-05 17:09:23,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023447859] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:23,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:23,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:23,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333734003] [2021-06-05 17:09:23,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:23,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:23,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:23,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:23,423 INFO L87 Difference]: Start difference. First operand 3412 states and 11458 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:25,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:25,095 INFO L93 Difference]: Finished difference Result 3905 states and 12948 transitions. [2021-06-05 17:09:25,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 17:09:25,095 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:25,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:25,119 INFO L225 Difference]: With dead ends: 3905 [2021-06-05 17:09:25,120 INFO L226 Difference]: Without dead ends: 3841 [2021-06-05 17:09:25,121 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1144.5ms TimeCoverageRelationStatistics Valid=240, Invalid=2210, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 17:09:25,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2021-06-05 17:09:25,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 3394. [2021-06-05 17:09:25,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.3642793987621573) internal successors, (11415), 3393 states have internal predecessors, (11415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:25,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11415 transitions. [2021-06-05 17:09:25,239 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11415 transitions. Word has length 39 [2021-06-05 17:09:25,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:25,240 INFO L482 AbstractCegarLoop]: Abstraction has 3394 states and 11415 transitions. [2021-06-05 17:09:25,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:25,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11415 transitions. [2021-06-05 17:09:25,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:25,249 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:25,249 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:25,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 17:09:25,249 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:25,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:25,250 INFO L82 PathProgramCache]: Analyzing trace with hash -999783720, now seen corresponding path program 6 times [2021-06-05 17:09:25,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:25,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809636822] [2021-06-05 17:09:25,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:25,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:25,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809636822] [2021-06-05 17:09:25,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809636822] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:25,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:25,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:25,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304605203] [2021-06-05 17:09:25,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:25,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:25,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:25,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:25,559 INFO L87 Difference]: Start difference. First operand 3394 states and 11415 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:26,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:26,738 INFO L93 Difference]: Finished difference Result 3861 states and 12845 transitions. [2021-06-05 17:09:26,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 17:09:26,739 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 [2021-06-05 17:09:26,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:26,750 INFO L225 Difference]: With dead ends: 3861 [2021-06-05 17:09:26,750 INFO L226 Difference]: Without dead ends: 3794 [2021-06-05 17:09:26,751 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 683.0ms TimeCoverageRelationStatistics Valid=169, Invalid=1471, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 17:09:26,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2021-06-05 17:09:26,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 3402. [2021-06-05 17:09:26,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3401 states have (on average 3.3610702734489855) internal successors, (11431), 3401 states have internal predecessors, (11431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:26,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 11431 transitions. [2021-06-05 17:09:26,845 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 11431 transitions. Word has length 39 [2021-06-05 17:09:26,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:26,845 INFO L482 AbstractCegarLoop]: Abstraction has 3402 states and 11431 transitions. [2021-06-05 17:09:26,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:26,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 11431 transitions. [2021-06-05 17:09:26,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:26,857 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:26,857 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:26,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 17:09:26,857 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:26,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:26,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1130378568, now seen corresponding path program 7 times [2021-06-05 17:09:26,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:26,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324395787] [2021-06-05 17:09:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:27,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:27,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324395787] [2021-06-05 17:09:27,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324395787] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:27,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:27,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:27,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243406248] [2021-06-05 17:09:27,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:27,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:27,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:27,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:27,090 INFO L87 Difference]: Start difference. First operand 3402 states and 11431 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:28,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:28,179 INFO L93 Difference]: Finished difference Result 3849 states and 12805 transitions. [2021-06-05 17:09:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 17:09:28,179 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:28,199 INFO L225 Difference]: With dead ends: 3849 [2021-06-05 17:09:28,199 INFO L226 Difference]: Without dead ends: 3786 [2021-06-05 17:09:28,201 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 669.9ms TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 17:09:28,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-06-05 17:09:28,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3394. [2021-06-05 17:09:28,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3393 states have (on average 3.3631005010315356) internal successors, (11411), 3393 states have internal predecessors, (11411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:28,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 11411 transitions. [2021-06-05 17:09:28,297 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 11411 transitions. Word has length 39 [2021-06-05 17:09:28,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:28,298 INFO L482 AbstractCegarLoop]: Abstraction has 3394 states and 11411 transitions. [2021-06-05 17:09:28,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:28,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 11411 transitions. [2021-06-05 17:09:28,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:28,306 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:28,306 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:28,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 17:09:28,306 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:28,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:28,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1266057160, now seen corresponding path program 8 times [2021-06-05 17:09:28,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:28,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572424939] [2021-06-05 17:09:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:28,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:28,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:28,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572424939] [2021-06-05 17:09:28,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572424939] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:28,597 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:28,597 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:28,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275270891] [2021-06-05 17:09:28,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:28,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:28,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:28,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:28,598 INFO L87 Difference]: Start difference. First operand 3394 states and 11411 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:30,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:30,051 INFO L93 Difference]: Finished difference Result 4016 states and 13206 transitions. [2021-06-05 17:09:30,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 17:09:30,052 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:30,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:30,062 INFO L225 Difference]: With dead ends: 4016 [2021-06-05 17:09:30,062 INFO L226 Difference]: Without dead ends: 3973 [2021-06-05 17:09:30,063 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 985.7ms TimeCoverageRelationStatistics Valid=268, Invalid=2488, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 17:09:30,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3973 states. [2021-06-05 17:09:30,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3973 to 3402. [2021-06-05 17:09:30,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3401 states have (on average 3.3610702734489855) internal successors, (11431), 3401 states have internal predecessors, (11431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:30,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 11431 transitions. [2021-06-05 17:09:30,156 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 11431 transitions. Word has length 39 [2021-06-05 17:09:30,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:30,156 INFO L482 AbstractCegarLoop]: Abstraction has 3402 states and 11431 transitions. [2021-06-05 17:09:30,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:30,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 11431 transitions. [2021-06-05 17:09:30,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:30,163 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:30,163 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:30,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 17:09:30,163 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:30,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:30,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1248311834, now seen corresponding path program 9 times [2021-06-05 17:09:30,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:30,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146589951] [2021-06-05 17:09:30,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:30,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:30,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146589951] [2021-06-05 17:09:30,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146589951] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:30,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:30,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:30,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957169127] [2021-06-05 17:09:30,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:30,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:30,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:30,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:30,409 INFO L87 Difference]: Start difference. First operand 3402 states and 11431 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:31,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:31,817 INFO L93 Difference]: Finished difference Result 4004 states and 13168 transitions. [2021-06-05 17:09:31,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 17:09:31,817 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:31,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:31,825 INFO L225 Difference]: With dead ends: 4004 [2021-06-05 17:09:31,826 INFO L226 Difference]: Without dead ends: 3952 [2021-06-05 17:09:31,827 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 935.4ms TimeCoverageRelationStatistics Valid=260, Invalid=2392, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 17:09:31,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2021-06-05 17:09:31,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3396. [2021-06-05 17:09:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 3.3625920471281296) internal successors, (11416), 3395 states have internal predecessors, (11416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:31,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 11416 transitions. [2021-06-05 17:09:31,916 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 11416 transitions. Word has length 39 [2021-06-05 17:09:31,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:31,916 INFO L482 AbstractCegarLoop]: Abstraction has 3396 states and 11416 transitions. [2021-06-05 17:09:31,916 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) [2021-06-05 17:09:31,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 11416 transitions. [2021-06-05 17:09:31,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:31,924 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:31,924 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:31,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 17:09:31,924 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:31,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:31,925 INFO L82 PathProgramCache]: Analyzing trace with hash -347573590, now seen corresponding path program 10 times [2021-06-05 17:09:31,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:31,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333189570] [2021-06-05 17:09:31,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:32,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:32,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:32,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333189570] [2021-06-05 17:09:32,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333189570] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:32,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:32,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:32,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952094609] [2021-06-05 17:09:32,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:32,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:32,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:32,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:32,142 INFO L87 Difference]: Start difference. First operand 3396 states and 11416 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:33,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:33,262 INFO L93 Difference]: Finished difference Result 3977 states and 13079 transitions. [2021-06-05 17:09:33,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 17:09:33,263 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:33,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:33,269 INFO L225 Difference]: With dead ends: 3977 [2021-06-05 17:09:33,269 INFO L226 Difference]: Without dead ends: 3922 [2021-06-05 17:09:33,269 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 705.1ms TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 17:09:33,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2021-06-05 17:09:33,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3396. [2021-06-05 17:09:33,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3396 states, 3395 states have (on average 3.3620029455081) internal successors, (11414), 3395 states have internal predecessors, (11414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:33,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 11414 transitions. [2021-06-05 17:09:33,349 INFO L78 Accepts]: Start accepts. Automaton has 3396 states and 11414 transitions. Word has length 39 [2021-06-05 17:09:33,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:33,349 INFO L482 AbstractCegarLoop]: Abstraction has 3396 states and 11414 transitions. [2021-06-05 17:09:33,349 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:33,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3396 states and 11414 transitions. [2021-06-05 17:09:33,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:33,356 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:33,356 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:33,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 17:09:33,356 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:33,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:33,357 INFO L82 PathProgramCache]: Analyzing trace with hash 825078632, now seen corresponding path program 11 times [2021-06-05 17:09:33,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:33,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684854294] [2021-06-05 17:09:33,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:33,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:33,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684854294] [2021-06-05 17:09:33,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684854294] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:33,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:33,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:33,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696447225] [2021-06-05 17:09:33,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:33,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:33,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:33,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:33,563 INFO L87 Difference]: Start difference. First operand 3396 states and 11414 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:34,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:34,689 INFO L93 Difference]: Finished difference Result 3912 states and 12927 transitions. [2021-06-05 17:09:34,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 17:09:34,689 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:34,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:34,695 INFO L225 Difference]: With dead ends: 3912 [2021-06-05 17:09:34,695 INFO L226 Difference]: Without dead ends: 3866 [2021-06-05 17:09:34,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 702.8ms TimeCoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 17:09:34,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2021-06-05 17:09:34,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3400. [2021-06-05 17:09:34,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3400 states, 3399 states have (on average 3.360400117681671) internal successors, (11422), 3399 states have internal predecessors, (11422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:34,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 11422 transitions. [2021-06-05 17:09:34,775 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 11422 transitions. Word has length 39 [2021-06-05 17:09:34,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:34,775 INFO L482 AbstractCegarLoop]: Abstraction has 3400 states and 11422 transitions. [2021-06-05 17:09:34,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:34,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 11422 transitions. [2021-06-05 17:09:34,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:34,783 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:34,783 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:34,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 17:09:34,784 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:34,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:34,784 INFO L82 PathProgramCache]: Analyzing trace with hash 577612470, now seen corresponding path program 12 times [2021-06-05 17:09:34,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:34,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569440320] [2021-06-05 17:09:34,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:35,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:35,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569440320] [2021-06-05 17:09:35,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569440320] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:35,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:35,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:35,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226948142] [2021-06-05 17:09:35,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:35,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:35,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:35,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:35,050 INFO L87 Difference]: Start difference. First operand 3400 states and 11422 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:36,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:36,374 INFO L93 Difference]: Finished difference Result 3963 states and 13072 transitions. [2021-06-05 17:09:36,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:09:36,374 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:36,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:36,381 INFO L225 Difference]: With dead ends: 3963 [2021-06-05 17:09:36,381 INFO L226 Difference]: Without dead ends: 3899 [2021-06-05 17:09:36,382 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 918.1ms TimeCoverageRelationStatistics Valid=242, Invalid=2208, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 17:09:36,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3899 states. [2021-06-05 17:09:36,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3899 to 3450. [2021-06-05 17:09:36,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3450 states, 3449 states have (on average 3.358944621629458) internal successors, (11585), 3449 states have internal predecessors, (11585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:36,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 11585 transitions. [2021-06-05 17:09:36,457 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 11585 transitions. Word has length 39 [2021-06-05 17:09:36,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:36,458 INFO L482 AbstractCegarLoop]: Abstraction has 3450 states and 11585 transitions. [2021-06-05 17:09:36,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:36,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 11585 transitions. [2021-06-05 17:09:36,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:36,465 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:36,465 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:36,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 17:09:36,465 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:36,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:36,466 INFO L82 PathProgramCache]: Analyzing trace with hash 2116487992, now seen corresponding path program 13 times [2021-06-05 17:09:36,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:36,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335484848] [2021-06-05 17:09:36,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:36,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:36,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335484848] [2021-06-05 17:09:36,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335484848] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:36,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:36,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:36,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734154198] [2021-06-05 17:09:36,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:36,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:36,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:36,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:36,700 INFO L87 Difference]: Start difference. First operand 3450 states and 11585 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:37,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:37,727 INFO L93 Difference]: Finished difference Result 3857 states and 12851 transitions. [2021-06-05 17:09:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 17:09:37,728 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:37,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:37,735 INFO L225 Difference]: With dead ends: 3857 [2021-06-05 17:09:37,735 INFO L226 Difference]: Without dead ends: 3790 [2021-06-05 17:09:37,735 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 558.4ms TimeCoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 17:09:37,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2021-06-05 17:09:37,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3490. [2021-06-05 17:09:37,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 3489 states have (on average 3.351390083118372) internal successors, (11693), 3489 states have internal predecessors, (11693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:37,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 11693 transitions. [2021-06-05 17:09:37,810 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 11693 transitions. Word has length 39 [2021-06-05 17:09:37,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:37,810 INFO L482 AbstractCegarLoop]: Abstraction has 3490 states and 11693 transitions. [2021-06-05 17:09:37,810 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:37,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 11693 transitions. [2021-06-05 17:09:37,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:37,817 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:37,817 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:37,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 17:09:37,818 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:37,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:37,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1985893144, now seen corresponding path program 14 times [2021-06-05 17:09:37,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:37,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297048850] [2021-06-05 17:09:37,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:38,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:38,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297048850] [2021-06-05 17:09:38,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297048850] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:38,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:38,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:38,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484690288] [2021-06-05 17:09:38,021 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:38,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:38,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:38,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:38,023 INFO L87 Difference]: Start difference. First operand 3490 states and 11693 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:38,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:38,995 INFO L93 Difference]: Finished difference Result 3845 states and 12811 transitions. [2021-06-05 17:09:38,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 17:09:38,995 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 [2021-06-05 17:09:38,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:39,002 INFO L225 Difference]: With dead ends: 3845 [2021-06-05 17:09:39,002 INFO L226 Difference]: Without dead ends: 3782 [2021-06-05 17:09:39,002 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 560.3ms TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 17:09:39,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2021-06-05 17:09:39,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 3482. [2021-06-05 17:09:39,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 3481 states have (on average 3.3521976443550705) internal successors, (11669), 3481 states have internal predecessors, (11669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:39,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 11669 transitions. [2021-06-05 17:09:39,065 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 11669 transitions. Word has length 39 [2021-06-05 17:09:39,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:39,065 INFO L482 AbstractCegarLoop]: Abstraction has 3482 states and 11669 transitions. [2021-06-05 17:09:39,066 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:39,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 11669 transitions. [2021-06-05 17:09:39,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:39,073 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:39,073 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:39,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 17:09:39,074 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:39,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:39,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1455992696, now seen corresponding path program 15 times [2021-06-05 17:09:39,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:39,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238898530] [2021-06-05 17:09:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:39,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:39,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238898530] [2021-06-05 17:09:39,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238898530] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:39,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:39,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:39,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90847957] [2021-06-05 17:09:39,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:39,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:39,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:39,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:39,291 INFO L87 Difference]: Start difference. First operand 3482 states and 11669 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:40,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:40,311 INFO L93 Difference]: Finished difference Result 3869 states and 12871 transitions. [2021-06-05 17:09:40,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 17:09:40,311 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:40,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:40,317 INFO L225 Difference]: With dead ends: 3869 [2021-06-05 17:09:40,317 INFO L226 Difference]: Without dead ends: 3746 [2021-06-05 17:09:40,318 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 600.7ms TimeCoverageRelationStatistics Valid=159, Invalid=1401, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 17:09:40,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2021-06-05 17:09:40,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 3450. [2021-06-05 17:09:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3450 states, 3449 states have (on average 3.3543055958248766) internal successors, (11569), 3449 states have internal predecessors, (11569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:40,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 11569 transitions. [2021-06-05 17:09:40,386 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 11569 transitions. Word has length 39 [2021-06-05 17:09:40,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:40,386 INFO L482 AbstractCegarLoop]: Abstraction has 3450 states and 11569 transitions. [2021-06-05 17:09:40,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:40,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 11569 transitions. [2021-06-05 17:09:40,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:40,393 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:40,393 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:40,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 17:09:40,393 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:40,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:40,393 INFO L82 PathProgramCache]: Analyzing trace with hash 737581526, now seen corresponding path program 16 times [2021-06-05 17:09:40,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:40,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499526726] [2021-06-05 17:09:40,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:40,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:40,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:40,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499526726] [2021-06-05 17:09:40,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499526726] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:40,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:40,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:40,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637208057] [2021-06-05 17:09:40,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:40,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:40,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:40,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:40,632 INFO L87 Difference]: Start difference. First operand 3450 states and 11569 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:42,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:42,423 INFO L93 Difference]: Finished difference Result 5674 states and 19244 transitions. [2021-06-05 17:09:42,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 17:09:42,423 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:42,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:42,433 INFO L225 Difference]: With dead ends: 5674 [2021-06-05 17:09:42,433 INFO L226 Difference]: Without dead ends: 5631 [2021-06-05 17:09:42,434 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 1026.3ms TimeCoverageRelationStatistics Valid=309, Invalid=3113, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 17:09:42,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2021-06-05 17:09:42,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 3544. [2021-06-05 17:09:42,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3544 states, 3543 states have (on average 3.3519616144510302) internal successors, (11876), 3543 states have internal predecessors, (11876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 11876 transitions. [2021-06-05 17:09:42,514 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 11876 transitions. Word has length 39 [2021-06-05 17:09:42,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:42,514 INFO L482 AbstractCegarLoop]: Abstraction has 3544 states and 11876 transitions. [2021-06-05 17:09:42,514 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:42,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 11876 transitions. [2021-06-05 17:09:42,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:42,524 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:42,524 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:42,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 17:09:42,524 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:42,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:42,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1043016776, now seen corresponding path program 17 times [2021-06-05 17:09:42,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:42,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155006556] [2021-06-05 17:09:42,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:42,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:42,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155006556] [2021-06-05 17:09:42,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155006556] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:42,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:42,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:42,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034493202] [2021-06-05 17:09:42,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:42,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:42,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:42,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:42,744 INFO L87 Difference]: Start difference. First operand 3544 states and 11876 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:44,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:44,841 INFO L93 Difference]: Finished difference Result 6535 states and 22174 transitions. [2021-06-05 17:09:44,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 17:09:44,842 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:44,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:44,856 INFO L225 Difference]: With dead ends: 6535 [2021-06-05 17:09:44,856 INFO L226 Difference]: Without dead ends: 6483 [2021-06-05 17:09:44,858 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 1191.8ms TimeCoverageRelationStatistics Valid=351, Invalid=3809, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 17:09:44,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6483 states. [2021-06-05 17:09:44,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6483 to 3538. [2021-06-05 17:09:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3537 states have (on average 3.35340684195646) internal successors, (11861), 3537 states have internal predecessors, (11861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:44,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 11861 transitions. [2021-06-05 17:09:44,942 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 11861 transitions. Word has length 39 [2021-06-05 17:09:44,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:44,942 INFO L482 AbstractCegarLoop]: Abstraction has 3538 states and 11861 transitions. [2021-06-05 17:09:44,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:44,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 11861 transitions. [2021-06-05 17:09:44,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:44,949 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:44,949 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:44,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 17:09:44,949 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:44,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1656065096, now seen corresponding path program 18 times [2021-06-05 17:09:44,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:44,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327221916] [2021-06-05 17:09:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:45,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:45,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327221916] [2021-06-05 17:09:45,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327221916] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:45,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:45,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:45,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066576778] [2021-06-05 17:09:45,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:45,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:45,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:45,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:45,145 INFO L87 Difference]: Start difference. First operand 3538 states and 11861 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:46,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:46,700 INFO L93 Difference]: Finished difference Result 5563 states and 18698 transitions. [2021-06-05 17:09:46,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 17:09:46,707 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:46,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:46,716 INFO L225 Difference]: With dead ends: 5563 [2021-06-05 17:09:46,716 INFO L226 Difference]: Without dead ends: 5508 [2021-06-05 17:09:46,717 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 806.2ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:09:46,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-06-05 17:09:46,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 3622. [2021-06-05 17:09:46,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3621 states have (on average 3.352388842861088) internal successors, (12139), 3621 states have internal predecessors, (12139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 12139 transitions. [2021-06-05 17:09:46,784 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 12139 transitions. Word has length 39 [2021-06-05 17:09:46,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:46,784 INFO L482 AbstractCegarLoop]: Abstraction has 3622 states and 12139 transitions. [2021-06-05 17:09:46,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:46,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 12139 transitions. [2021-06-05 17:09:46,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:46,788 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:46,788 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:46,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 17:09:46,789 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:46,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:46,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1466249978, now seen corresponding path program 19 times [2021-06-05 17:09:46,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:46,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136974518] [2021-06-05 17:09:46,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:47,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:47,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136974518] [2021-06-05 17:09:47,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136974518] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:47,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:47,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:47,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289467414] [2021-06-05 17:09:47,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:47,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:47,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:47,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:47,045 INFO L87 Difference]: Start difference. First operand 3622 states and 12139 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:48,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:48,829 INFO L93 Difference]: Finished difference Result 6424 states and 21632 transitions. [2021-06-05 17:09:48,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 17:09:48,830 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:48,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:48,841 INFO L225 Difference]: With dead ends: 6424 [2021-06-05 17:09:48,841 INFO L226 Difference]: Without dead ends: 6364 [2021-06-05 17:09:48,842 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 971.9ms TimeCoverageRelationStatistics Valid=275, Invalid=2805, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:09:48,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2021-06-05 17:09:48,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 3620. [2021-06-05 17:09:48,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3619 states have (on average 3.3528599060513953) internal successors, (12134), 3619 states have internal predecessors, (12134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:48,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 12134 transitions. [2021-06-05 17:09:48,923 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 12134 transitions. Word has length 39 [2021-06-05 17:09:48,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:48,923 INFO L482 AbstractCegarLoop]: Abstraction has 3620 states and 12134 transitions. [2021-06-05 17:09:48,923 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:48,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 12134 transitions. [2021-06-05 17:09:48,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:48,929 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:48,929 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:48,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 17:09:48,930 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:48,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:48,930 INFO L82 PathProgramCache]: Analyzing trace with hash 951313716, now seen corresponding path program 20 times [2021-06-05 17:09:48,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:48,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732588331] [2021-06-05 17:09:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:49,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:49,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:49,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732588331] [2021-06-05 17:09:49,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732588331] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:49,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:49,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:49,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086896369] [2021-06-05 17:09:49,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:49,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:49,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:49,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:49,127 INFO L87 Difference]: Start difference. First operand 3620 states and 12134 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:50,427 INFO L93 Difference]: Finished difference Result 5484 states and 18506 transitions. [2021-06-05 17:09:50,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 17:09:50,427 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:50,439 INFO L225 Difference]: With dead ends: 5484 [2021-06-05 17:09:50,439 INFO L226 Difference]: Without dead ends: 5393 [2021-06-05 17:09:50,440 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 674.7ms TimeCoverageRelationStatistics Valid=210, Invalid=1952, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:09:50,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2021-06-05 17:09:50,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 3620. [2021-06-05 17:09:50,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3619 states have (on average 3.3512019894998617) internal successors, (12128), 3619 states have internal predecessors, (12128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 12128 transitions. [2021-06-05 17:09:50,505 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 12128 transitions. Word has length 39 [2021-06-05 17:09:50,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:50,505 INFO L482 AbstractCegarLoop]: Abstraction has 3620 states and 12128 transitions. [2021-06-05 17:09:50,505 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:50,505 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 12128 transitions. [2021-06-05 17:09:50,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:50,511 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:50,511 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:50,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 17:09:50,511 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:50,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:50,512 INFO L82 PathProgramCache]: Analyzing trace with hash -551168490, now seen corresponding path program 21 times [2021-06-05 17:09:50,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:50,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695392021] [2021-06-05 17:09:50,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:50,723 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:50,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695392021] [2021-06-05 17:09:50,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695392021] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:50,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:50,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:50,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54615915] [2021-06-05 17:09:50,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:50,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:50,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:50,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:50,725 INFO L87 Difference]: Start difference. First operand 3620 states and 12128 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:52,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:52,327 INFO L93 Difference]: Finished difference Result 6297 states and 21308 transitions. [2021-06-05 17:09:52,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 17:09:52,327 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:52,338 INFO L225 Difference]: With dead ends: 6297 [2021-06-05 17:09:52,338 INFO L226 Difference]: Without dead ends: 6181 [2021-06-05 17:09:52,338 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 820.9ms TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:09:52,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2021-06-05 17:09:52,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 3598. [2021-06-05 17:09:52,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3597 states have (on average 3.3525159855435085) internal successors, (12059), 3597 states have internal predecessors, (12059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:52,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12059 transitions. [2021-06-05 17:09:52,409 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12059 transitions. Word has length 39 [2021-06-05 17:09:52,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:52,410 INFO L482 AbstractCegarLoop]: Abstraction has 3598 states and 12059 transitions. [2021-06-05 17:09:52,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:52,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12059 transitions. [2021-06-05 17:09:52,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:52,416 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:52,416 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:52,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 17:09:52,416 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:52,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:52,416 INFO L82 PathProgramCache]: Analyzing trace with hash -17245494, now seen corresponding path program 22 times [2021-06-05 17:09:52,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:52,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420392247] [2021-06-05 17:09:52,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:52,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:52,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420392247] [2021-06-05 17:09:52,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420392247] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:52,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:52,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 17:09:52,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051456320] [2021-06-05 17:09:52,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:09:52,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:52,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:09:52,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:09:52,619 INFO L87 Difference]: Start difference. First operand 3598 states and 12059 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:53,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:53,484 INFO L93 Difference]: Finished difference Result 3859 states and 12840 transitions. [2021-06-05 17:09:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 17:09:53,485 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 [2021-06-05 17:09:53,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:53,491 INFO L225 Difference]: With dead ends: 3859 [2021-06-05 17:09:53,491 INFO L226 Difference]: Without dead ends: 3792 [2021-06-05 17:09:53,491 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 584.8ms TimeCoverageRelationStatistics Valid=157, Invalid=1325, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 17:09:53,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3792 states. [2021-06-05 17:09:53,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3792 to 3610. [2021-06-05 17:09:53,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3609 states have (on average 3.3485730119146577) internal successors, (12085), 3609 states have internal predecessors, (12085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:53,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12085 transitions. [2021-06-05 17:09:53,543 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12085 transitions. Word has length 39 [2021-06-05 17:09:53,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:53,543 INFO L482 AbstractCegarLoop]: Abstraction has 3610 states and 12085 transitions. [2021-06-05 17:09:53,543 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) [2021-06-05 17:09:53,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12085 transitions. [2021-06-05 17:09:53,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:53,547 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:53,547 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:53,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 17:09:53,547 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:53,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:53,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1736861464, now seen corresponding path program 23 times [2021-06-05 17:09:53,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:53,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234866135] [2021-06-05 17:09:53,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:53,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:53,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234866135] [2021-06-05 17:09:53,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234866135] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:53,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:53,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 17:09:53,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253677789] [2021-06-05 17:09:53,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:09:53,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:53,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:09:53,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:09:53,728 INFO L87 Difference]: Start difference. First operand 3610 states and 12085 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:54,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:54,881 INFO L93 Difference]: Finished difference Result 3857 states and 12839 transitions. [2021-06-05 17:09:54,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 17:09:54,881 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 [2021-06-05 17:09:54,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:54,887 INFO L225 Difference]: With dead ends: 3857 [2021-06-05 17:09:54,888 INFO L226 Difference]: Without dead ends: 3796 [2021-06-05 17:09:54,888 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 762.9ms TimeCoverageRelationStatistics Valid=209, Invalid=1771, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 17:09:54,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3796 states. [2021-06-05 17:09:54,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3796 to 3598. [2021-06-05 17:09:54,933 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) [2021-06-05 17:09:54,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12047 transitions. [2021-06-05 17:09:54,939 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12047 transitions. Word has length 39 [2021-06-05 17:09:54,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:54,939 INFO L482 AbstractCegarLoop]: Abstraction has 3598 states and 12047 transitions. [2021-06-05 17:09:54,939 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) [2021-06-05 17:09:54,939 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12047 transitions. [2021-06-05 17:09:54,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:54,943 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:54,943 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:54,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 17:09:54,943 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:54,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:54,944 INFO L82 PathProgramCache]: Analyzing trace with hash 368691914, now seen corresponding path program 24 times [2021-06-05 17:09:54,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:54,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997324182] [2021-06-05 17:09:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:55,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:55,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997324182] [2021-06-05 17:09:55,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997324182] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:55,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:55,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 17:09:55,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289964779] [2021-06-05 17:09:55,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:09:55,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:55,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:09:55,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:09:55,131 INFO L87 Difference]: Start difference. First operand 3598 states and 12047 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:56,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:56,279 INFO L93 Difference]: Finished difference Result 3911 states and 12982 transitions. [2021-06-05 17:09:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 17:09:56,279 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 [2021-06-05 17:09:56,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:56,286 INFO L225 Difference]: With dead ends: 3911 [2021-06-05 17:09:56,286 INFO L226 Difference]: Without dead ends: 3781 [2021-06-05 17:09:56,287 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 749.0ms TimeCoverageRelationStatistics Valid=210, Invalid=1860, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 17:09:56,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3781 states. [2021-06-05 17:09:56,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3781 to 3574. [2021-06-05 17:09:56,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.3515253288553035) internal successors, (11975), 3573 states have internal predecessors, (11975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:56,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11975 transitions. [2021-06-05 17:09:56,339 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11975 transitions. Word has length 39 [2021-06-05 17:09:56,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:56,339 INFO L482 AbstractCegarLoop]: Abstraction has 3574 states and 11975 transitions. [2021-06-05 17:09:56,339 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) [2021-06-05 17:09:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11975 transitions. [2021-06-05 17:09:56,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:56,344 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:56,344 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:56,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 17:09:56,344 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:56,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:56,344 INFO L82 PathProgramCache]: Analyzing trace with hash -2088323530, now seen corresponding path program 25 times [2021-06-05 17:09:56,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:56,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469015473] [2021-06-05 17:09:56,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:56,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:56,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:56,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469015473] [2021-06-05 17:09:56,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469015473] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:56,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:56,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:56,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890525175] [2021-06-05 17:09:56,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:56,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:56,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:56,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:56,577 INFO L87 Difference]: Start difference. First operand 3574 states and 11975 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:57,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:57,519 INFO L93 Difference]: Finished difference Result 3867 states and 12844 transitions. [2021-06-05 17:09:57,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 17:09:57,520 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:57,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:57,526 INFO L225 Difference]: With dead ends: 3867 [2021-06-05 17:09:57,526 INFO L226 Difference]: Without dead ends: 3800 [2021-06-05 17:09:57,526 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 676.1ms TimeCoverageRelationStatistics Valid=189, Invalid=1617, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 17:09:57,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2021-06-05 17:09:57,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3574. [2021-06-05 17:09:57,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3574 states, 3573 states have (on average 3.348166806605094) internal successors, (11963), 3573 states have internal predecessors, (11963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:57,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11963 transitions. [2021-06-05 17:09:57,574 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11963 transitions. Word has length 39 [2021-06-05 17:09:57,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:57,574 INFO L482 AbstractCegarLoop]: Abstraction has 3574 states and 11963 transitions. [2021-06-05 17:09:57,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:57,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11963 transitions. [2021-06-05 17:09:57,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:57,578 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:57,578 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:57,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 17:09:57,578 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:57,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:57,578 INFO L82 PathProgramCache]: Analyzing trace with hash 487027796, now seen corresponding path program 26 times [2021-06-05 17:09:57,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:57,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125837883] [2021-06-05 17:09:57,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:57,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:57,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125837883] [2021-06-05 17:09:57,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125837883] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:57,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:57,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:57,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455691855] [2021-06-05 17:09:57,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:57,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:57,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:57,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:57,789 INFO L87 Difference]: Start difference. First operand 3574 states and 11963 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:09:59,184 INFO L93 Difference]: Finished difference Result 3904 states and 12922 transitions. [2021-06-05 17:09:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:09:59,184 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:09:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:09:59,190 INFO L225 Difference]: With dead ends: 3904 [2021-06-05 17:09:59,190 INFO L226 Difference]: Without dead ends: 3843 [2021-06-05 17:09:59,191 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 927.5ms TimeCoverageRelationStatistics Valid=249, Invalid=2201, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 17:09:59,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2021-06-05 17:09:59,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3562. [2021-06-05 17:09:59,233 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) [2021-06-05 17:09:59,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11933 transitions. [2021-06-05 17:09:59,240 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11933 transitions. Word has length 39 [2021-06-05 17:09:59,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:09:59,240 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11933 transitions. [2021-06-05 17:09:59,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:09:59,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11933 transitions. [2021-06-05 17:09:59,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:09:59,244 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:09:59,244 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:09:59,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 17:09:59,244 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:09:59,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:09:59,245 INFO L82 PathProgramCache]: Analyzing trace with hash -673136106, now seen corresponding path program 27 times [2021-06-05 17:09:59,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:09:59,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818898297] [2021-06-05 17:09:59,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:09:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:09:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:09:59,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:09:59,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818898297] [2021-06-05 17:09:59,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818898297] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:09:59,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:09:59,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:09:59,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698828374] [2021-06-05 17:09:59,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:09:59,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:09:59,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:09:59,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:09:59,432 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) [2021-06-05 17:10:00,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:00,362 INFO L93 Difference]: Finished difference Result 3819 states and 12706 transitions. [2021-06-05 17:10:00,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 17:10:00,362 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:00,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:00,368 INFO L225 Difference]: With dead ends: 3819 [2021-06-05 17:10:00,368 INFO L226 Difference]: Without dead ends: 3752 [2021-06-05 17:10:00,369 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 595.4ms TimeCoverageRelationStatistics Valid=176, Invalid=1546, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 17:10:00,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2021-06-05 17:10:00,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3570. [2021-06-05 17:10:00,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3570 states, 3569 states have (on average 3.347996637713645) internal successors, (11949), 3569 states have internal predecessors, (11949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:00,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3570 states to 3570 states and 11949 transitions. [2021-06-05 17:10:00,417 INFO L78 Accepts]: Start accepts. Automaton has 3570 states and 11949 transitions. Word has length 39 [2021-06-05 17:10:00,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:00,418 INFO L482 AbstractCegarLoop]: Abstraction has 3570 states and 11949 transitions. [2021-06-05 17:10:00,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:00,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3570 states and 11949 transitions. [2021-06-05 17:10:00,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:00,422 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:00,422 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:00,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 17:10:00,422 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:00,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:00,422 INFO L82 PathProgramCache]: Analyzing trace with hash -803730954, now seen corresponding path program 28 times [2021-06-05 17:10:00,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:00,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849734898] [2021-06-05 17:10:00,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:00,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:00,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:00,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849734898] [2021-06-05 17:10:00,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849734898] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:00,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:00,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:00,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682013151] [2021-06-05 17:10:00,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:00,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:00,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:00,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:00,630 INFO L87 Difference]: Start difference. First operand 3570 states and 11949 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:01,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:01,604 INFO L93 Difference]: Finished difference Result 3807 states and 12666 transitions. [2021-06-05 17:10:01,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 17:10:01,604 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:01,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:01,610 INFO L225 Difference]: With dead ends: 3807 [2021-06-05 17:10:01,610 INFO L226 Difference]: Without dead ends: 3744 [2021-06-05 17:10:01,611 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 629.2ms TimeCoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 17:10:01,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2021-06-05 17:10:01,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3562. [2021-06-05 17:10:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 3561 states have (on average 3.349901713001966) internal successors, (11929), 3561 states have internal predecessors, (11929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:01,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11929 transitions. [2021-06-05 17:10:01,662 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11929 transitions. Word has length 39 [2021-06-05 17:10:01,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:01,663 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11929 transitions. [2021-06-05 17:10:01,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:01,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11929 transitions. [2021-06-05 17:10:01,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:01,668 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:01,668 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:01,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 17:10:01,668 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:01,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:01,669 INFO L82 PathProgramCache]: Analyzing trace with hash -939409546, now seen corresponding path program 29 times [2021-06-05 17:10:01,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:01,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093777491] [2021-06-05 17:10:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:01,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:01,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093777491] [2021-06-05 17:10:01,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093777491] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:01,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:01,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:01,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213179177] [2021-06-05 17:10:01,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:01,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:01,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:01,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:01,856 INFO L87 Difference]: Start difference. First operand 3562 states and 11929 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:03,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:03,135 INFO L93 Difference]: Finished difference Result 3914 states and 12924 transitions. [2021-06-05 17:10:03,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 17:10:03,135 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:03,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:03,142 INFO L225 Difference]: With dead ends: 3914 [2021-06-05 17:10:03,142 INFO L226 Difference]: Without dead ends: 3865 [2021-06-05 17:10:03,142 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 855.4ms TimeCoverageRelationStatistics Valid=262, Invalid=2390, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 17:10:03,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2021-06-05 17:10:03,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3556. [2021-06-05 17:10:03,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.351336146272855) internal successors, (11914), 3555 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:03,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11914 transitions. [2021-06-05 17:10:03,200 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11914 transitions. Word has length 39 [2021-06-05 17:10:03,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:03,201 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 11914 transitions. [2021-06-05 17:10:03,201 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:03,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11914 transitions. [2021-06-05 17:10:03,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:03,205 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:03,205 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:03,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 17:10:03,205 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:03,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:03,205 INFO L82 PathProgramCache]: Analyzing trace with hash -20925976, now seen corresponding path program 30 times [2021-06-05 17:10:03,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:03,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785874793] [2021-06-05 17:10:03,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:03,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:03,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785874793] [2021-06-05 17:10:03,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785874793] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:03,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:03,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:03,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210270773] [2021-06-05 17:10:03,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:03,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:03,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:03,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:03,415 INFO L87 Difference]: Start difference. First operand 3556 states and 11914 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:04,516 INFO L93 Difference]: Finished difference Result 3841 states and 12736 transitions. [2021-06-05 17:10:04,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 17:10:04,517 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:04,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:04,523 INFO L225 Difference]: With dead ends: 3841 [2021-06-05 17:10:04,523 INFO L226 Difference]: Without dead ends: 3786 [2021-06-05 17:10:04,524 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 700.1ms TimeCoverageRelationStatistics Valid=194, Invalid=1698, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 17:10:04,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-06-05 17:10:04,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3556. [2021-06-05 17:10:04,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 3.350773558368495) internal successors, (11912), 3555 states have internal predecessors, (11912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11912 transitions. [2021-06-05 17:10:04,574 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11912 transitions. Word has length 39 [2021-06-05 17:10:04,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:04,574 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 11912 transitions. [2021-06-05 17:10:04,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:04,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11912 transitions. [2021-06-05 17:10:04,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:04,579 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:04,579 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:04,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 17:10:04,579 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:04,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:04,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1151726246, now seen corresponding path program 31 times [2021-06-05 17:10:04,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:04,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948142945] [2021-06-05 17:10:04,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:04,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:04,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:04,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948142945] [2021-06-05 17:10:04,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948142945] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:04,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:04,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:04,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406585051] [2021-06-05 17:10:04,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:04,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:04,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:04,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:04,774 INFO L87 Difference]: Start difference. First operand 3556 states and 11912 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:05,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:05,719 INFO L93 Difference]: Finished difference Result 3784 states and 12604 transitions. [2021-06-05 17:10:05,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 17:10:05,719 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 [2021-06-05 17:10:05,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:05,726 INFO L225 Difference]: With dead ends: 3784 [2021-06-05 17:10:05,726 INFO L226 Difference]: Without dead ends: 3728 [2021-06-05 17:10:05,726 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 613.1ms TimeCoverageRelationStatistics Valid=180, Invalid=1542, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 17:10:05,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2021-06-05 17:10:05,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 3546. [2021-06-05 17:10:05,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3546 states, 3545 states have (on average 3.3543018335684063) internal successors, (11891), 3545 states have internal predecessors, (11891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:05,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3546 states to 3546 states and 11891 transitions. [2021-06-05 17:10:05,792 INFO L78 Accepts]: Start accepts. Automaton has 3546 states and 11891 transitions. Word has length 39 [2021-06-05 17:10:05,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:05,792 INFO L482 AbstractCegarLoop]: Abstraction has 3546 states and 11891 transitions. [2021-06-05 17:10:05,792 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:05,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3546 states and 11891 transitions. [2021-06-05 17:10:05,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:05,797 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:05,797 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:05,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 17:10:05,797 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:05,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:05,798 INFO L82 PathProgramCache]: Analyzing trace with hash -901192728, now seen corresponding path program 32 times [2021-06-05 17:10:05,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:05,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344340459] [2021-06-05 17:10:05,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:06,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:06,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344340459] [2021-06-05 17:10:06,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344340459] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:06,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:06,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:06,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238818653] [2021-06-05 17:10:06,024 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:06,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:06,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:06,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:06,025 INFO L87 Difference]: Start difference. First operand 3546 states and 11891 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:07,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:07,306 INFO L93 Difference]: Finished difference Result 3995 states and 13156 transitions. [2021-06-05 17:10:07,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 17:10:07,307 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:07,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:07,313 INFO L225 Difference]: With dead ends: 3995 [2021-06-05 17:10:07,313 INFO L226 Difference]: Without dead ends: 3858 [2021-06-05 17:10:07,314 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 896.9ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:10:07,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2021-06-05 17:10:07,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3550. [2021-06-05 17:10:07,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.353338968723584) internal successors, (11901), 3549 states have internal predecessors, (11901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11901 transitions. [2021-06-05 17:10:07,370 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11901 transitions. Word has length 39 [2021-06-05 17:10:07,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:07,371 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11901 transitions. [2021-06-05 17:10:07,371 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:07,371 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11901 transitions. [2021-06-05 17:10:07,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:07,376 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:07,376 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:07,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 17:10:07,377 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:07,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:07,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1898883668, now seen corresponding path program 33 times [2021-06-05 17:10:07,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:07,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268617657] [2021-06-05 17:10:07,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:07,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:07,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268617657] [2021-06-05 17:10:07,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268617657] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:07,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:07,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:07,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681959186] [2021-06-05 17:10:07,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:07,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:07,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:07,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:07,611 INFO L87 Difference]: Start difference. First operand 3550 states and 11901 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:08,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:08,917 INFO L93 Difference]: Finished difference Result 4033 states and 13226 transitions. [2021-06-05 17:10:08,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 17:10:08,917 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:08,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:08,923 INFO L225 Difference]: With dead ends: 4033 [2021-06-05 17:10:08,924 INFO L226 Difference]: Without dead ends: 3969 [2021-06-05 17:10:08,924 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 915.3ms TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 17:10:08,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2021-06-05 17:10:08,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 3550. [2021-06-05 17:10:08,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3550 states, 3549 states have (on average 3.353338968723584) internal successors, (11901), 3549 states have internal predecessors, (11901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:08,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11901 transitions. [2021-06-05 17:10:08,976 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11901 transitions. Word has length 39 [2021-06-05 17:10:08,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:08,976 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11901 transitions. [2021-06-05 17:10:08,976 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) [2021-06-05 17:10:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11901 transitions. [2021-06-05 17:10:08,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:08,981 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:08,981 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:08,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 17:10:08,981 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:08,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:08,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1477600058, now seen corresponding path program 34 times [2021-06-05 17:10:08,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:08,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878760702] [2021-06-05 17:10:08,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:09,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:09,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878760702] [2021-06-05 17:10:09,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878760702] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:09,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:09,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:09,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948445270] [2021-06-05 17:10:09,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:09,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:09,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:09,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:09,182 INFO L87 Difference]: Start difference. First operand 3550 states and 11901 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:10,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:10,164 INFO L93 Difference]: Finished difference Result 3938 states and 12974 transitions. [2021-06-05 17:10:10,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 17:10:10,164 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:10,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:10,171 INFO L225 Difference]: With dead ends: 3938 [2021-06-05 17:10:10,171 INFO L226 Difference]: Without dead ends: 3883 [2021-06-05 17:10:10,171 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 644.3ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 17:10:10,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3883 states. [2021-06-05 17:10:10,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3883 to 3552. [2021-06-05 17:10:10,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3552 states, 3551 states have (on average 3.3522951281329205) internal successors, (11904), 3551 states have internal predecessors, (11904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:10,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 11904 transitions. [2021-06-05 17:10:10,233 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 11904 transitions. Word has length 39 [2021-06-05 17:10:10,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:10,233 INFO L482 AbstractCegarLoop]: Abstraction has 3552 states and 11904 transitions. [2021-06-05 17:10:10,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:10,233 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 11904 transitions. [2021-06-05 17:10:10,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:10,238 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:10,238 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:10,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 17:10:10,239 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:10,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:10,239 INFO L82 PathProgramCache]: Analyzing trace with hash -304947836, now seen corresponding path program 35 times [2021-06-05 17:10:10,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:10,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271030728] [2021-06-05 17:10:10,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:10,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:10,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271030728] [2021-06-05 17:10:10,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271030728] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:10,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:10,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:10,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722978144] [2021-06-05 17:10:10,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:10,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:10,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:10,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:10,467 INFO L87 Difference]: Start difference. First operand 3552 states and 11904 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:11,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:11,550 INFO L93 Difference]: Finished difference Result 3908 states and 12913 transitions. [2021-06-05 17:10:11,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 17:10:11,550 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:11,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:11,556 INFO L225 Difference]: With dead ends: 3908 [2021-06-05 17:10:11,557 INFO L226 Difference]: Without dead ends: 3848 [2021-06-05 17:10:11,557 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 738.6ms TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 17:10:11,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3848 states. [2021-06-05 17:10:11,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3848 to 3550. [2021-06-05 17:10:11,605 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) [2021-06-05 17:10:11,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11899 transitions. [2021-06-05 17:10:11,611 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11899 transitions. Word has length 39 [2021-06-05 17:10:11,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:11,611 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11899 transitions. [2021-06-05 17:10:11,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:11,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11899 transitions. [2021-06-05 17:10:11,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:11,615 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:11,615 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:11,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 17:10:11,615 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:11,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:11,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1910452918, now seen corresponding path program 36 times [2021-06-05 17:10:11,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:11,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936937270] [2021-06-05 17:10:11,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:11,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:11,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:11,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936937270] [2021-06-05 17:10:11,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936937270] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:11,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:11,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 17:10:11,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502130389] [2021-06-05 17:10:11,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:10:11,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:11,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:10:11,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:10:11,827 INFO L87 Difference]: Start difference. First operand 3550 states and 11899 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:12,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:12,699 INFO L93 Difference]: Finished difference Result 3819 states and 12700 transitions. [2021-06-05 17:10:12,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 17:10:12,699 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 [2021-06-05 17:10:12,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:12,705 INFO L225 Difference]: With dead ends: 3819 [2021-06-05 17:10:12,705 INFO L226 Difference]: Without dead ends: 3743 [2021-06-05 17:10:12,705 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 596.1ms TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 17:10:12,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3743 states. [2021-06-05 17:10:12,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3743 to 3558. [2021-06-05 17:10:12,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3557 states have (on average 3.3497329210008435) internal successors, (11915), 3557 states have internal predecessors, (11915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:12,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 11915 transitions. [2021-06-05 17:10:12,750 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 11915 transitions. Word has length 39 [2021-06-05 17:10:12,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:12,750 INFO L482 AbstractCegarLoop]: Abstraction has 3558 states and 11915 transitions. [2021-06-05 17:10:12,750 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) [2021-06-05 17:10:12,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 11915 transitions. [2021-06-05 17:10:12,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:12,755 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:12,755 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:12,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 17:10:12,755 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:12,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:12,755 INFO L82 PathProgramCache]: Analyzing trace with hash 892399306, now seen corresponding path program 37 times [2021-06-05 17:10:12,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:12,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485139799] [2021-06-05 17:10:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:12,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:12,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485139799] [2021-06-05 17:10:12,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485139799] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:12,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:12,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:12,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541258209] [2021-06-05 17:10:12,960 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:12,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:12,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:12,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:12,961 INFO L87 Difference]: Start difference. First operand 3558 states and 11915 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:13,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:13,927 INFO L93 Difference]: Finished difference Result 3801 states and 12646 transitions. [2021-06-05 17:10:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 17:10:13,927 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:13,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:13,933 INFO L225 Difference]: With dead ends: 3801 [2021-06-05 17:10:13,934 INFO L226 Difference]: Without dead ends: 3723 [2021-06-05 17:10:13,934 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 626.3ms TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 17:10:13,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2021-06-05 17:10:13,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3538. [2021-06-05 17:10:13,980 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) [2021-06-05 17:10:13,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 11867 transitions. [2021-06-05 17:10:13,986 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 11867 transitions. Word has length 39 [2021-06-05 17:10:13,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:13,986 INFO L482 AbstractCegarLoop]: Abstraction has 3538 states and 11867 transitions. [2021-06-05 17:10:13,986 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:13,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 11867 transitions. [2021-06-05 17:10:13,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:13,992 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:13,992 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:13,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 17:10:13,992 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:13,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:13,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1082064394, now seen corresponding path program 38 times [2021-06-05 17:10:13,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:13,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596834172] [2021-06-05 17:10:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:14,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:14,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:14,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596834172] [2021-06-05 17:10:14,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596834172] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:14,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:14,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:14,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356889038] [2021-06-05 17:10:14,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:14,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:14,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:14,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:14,204 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) [2021-06-05 17:10:15,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:15,482 INFO L93 Difference]: Finished difference Result 3974 states and 13117 transitions. [2021-06-05 17:10:15,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 17:10:15,483 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:15,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:15,489 INFO L225 Difference]: With dead ends: 3974 [2021-06-05 17:10:15,489 INFO L226 Difference]: Without dead ends: 3868 [2021-06-05 17:10:15,489 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 847.8ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 17:10:15,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2021-06-05 17:10:15,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3554. [2021-06-05 17:10:15,560 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) [2021-06-05 17:10:15,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11919 transitions. [2021-06-05 17:10:15,567 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11919 transitions. Word has length 39 [2021-06-05 17:10:15,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:15,567 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11919 transitions. [2021-06-05 17:10:15,567 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) [2021-06-05 17:10:15,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11919 transitions. [2021-06-05 17:10:15,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:15,572 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:15,572 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:15,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 17:10:15,572 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:15,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:15,572 INFO L82 PathProgramCache]: Analyzing trace with hash -412826506, now seen corresponding path program 39 times [2021-06-05 17:10:15,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:15,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457241421] [2021-06-05 17:10:15,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:15,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:15,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457241421] [2021-06-05 17:10:15,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457241421] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:15,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:15,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:15,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228711418] [2021-06-05 17:10:15,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:15,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:15,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:15,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:15,755 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) [2021-06-05 17:10:16,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:16,981 INFO L93 Difference]: Finished difference Result 4043 states and 13251 transitions. [2021-06-05 17:10:16,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 17:10:16,982 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:16,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:16,988 INFO L225 Difference]: With dead ends: 4043 [2021-06-05 17:10:16,988 INFO L226 Difference]: Without dead ends: 3979 [2021-06-05 17:10:16,989 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 808.7ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:10:17,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2021-06-05 17:10:17,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3554. [2021-06-05 17:10:17,031 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) [2021-06-05 17:10:17,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11919 transitions. [2021-06-05 17:10:17,036 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11919 transitions. Word has length 39 [2021-06-05 17:10:17,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:17,036 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11919 transitions. [2021-06-05 17:10:17,036 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:17,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11919 transitions. [2021-06-05 17:10:17,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:17,040 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:17,040 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:17,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 17:10:17,041 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:17,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:17,041 INFO L82 PathProgramCache]: Analyzing trace with hash 505657064, now seen corresponding path program 40 times [2021-06-05 17:10:17,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:17,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262583515] [2021-06-05 17:10:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:17,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:17,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:17,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262583515] [2021-06-05 17:10:17,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262583515] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:17,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:17,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:17,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79008398] [2021-06-05 17:10:17,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:17,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:17,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:17,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:17,260 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) [2021-06-05 17:10:18,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:18,222 INFO L93 Difference]: Finished difference Result 3940 states and 12979 transitions. [2021-06-05 17:10:18,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 17:10:18,222 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:18,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:18,228 INFO L225 Difference]: With dead ends: 3940 [2021-06-05 17:10:18,228 INFO L226 Difference]: Without dead ends: 3897 [2021-06-05 17:10:18,229 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 645.5ms TimeCoverageRelationStatistics Valid=172, Invalid=1550, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 17:10:18,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2021-06-05 17:10:18,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3560. [2021-06-05 17:10:18,271 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) [2021-06-05 17:10:18,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11932 transitions. [2021-06-05 17:10:18,277 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11932 transitions. Word has length 39 [2021-06-05 17:10:18,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:18,277 INFO L482 AbstractCegarLoop]: Abstraction has 3560 states and 11932 transitions. [2021-06-05 17:10:18,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:18,277 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11932 transitions. [2021-06-05 17:10:18,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:18,281 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:18,281 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:18,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 17:10:18,281 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:18,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:18,281 INFO L82 PathProgramCache]: Analyzing trace with hash 525805798, now seen corresponding path program 41 times [2021-06-05 17:10:18,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:18,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576551908] [2021-06-05 17:10:18,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:18,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:18,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576551908] [2021-06-05 17:10:18,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576551908] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:18,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:18,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:18,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93288436] [2021-06-05 17:10:18,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:18,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:18,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:18,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:18,507 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) [2021-06-05 17:10:19,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:19,577 INFO L93 Difference]: Finished difference Result 3897 states and 12878 transitions. [2021-06-05 17:10:19,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 17:10:19,578 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:19,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:19,584 INFO L225 Difference]: With dead ends: 3897 [2021-06-05 17:10:19,584 INFO L226 Difference]: Without dead ends: 3854 [2021-06-05 17:10:19,584 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 723.2ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 17:10:19,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2021-06-05 17:10:19,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3556. [2021-06-05 17:10:19,625 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) [2021-06-05 17:10:19,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11922 transitions. [2021-06-05 17:10:19,632 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11922 transitions. Word has length 39 [2021-06-05 17:10:19,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:19,632 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 11922 transitions. [2021-06-05 17:10:19,632 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:19,632 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11922 transitions. [2021-06-05 17:10:19,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:19,636 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:19,636 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:19,636 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 17:10:19,636 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:19,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:19,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1678309286, now seen corresponding path program 42 times [2021-06-05 17:10:19,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:19,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848281571] [2021-06-05 17:10:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:19,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:19,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:19,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848281571] [2021-06-05 17:10:19,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848281571] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:19,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:19,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:19,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963980326] [2021-06-05 17:10:19,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:19,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:19,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:19,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:19,850 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) [2021-06-05 17:10:20,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:20,824 INFO L93 Difference]: Finished difference Result 3918 states and 12938 transitions. [2021-06-05 17:10:20,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 17:10:20,825 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:20,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:20,831 INFO L225 Difference]: With dead ends: 3918 [2021-06-05 17:10:20,831 INFO L226 Difference]: Without dead ends: 3858 [2021-06-05 17:10:20,831 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 656.1ms TimeCoverageRelationStatistics Valid=183, Invalid=1623, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 17:10:20,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2021-06-05 17:10:20,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3554. [2021-06-05 17:10:20,874 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) [2021-06-05 17:10:20,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11917 transitions. [2021-06-05 17:10:20,880 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11917 transitions. Word has length 39 [2021-06-05 17:10:20,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:20,880 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11917 transitions. [2021-06-05 17:10:20,880 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:20,880 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11917 transitions. [2021-06-05 17:10:20,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:20,884 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:20,884 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:20,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 17:10:20,884 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:20,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:20,885 INFO L82 PathProgramCache]: Analyzing trace with hash -401257256, now seen corresponding path program 43 times [2021-06-05 17:10:20,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:20,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395361968] [2021-06-05 17:10:20,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:21,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:21,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:21,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395361968] [2021-06-05 17:10:21,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395361968] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:21,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:21,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 17:10:21,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137655736] [2021-06-05 17:10:21,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:10:21,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:21,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:10:21,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:10:21,066 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) [2021-06-05 17:10:21,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:21,869 INFO L93 Difference]: Finished difference Result 3886 states and 12878 transitions. [2021-06-05 17:10:21,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 17:10:21,869 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 [2021-06-05 17:10:21,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:21,875 INFO L225 Difference]: With dead ends: 3886 [2021-06-05 17:10:21,875 INFO L226 Difference]: Without dead ends: 3810 [2021-06-05 17:10:21,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 518.6ms TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 17:10:21,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2021-06-05 17:10:21,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3562. [2021-06-05 17:10:21,919 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) [2021-06-05 17:10:21,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11933 transitions. [2021-06-05 17:10:21,924 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11933 transitions. Word has length 39 [2021-06-05 17:10:21,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:21,924 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11933 transitions. [2021-06-05 17:10:21,924 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) [2021-06-05 17:10:21,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11933 transitions. [2021-06-05 17:10:21,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:21,929 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:21,929 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:21,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 17:10:21,929 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:21,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:21,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1419310868, now seen corresponding path program 44 times [2021-06-05 17:10:21,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:21,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068473335] [2021-06-05 17:10:21,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:22,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:22,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068473335] [2021-06-05 17:10:22,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068473335] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:22,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:22,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:22,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395955879] [2021-06-05 17:10:22,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:22,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:22,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:22,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:22,114 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) [2021-06-05 17:10:23,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:23,004 INFO L93 Difference]: Finished difference Result 3868 states and 12824 transitions. [2021-06-05 17:10:23,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 17:10:23,004 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:23,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:23,010 INFO L225 Difference]: With dead ends: 3868 [2021-06-05 17:10:23,010 INFO L226 Difference]: Without dead ends: 3798 [2021-06-05 17:10:23,011 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 568.8ms TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 17:10:23,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3798 states. [2021-06-05 17:10:23,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3798 to 3550. [2021-06-05 17:10:23,052 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) [2021-06-05 17:10:23,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11905 transitions. [2021-06-05 17:10:23,057 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11905 transitions. Word has length 39 [2021-06-05 17:10:23,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:23,058 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11905 transitions. [2021-06-05 17:10:23,058 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) [2021-06-05 17:10:23,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11905 transitions. [2021-06-05 17:10:23,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:23,061 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:23,062 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:23,062 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 17:10:23,062 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:23,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:23,062 INFO L82 PathProgramCache]: Analyzing trace with hash -573127188, now seen corresponding path program 45 times [2021-06-05 17:10:23,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:23,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480369543] [2021-06-05 17:10:23,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:23,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:23,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480369543] [2021-06-05 17:10:23,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480369543] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:23,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:23,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:23,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283954993] [2021-06-05 17:10:23,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:23,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:23,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:23,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:23,283 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) [2021-06-05 17:10:25,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:25,057 INFO L93 Difference]: Finished difference Result 5576 states and 18929 transitions. [2021-06-05 17:10:25,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 17:10:25,057 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:25,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:25,065 INFO L225 Difference]: With dead ends: 5576 [2021-06-05 17:10:25,065 INFO L226 Difference]: Without dead ends: 5533 [2021-06-05 17:10:25,066 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 1075.0ms TimeCoverageRelationStatistics Valid=302, Invalid=3004, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 17:10:25,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2021-06-05 17:10:25,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 3576. [2021-06-05 17:10:25,117 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) [2021-06-05 17:10:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3576 states to 3576 states and 11988 transitions. [2021-06-05 17:10:25,122 INFO L78 Accepts]: Start accepts. Automaton has 3576 states and 11988 transitions. Word has length 39 [2021-06-05 17:10:25,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:25,122 INFO L482 AbstractCegarLoop]: Abstraction has 3576 states and 11988 transitions. [2021-06-05 17:10:25,122 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:25,122 INFO L276 IsEmpty]: Start isEmpty. Operand 3576 states and 11988 transitions. [2021-06-05 17:10:25,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:25,126 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:25,126 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:25,126 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-05 17:10:25,126 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:25,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:25,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1941241806, now seen corresponding path program 46 times [2021-06-05 17:10:25,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:25,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112844471] [2021-06-05 17:10:25,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:25,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:25,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112844471] [2021-06-05 17:10:25,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112844471] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:25,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:25,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:25,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993670708] [2021-06-05 17:10:25,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:25,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:25,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:25,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:25,331 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) [2021-06-05 17:10:27,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:27,266 INFO L93 Difference]: Finished difference Result 6437 states and 21859 transitions. [2021-06-05 17:10:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 17:10:27,266 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:27,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:27,298 INFO L225 Difference]: With dead ends: 6437 [2021-06-05 17:10:27,299 INFO L226 Difference]: Without dead ends: 6385 [2021-06-05 17:10:27,299 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 1096.7ms TimeCoverageRelationStatistics Valid=344, Invalid=3688, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 17:10:27,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6385 states. [2021-06-05 17:10:27,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6385 to 3562. [2021-06-05 17:10:27,350 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) [2021-06-05 17:10:27,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11947 transitions. [2021-06-05 17:10:27,356 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11947 transitions. Word has length 39 [2021-06-05 17:10:27,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:27,356 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11947 transitions. [2021-06-05 17:10:27,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:27,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11947 transitions. [2021-06-05 17:10:27,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:27,360 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:27,360 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:27,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-05 17:10:27,360 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:27,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:27,361 INFO L82 PathProgramCache]: Analyzing trace with hash 345356382, now seen corresponding path program 47 times [2021-06-05 17:10:27,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:27,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204673070] [2021-06-05 17:10:27,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:27,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:27,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204673070] [2021-06-05 17:10:27,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204673070] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:27,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:27,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:27,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166340981] [2021-06-05 17:10:27,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:27,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:27,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:27,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:27,568 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) [2021-06-05 17:10:29,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:29,003 INFO L93 Difference]: Finished difference Result 5393 states and 18145 transitions. [2021-06-05 17:10:29,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 17:10:29,003 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:29,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:29,012 INFO L225 Difference]: With dead ends: 5393 [2021-06-05 17:10:29,012 INFO L226 Difference]: Without dead ends: 5338 [2021-06-05 17:10:29,012 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 779.6ms TimeCoverageRelationStatistics Valid=226, Invalid=2126, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 17:10:29,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2021-06-05 17:10:29,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 3582. [2021-06-05 17:10:29,062 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) [2021-06-05 17:10:29,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 12013 transitions. [2021-06-05 17:10:29,068 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 12013 transitions. Word has length 39 [2021-06-05 17:10:29,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:29,068 INFO L482 AbstractCegarLoop]: Abstraction has 3582 states and 12013 transitions. [2021-06-05 17:10:29,068 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) [2021-06-05 17:10:29,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 12013 transitions. [2021-06-05 17:10:29,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:29,072 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:29,072 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:29,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-05 17:10:29,072 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:29,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:29,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1518008604, now seen corresponding path program 48 times [2021-06-05 17:10:29,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:29,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336232012] [2021-06-05 17:10:29,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:29,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:29,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336232012] [2021-06-05 17:10:29,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336232012] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:29,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:29,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:29,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542961605] [2021-06-05 17:10:29,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:29,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:29,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:29,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:29,279 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) [2021-06-05 17:10:30,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:30,955 INFO L93 Difference]: Finished difference Result 6254 states and 21079 transitions. [2021-06-05 17:10:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 17:10:30,956 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:30,967 INFO L225 Difference]: With dead ends: 6254 [2021-06-05 17:10:30,968 INFO L226 Difference]: Without dead ends: 6194 [2021-06-05 17:10:30,968 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 955.7ms TimeCoverageRelationStatistics Valid=288, Invalid=2904, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 17:10:30,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2021-06-05 17:10:31,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 3580. [2021-06-05 17:10:31,026 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) [2021-06-05 17:10:31,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 12008 transitions. [2021-06-05 17:10:31,031 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 12008 transitions. Word has length 39 [2021-06-05 17:10:31,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:31,031 INFO L482 AbstractCegarLoop]: Abstraction has 3580 states and 12008 transitions. [2021-06-05 17:10:31,031 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:31,031 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 12008 transitions. [2021-06-05 17:10:31,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:31,035 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:31,035 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:31,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-05 17:10:31,035 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:31,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:31,035 INFO L82 PathProgramCache]: Analyzing trace with hash -359394998, now seen corresponding path program 49 times [2021-06-05 17:10:31,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:31,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196549488] [2021-06-05 17:10:31,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:31,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:31,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:31,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196549488] [2021-06-05 17:10:31,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196549488] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:31,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:31,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:31,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945972010] [2021-06-05 17:10:31,231 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:31,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:31,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:31,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:31,232 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) [2021-06-05 17:10:32,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:32,410 INFO L93 Difference]: Finished difference Result 5284 states and 17876 transitions. [2021-06-05 17:10:32,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 17:10:32,410 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:32,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:32,419 INFO L225 Difference]: With dead ends: 5284 [2021-06-05 17:10:32,419 INFO L226 Difference]: Without dead ends: 5193 [2021-06-05 17:10:32,419 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 627.2ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 17:10:32,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5193 states. [2021-06-05 17:10:32,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5193 to 3580. [2021-06-05 17:10:32,467 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) [2021-06-05 17:10:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 12002 transitions. [2021-06-05 17:10:32,472 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 12002 transitions. Word has length 39 [2021-06-05 17:10:32,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:32,472 INFO L482 AbstractCegarLoop]: Abstraction has 3580 states and 12002 transitions. [2021-06-05 17:10:32,472 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:32,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 12002 transitions. [2021-06-05 17:10:32,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:32,476 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:32,476 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:32,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-05 17:10:32,476 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:32,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:32,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1861877204, now seen corresponding path program 50 times [2021-06-05 17:10:32,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:32,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805356870] [2021-06-05 17:10:32,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:32,653 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:32,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805356870] [2021-06-05 17:10:32,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805356870] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:32,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:32,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:32,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090540651] [2021-06-05 17:10:32,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:32,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:32,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:32,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:32,654 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) [2021-06-05 17:10:34,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:34,128 INFO L93 Difference]: Finished difference Result 6116 states and 20752 transitions. [2021-06-05 17:10:34,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 17:10:34,128 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:34,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:34,138 INFO L225 Difference]: With dead ends: 6116 [2021-06-05 17:10:34,139 INFO L226 Difference]: Without dead ends: 6016 [2021-06-05 17:10:34,140 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 774.1ms TimeCoverageRelationStatistics Valid=238, Invalid=2312, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:10:34,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2021-06-05 17:10:34,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 3574. [2021-06-05 17:10:34,197 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) [2021-06-05 17:10:34,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11977 transitions. [2021-06-05 17:10:34,203 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11977 transitions. Word has length 39 [2021-06-05 17:10:34,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:34,203 INFO L482 AbstractCegarLoop]: Abstraction has 3574 states and 11977 transitions. [2021-06-05 17:10:34,203 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:34,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11977 transitions. [2021-06-05 17:10:34,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:34,231 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:34,231 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:34,231 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-05 17:10:34,231 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:34,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:34,232 INFO L82 PathProgramCache]: Analyzing trace with hash -2098502200, now seen corresponding path program 51 times [2021-06-05 17:10:34,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:34,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474058014] [2021-06-05 17:10:34,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:34,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:34,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474058014] [2021-06-05 17:10:34,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474058014] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:34,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:34,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 17:10:34,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055112956] [2021-06-05 17:10:34,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:10:34,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:34,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:10:34,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:10:34,445 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) [2021-06-05 17:10:35,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:35,239 INFO L93 Difference]: Finished difference Result 3841 states and 12759 transitions. [2021-06-05 17:10:35,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 17:10:35,239 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 [2021-06-05 17:10:35,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:35,245 INFO L225 Difference]: With dead ends: 3841 [2021-06-05 17:10:35,245 INFO L226 Difference]: Without dead ends: 3765 [2021-06-05 17:10:35,246 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 533.7ms TimeCoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 17:10:35,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2021-06-05 17:10:35,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3606. [2021-06-05 17:10:35,286 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) [2021-06-05 17:10:35,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12065 transitions. [2021-06-05 17:10:35,292 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12065 transitions. Word has length 39 [2021-06-05 17:10:35,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:35,292 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 12065 transitions. [2021-06-05 17:10:35,292 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) [2021-06-05 17:10:35,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12065 transitions. [2021-06-05 17:10:35,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:35,297 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:35,297 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:35,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-05 17:10:35,297 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:35,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:35,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1178411484, now seen corresponding path program 52 times [2021-06-05 17:10:35,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:35,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623026348] [2021-06-05 17:10:35,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:35,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:35,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:35,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623026348] [2021-06-05 17:10:35,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623026348] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:35,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:35,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:35,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689291383] [2021-06-05 17:10:35,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:35,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:35,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:35,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:35,475 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) [2021-06-05 17:10:36,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:36,294 INFO L93 Difference]: Finished difference Result 3823 states and 12705 transitions. [2021-06-05 17:10:36,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 17:10:36,295 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:36,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:36,301 INFO L225 Difference]: With dead ends: 3823 [2021-06-05 17:10:36,301 INFO L226 Difference]: Without dead ends: 3757 [2021-06-05 17:10:36,301 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 526.7ms TimeCoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 17:10:36,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2021-06-05 17:10:36,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3598. [2021-06-05 17:10:36,341 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) [2021-06-05 17:10:36,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12041 transitions. [2021-06-05 17:10:36,347 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12041 transitions. Word has length 39 [2021-06-05 17:10:36,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:36,347 INFO L482 AbstractCegarLoop]: Abstraction has 3598 states and 12041 transitions. [2021-06-05 17:10:36,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:36,347 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12041 transitions. [2021-06-05 17:10:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:36,350 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:36,350 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:36,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-05 17:10:36,351 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:36,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:36,351 INFO L82 PathProgramCache]: Analyzing trace with hash 896145830, now seen corresponding path program 53 times [2021-06-05 17:10:36,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:36,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163786882] [2021-06-05 17:10:36,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:36,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:36,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163786882] [2021-06-05 17:10:36,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163786882] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:36,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:36,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:10:36,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239547061] [2021-06-05 17:10:36,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:10:36,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:36,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:10:36,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:10:36,559 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) [2021-06-05 17:10:37,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:37,380 INFO L93 Difference]: Finished difference Result 3832 states and 12726 transitions. [2021-06-05 17:10:37,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 17:10:37,380 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:37,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:37,386 INFO L225 Difference]: With dead ends: 3832 [2021-06-05 17:10:37,386 INFO L226 Difference]: Without dead ends: 3670 [2021-06-05 17:10:37,386 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 549.5ms TimeCoverageRelationStatistics Valid=151, Invalid=1331, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 17:10:37,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2021-06-05 17:10:37,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3530. [2021-06-05 17:10:37,440 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) [2021-06-05 17:10:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 11853 transitions. [2021-06-05 17:10:37,446 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 11853 transitions. Word has length 39 [2021-06-05 17:10:37,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:37,446 INFO L482 AbstractCegarLoop]: Abstraction has 3530 states and 11853 transitions. [2021-06-05 17:10:37,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:37,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 11853 transitions. [2021-06-05 17:10:37,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:37,450 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:37,450 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:37,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-05 17:10:37,450 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:37,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:37,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1440335206, now seen corresponding path program 54 times [2021-06-05 17:10:37,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:37,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167796134] [2021-06-05 17:10:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:37,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:37,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:37,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167796134] [2021-06-05 17:10:37,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167796134] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:37,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:37,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:10:37,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258381707] [2021-06-05 17:10:37,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:10:37,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:37,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:10:37,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:10:37,646 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) [2021-06-05 17:10:38,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:38,750 INFO L93 Difference]: Finished difference Result 3963 states and 13168 transitions. [2021-06-05 17:10:38,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 17:10:38,750 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:38,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:38,756 INFO L225 Difference]: With dead ends: 3963 [2021-06-05 17:10:38,756 INFO L226 Difference]: Without dead ends: 3896 [2021-06-05 17:10:38,757 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 712.5ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 17:10:38,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-06-05 17:10:38,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3566. [2021-06-05 17:10:38,796 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) [2021-06-05 17:10:38,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 11959 transitions. [2021-06-05 17:10:38,802 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 11959 transitions. Word has length 39 [2021-06-05 17:10:38,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:38,802 INFO L482 AbstractCegarLoop]: Abstraction has 3566 states and 11959 transitions. [2021-06-05 17:10:38,802 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) [2021-06-05 17:10:38,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 11959 transitions. [2021-06-05 17:10:38,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:38,806 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:38,806 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:38,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-05 17:10:38,806 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:38,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:38,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1135016120, now seen corresponding path program 55 times [2021-06-05 17:10:38,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:38,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360773132] [2021-06-05 17:10:38,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:39,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:39,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360773132] [2021-06-05 17:10:39,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360773132] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:39,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:39,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:10:39,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325207262] [2021-06-05 17:10:39,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:10:39,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:39,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:10:39,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:10:39,049 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) [2021-06-05 17:10:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:40,470 INFO L93 Difference]: Finished difference Result 4048 states and 13357 transitions. [2021-06-05 17:10:40,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 17:10:40,471 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:40,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:40,477 INFO L225 Difference]: With dead ends: 4048 [2021-06-05 17:10:40,477 INFO L226 Difference]: Without dead ends: 4005 [2021-06-05 17:10:40,477 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 972.9ms TimeCoverageRelationStatistics Valid=283, Invalid=2797, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:10:40,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4005 states. [2021-06-05 17:10:40,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4005 to 3572. [2021-06-05 17:10:40,516 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) [2021-06-05 17:10:40,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3572 states to 3572 states and 11972 transitions. [2021-06-05 17:10:40,521 INFO L78 Accepts]: Start accepts. Automaton has 3572 states and 11972 transitions. Word has length 39 [2021-06-05 17:10:40,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:40,521 INFO L482 AbstractCegarLoop]: Abstraction has 3572 states and 11972 transitions. [2021-06-05 17:10:40,522 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) [2021-06-05 17:10:40,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3572 states and 11972 transitions. [2021-06-05 17:10:40,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:40,525 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:40,525 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:40,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-05 17:10:40,525 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:40,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:40,526 INFO L82 PathProgramCache]: Analyzing trace with hash -645582182, now seen corresponding path program 56 times [2021-06-05 17:10:40,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:40,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170588772] [2021-06-05 17:10:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:40,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:40,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:40,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170588772] [2021-06-05 17:10:40,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170588772] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:40,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:40,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:10:40,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460948588] [2021-06-05 17:10:40,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:10:40,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:40,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:10:40,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:10:40,780 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) [2021-06-05 17:10:42,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:42,151 INFO L93 Difference]: Finished difference Result 4003 states and 13253 transitions. [2021-06-05 17:10:42,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 17:10:42,153 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:42,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:42,159 INFO L225 Difference]: With dead ends: 4003 [2021-06-05 17:10:42,159 INFO L226 Difference]: Without dead ends: 3939 [2021-06-05 17:10:42,159 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 956.3ms TimeCoverageRelationStatistics Valid=274, Invalid=2696, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 17:10:42,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3939 states. [2021-06-05 17:10:42,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3939 to 3554. [2021-06-05 17:10:42,201 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) [2021-06-05 17:10:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11929 transitions. [2021-06-05 17:10:42,206 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11929 transitions. Word has length 39 [2021-06-05 17:10:42,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:42,206 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11929 transitions. [2021-06-05 17:10:42,206 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) [2021-06-05 17:10:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11929 transitions. [2021-06-05 17:10:42,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:42,210 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:42,210 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:42,210 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-05 17:10:42,210 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:42,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:42,210 INFO L82 PathProgramCache]: Analyzing trace with hash -25147782, now seen corresponding path program 57 times [2021-06-05 17:10:42,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:42,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599936626] [2021-06-05 17:10:42,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:42,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:42,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599936626] [2021-06-05 17:10:42,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599936626] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:42,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:42,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:10:42,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310735971] [2021-06-05 17:10:42,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:10:42,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:42,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:10:42,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:10:42,417 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) [2021-06-05 17:10:43,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:43,505 INFO L93 Difference]: Finished difference Result 3963 states and 13162 transitions. [2021-06-05 17:10:43,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 17:10:43,505 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 [2021-06-05 17:10:43,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:43,511 INFO L225 Difference]: With dead ends: 3963 [2021-06-05 17:10:43,511 INFO L226 Difference]: Without dead ends: 3896 [2021-06-05 17:10:43,511 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 722.6ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 17:10:43,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-06-05 17:10:43,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3562. [2021-06-05 17:10:43,551 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) [2021-06-05 17:10:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11945 transitions. [2021-06-05 17:10:43,556 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11945 transitions. Word has length 39 [2021-06-05 17:10:43,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:43,556 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11945 transitions. [2021-06-05 17:10:43,556 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:43,556 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11945 transitions. [2021-06-05 17:10:43,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:43,560 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:43,560 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:43,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-05 17:10:43,560 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:43,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:43,561 INFO L82 PathProgramCache]: Analyzing trace with hash -155742630, now seen corresponding path program 58 times [2021-06-05 17:10:43,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:43,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760167941] [2021-06-05 17:10:43,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:43,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:43,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760167941] [2021-06-05 17:10:43,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760167941] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:43,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:43,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:10:43,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534692842] [2021-06-05 17:10:43,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:10:43,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:43,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:10:43,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:10:43,784 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) [2021-06-05 17:10:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:44,888 INFO L93 Difference]: Finished difference Result 3951 states and 13122 transitions. [2021-06-05 17:10:44,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:10:44,888 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:44,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:44,894 INFO L225 Difference]: With dead ends: 3951 [2021-06-05 17:10:44,894 INFO L226 Difference]: Without dead ends: 3888 [2021-06-05 17:10:44,894 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 736.3ms TimeCoverageRelationStatistics Valid=227, Invalid=2125, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 17:10:44,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-06-05 17:10:44,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3554. [2021-06-05 17:10:44,934 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) [2021-06-05 17:10:44,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11925 transitions. [2021-06-05 17:10:44,939 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11925 transitions. Word has length 39 [2021-06-05 17:10:44,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:44,939 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11925 transitions. [2021-06-05 17:10:44,939 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:44,939 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11925 transitions. [2021-06-05 17:10:44,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:44,942 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:44,943 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:44,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-05 17:10:44,943 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:44,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:44,943 INFO L82 PathProgramCache]: Analyzing trace with hash -291421222, now seen corresponding path program 59 times [2021-06-05 17:10:44,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:44,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003359157] [2021-06-05 17:10:44,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:45,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:45,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003359157] [2021-06-05 17:10:45,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003359157] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:45,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:45,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:10:45,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678541461] [2021-06-05 17:10:45,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:10:45,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:45,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:10:45,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:10:45,142 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) [2021-06-05 17:10:46,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:46,570 INFO L93 Difference]: Finished difference Result 4114 states and 13511 transitions. [2021-06-05 17:10:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 17:10:46,570 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 [2021-06-05 17:10:46,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:46,577 INFO L225 Difference]: With dead ends: 4114 [2021-06-05 17:10:46,577 INFO L226 Difference]: Without dead ends: 4071 [2021-06-05 17:10:46,577 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 951.9ms TimeCoverageRelationStatistics Valid=300, Invalid=3006, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 17:10:46,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2021-06-05 17:10:46,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 3562. [2021-06-05 17:10:46,620 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) [2021-06-05 17:10:46,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 11945 transitions. [2021-06-05 17:10:46,625 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 11945 transitions. Word has length 39 [2021-06-05 17:10:46,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:46,625 INFO L482 AbstractCegarLoop]: Abstraction has 3562 states and 11945 transitions. [2021-06-05 17:10:46,625 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:46,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 11945 transitions. [2021-06-05 17:10:46,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:46,629 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:46,629 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:46,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-05 17:10:46,629 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:46,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:46,629 INFO L82 PathProgramCache]: Analyzing trace with hash -2072019524, now seen corresponding path program 60 times [2021-06-05 17:10:46,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:46,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723977696] [2021-06-05 17:10:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:46,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:46,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:46,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723977696] [2021-06-05 17:10:46,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723977696] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:46,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:46,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:10:46,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169865865] [2021-06-05 17:10:46,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:10:46,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:46,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:10:46,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:10:46,862 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) [2021-06-05 17:10:48,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:48,273 INFO L93 Difference]: Finished difference Result 4102 states and 13473 transitions. [2021-06-05 17:10:48,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:10:48,273 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:48,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:48,279 INFO L225 Difference]: With dead ends: 4102 [2021-06-05 17:10:48,279 INFO L226 Difference]: Without dead ends: 4050 [2021-06-05 17:10:48,280 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 965.9ms TimeCoverageRelationStatistics Valid=292, Invalid=2900, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 17:10:48,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4050 states. [2021-06-05 17:10:48,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4050 to 3554. [2021-06-05 17:10:48,319 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) [2021-06-05 17:10:48,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 11925 transitions. [2021-06-05 17:10:48,324 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 11925 transitions. Word has length 39 [2021-06-05 17:10:48,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:48,324 INFO L482 AbstractCegarLoop]: Abstraction has 3554 states and 11925 transitions. [2021-06-05 17:10:48,324 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:48,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 11925 transitions. [2021-06-05 17:10:48,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:48,328 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:48,328 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:48,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-05 17:10:48,328 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:48,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:48,328 INFO L82 PathProgramCache]: Analyzing trace with hash 627062348, now seen corresponding path program 61 times [2021-06-05 17:10:48,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:48,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480532628] [2021-06-05 17:10:48,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:48,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:48,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480532628] [2021-06-05 17:10:48,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480532628] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:48,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:48,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:10:48,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827345615] [2021-06-05 17:10:48,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:10:48,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:48,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:10:48,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:10:48,528 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) [2021-06-05 17:10:49,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:49,684 INFO L93 Difference]: Finished difference Result 4079 states and 13396 transitions. [2021-06-05 17:10:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 17:10:49,684 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:49,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:49,691 INFO L225 Difference]: With dead ends: 4079 [2021-06-05 17:10:49,691 INFO L226 Difference]: Without dead ends: 4024 [2021-06-05 17:10:49,691 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 752.8ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:10:49,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-06-05 17:10:49,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3556. [2021-06-05 17:10:49,730 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) [2021-06-05 17:10:49,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 11928 transitions. [2021-06-05 17:10:49,736 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 11928 transitions. Word has length 39 [2021-06-05 17:10:49,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:49,736 INFO L482 AbstractCegarLoop]: Abstraction has 3556 states and 11928 transitions. [2021-06-05 17:10:49,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:49,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 11928 transitions. [2021-06-05 17:10:49,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:49,739 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:49,739 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:49,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-05 17:10:49,739 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:49,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:49,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1799714570, now seen corresponding path program 62 times [2021-06-05 17:10:49,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:49,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931816244] [2021-06-05 17:10:49,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:49,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:49,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:49,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931816244] [2021-06-05 17:10:49,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931816244] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:49,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:49,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:10:49,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613370192] [2021-06-05 17:10:49,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:10:49,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:49,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:10:49,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:10:49,941 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) [2021-06-05 17:10:51,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:51,012 INFO L93 Difference]: Finished difference Result 4014 states and 13244 transitions. [2021-06-05 17:10:51,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 17:10:51,013 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 [2021-06-05 17:10:51,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:51,019 INFO L225 Difference]: With dead ends: 4014 [2021-06-05 17:10:51,019 INFO L226 Difference]: Without dead ends: 3968 [2021-06-05 17:10:51,019 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 698.2ms TimeCoverageRelationStatistics Valid=219, Invalid=2037, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 17:10:51,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2021-06-05 17:10:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3560. [2021-06-05 17:10:51,060 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) [2021-06-05 17:10:51,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 11936 transitions. [2021-06-05 17:10:51,065 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 11936 transitions. Word has length 39 [2021-06-05 17:10:51,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:51,065 INFO L482 AbstractCegarLoop]: Abstraction has 3560 states and 11936 transitions. [2021-06-05 17:10:51,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:51,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 11936 transitions. [2021-06-05 17:10:51,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:51,069 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:51,069 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:51,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-05 17:10:51,069 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:51,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:51,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1552248408, now seen corresponding path program 63 times [2021-06-05 17:10:51,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:51,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120996450] [2021-06-05 17:10:51,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:51,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:51,262 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:51,262 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120996450] [2021-06-05 17:10:51,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120996450] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:51,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:51,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:10:51,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057888624] [2021-06-05 17:10:51,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:10:51,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:51,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:10:51,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:10:51,263 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) [2021-06-05 17:10:52,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:52,517 INFO L93 Difference]: Finished difference Result 3980 states and 13174 transitions. [2021-06-05 17:10:52,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 17:10:52,517 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:52,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:52,523 INFO L225 Difference]: With dead ends: 3980 [2021-06-05 17:10:52,523 INFO L226 Difference]: Without dead ends: 3931 [2021-06-05 17:10:52,524 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 854.3ms TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 17:10:52,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-06-05 17:10:52,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3550. [2021-06-05 17:10:52,565 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) [2021-06-05 17:10:52,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11915 transitions. [2021-06-05 17:10:52,570 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11915 transitions. Word has length 39 [2021-06-05 17:10:52,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:52,570 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11915 transitions. [2021-06-05 17:10:52,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:52,570 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11915 transitions. [2021-06-05 17:10:52,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:52,575 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:52,575 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:52,575 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-05 17:10:52,575 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:52,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:52,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1203843366, now seen corresponding path program 64 times [2021-06-05 17:10:52,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:52,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063009035] [2021-06-05 17:10:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:52,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:52,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:52,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063009035] [2021-06-05 17:10:52,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063009035] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:52,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:52,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:10:52,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592734052] [2021-06-05 17:10:52,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:10:52,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:52,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:10:52,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:10:52,769 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) [2021-06-05 17:10:53,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:53,833 INFO L93 Difference]: Finished difference Result 4021 states and 13349 transitions. [2021-06-05 17:10:53,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 17:10:53,834 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:53,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:53,840 INFO L225 Difference]: With dead ends: 4021 [2021-06-05 17:10:53,840 INFO L226 Difference]: Without dead ends: 3954 [2021-06-05 17:10:53,840 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 626.5ms TimeCoverageRelationStatistics Valid=184, Invalid=1708, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 17:10:53,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2021-06-05 17:10:53,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3590. [2021-06-05 17:10:53,883 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) [2021-06-05 17:10:53,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 12023 transitions. [2021-06-05 17:10:53,889 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 12023 transitions. Word has length 39 [2021-06-05 17:10:53,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:53,889 INFO L482 AbstractCegarLoop]: Abstraction has 3590 states and 12023 transitions. [2021-06-05 17:10:53,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:53,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 12023 transitions. [2021-06-05 17:10:53,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:53,894 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:53,894 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:53,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-05 17:10:53,894 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:53,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:53,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1334438214, now seen corresponding path program 65 times [2021-06-05 17:10:53,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:53,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440506588] [2021-06-05 17:10:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:54,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:54,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440506588] [2021-06-05 17:10:54,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440506588] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:54,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:54,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:10:54,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727890940] [2021-06-05 17:10:54,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:10:54,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:54,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:10:54,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:10:54,120 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) [2021-06-05 17:10:55,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:55,239 INFO L93 Difference]: Finished difference Result 4009 states and 13309 transitions. [2021-06-05 17:10:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 17:10:55,239 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 [2021-06-05 17:10:55,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:55,245 INFO L225 Difference]: With dead ends: 4009 [2021-06-05 17:10:55,245 INFO L226 Difference]: Without dead ends: 3946 [2021-06-05 17:10:55,245 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 679.3ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 17:10:55,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2021-06-05 17:10:55,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3582. [2021-06-05 17:10:55,288 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) [2021-06-05 17:10:55,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 11999 transitions. [2021-06-05 17:10:55,294 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 11999 transitions. Word has length 39 [2021-06-05 17:10:55,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:55,294 INFO L482 AbstractCegarLoop]: Abstraction has 3582 states and 11999 transitions. [2021-06-05 17:10:55,294 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:55,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 11999 transitions. [2021-06-05 17:10:55,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:55,298 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:55,298 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:55,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-05 17:10:55,299 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:55,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:55,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1864338662, now seen corresponding path program 66 times [2021-06-05 17:10:55,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:55,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091866744] [2021-06-05 17:10:55,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:55,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:55,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:55,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091866744] [2021-06-05 17:10:55,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091866744] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:55,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:55,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:10:55,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924374634] [2021-06-05 17:10:55,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:10:55,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:55,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:10:55,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:10:55,493 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) [2021-06-05 17:10:56,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:56,545 INFO L93 Difference]: Finished difference Result 4021 states and 13337 transitions. [2021-06-05 17:10:56,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 17:10:56,545 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:56,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:56,551 INFO L225 Difference]: With dead ends: 4021 [2021-06-05 17:10:56,552 INFO L226 Difference]: Without dead ends: 3898 [2021-06-05 17:10:56,552 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 616.4ms TimeCoverageRelationStatistics Valid=182, Invalid=1710, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 17:10:56,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2021-06-05 17:10:56,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 3550. [2021-06-05 17:10:56,591 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) [2021-06-05 17:10:56,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3550 states to 3550 states and 11899 transitions. [2021-06-05 17:10:56,596 INFO L78 Accepts]: Start accepts. Automaton has 3550 states and 11899 transitions. Word has length 39 [2021-06-05 17:10:56,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:56,596 INFO L482 AbstractCegarLoop]: Abstraction has 3550 states and 11899 transitions. [2021-06-05 17:10:56,596 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) [2021-06-05 17:10:56,596 INFO L276 IsEmpty]: Start isEmpty. Operand 3550 states and 11899 transitions. [2021-06-05 17:10:56,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:56,600 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:56,600 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:56,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-05 17:10:56,600 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:56,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:56,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1712217464, now seen corresponding path program 67 times [2021-06-05 17:10:56,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:56,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118450586] [2021-06-05 17:10:56,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:56,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:56,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118450586] [2021-06-05 17:10:56,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118450586] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:56,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:56,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:10:56,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072861453] [2021-06-05 17:10:56,795 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:10:56,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:56,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:10:56,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:10:56,795 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) [2021-06-05 17:10:58,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:10:58,710 INFO L93 Difference]: Finished difference Result 5827 states and 19628 transitions. [2021-06-05 17:10:58,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 17:10:58,711 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:10:58,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:10:58,720 INFO L225 Difference]: With dead ends: 5827 [2021-06-05 17:10:58,720 INFO L226 Difference]: Without dead ends: 5741 [2021-06-05 17:10:58,721 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 1091.5ms TimeCoverageRelationStatistics Valid=346, Invalid=3814, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 17:10:58,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5741 states. [2021-06-05 17:10:58,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5741 to 3628. [2021-06-05 17:10:58,775 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) [2021-06-05 17:10:58,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 12148 transitions. [2021-06-05 17:10:58,780 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 12148 transitions. Word has length 39 [2021-06-05 17:10:58,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:10:58,780 INFO L482 AbstractCegarLoop]: Abstraction has 3628 states and 12148 transitions. [2021-06-05 17:10:58,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:10:58,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 12148 transitions. [2021-06-05 17:10:58,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:10:58,789 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:10:58,789 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:10:58,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-05 17:10:58,789 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:10:58,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:10:58,789 INFO L82 PathProgramCache]: Analyzing trace with hash -68380838, now seen corresponding path program 68 times [2021-06-05 17:10:58,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:10:58,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62526147] [2021-06-05 17:10:58,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:10:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:10:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:10:58,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:10:58,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62526147] [2021-06-05 17:10:58,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62526147] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:10:58,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:10:58,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:10:58,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703387387] [2021-06-05 17:10:58,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:10:58,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:10:58,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:10:58,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:10:58,998 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) [2021-06-05 17:11:01,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:01,172 INFO L93 Difference]: Finished difference Result 6643 states and 22454 transitions. [2021-06-05 17:11:01,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 17:11:01,172 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:01,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:01,183 INFO L225 Difference]: With dead ends: 6643 [2021-06-05 17:11:01,183 INFO L226 Difference]: Without dead ends: 6539 [2021-06-05 17:11:01,183 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1381 ImplicationChecksByTransitivity, 1240.9ms TimeCoverageRelationStatistics Valid=389, Invalid=4581, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 17:11:01,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2021-06-05 17:11:01,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 3598. [2021-06-05 17:11:01,236 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) [2021-06-05 17:11:01,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 12047 transitions. [2021-06-05 17:11:01,241 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 12047 transitions. Word has length 39 [2021-06-05 17:11:01,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:01,241 INFO L482 AbstractCegarLoop]: Abstraction has 3598 states and 12047 transitions. [2021-06-05 17:11:01,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:01,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 12047 transitions. [2021-06-05 17:11:01,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:01,244 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:01,244 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:01,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-05 17:11:01,245 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:01,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:01,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1664266262, now seen corresponding path program 69 times [2021-06-05 17:11:01,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:01,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237430437] [2021-06-05 17:11:01,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:01,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:01,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237430437] [2021-06-05 17:11:01,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237430437] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:01,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:01,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:01,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185150213] [2021-06-05 17:11:01,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:01,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:01,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:01,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:01,440 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) [2021-06-05 17:11:02,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:02,965 INFO L93 Difference]: Finished difference Result 5563 states and 18662 transitions. [2021-06-05 17:11:02,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:11:02,966 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 [2021-06-05 17:11:02,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:02,974 INFO L225 Difference]: With dead ends: 5563 [2021-06-05 17:11:02,974 INFO L226 Difference]: Without dead ends: 5508 [2021-06-05 17:11:02,974 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 855.3ms TimeCoverageRelationStatistics Valid=267, Invalid=2703, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 17:11:02,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2021-06-05 17:11:03,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 3626. [2021-06-05 17:11:03,022 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) [2021-06-05 17:11:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12137 transitions. [2021-06-05 17:11:03,027 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12137 transitions. Word has length 39 [2021-06-05 17:11:03,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:03,027 INFO L482 AbstractCegarLoop]: Abstraction has 3626 states and 12137 transitions. [2021-06-05 17:11:03,027 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) [2021-06-05 17:11:03,027 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12137 transitions. [2021-06-05 17:11:03,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:03,031 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:03,031 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:03,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-05 17:11:03,031 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:03,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:03,031 INFO L82 PathProgramCache]: Analyzing trace with hash -491614040, now seen corresponding path program 70 times [2021-06-05 17:11:03,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:03,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310968766] [2021-06-05 17:11:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:03,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:03,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:03,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310968766] [2021-06-05 17:11:03,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310968766] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:03,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:03,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:03,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918975720] [2021-06-05 17:11:03,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:03,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:03,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:03,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:03,285 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) [2021-06-05 17:11:05,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:05,081 INFO L93 Difference]: Finished difference Result 6424 states and 21596 transitions. [2021-06-05 17:11:05,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 17:11:05,081 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:05,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:05,090 INFO L225 Difference]: With dead ends: 6424 [2021-06-05 17:11:05,091 INFO L226 Difference]: Without dead ends: 6364 [2021-06-05 17:11:05,091 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1012.4ms TimeCoverageRelationStatistics Valid=298, Invalid=3242, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 17:11:05,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2021-06-05 17:11:05,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 3624. [2021-06-05 17:11:05,142 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) [2021-06-05 17:11:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 12132 transitions. [2021-06-05 17:11:05,147 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 12132 transitions. Word has length 39 [2021-06-05 17:11:05,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:05,147 INFO L482 AbstractCegarLoop]: Abstraction has 3624 states and 12132 transitions. [2021-06-05 17:11:05,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:05,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 12132 transitions. [2021-06-05 17:11:05,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:05,151 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:05,151 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:05,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-05 17:11:05,151 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:05,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:05,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1925949654, now seen corresponding path program 71 times [2021-06-05 17:11:05,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:05,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067166906] [2021-06-05 17:11:05,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:05,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:05,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067166906] [2021-06-05 17:11:05,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067166906] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:05,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:05,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:05,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579490292] [2021-06-05 17:11:05,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:05,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:05,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:05,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:05,377 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) [2021-06-05 17:11:06,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:06,830 INFO L93 Difference]: Finished difference Result 5514 states and 18559 transitions. [2021-06-05 17:11:06,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 17:11:06,830 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:06,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:06,839 INFO L225 Difference]: With dead ends: 5514 [2021-06-05 17:11:06,839 INFO L226 Difference]: Without dead ends: 5423 [2021-06-05 17:11:06,839 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 810.7ms TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:11:06,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2021-06-05 17:11:06,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 3624. [2021-06-05 17:11:06,886 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) [2021-06-05 17:11:06,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 12126 transitions. [2021-06-05 17:11:06,892 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 12126 transitions. Word has length 39 [2021-06-05 17:11:06,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:06,892 INFO L482 AbstractCegarLoop]: Abstraction has 3624 states and 12126 transitions. [2021-06-05 17:11:06,892 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:06,892 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 12126 transitions. [2021-06-05 17:11:06,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:06,898 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:06,898 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:06,898 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-05 17:11:06,898 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:06,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:06,898 INFO L82 PathProgramCache]: Analyzing trace with hash 423467448, now seen corresponding path program 72 times [2021-06-05 17:11:06,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:06,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893371741] [2021-06-05 17:11:06,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:07,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:07,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:07,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893371741] [2021-06-05 17:11:07,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893371741] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:07,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:07,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:07,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554044589] [2021-06-05 17:11:07,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:07,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:07,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:07,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:07,109 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) [2021-06-05 17:11:08,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:08,755 INFO L93 Difference]: Finished difference Result 6327 states and 21361 transitions. [2021-06-05 17:11:08,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:11:08,755 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:08,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:08,765 INFO L225 Difference]: With dead ends: 6327 [2021-06-05 17:11:08,765 INFO L226 Difference]: Without dead ends: 6211 [2021-06-05 17:11:08,765 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 879.0ms TimeCoverageRelationStatistics Valid=257, Invalid=2713, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 17:11:08,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6211 states. [2021-06-05 17:11:08,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6211 to 3586. [2021-06-05 17:11:08,813 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) [2021-06-05 17:11:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 12021 transitions. [2021-06-05 17:11:08,818 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 12021 transitions. Word has length 39 [2021-06-05 17:11:08,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:08,818 INFO L482 AbstractCegarLoop]: Abstraction has 3586 states and 12021 transitions. [2021-06-05 17:11:08,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:08,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 12021 transitions. [2021-06-05 17:11:08,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:08,822 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:08,822 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:08,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-05 17:11:08,822 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:08,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:08,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1052700712, now seen corresponding path program 73 times [2021-06-05 17:11:08,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:08,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768840385] [2021-06-05 17:11:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:09,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:09,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768840385] [2021-06-05 17:11:09,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768840385] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:09,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:09,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:09,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839704922] [2021-06-05 17:11:09,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:09,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:09,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:09,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:09,011 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) [2021-06-05 17:11:09,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:09,863 INFO L93 Difference]: Finished difference Result 3853 states and 12803 transitions. [2021-06-05 17:11:09,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 17:11:09,863 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:09,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:09,869 INFO L225 Difference]: With dead ends: 3853 [2021-06-05 17:11:09,869 INFO L226 Difference]: Without dead ends: 3786 [2021-06-05 17:11:09,870 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 553.3ms TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 17:11:09,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-06-05 17:11:09,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3634. [2021-06-05 17:11:09,908 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) [2021-06-05 17:11:09,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 12149 transitions. [2021-06-05 17:11:09,913 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 12149 transitions. Word has length 39 [2021-06-05 17:11:09,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:09,913 INFO L482 AbstractCegarLoop]: Abstraction has 3634 states and 12149 transitions. [2021-06-05 17:11:09,913 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) [2021-06-05 17:11:09,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 12149 transitions. [2021-06-05 17:11:09,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:09,917 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:09,917 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:09,917 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-05 17:11:09,917 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:09,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:09,918 INFO L82 PathProgramCache]: Analyzing trace with hash 880557494, now seen corresponding path program 74 times [2021-06-05 17:11:09,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:09,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927488985] [2021-06-05 17:11:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:10,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:10,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927488985] [2021-06-05 17:11:10,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927488985] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:10,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:10,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:10,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803219616] [2021-06-05 17:11:10,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:10,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:10,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:10,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:10,117 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) [2021-06-05 17:11:11,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:11,006 INFO L93 Difference]: Finished difference Result 3841 states and 12763 transitions. [2021-06-05 17:11:11,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 17:11:11,007 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 [2021-06-05 17:11:11,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:11,012 INFO L225 Difference]: With dead ends: 3841 [2021-06-05 17:11:11,012 INFO L226 Difference]: Without dead ends: 3778 [2021-06-05 17:11:11,012 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 581.6ms TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 17:11:11,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2021-06-05 17:11:11,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3626. [2021-06-05 17:11:11,050 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) [2021-06-05 17:11:11,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12125 transitions. [2021-06-05 17:11:11,055 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12125 transitions. Word has length 39 [2021-06-05 17:11:11,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:11,055 INFO L482 AbstractCegarLoop]: Abstraction has 3626 states and 12125 transitions. [2021-06-05 17:11:11,055 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:11,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12125 transitions. [2021-06-05 17:11:11,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:11,060 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:11,060 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:11,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-05 17:11:11,060 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:11,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:11,060 INFO L82 PathProgramCache]: Analyzing trace with hash -922276662, now seen corresponding path program 75 times [2021-06-05 17:11:11,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:11,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734828158] [2021-06-05 17:11:11,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:11,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:11,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734828158] [2021-06-05 17:11:11,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734828158] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:11,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:11,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:11,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386484958] [2021-06-05 17:11:11,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:11,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:11,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:11,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:11,250 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) [2021-06-05 17:11:12,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:12,115 INFO L93 Difference]: Finished difference Result 3841 states and 12755 transitions. [2021-06-05 17:11:12,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 17:11:12,115 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:12,121 INFO L225 Difference]: With dead ends: 3841 [2021-06-05 17:11:12,121 INFO L226 Difference]: Without dead ends: 3698 [2021-06-05 17:11:12,121 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 554.8ms TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 17:11:12,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-06-05 17:11:12,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3574. [2021-06-05 17:11:12,158 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) [2021-06-05 17:11:12,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 11989 transitions. [2021-06-05 17:11:12,163 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 11989 transitions. Word has length 39 [2021-06-05 17:11:12,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:12,163 INFO L482 AbstractCegarLoop]: Abstraction has 3574 states and 11989 transitions. [2021-06-05 17:11:12,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:12,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 11989 transitions. [2021-06-05 17:11:12,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:12,167 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:12,167 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:12,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-05 17:11:12,167 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:12,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:12,167 INFO L82 PathProgramCache]: Analyzing trace with hash -235569416, now seen corresponding path program 76 times [2021-06-05 17:11:12,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:12,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216672386] [2021-06-05 17:11:12,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:12,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:12,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216672386] [2021-06-05 17:11:12,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216672386] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:12,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:12,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:12,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603828231] [2021-06-05 17:11:12,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:12,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:12,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:12,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:12,359 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) [2021-06-05 17:11:13,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:13,379 INFO L93 Difference]: Finished difference Result 3979 states and 13198 transitions. [2021-06-05 17:11:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 17:11:13,380 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:13,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:13,386 INFO L225 Difference]: With dead ends: 3979 [2021-06-05 17:11:13,386 INFO L226 Difference]: Without dead ends: 3912 [2021-06-05 17:11:13,386 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 660.3ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 17:11:13,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2021-06-05 17:11:13,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3622. [2021-06-05 17:11:13,427 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) [2021-06-05 17:11:13,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 12135 transitions. [2021-06-05 17:11:13,433 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 12135 transitions. Word has length 39 [2021-06-05 17:11:13,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:13,433 INFO L482 AbstractCegarLoop]: Abstraction has 3622 states and 12135 transitions. [2021-06-05 17:11:13,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:13,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 12135 transitions. [2021-06-05 17:11:13,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:13,437 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:13,437 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:13,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-05 17:11:13,437 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:13,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:13,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1955185386, now seen corresponding path program 77 times [2021-06-05 17:11:13,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:13,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898437908] [2021-06-05 17:11:13,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:13,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:13,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898437908] [2021-06-05 17:11:13,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898437908] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:13,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:13,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:13,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823490558] [2021-06-05 17:11:13,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:13,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:13,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:13,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:13,642 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) [2021-06-05 17:11:14,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:14,959 INFO L93 Difference]: Finished difference Result 4064 states and 13387 transitions. [2021-06-05 17:11:14,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 17:11:14,959 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:14,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:14,965 INFO L225 Difference]: With dead ends: 4064 [2021-06-05 17:11:14,965 INFO L226 Difference]: Without dead ends: 4021 [2021-06-05 17:11:14,966 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 880.3ms TimeCoverageRelationStatistics Valid=263, Invalid=2599, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 17:11:14,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2021-06-05 17:11:15,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 3628. [2021-06-05 17:11:15,006 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) [2021-06-05 17:11:15,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 12148 transitions. [2021-06-05 17:11:15,012 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 12148 transitions. Word has length 39 [2021-06-05 17:11:15,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:15,012 INFO L482 AbstractCegarLoop]: Abstraction has 3628 states and 12148 transitions. [2021-06-05 17:11:15,012 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:15,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 12148 transitions. [2021-06-05 17:11:15,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:15,016 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:15,016 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:15,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-05 17:11:15,016 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:15,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:15,016 INFO L82 PathProgramCache]: Analyzing trace with hash 559183608, now seen corresponding path program 78 times [2021-06-05 17:11:15,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:15,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753233778] [2021-06-05 17:11:15,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:15,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:15,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:15,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753233778] [2021-06-05 17:11:15,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753233778] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:15,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:15,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:15,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372245308] [2021-06-05 17:11:15,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:15,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:15,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:15,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:15,226 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) [2021-06-05 17:11:16,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:16,527 INFO L93 Difference]: Finished difference Result 4019 states and 13283 transitions. [2021-06-05 17:11:16,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 17:11:16,527 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 [2021-06-05 17:11:16,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:16,533 INFO L225 Difference]: With dead ends: 4019 [2021-06-05 17:11:16,533 INFO L226 Difference]: Without dead ends: 3955 [2021-06-05 17:11:16,534 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 884.3ms TimeCoverageRelationStatistics Valid=254, Invalid=2502, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 17:11:16,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-06-05 17:11:16,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3610. [2021-06-05 17:11:16,575 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) [2021-06-05 17:11:16,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12105 transitions. [2021-06-05 17:11:16,580 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12105 transitions. Word has length 39 [2021-06-05 17:11:16,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:16,580 INFO L482 AbstractCegarLoop]: Abstraction has 3610 states and 12105 transitions. [2021-06-05 17:11:16,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:16,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12105 transitions. [2021-06-05 17:11:16,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:16,584 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:16,584 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:16,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-05 17:11:16,584 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:16,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:16,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1179618008, now seen corresponding path program 79 times [2021-06-05 17:11:16,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:16,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812775978] [2021-06-05 17:11:16,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:16,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:16,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812775978] [2021-06-05 17:11:16,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812775978] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:16,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:16,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:16,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271620153] [2021-06-05 17:11:16,774 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:16,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:16,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:16,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:16,774 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) [2021-06-05 17:11:17,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:17,801 INFO L93 Difference]: Finished difference Result 3979 states and 13192 transitions. [2021-06-05 17:11:17,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 17:11:17,801 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:17,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:17,808 INFO L225 Difference]: With dead ends: 3979 [2021-06-05 17:11:17,808 INFO L226 Difference]: Without dead ends: 3912 [2021-06-05 17:11:17,808 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 645.0ms TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 17:11:17,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3912 states. [2021-06-05 17:11:17,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3912 to 3618. [2021-06-05 17:11:17,848 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) [2021-06-05 17:11:17,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 12121 transitions. [2021-06-05 17:11:17,853 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 12121 transitions. Word has length 39 [2021-06-05 17:11:17,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:17,853 INFO L482 AbstractCegarLoop]: Abstraction has 3618 states and 12121 transitions. [2021-06-05 17:11:17,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:17,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 12121 transitions. [2021-06-05 17:11:17,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:17,857 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:17,857 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:17,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-05 17:11:17,857 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:17,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:17,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1049023160, now seen corresponding path program 80 times [2021-06-05 17:11:17,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:17,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840445955] [2021-06-05 17:11:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:18,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:18,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840445955] [2021-06-05 17:11:18,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840445955] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:18,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:18,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:18,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691479161] [2021-06-05 17:11:18,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:18,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:18,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:18,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:18,056 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) [2021-06-05 17:11:19,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:19,137 INFO L93 Difference]: Finished difference Result 3967 states and 13152 transitions. [2021-06-05 17:11:19,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 17:11:19,138 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 [2021-06-05 17:11:19,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:19,144 INFO L225 Difference]: With dead ends: 3967 [2021-06-05 17:11:19,144 INFO L226 Difference]: Without dead ends: 3904 [2021-06-05 17:11:19,144 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 680.1ms TimeCoverageRelationStatistics Valid=208, Invalid=1954, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:11:19,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-06-05 17:11:19,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 3610. [2021-06-05 17:11:19,184 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) [2021-06-05 17:11:19,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12101 transitions. [2021-06-05 17:11:19,189 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12101 transitions. Word has length 39 [2021-06-05 17:11:19,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:19,189 INFO L482 AbstractCegarLoop]: Abstraction has 3610 states and 12101 transitions. [2021-06-05 17:11:19,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:19,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12101 transitions. [2021-06-05 17:11:19,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:19,193 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:19,193 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:19,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-05 17:11:19,193 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:19,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:19,193 INFO L82 PathProgramCache]: Analyzing trace with hash 913344568, now seen corresponding path program 81 times [2021-06-05 17:11:19,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:19,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771712905] [2021-06-05 17:11:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:19,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:19,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:19,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771712905] [2021-06-05 17:11:19,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771712905] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:19,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:19,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:19,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701160332] [2021-06-05 17:11:19,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:19,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:19,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:19,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:19,380 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) [2021-06-05 17:11:20,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:20,749 INFO L93 Difference]: Finished difference Result 4130 states and 13541 transitions. [2021-06-05 17:11:20,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 17:11:20,750 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:20,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:20,756 INFO L225 Difference]: With dead ends: 4130 [2021-06-05 17:11:20,756 INFO L226 Difference]: Without dead ends: 4087 [2021-06-05 17:11:20,757 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 907.2ms TimeCoverageRelationStatistics Valid=281, Invalid=2799, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:11:20,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4087 states. [2021-06-05 17:11:20,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4087 to 3618. [2021-06-05 17:11:20,799 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) [2021-06-05 17:11:20,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3618 states to 3618 states and 12121 transitions. [2021-06-05 17:11:20,804 INFO L78 Accepts]: Start accepts. Automaton has 3618 states and 12121 transitions. Word has length 39 [2021-06-05 17:11:20,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:20,804 INFO L482 AbstractCegarLoop]: Abstraction has 3618 states and 12121 transitions. [2021-06-05 17:11:20,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:20,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3618 states and 12121 transitions. [2021-06-05 17:11:20,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:20,808 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:20,808 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:20,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-05 17:11:20,808 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:20,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:20,808 INFO L82 PathProgramCache]: Analyzing trace with hash -867253734, now seen corresponding path program 82 times [2021-06-05 17:11:20,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:20,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825078508] [2021-06-05 17:11:20,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:20,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:20,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:20,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825078508] [2021-06-05 17:11:20,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825078508] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:20,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:20,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:20,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185111549] [2021-06-05 17:11:20,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:20,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:20,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:20,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:20,994 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) [2021-06-05 17:11:22,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:22,347 INFO L93 Difference]: Finished difference Result 4118 states and 13503 transitions. [2021-06-05 17:11:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 17:11:22,347 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:22,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:22,353 INFO L225 Difference]: With dead ends: 4118 [2021-06-05 17:11:22,353 INFO L226 Difference]: Without dead ends: 4066 [2021-06-05 17:11:22,353 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 892.6ms TimeCoverageRelationStatistics Valid=273, Invalid=2697, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 17:11:22,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4066 states. [2021-06-05 17:11:22,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4066 to 3610. [2021-06-05 17:11:22,393 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) [2021-06-05 17:11:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 12101 transitions. [2021-06-05 17:11:22,399 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 12101 transitions. Word has length 39 [2021-06-05 17:11:22,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:22,399 INFO L482 AbstractCegarLoop]: Abstraction has 3610 states and 12101 transitions. [2021-06-05 17:11:22,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:22,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 12101 transitions. [2021-06-05 17:11:22,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:22,402 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:22,402 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:22,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-05 17:11:22,403 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:22,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:22,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1831828138, now seen corresponding path program 83 times [2021-06-05 17:11:22,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:22,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996397606] [2021-06-05 17:11:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:22,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:22,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996397606] [2021-06-05 17:11:22,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996397606] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:22,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:22,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:22,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402875721] [2021-06-05 17:11:22,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:22,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:22,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:22,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:22,602 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) [2021-06-05 17:11:23,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:23,699 INFO L93 Difference]: Finished difference Result 4095 states and 13426 transitions. [2021-06-05 17:11:23,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 17:11:23,699 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:23,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:23,705 INFO L225 Difference]: With dead ends: 4095 [2021-06-05 17:11:23,705 INFO L226 Difference]: Without dead ends: 4040 [2021-06-05 17:11:23,706 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 708.7ms TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 17:11:23,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-06-05 17:11:23,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3612. [2021-06-05 17:11:23,746 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) [2021-06-05 17:11:23,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12104 transitions. [2021-06-05 17:11:23,752 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12104 transitions. Word has length 39 [2021-06-05 17:11:23,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:23,752 INFO L482 AbstractCegarLoop]: Abstraction has 3612 states and 12104 transitions. [2021-06-05 17:11:23,752 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) [2021-06-05 17:11:23,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12104 transitions. [2021-06-05 17:11:23,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:23,755 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:23,755 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:23,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-05 17:11:23,756 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:23,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:23,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1290486936, now seen corresponding path program 84 times [2021-06-05 17:11:23,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:23,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73119150] [2021-06-05 17:11:23,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:23,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:23,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73119150] [2021-06-05 17:11:23,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73119150] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:23,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:23,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:23,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065116670] [2021-06-05 17:11:23,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:23,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:23,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:23,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:23,939 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) [2021-06-05 17:11:24,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:24,960 INFO L93 Difference]: Finished difference Result 4030 states and 13274 transitions. [2021-06-05 17:11:24,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 17:11:24,960 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:24,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:24,966 INFO L225 Difference]: With dead ends: 4030 [2021-06-05 17:11:24,966 INFO L226 Difference]: Without dead ends: 3984 [2021-06-05 17:11:24,966 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 656.6ms TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 17:11:24,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-06-05 17:11:25,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3616. [2021-06-05 17:11:25,007 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) [2021-06-05 17:11:25,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 12112 transitions. [2021-06-05 17:11:25,013 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 12112 transitions. Word has length 39 [2021-06-05 17:11:25,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:25,013 INFO L482 AbstractCegarLoop]: Abstraction has 3616 states and 12112 transitions. [2021-06-05 17:11:25,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:25,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 12112 transitions. [2021-06-05 17:11:25,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:25,017 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:25,017 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:25,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-05 17:11:25,018 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:25,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:25,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1537953098, now seen corresponding path program 85 times [2021-06-05 17:11:25,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:25,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088837945] [2021-06-05 17:11:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:25,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:25,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:25,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088837945] [2021-06-05 17:11:25,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088837945] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:25,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:25,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:25,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219181503] [2021-06-05 17:11:25,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:25,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:25,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:25,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:25,226 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) [2021-06-05 17:11:26,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:26,280 INFO L93 Difference]: Finished difference Result 3990 states and 13185 transitions. [2021-06-05 17:11:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 17:11:26,281 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:26,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:26,287 INFO L225 Difference]: With dead ends: 3990 [2021-06-05 17:11:26,287 INFO L226 Difference]: Without dead ends: 3941 [2021-06-05 17:11:26,287 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 702.8ms TimeCoverageRelationStatistics Valid=204, Invalid=1866, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 17:11:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2021-06-05 17:11:26,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3606. [2021-06-05 17:11:26,349 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) [2021-06-05 17:11:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12091 transitions. [2021-06-05 17:11:26,354 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12091 transitions. Word has length 39 [2021-06-05 17:11:26,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:26,354 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 12091 transitions. [2021-06-05 17:11:26,354 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) [2021-06-05 17:11:26,355 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12091 transitions. [2021-06-05 17:11:26,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:26,359 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:26,359 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:26,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-05 17:11:26,359 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:26,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:26,360 INFO L82 PathProgramCache]: Analyzing trace with hash 922424, now seen corresponding path program 86 times [2021-06-05 17:11:26,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:26,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040332919] [2021-06-05 17:11:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:26,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:26,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040332919] [2021-06-05 17:11:26,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040332919] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:26,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:26,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:26,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012885231] [2021-06-05 17:11:26,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:26,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:26,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:26,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:26,547 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) [2021-06-05 17:11:27,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:27,525 INFO L93 Difference]: Finished difference Result 4037 states and 13379 transitions. [2021-06-05 17:11:27,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 17:11:27,525 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 [2021-06-05 17:11:27,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:27,531 INFO L225 Difference]: With dead ends: 4037 [2021-06-05 17:11:27,531 INFO L226 Difference]: Without dead ends: 3970 [2021-06-05 17:11:27,531 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 575.9ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 17:11:27,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2021-06-05 17:11:27,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3646. [2021-06-05 17:11:27,572 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) [2021-06-05 17:11:27,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12199 transitions. [2021-06-05 17:11:27,578 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12199 transitions. Word has length 39 [2021-06-05 17:11:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:27,578 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12199 transitions. [2021-06-05 17:11:27,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:27,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12199 transitions. [2021-06-05 17:11:27,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:27,582 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:27,582 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:27,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-05 17:11:27,582 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:27,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:27,582 INFO L82 PathProgramCache]: Analyzing trace with hash -129672424, now seen corresponding path program 87 times [2021-06-05 17:11:27,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:27,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755437895] [2021-06-05 17:11:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:27,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:27,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755437895] [2021-06-05 17:11:27,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755437895] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:27,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:27,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:27,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653767516] [2021-06-05 17:11:27,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:27,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:27,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:27,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:27,772 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) [2021-06-05 17:11:28,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:28,768 INFO L93 Difference]: Finished difference Result 4025 states and 13339 transitions. [2021-06-05 17:11:28,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 17:11:28,768 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:28,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:28,774 INFO L225 Difference]: With dead ends: 4025 [2021-06-05 17:11:28,774 INFO L226 Difference]: Without dead ends: 3962 [2021-06-05 17:11:28,774 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 597.1ms TimeCoverageRelationStatistics Valid=169, Invalid=1553, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 17:11:28,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2021-06-05 17:11:28,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3638. [2021-06-05 17:11:28,815 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) [2021-06-05 17:11:28,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12175 transitions. [2021-06-05 17:11:28,821 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12175 transitions. Word has length 39 [2021-06-05 17:11:28,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:28,821 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12175 transitions. [2021-06-05 17:11:28,821 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:28,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12175 transitions. [2021-06-05 17:11:28,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:28,825 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:28,825 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:28,825 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-05 17:11:28,825 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:28,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:28,825 INFO L82 PathProgramCache]: Analyzing trace with hash -659572872, now seen corresponding path program 88 times [2021-06-05 17:11:28,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:28,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771154344] [2021-06-05 17:11:28,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:29,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:29,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771154344] [2021-06-05 17:11:29,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771154344] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:29,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:29,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:29,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343010770] [2021-06-05 17:11:29,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:29,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:29,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:29,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:29,007 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) [2021-06-05 17:11:29,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:29,987 INFO L93 Difference]: Finished difference Result 4037 states and 13367 transitions. [2021-06-05 17:11:29,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 17:11:29,987 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:29,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:29,994 INFO L225 Difference]: With dead ends: 4037 [2021-06-05 17:11:29,994 INFO L226 Difference]: Without dead ends: 3914 [2021-06-05 17:11:29,994 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 569.2ms TimeCoverageRelationStatistics Valid=165, Invalid=1557, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 17:11:30,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2021-06-05 17:11:30,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3606. [2021-06-05 17:11:30,037 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) [2021-06-05 17:11:30,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12075 transitions. [2021-06-05 17:11:30,042 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12075 transitions. Word has length 39 [2021-06-05 17:11:30,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:30,042 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 12075 transitions. [2021-06-05 17:11:30,042 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) [2021-06-05 17:11:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12075 transitions. [2021-06-05 17:11:30,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:30,046 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:30,046 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:30,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-05 17:11:30,046 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:30,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:30,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1377984042, now seen corresponding path program 89 times [2021-06-05 17:11:30,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:30,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065419115] [2021-06-05 17:11:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:30,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:30,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065419115] [2021-06-05 17:11:30,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065419115] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:30,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:30,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:30,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400523277] [2021-06-05 17:11:30,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:30,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:30,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:30,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:30,246 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) [2021-06-05 17:11:31,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:31,862 INFO L93 Difference]: Finished difference Result 5612 states and 19007 transitions. [2021-06-05 17:11:31,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:11:31,863 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:31,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:31,872 INFO L225 Difference]: With dead ends: 5612 [2021-06-05 17:11:31,872 INFO L226 Difference]: Without dead ends: 5569 [2021-06-05 17:11:31,872 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 909.6ms TimeCoverageRelationStatistics Valid=279, Invalid=2801, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:11:31,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5569 states. [2021-06-05 17:11:31,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5569 to 3620. [2021-06-05 17:11:31,924 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) [2021-06-05 17:11:31,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 12116 transitions. [2021-06-05 17:11:31,930 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 12116 transitions. Word has length 39 [2021-06-05 17:11:31,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:31,930 INFO L482 AbstractCegarLoop]: Abstraction has 3620 states and 12116 transitions. [2021-06-05 17:11:31,930 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:31,930 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 12116 transitions. [2021-06-05 17:11:31,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:31,933 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:31,933 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:31,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-05 17:11:31,933 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:31,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:31,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1136384952, now seen corresponding path program 90 times [2021-06-05 17:11:31,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:31,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138599725] [2021-06-05 17:11:31,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:32,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:32,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138599725] [2021-06-05 17:11:32,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138599725] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:32,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:32,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:32,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19851172] [2021-06-05 17:11:32,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:32,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:32,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:32,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:32,120 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) [2021-06-05 17:11:34,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:34,077 INFO L93 Difference]: Finished difference Result 6473 states and 21937 transitions. [2021-06-05 17:11:34,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 17:11:34,077 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:34,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:34,087 INFO L225 Difference]: With dead ends: 6473 [2021-06-05 17:11:34,087 INFO L226 Difference]: Without dead ends: 6421 [2021-06-05 17:11:34,088 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 1058.2ms TimeCoverageRelationStatistics Valid=321, Invalid=3461, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 17:11:34,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6421 states. [2021-06-05 17:11:34,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6421 to 3606. [2021-06-05 17:11:34,142 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) [2021-06-05 17:11:34,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 12075 transitions. [2021-06-05 17:11:34,148 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 12075 transitions. Word has length 39 [2021-06-05 17:11:34,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:34,148 INFO L482 AbstractCegarLoop]: Abstraction has 3606 states and 12075 transitions. [2021-06-05 17:11:34,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:34,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 12075 transitions. [2021-06-05 17:11:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:34,152 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:34,152 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:34,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-05 17:11:34,152 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:34,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:34,152 INFO L82 PathProgramCache]: Analyzing trace with hash -459500472, now seen corresponding path program 91 times [2021-06-05 17:11:34,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:34,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246370236] [2021-06-05 17:11:34,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:34,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:34,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246370236] [2021-06-05 17:11:34,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246370236] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:34,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:34,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:34,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133022021] [2021-06-05 17:11:34,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:34,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:34,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:34,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:34,342 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) [2021-06-05 17:11:35,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:35,656 INFO L93 Difference]: Finished difference Result 5417 states and 18181 transitions. [2021-06-05 17:11:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 17:11:35,656 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:35,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:35,664 INFO L225 Difference]: With dead ends: 5417 [2021-06-05 17:11:35,664 INFO L226 Difference]: Without dead ends: 5362 [2021-06-05 17:11:35,664 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 694.0ms TimeCoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 17:11:35,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2021-06-05 17:11:35,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 3614. [2021-06-05 17:11:35,711 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) [2021-06-05 17:11:35,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 12099 transitions. [2021-06-05 17:11:35,716 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 12099 transitions. Word has length 39 [2021-06-05 17:11:35,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:35,716 INFO L482 AbstractCegarLoop]: Abstraction has 3614 states and 12099 transitions. [2021-06-05 17:11:35,716 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) [2021-06-05 17:11:35,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 12099 transitions. [2021-06-05 17:11:35,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:35,720 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:35,720 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:35,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-05 17:11:35,720 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:35,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:35,721 INFO L82 PathProgramCache]: Analyzing trace with hash 713151750, now seen corresponding path program 92 times [2021-06-05 17:11:35,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:35,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869504454] [2021-06-05 17:11:35,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:35,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:35,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869504454] [2021-06-05 17:11:35,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869504454] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:35,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:35,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:35,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080938545] [2021-06-05 17:11:35,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:35,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:35,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:35,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:35,905 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) [2021-06-05 17:11:37,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:37,451 INFO L93 Difference]: Finished difference Result 6278 states and 21115 transitions. [2021-06-05 17:11:37,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 17:11:37,451 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 [2021-06-05 17:11:37,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:37,462 INFO L225 Difference]: With dead ends: 6278 [2021-06-05 17:11:37,462 INFO L226 Difference]: Without dead ends: 6218 [2021-06-05 17:11:37,463 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 814.2ms TimeCoverageRelationStatistics Valid=249, Invalid=2507, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 17:11:37,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6218 states. [2021-06-05 17:11:37,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6218 to 3612. [2021-06-05 17:11:37,535 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) [2021-06-05 17:11:37,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12094 transitions. [2021-06-05 17:11:37,541 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12094 transitions. Word has length 39 [2021-06-05 17:11:37,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:37,541 INFO L482 AbstractCegarLoop]: Abstraction has 3612 states and 12094 transitions. [2021-06-05 17:11:37,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:37,541 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12094 transitions. [2021-06-05 17:11:37,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:37,545 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:37,545 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:37,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-05 17:11:37,545 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:37,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:37,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1164251852, now seen corresponding path program 93 times [2021-06-05 17:11:37,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:37,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991950339] [2021-06-05 17:11:37,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:37,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:37,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991950339] [2021-06-05 17:11:37,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991950339] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:37,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:37,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:37,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079087046] [2021-06-05 17:11:37,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:37,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:37,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:37,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:37,737 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) [2021-06-05 17:11:38,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:38,991 INFO L93 Difference]: Finished difference Result 5378 states and 18115 transitions. [2021-06-05 17:11:38,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:11:38,991 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 [2021-06-05 17:11:38,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:39,001 INFO L225 Difference]: With dead ends: 5378 [2021-06-05 17:11:39,001 INFO L226 Difference]: Without dead ends: 5287 [2021-06-05 17:11:39,001 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 661.6ms TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:11:39,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5287 states. [2021-06-05 17:11:39,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5287 to 3612. [2021-06-05 17:11:39,052 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) [2021-06-05 17:11:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 12088 transitions. [2021-06-05 17:11:39,057 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 12088 transitions. Word has length 39 [2021-06-05 17:11:39,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:39,057 INFO L482 AbstractCegarLoop]: Abstraction has 3612 states and 12088 transitions. [2021-06-05 17:11:39,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:39,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 12088 transitions. [2021-06-05 17:11:39,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:39,061 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:39,061 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:39,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-05 17:11:39,061 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:39,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:39,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1628233238, now seen corresponding path program 94 times [2021-06-05 17:11:39,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:39,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252381605] [2021-06-05 17:11:39,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:39,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:39,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252381605] [2021-06-05 17:11:39,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252381605] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:39,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:39,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:39,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056219821] [2021-06-05 17:11:39,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:39,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:39,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:39,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:39,256 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) [2021-06-05 17:11:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:40,774 INFO L93 Difference]: Finished difference Result 6191 states and 20917 transitions. [2021-06-05 17:11:40,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 17:11:40,774 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:40,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:40,783 INFO L225 Difference]: With dead ends: 6191 [2021-06-05 17:11:40,783 INFO L226 Difference]: Without dead ends: 6075 [2021-06-05 17:11:40,783 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 798.7ms TimeCoverageRelationStatistics Valid=228, Invalid=2322, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:11:40,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6075 states. [2021-06-05 17:11:40,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6075 to 3590. [2021-06-05 17:11:40,833 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) [2021-06-05 17:11:40,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 12037 transitions. [2021-06-05 17:11:40,838 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 12037 transitions. Word has length 39 [2021-06-05 17:11:40,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:40,839 INFO L482 AbstractCegarLoop]: Abstraction has 3590 states and 12037 transitions. [2021-06-05 17:11:40,839 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) [2021-06-05 17:11:40,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 12037 transitions. [2021-06-05 17:11:40,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:40,842 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:40,842 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:40,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-05 17:11:40,842 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:40,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:40,843 INFO L82 PathProgramCache]: Analyzing trace with hash -2037500794, now seen corresponding path program 95 times [2021-06-05 17:11:40,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:40,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051588415] [2021-06-05 17:11:40,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:41,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:41,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051588415] [2021-06-05 17:11:41,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051588415] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:41,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:41,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:41,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513926279] [2021-06-05 17:11:41,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:41,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:41,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:41,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:41,038 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) [2021-06-05 17:11:41,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:41,860 INFO L93 Difference]: Finished difference Result 3901 states and 12905 transitions. [2021-06-05 17:11:41,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 17:11:41,860 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:41,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:41,866 INFO L225 Difference]: With dead ends: 3901 [2021-06-05 17:11:41,867 INFO L226 Difference]: Without dead ends: 3834 [2021-06-05 17:11:41,867 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 546.9ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 17:11:41,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2021-06-05 17:11:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 3646. [2021-06-05 17:11:41,926 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) [2021-06-05 17:11:41,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12185 transitions. [2021-06-05 17:11:41,932 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12185 transitions. Word has length 39 [2021-06-05 17:11:41,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:41,932 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12185 transitions. [2021-06-05 17:11:41,932 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) [2021-06-05 17:11:41,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12185 transitions. [2021-06-05 17:11:41,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:41,936 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:41,936 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:41,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-05 17:11:41,936 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:41,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:41,936 INFO L82 PathProgramCache]: Analyzing trace with hash 2085323284, now seen corresponding path program 96 times [2021-06-05 17:11:41,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:41,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583684172] [2021-06-05 17:11:41,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:42,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:42,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583684172] [2021-06-05 17:11:42,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583684172] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:42,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:42,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:42,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804216873] [2021-06-05 17:11:42,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:42,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:42,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:42,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:42,123 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) [2021-06-05 17:11:42,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:42,954 INFO L93 Difference]: Finished difference Result 3889 states and 12865 transitions. [2021-06-05 17:11:42,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 17:11:42,955 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:42,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:42,960 INFO L225 Difference]: With dead ends: 3889 [2021-06-05 17:11:42,960 INFO L226 Difference]: Without dead ends: 3826 [2021-06-05 17:11:42,961 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 549.2ms TimeCoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 17:11:42,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3826 states. [2021-06-05 17:11:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3826 to 3638. [2021-06-05 17:11:42,999 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) [2021-06-05 17:11:43,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12161 transitions. [2021-06-05 17:11:43,005 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12161 transitions. Word has length 39 [2021-06-05 17:11:43,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:43,005 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12161 transitions. [2021-06-05 17:11:43,005 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) [2021-06-05 17:11:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12161 transitions. [2021-06-05 17:11:43,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:43,009 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:43,009 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:43,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-05 17:11:43,009 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:43,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:43,009 INFO L82 PathProgramCache]: Analyzing trace with hash 282489128, now seen corresponding path program 97 times [2021-06-05 17:11:43,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:43,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057240326] [2021-06-05 17:11:43,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:43,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:43,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:43,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057240326] [2021-06-05 17:11:43,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057240326] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:43,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:43,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:43,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635359489] [2021-06-05 17:11:43,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:43,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:43,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:43,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:43,201 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) [2021-06-05 17:11:44,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:44,026 INFO L93 Difference]: Finished difference Result 3889 states and 12857 transitions. [2021-06-05 17:11:44,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 17:11:44,026 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 [2021-06-05 17:11:44,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:44,032 INFO L225 Difference]: With dead ends: 3889 [2021-06-05 17:11:44,032 INFO L226 Difference]: Without dead ends: 3754 [2021-06-05 17:11:44,033 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 542.2ms TimeCoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 17:11:44,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2021-06-05 17:11:44,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3594. [2021-06-05 17:11:44,087 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) [2021-06-05 17:11:44,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 12045 transitions. [2021-06-05 17:11:44,092 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 12045 transitions. Word has length 39 [2021-06-05 17:11:44,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:44,092 INFO L482 AbstractCegarLoop]: Abstraction has 3594 states and 12045 transitions. [2021-06-05 17:11:44,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:44,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 12045 transitions. [2021-06-05 17:11:44,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:44,096 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:44,096 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:44,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-05 17:11:44,096 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:44,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:44,097 INFO L82 PathProgramCache]: Analyzing trace with hash 861908364, now seen corresponding path program 98 times [2021-06-05 17:11:44,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:44,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963122226] [2021-06-05 17:11:44,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:44,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:44,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963122226] [2021-06-05 17:11:44,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963122226] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:44,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:44,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:44,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135908083] [2021-06-05 17:11:44,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:44,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:44,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:44,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:44,330 INFO L87 Difference]: Start difference. First operand 3594 states and 12045 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:45,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:45,114 INFO L93 Difference]: Finished difference Result 3825 states and 12693 transitions. [2021-06-05 17:11:45,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 17:11:45,114 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:45,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:45,120 INFO L225 Difference]: With dead ends: 3825 [2021-06-05 17:11:45,120 INFO L226 Difference]: Without dead ends: 3758 [2021-06-05 17:11:45,120 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 554.8ms TimeCoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 17:11:45,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2021-06-05 17:11:45,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3650. [2021-06-05 17:11:45,158 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) [2021-06-05 17:11:45,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12193 transitions. [2021-06-05 17:11:45,164 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12193 transitions. Word has length 39 [2021-06-05 17:11:45,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:45,164 INFO L482 AbstractCegarLoop]: Abstraction has 3650 states and 12193 transitions. [2021-06-05 17:11:45,164 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) [2021-06-05 17:11:45,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12193 transitions. [2021-06-05 17:11:45,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:45,167 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:45,167 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:45,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-05 17:11:45,168 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:45,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:45,168 INFO L82 PathProgramCache]: Analyzing trace with hash 689765146, now seen corresponding path program 99 times [2021-06-05 17:11:45,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:45,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489757878] [2021-06-05 17:11:45,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:45,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:45,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489757878] [2021-06-05 17:11:45,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489757878] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:45,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:45,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:45,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087923445] [2021-06-05 17:11:45,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:45,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:45,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:45,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:45,353 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) [2021-06-05 17:11:46,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:46,138 INFO L93 Difference]: Finished difference Result 3813 states and 12653 transitions. [2021-06-05 17:11:46,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 17:11:46,138 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:46,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:46,144 INFO L225 Difference]: With dead ends: 3813 [2021-06-05 17:11:46,144 INFO L226 Difference]: Without dead ends: 3750 [2021-06-05 17:11:46,144 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 520.5ms TimeCoverageRelationStatistics Valid=143, Invalid=1339, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 17:11:46,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-06-05 17:11:46,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3642. [2021-06-05 17:11:46,205 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) [2021-06-05 17:11:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12169 transitions. [2021-06-05 17:11:46,210 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12169 transitions. Word has length 39 [2021-06-05 17:11:46,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:46,210 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12169 transitions. [2021-06-05 17:11:46,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:46,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12169 transitions. [2021-06-05 17:11:46,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:46,214 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:46,214 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:46,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-05 17:11:46,214 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:46,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:46,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1113069010, now seen corresponding path program 100 times [2021-06-05 17:11:46,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:46,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626686680] [2021-06-05 17:11:46,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:46,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:46,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626686680] [2021-06-05 17:11:46,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626686680] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:46,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:46,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:11:46,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139861628] [2021-06-05 17:11:46,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:11:46,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:46,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:11:46,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:11:46,400 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) [2021-06-05 17:11:47,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:47,166 INFO L93 Difference]: Finished difference Result 3813 states and 12645 transitions. [2021-06-05 17:11:47,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 17:11:47,166 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:47,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:47,172 INFO L225 Difference]: With dead ends: 3813 [2021-06-05 17:11:47,172 INFO L226 Difference]: Without dead ends: 3662 [2021-06-05 17:11:47,172 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 506.3ms TimeCoverageRelationStatistics Valid=142, Invalid=1340, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 17:11:47,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2021-06-05 17:11:47,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3582. [2021-06-05 17:11:47,215 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) [2021-06-05 17:11:47,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 12017 transitions. [2021-06-05 17:11:47,222 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 12017 transitions. Word has length 39 [2021-06-05 17:11:47,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:47,222 INFO L482 AbstractCegarLoop]: Abstraction has 3582 states and 12017 transitions. [2021-06-05 17:11:47,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:47,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 12017 transitions. [2021-06-05 17:11:47,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:47,226 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:47,226 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:47,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-05 17:11:47,226 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:47,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:47,226 INFO L82 PathProgramCache]: Analyzing trace with hash 318375130, now seen corresponding path program 101 times [2021-06-05 17:11:47,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:47,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988649423] [2021-06-05 17:11:47,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:47,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:47,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988649423] [2021-06-05 17:11:47,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988649423] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:47,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:47,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:11:47,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883584863] [2021-06-05 17:11:47,393 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:11:47,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:47,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:11:47,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:11:47,393 INFO L87 Difference]: Start difference. First operand 3582 states and 12017 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:48,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:48,689 INFO L93 Difference]: Finished difference Result 4325 states and 14372 transitions. [2021-06-05 17:11:48,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 17:11:48,690 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 [2021-06-05 17:11:48,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:48,696 INFO L225 Difference]: With dead ends: 4325 [2021-06-05 17:11:48,696 INFO L226 Difference]: Without dead ends: 4258 [2021-06-05 17:11:48,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 755.2ms TimeCoverageRelationStatistics Valid=243, Invalid=2207, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 17:11:48,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4258 states. [2021-06-05 17:11:48,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4258 to 3658. [2021-06-05 17:11:48,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.3500136724090783) internal successors, (12251), 3657 states have internal predecessors, (12251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:48,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12251 transitions. [2021-06-05 17:11:48,742 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12251 transitions. Word has length 39 [2021-06-05 17:11:48,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:48,742 INFO L482 AbstractCegarLoop]: Abstraction has 3658 states and 12251 transitions. [2021-06-05 17:11:48,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:48,742 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12251 transitions. [2021-06-05 17:11:48,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:48,746 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:48,746 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:48,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-05 17:11:48,746 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:48,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:48,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1401240840, now seen corresponding path program 102 times [2021-06-05 17:11:48,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:48,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903371004] [2021-06-05 17:11:48,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:48,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:48,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903371004] [2021-06-05 17:11:48,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903371004] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:48,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:48,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:11:48,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940829766] [2021-06-05 17:11:48,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:11:48,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:48,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:11:48,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:11:48,953 INFO L87 Difference]: Start difference. First operand 3658 states and 12251 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:50,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:50,565 INFO L93 Difference]: Finished difference Result 4462 states and 14729 transitions. [2021-06-05 17:11:50,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 17:11:50,565 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 [2021-06-05 17:11:50,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:50,572 INFO L225 Difference]: With dead ends: 4462 [2021-06-05 17:11:50,572 INFO L226 Difference]: Without dead ends: 4419 [2021-06-05 17:11:50,572 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 1028.8ms TimeCoverageRelationStatistics Valid=323, Invalid=3217, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 17:11:50,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2021-06-05 17:11:50,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 3664. [2021-06-05 17:11:50,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3663 states have (on average 3.3480753480753482) internal successors, (12264), 3663 states have internal predecessors, (12264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:50,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 12264 transitions. [2021-06-05 17:11:50,641 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 12264 transitions. Word has length 39 [2021-06-05 17:11:50,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:50,641 INFO L482 AbstractCegarLoop]: Abstraction has 3664 states and 12264 transitions. [2021-06-05 17:11:50,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:50,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 12264 transitions. [2021-06-05 17:11:50,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:50,644 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:50,644 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:50,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-05 17:11:50,645 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:50,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:50,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1113128154, now seen corresponding path program 103 times [2021-06-05 17:11:50,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:50,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377960385] [2021-06-05 17:11:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:50,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:50,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377960385] [2021-06-05 17:11:50,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377960385] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:50,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:50,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:11:50,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603768583] [2021-06-05 17:11:50,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:11:50,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:50,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:11:50,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:11:50,813 INFO L87 Difference]: Start difference. First operand 3664 states and 12264 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:52,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:52,354 INFO L93 Difference]: Finished difference Result 4393 states and 14549 transitions. [2021-06-05 17:11:52,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 17:11:52,360 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:52,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:52,367 INFO L225 Difference]: With dead ends: 4393 [2021-06-05 17:11:52,367 INFO L226 Difference]: Without dead ends: 4329 [2021-06-05 17:11:52,368 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 964.4ms TimeCoverageRelationStatistics Valid=305, Invalid=3001, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 17:11:52,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4329 states. [2021-06-05 17:11:52,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4329 to 3646. [2021-06-05 17:11:52,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.35281207133059) internal successors, (12221), 3645 states have internal predecessors, (12221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12221 transitions. [2021-06-05 17:11:52,415 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12221 transitions. Word has length 39 [2021-06-05 17:11:52,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:52,415 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12221 transitions. [2021-06-05 17:11:52,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:52,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12221 transitions. [2021-06-05 17:11:52,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:52,419 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:52,419 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:52,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-05 17:11:52,419 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:52,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:52,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1733562554, now seen corresponding path program 104 times [2021-06-05 17:11:52,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:52,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975216527] [2021-06-05 17:11:52,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:52,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:52,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975216527] [2021-06-05 17:11:52,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975216527] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:52,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:52,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:11:52,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523228084] [2021-06-05 17:11:52,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:11:52,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:52,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:11:52,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:11:52,592 INFO L87 Difference]: Start difference. First operand 3646 states and 12221 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:53,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:53,648 INFO L93 Difference]: Finished difference Result 4273 states and 14194 transitions. [2021-06-05 17:11:53,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 17:11:53,649 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:53,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:53,655 INFO L225 Difference]: With dead ends: 4273 [2021-06-05 17:11:53,655 INFO L226 Difference]: Without dead ends: 4206 [2021-06-05 17:11:53,655 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 638.5ms TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 17:11:53,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4206 states. [2021-06-05 17:11:53,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4206 to 3654. [2021-06-05 17:11:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3653 states have (on average 3.3498494388174103) internal successors, (12237), 3653 states have internal predecessors, (12237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:53,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 12237 transitions. [2021-06-05 17:11:53,703 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 12237 transitions. Word has length 39 [2021-06-05 17:11:53,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:53,703 INFO L482 AbstractCegarLoop]: Abstraction has 3654 states and 12237 transitions. [2021-06-05 17:11:53,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:53,703 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 12237 transitions. [2021-06-05 17:11:53,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:53,707 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:53,707 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:53,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-05 17:11:53,707 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:53,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:53,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1602967706, now seen corresponding path program 105 times [2021-06-05 17:11:53,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:53,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148114560] [2021-06-05 17:11:53,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:53,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:53,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:53,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148114560] [2021-06-05 17:11:53,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148114560] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:53,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:53,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:11:53,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943670939] [2021-06-05 17:11:53,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:11:53,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:53,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:11:53,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:11:53,888 INFO L87 Difference]: Start difference. First operand 3654 states and 12237 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:54,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:54,997 INFO L93 Difference]: Finished difference Result 4261 states and 14154 transitions. [2021-06-05 17:11:54,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 17:11:54,997 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:54,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:55,004 INFO L225 Difference]: With dead ends: 4261 [2021-06-05 17:11:55,004 INFO L226 Difference]: Without dead ends: 4198 [2021-06-05 17:11:55,004 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 676.2ms TimeCoverageRelationStatistics Valid=217, Invalid=1945, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:11:55,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2021-06-05 17:11:55,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 3646. [2021-06-05 17:11:55,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3517146776406035) internal successors, (12217), 3645 states have internal predecessors, (12217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12217 transitions. [2021-06-05 17:11:55,071 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12217 transitions. Word has length 39 [2021-06-05 17:11:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:55,071 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12217 transitions. [2021-06-05 17:11:55,072 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:55,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12217 transitions. [2021-06-05 17:11:55,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:55,075 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:55,075 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:55,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-05 17:11:55,076 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:55,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:55,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1467289114, now seen corresponding path program 106 times [2021-06-05 17:11:55,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:55,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435415636] [2021-06-05 17:11:55,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:55,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:55,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435415636] [2021-06-05 17:11:55,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435415636] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:55,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:55,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:11:55,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621011938] [2021-06-05 17:11:55,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:11:55,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:55,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:11:55,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:11:55,254 INFO L87 Difference]: Start difference. First operand 3646 states and 12217 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:56,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:56,677 INFO L93 Difference]: Finished difference Result 4416 states and 14517 transitions. [2021-06-05 17:11:56,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:11:56,678 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:56,684 INFO L225 Difference]: With dead ends: 4416 [2021-06-05 17:11:56,684 INFO L226 Difference]: Without dead ends: 4373 [2021-06-05 17:11:56,685 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 916.6ms TimeCoverageRelationStatistics Valid=294, Invalid=2786, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:11:56,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4373 states. [2021-06-05 17:11:56,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4373 to 3654. [2021-06-05 17:11:56,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3653 states have (on average 3.3498494388174103) internal successors, (12237), 3653 states have internal predecessors, (12237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:56,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 12237 transitions. [2021-06-05 17:11:56,731 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 12237 transitions. Word has length 39 [2021-06-05 17:11:56,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:56,731 INFO L482 AbstractCegarLoop]: Abstraction has 3654 states and 12237 transitions. [2021-06-05 17:11:56,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:56,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 12237 transitions. [2021-06-05 17:11:56,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:56,735 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:56,735 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:56,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-05 17:11:56,735 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:56,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:56,736 INFO L82 PathProgramCache]: Analyzing trace with hash -313309188, now seen corresponding path program 107 times [2021-06-05 17:11:56,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:56,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296443888] [2021-06-05 17:11:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:56,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:56,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296443888] [2021-06-05 17:11:56,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296443888] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:56,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:56,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:11:56,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272916282] [2021-06-05 17:11:56,907 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:11:56,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:56,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:11:56,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:11:56,907 INFO L87 Difference]: Start difference. First operand 3654 states and 12237 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:58,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:58,312 INFO L93 Difference]: Finished difference Result 4404 states and 14479 transitions. [2021-06-05 17:11:58,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 17:11:58,312 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:58,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:58,319 INFO L225 Difference]: With dead ends: 4404 [2021-06-05 17:11:58,319 INFO L226 Difference]: Without dead ends: 4352 [2021-06-05 17:11:58,319 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 893.1ms TimeCoverageRelationStatistics Valid=286, Invalid=2684, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 17:11:58,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4352 states. [2021-06-05 17:11:58,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4352 to 3646. [2021-06-05 17:11:58,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3517146776406035) internal successors, (12217), 3645 states have internal predecessors, (12217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:58,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12217 transitions. [2021-06-05 17:11:58,367 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12217 transitions. Word has length 39 [2021-06-05 17:11:58,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:58,367 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12217 transitions. [2021-06-05 17:11:58,367 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:58,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12217 transitions. [2021-06-05 17:11:58,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:58,371 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:58,371 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:58,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-05 17:11:58,371 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:58,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:58,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1909194612, now seen corresponding path program 108 times [2021-06-05 17:11:58,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:58,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246243193] [2021-06-05 17:11:58,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:58,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:58,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:58,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246243193] [2021-06-05 17:11:58,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246243193] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:58,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:58,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:11:58,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459588703] [2021-06-05 17:11:58,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:11:58,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:58,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:11:58,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:11:58,541 INFO L87 Difference]: Start difference. First operand 3646 states and 12217 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:11:59,674 INFO L93 Difference]: Finished difference Result 4381 states and 14402 transitions. [2021-06-05 17:11:59,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 17:11:59,674 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:11:59,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:11:59,680 INFO L225 Difference]: With dead ends: 4381 [2021-06-05 17:11:59,680 INFO L226 Difference]: Without dead ends: 4326 [2021-06-05 17:11:59,680 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 708.8ms TimeCoverageRelationStatistics Valid=233, Invalid=2023, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 17:11:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2021-06-05 17:11:59,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 3648. [2021-06-05 17:11:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3647 states have (on average 3.3506992048258843) internal successors, (12220), 3647 states have internal predecessors, (12220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:59,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12220 transitions. [2021-06-05 17:11:59,726 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12220 transitions. Word has length 39 [2021-06-05 17:11:59,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:11:59,726 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 12220 transitions. [2021-06-05 17:11:59,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:11:59,726 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12220 transitions. [2021-06-05 17:11:59,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:11:59,730 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:11:59,730 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:11:59,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-05 17:11:59,730 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:11:59,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:11:59,731 INFO L82 PathProgramCache]: Analyzing trace with hash -736542390, now seen corresponding path program 109 times [2021-06-05 17:11:59,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:11:59,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584650294] [2021-06-05 17:11:59,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:11:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:11:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:11:59,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:11:59,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584650294] [2021-06-05 17:11:59,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584650294] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:11:59,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:11:59,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:11:59,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358729212] [2021-06-05 17:11:59,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:11:59,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:11:59,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:11:59,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:11:59,905 INFO L87 Difference]: Start difference. First operand 3648 states and 12220 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:00,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:00,935 INFO L93 Difference]: Finished difference Result 4316 states and 14250 transitions. [2021-06-05 17:12:00,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 17:12:00,936 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:00,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:00,942 INFO L225 Difference]: With dead ends: 4316 [2021-06-05 17:12:00,942 INFO L226 Difference]: Without dead ends: 4270 [2021-06-05 17:12:00,942 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 630.3ms TimeCoverageRelationStatistics Valid=208, Invalid=1772, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 17:12:00,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2021-06-05 17:12:00,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 3652. [2021-06-05 17:12:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 3651 states have (on average 3.3492193919474116) internal successors, (12228), 3651 states have internal predecessors, (12228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:00,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 12228 transitions. [2021-06-05 17:12:00,989 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 12228 transitions. Word has length 39 [2021-06-05 17:12:00,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:00,989 INFO L482 AbstractCegarLoop]: Abstraction has 3652 states and 12228 transitions. [2021-06-05 17:12:00,989 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:00,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 12228 transitions. [2021-06-05 17:12:00,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:00,993 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:00,993 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:00,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-05 17:12:00,993 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:00,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:00,993 INFO L82 PathProgramCache]: Analyzing trace with hash -984008552, now seen corresponding path program 110 times [2021-06-05 17:12:00,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:00,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099029749] [2021-06-05 17:12:00,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:01,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:01,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099029749] [2021-06-05 17:12:01,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099029749] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:01,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:01,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:01,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584307089] [2021-06-05 17:12:01,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:01,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:01,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:01,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:01,163 INFO L87 Difference]: Start difference. First operand 3652 states and 12228 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:02,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:02,564 INFO L93 Difference]: Finished difference Result 4387 states and 14459 transitions. [2021-06-05 17:12:02,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 17:12:02,564 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:02,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:02,570 INFO L225 Difference]: With dead ends: 4387 [2021-06-05 17:12:02,570 INFO L226 Difference]: Without dead ends: 4323 [2021-06-05 17:12:02,571 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 915.3ms TimeCoverageRelationStatistics Valid=284, Invalid=2578, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 17:12:02,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2021-06-05 17:12:02,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 3678. [2021-06-05 17:12:02,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3678 states, 3677 states have (on average 3.349197715528964) internal successors, (12315), 3677 states have internal predecessors, (12315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 12315 transitions. [2021-06-05 17:12:02,617 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 12315 transitions. Word has length 39 [2021-06-05 17:12:02,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:02,617 INFO L482 AbstractCegarLoop]: Abstraction has 3678 states and 12315 transitions. [2021-06-05 17:12:02,617 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) [2021-06-05 17:12:02,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 12315 transitions. [2021-06-05 17:12:02,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:02,621 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:02,621 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:02,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-05 17:12:02,621 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:02,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:02,621 INFO L82 PathProgramCache]: Analyzing trace with hash 554866970, now seen corresponding path program 111 times [2021-06-05 17:12:02,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:02,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119333087] [2021-06-05 17:12:02,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:02,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:02,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119333087] [2021-06-05 17:12:02,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119333087] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:02,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:02,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:02,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513117447] [2021-06-05 17:12:02,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:02,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:02,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:02,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:02,794 INFO L87 Difference]: Start difference. First operand 3678 states and 12315 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:03,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:03,832 INFO L93 Difference]: Finished difference Result 4269 states and 14200 transitions. [2021-06-05 17:12:03,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 17:12:03,832 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:03,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:03,839 INFO L225 Difference]: With dead ends: 4269 [2021-06-05 17:12:03,839 INFO L226 Difference]: Without dead ends: 4202 [2021-06-05 17:12:03,839 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 581.7ms TimeCoverageRelationStatistics Valid=177, Invalid=1545, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 17:12:03,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2021-06-05 17:12:03,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 3718. [2021-06-05 17:12:03,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3718 states, 3717 states have (on average 3.3422114608555287) internal successors, (12423), 3717 states have internal predecessors, (12423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:03,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3718 states to 3718 states and 12423 transitions. [2021-06-05 17:12:03,888 INFO L78 Accepts]: Start accepts. Automaton has 3718 states and 12423 transitions. Word has length 39 [2021-06-05 17:12:03,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:03,888 INFO L482 AbstractCegarLoop]: Abstraction has 3718 states and 12423 transitions. [2021-06-05 17:12:03,888 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) [2021-06-05 17:12:03,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3718 states and 12423 transitions. [2021-06-05 17:12:03,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:03,915 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:03,915 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:03,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-05 17:12:03,916 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:03,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:03,916 INFO L82 PathProgramCache]: Analyzing trace with hash 424272122, now seen corresponding path program 112 times [2021-06-05 17:12:03,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:03,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008381152] [2021-06-05 17:12:03,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:04,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:04,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008381152] [2021-06-05 17:12:04,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008381152] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:04,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:04,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:04,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664775964] [2021-06-05 17:12:04,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:04,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:04,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:04,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:04,083 INFO L87 Difference]: Start difference. First operand 3718 states and 12423 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:05,169 INFO L93 Difference]: Finished difference Result 4257 states and 14160 transitions. [2021-06-05 17:12:05,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 17:12:05,169 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:05,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:05,176 INFO L225 Difference]: With dead ends: 4257 [2021-06-05 17:12:05,176 INFO L226 Difference]: Without dead ends: 4194 [2021-06-05 17:12:05,176 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 607.5ms TimeCoverageRelationStatistics Valid=185, Invalid=1621, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 17:12:05,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4194 states. [2021-06-05 17:12:05,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4194 to 3710. [2021-06-05 17:12:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3710 states, 3709 states have (on average 3.3429495820976003) internal successors, (12399), 3709 states have internal predecessors, (12399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 12399 transitions. [2021-06-05 17:12:05,223 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 12399 transitions. Word has length 39 [2021-06-05 17:12:05,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:05,223 INFO L482 AbstractCegarLoop]: Abstraction has 3710 states and 12399 transitions. [2021-06-05 17:12:05,223 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 12399 transitions. [2021-06-05 17:12:05,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:05,227 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:05,227 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:05,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-05 17:12:05,227 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:05,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:05,227 INFO L82 PathProgramCache]: Analyzing trace with hash -105628326, now seen corresponding path program 113 times [2021-06-05 17:12:05,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:05,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170919944] [2021-06-05 17:12:05,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:05,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:05,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:05,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170919944] [2021-06-05 17:12:05,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170919944] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:05,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:05,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:05,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520849368] [2021-06-05 17:12:05,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:05,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:05,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:05,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:05,409 INFO L87 Difference]: Start difference. First operand 3710 states and 12399 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:06,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:06,477 INFO L93 Difference]: Finished difference Result 4269 states and 14184 transitions. [2021-06-05 17:12:06,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 17:12:06,477 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:06,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:06,483 INFO L225 Difference]: With dead ends: 4269 [2021-06-05 17:12:06,484 INFO L226 Difference]: Without dead ends: 4130 [2021-06-05 17:12:06,484 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 617.8ms TimeCoverageRelationStatistics Valid=191, Invalid=1701, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 17:12:06,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2021-06-05 17:12:06,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 3662. [2021-06-05 17:12:06,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3661 states have (on average 3.347446052990986) internal successors, (12255), 3661 states have internal predecessors, (12255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:06,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12255 transitions. [2021-06-05 17:12:06,529 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12255 transitions. Word has length 39 [2021-06-05 17:12:06,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:06,529 INFO L482 AbstractCegarLoop]: Abstraction has 3662 states and 12255 transitions. [2021-06-05 17:12:06,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:06,529 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12255 transitions. [2021-06-05 17:12:06,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:06,532 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:06,532 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:06,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-05 17:12:06,533 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:06,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:06,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1578866516, now seen corresponding path program 114 times [2021-06-05 17:12:06,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:06,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557564088] [2021-06-05 17:12:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:06,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:06,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557564088] [2021-06-05 17:12:06,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557564088] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:06,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:06,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 17:12:06,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428387170] [2021-06-05 17:12:06,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:12:06,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:06,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:12:06,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:12:06,685 INFO L87 Difference]: Start difference. First operand 3662 states and 12255 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:07,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:07,752 INFO L93 Difference]: Finished difference Result 4173 states and 13890 transitions. [2021-06-05 17:12:07,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 17:12:07,753 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 [2021-06-05 17:12:07,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:07,759 INFO L225 Difference]: With dead ends: 4173 [2021-06-05 17:12:07,759 INFO L226 Difference]: Without dead ends: 4094 [2021-06-05 17:12:07,760 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 665.0ms TimeCoverageRelationStatistics Valid=209, Invalid=1771, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 17:12:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4094 states. [2021-06-05 17:12:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 3686. [2021-06-05 17:12:07,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 3685 states have (on average 3.343012211668928) internal successors, (12319), 3685 states have internal predecessors, (12319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 12319 transitions. [2021-06-05 17:12:07,810 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 12319 transitions. Word has length 39 [2021-06-05 17:12:07,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:07,811 INFO L482 AbstractCegarLoop]: Abstraction has 3686 states and 12319 transitions. [2021-06-05 17:12:07,811 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) [2021-06-05 17:12:07,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 12319 transitions. [2021-06-05 17:12:07,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:07,815 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:07,815 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:07,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-05 17:12:07,816 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:07,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:07,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1192929108, now seen corresponding path program 115 times [2021-06-05 17:12:07,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:07,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102159589] [2021-06-05 17:12:07,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:07,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:07,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102159589] [2021-06-05 17:12:07,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102159589] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:07,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:07,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 17:12:07,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819146142] [2021-06-05 17:12:07,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:12:07,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:07,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:12:07,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:12:07,969 INFO L87 Difference]: Start difference. First operand 3686 states and 12319 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:09,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:09,382 INFO L93 Difference]: Finished difference Result 4225 states and 14028 transitions. [2021-06-05 17:12:09,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 17:12:09,382 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 [2021-06-05 17:12:09,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:09,389 INFO L225 Difference]: With dead ends: 4225 [2021-06-05 17:12:09,389 INFO L226 Difference]: Without dead ends: 4095 [2021-06-05 17:12:09,389 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 884.2ms TimeCoverageRelationStatistics Valid=264, Invalid=2492, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 17:12:09,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4095 states. [2021-06-05 17:12:09,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4095 to 3662. [2021-06-05 17:12:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3661 states have (on average 3.345260857689156) internal successors, (12247), 3661 states have internal predecessors, (12247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:09,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12247 transitions. [2021-06-05 17:12:09,438 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12247 transitions. Word has length 39 [2021-06-05 17:12:09,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:09,438 INFO L482 AbstractCegarLoop]: Abstraction has 3662 states and 12247 transitions. [2021-06-05 17:12:09,438 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) [2021-06-05 17:12:09,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12247 transitions. [2021-06-05 17:12:09,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:09,442 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:09,442 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:09,442 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-05 17:12:09,442 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:09,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:09,442 INFO L82 PathProgramCache]: Analyzing trace with hash 645022744, now seen corresponding path program 116 times [2021-06-05 17:12:09,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:09,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007044054] [2021-06-05 17:12:09,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:09,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:09,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007044054] [2021-06-05 17:12:09,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007044054] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:09,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:09,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:09,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691613894] [2021-06-05 17:12:09,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:09,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:09,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:09,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:09,613 INFO L87 Difference]: Start difference. First operand 3662 states and 12247 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:10,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:10,879 INFO L93 Difference]: Finished difference Result 4187 states and 13913 transitions. [2021-06-05 17:12:10,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 17:12:10,879 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 [2021-06-05 17:12:10,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:10,885 INFO L225 Difference]: With dead ends: 4187 [2021-06-05 17:12:10,885 INFO L226 Difference]: Without dead ends: 4120 [2021-06-05 17:12:10,885 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 798.3ms TimeCoverageRelationStatistics Valid=261, Invalid=2391, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 17:12:10,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4120 states. [2021-06-05 17:12:10,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4120 to 3662. [2021-06-05 17:12:10,925 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) [2021-06-05 17:12:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12235 transitions. [2021-06-05 17:12:10,930 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12235 transitions. Word has length 39 [2021-06-05 17:12:10,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:10,930 INFO L482 AbstractCegarLoop]: Abstraction has 3662 states and 12235 transitions. [2021-06-05 17:12:10,930 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:10,930 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12235 transitions. [2021-06-05 17:12:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:10,933 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:10,934 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:10,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-05 17:12:10,934 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:10,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:10,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1074593226, now seen corresponding path program 117 times [2021-06-05 17:12:10,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:10,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51763113] [2021-06-05 17:12:10,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:11,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:11,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:11,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51763113] [2021-06-05 17:12:11,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51763113] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:11,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:11,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:11,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767342739] [2021-06-05 17:12:11,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:11,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:11,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:11,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:11,108 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) [2021-06-05 17:12:12,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:12,739 INFO L93 Difference]: Finished difference Result 4276 states and 14159 transitions. [2021-06-05 17:12:12,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 17:12:12,740 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:12,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:12,746 INFO L225 Difference]: With dead ends: 4276 [2021-06-05 17:12:12,746 INFO L226 Difference]: Without dead ends: 4215 [2021-06-05 17:12:12,746 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 1078.1ms TimeCoverageRelationStatistics Valid=352, Invalid=3554, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 17:12:12,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2021-06-05 17:12:12,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 3650. [2021-06-05 17:12:12,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.344751986845711) internal successors, (12205), 3649 states have internal predecessors, (12205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:12,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12205 transitions. [2021-06-05 17:12:12,793 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12205 transitions. Word has length 39 [2021-06-05 17:12:12,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:12,793 INFO L482 AbstractCegarLoop]: Abstraction has 3650 states and 12205 transitions. [2021-06-05 17:12:12,793 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) [2021-06-05 17:12:12,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12205 transitions. [2021-06-05 17:12:12,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:12,797 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:12,797 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:12,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-05 17:12:12,797 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:12,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:12,797 INFO L82 PathProgramCache]: Analyzing trace with hash 2060210168, now seen corresponding path program 118 times [2021-06-05 17:12:12,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:12,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295553260] [2021-06-05 17:12:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:12,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:12,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:12,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295553260] [2021-06-05 17:12:12,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295553260] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:12,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:12,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:12,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088435463] [2021-06-05 17:12:12,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:12,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:12,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:12,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:12,989 INFO L87 Difference]: Start difference. First operand 3650 states and 12205 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:14,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:14,033 INFO L93 Difference]: Finished difference Result 4073 states and 13548 transitions. [2021-06-05 17:12:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 17:12:14,034 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:14,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:14,040 INFO L225 Difference]: With dead ends: 4073 [2021-06-05 17:12:14,040 INFO L226 Difference]: Without dead ends: 4006 [2021-06-05 17:12:14,041 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 686.8ms TimeCoverageRelationStatistics Valid=213, Invalid=1857, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 17:12:14,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4006 states. [2021-06-05 17:12:14,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4006 to 3658. [2021-06-05 17:12:14,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3657 states have (on average 3.3418102269619907) internal successors, (12221), 3657 states have internal predecessors, (12221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12221 transitions. [2021-06-05 17:12:14,089 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12221 transitions. Word has length 39 [2021-06-05 17:12:14,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:14,090 INFO L482 AbstractCegarLoop]: Abstraction has 3658 states and 12221 transitions. [2021-06-05 17:12:14,090 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:14,090 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12221 transitions. [2021-06-05 17:12:14,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:14,094 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:14,094 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:14,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-05 17:12:14,094 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:14,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:14,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1929615320, now seen corresponding path program 119 times [2021-06-05 17:12:14,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:14,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114465219] [2021-06-05 17:12:14,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:14,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:14,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:14,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114465219] [2021-06-05 17:12:14,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114465219] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:14,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:14,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:14,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479623319] [2021-06-05 17:12:14,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:14,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:14,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:14,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:14,269 INFO L87 Difference]: Start difference. First operand 3658 states and 12221 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:15,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:15,351 INFO L93 Difference]: Finished difference Result 4061 states and 13508 transitions. [2021-06-05 17:12:15,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 17:12:15,351 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:15,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:15,357 INFO L225 Difference]: With dead ends: 4061 [2021-06-05 17:12:15,357 INFO L226 Difference]: Without dead ends: 3998 [2021-06-05 17:12:15,357 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 695.2ms TimeCoverageRelationStatistics Valid=219, Invalid=1943, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:12:15,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2021-06-05 17:12:15,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3650. [2021-06-05 17:12:15,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3649 states have (on average 3.3436557961085227) internal successors, (12201), 3649 states have internal predecessors, (12201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:15,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12201 transitions. [2021-06-05 17:12:15,401 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12201 transitions. Word has length 39 [2021-06-05 17:12:15,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:15,401 INFO L482 AbstractCegarLoop]: Abstraction has 3650 states and 12201 transitions. [2021-06-05 17:12:15,401 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:15,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12201 transitions. [2021-06-05 17:12:15,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:15,405 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:15,405 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:15,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-05 17:12:15,405 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:15,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:15,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1793936728, now seen corresponding path program 120 times [2021-06-05 17:12:15,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:15,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984718315] [2021-06-05 17:12:15,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:15,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:15,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984718315] [2021-06-05 17:12:15,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984718315] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:15,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:15,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:15,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008911462] [2021-06-05 17:12:15,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:15,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:15,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:15,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:15,573 INFO L87 Difference]: Start difference. First operand 3650 states and 12201 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:16,983 INFO L93 Difference]: Finished difference Result 4168 states and 13766 transitions. [2021-06-05 17:12:16,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:12:16,984 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:16,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:16,990 INFO L225 Difference]: With dead ends: 4168 [2021-06-05 17:12:16,990 INFO L226 Difference]: Without dead ends: 4119 [2021-06-05 17:12:16,990 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 939.6ms TimeCoverageRelationStatistics Valid=305, Invalid=2887, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 17:12:17,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2021-06-05 17:12:17,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 3644. [2021-06-05 17:12:17,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 3643 states have (on average 3.3450452923414766) internal successors, (12186), 3643 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:17,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 12186 transitions. [2021-06-05 17:12:17,036 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 12186 transitions. Word has length 39 [2021-06-05 17:12:17,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:17,036 INFO L482 AbstractCegarLoop]: Abstraction has 3644 states and 12186 transitions. [2021-06-05 17:12:17,036 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 12186 transitions. [2021-06-05 17:12:17,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:17,040 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:17,040 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:17,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-05 17:12:17,040 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:17,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:17,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1582546998, now seen corresponding path program 121 times [2021-06-05 17:12:17,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:17,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954020438] [2021-06-05 17:12:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:17,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:17,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:17,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954020438] [2021-06-05 17:12:17,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954020438] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:17,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:17,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:17,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272398323] [2021-06-05 17:12:17,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:17,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:17,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:17,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:17,206 INFO L87 Difference]: Start difference. First operand 3644 states and 12186 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:18,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:18,301 INFO L93 Difference]: Finished difference Result 4095 states and 13578 transitions. [2021-06-05 17:12:18,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:12:18,302 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:18,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:18,308 INFO L225 Difference]: With dead ends: 4095 [2021-06-05 17:12:18,308 INFO L226 Difference]: Without dead ends: 4040 [2021-06-05 17:12:18,308 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 698.5ms TimeCoverageRelationStatistics Valid=231, Invalid=2025, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 17:12:18,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-06-05 17:12:18,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3644. [2021-06-05 17:12:18,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 3643 states have (on average 3.34449629426297) internal successors, (12184), 3643 states have internal predecessors, (12184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:18,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 12184 transitions. [2021-06-05 17:12:18,357 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 12184 transitions. Word has length 39 [2021-06-05 17:12:18,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:18,357 INFO L482 AbstractCegarLoop]: Abstraction has 3644 states and 12184 transitions. [2021-06-05 17:12:18,357 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) [2021-06-05 17:12:18,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 12184 transitions. [2021-06-05 17:12:18,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:18,364 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:18,364 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:18,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-05 17:12:18,364 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:18,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:18,364 INFO L82 PathProgramCache]: Analyzing trace with hash -409894776, now seen corresponding path program 122 times [2021-06-05 17:12:18,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:18,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100358213] [2021-06-05 17:12:18,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:18,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:18,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100358213] [2021-06-05 17:12:18,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100358213] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:18,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:18,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:18,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608968424] [2021-06-05 17:12:18,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:18,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:18,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:18,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:18,562 INFO L87 Difference]: Start difference. First operand 3644 states and 12184 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:19,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:19,594 INFO L93 Difference]: Finished difference Result 4038 states and 13446 transitions. [2021-06-05 17:12:19,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 17:12:19,594 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 [2021-06-05 17:12:19,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:19,618 INFO L225 Difference]: With dead ends: 4038 [2021-06-05 17:12:19,618 INFO L226 Difference]: Without dead ends: 3982 [2021-06-05 17:12:19,619 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 697.4ms TimeCoverageRelationStatistics Valid=217, Invalid=1853, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 17:12:19,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2021-06-05 17:12:19,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 3634. [2021-06-05 17:12:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3633 states have (on average 3.3479218276906137) internal successors, (12163), 3633 states have internal predecessors, (12163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:19,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 12163 transitions. [2021-06-05 17:12:19,663 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 12163 transitions. Word has length 39 [2021-06-05 17:12:19,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:19,663 INFO L482 AbstractCegarLoop]: Abstraction has 3634 states and 12163 transitions. [2021-06-05 17:12:19,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:19,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 12163 transitions. [2021-06-05 17:12:19,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:19,667 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:19,667 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:19,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-05 17:12:19,667 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:19,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:19,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1832153546, now seen corresponding path program 123 times [2021-06-05 17:12:19,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:19,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840189769] [2021-06-05 17:12:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:19,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:19,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:19,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840189769] [2021-06-05 17:12:19,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840189769] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:19,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:19,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:19,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684480877] [2021-06-05 17:12:19,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:19,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:19,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:19,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:19,849 INFO L87 Difference]: Start difference. First operand 3634 states and 12163 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:21,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:21,464 INFO L93 Difference]: Finished difference Result 4309 states and 14202 transitions. [2021-06-05 17:12:21,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 17:12:21,464 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:21,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:21,471 INFO L225 Difference]: With dead ends: 4309 [2021-06-05 17:12:21,471 INFO L226 Difference]: Without dead ends: 4172 [2021-06-05 17:12:21,471 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 1033.4ms TimeCoverageRelationStatistics Valid=314, Invalid=3226, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 17:12:21,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2021-06-05 17:12:21,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 3638. [2021-06-05 17:12:21,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.346989276876547) internal successors, (12173), 3637 states have internal predecessors, (12173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:21,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12173 transitions. [2021-06-05 17:12:21,521 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12173 transitions. Word has length 39 [2021-06-05 17:12:21,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:21,521 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12173 transitions. [2021-06-05 17:12:21,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:21,521 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12173 transitions. [2021-06-05 17:12:21,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:21,525 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:21,525 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:21,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-06-05 17:12:21,525 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:21,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:21,525 INFO L82 PathProgramCache]: Analyzing trace with hash 337262646, now seen corresponding path program 124 times [2021-06-05 17:12:21,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:21,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706280034] [2021-06-05 17:12:21,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:21,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:21,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706280034] [2021-06-05 17:12:21,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706280034] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:21,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:21,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:21,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994408979] [2021-06-05 17:12:21,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:21,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:21,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:21,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:21,694 INFO L87 Difference]: Start difference. First operand 3638 states and 12173 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:23,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:23,162 INFO L93 Difference]: Finished difference Result 4287 states and 14068 transitions. [2021-06-05 17:12:23,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:12:23,162 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:23,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:23,169 INFO L225 Difference]: With dead ends: 4287 [2021-06-05 17:12:23,169 INFO L226 Difference]: Without dead ends: 4223 [2021-06-05 17:12:23,169 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 957.9ms TimeCoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 17:12:23,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4223 states. [2021-06-05 17:12:23,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 3638. [2021-06-05 17:12:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 3.346989276876547) internal successors, (12173), 3637 states have internal predecessors, (12173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:23,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12173 transitions. [2021-06-05 17:12:23,222 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12173 transitions. Word has length 39 [2021-06-05 17:12:23,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:23,223 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12173 transitions. [2021-06-05 17:12:23,223 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:23,223 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12173 transitions. [2021-06-05 17:12:23,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:23,227 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:23,227 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:23,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-06-05 17:12:23,227 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:23,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:23,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1255746216, now seen corresponding path program 125 times [2021-06-05 17:12:23,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:23,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252503637] [2021-06-05 17:12:23,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:23,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:23,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252503637] [2021-06-05 17:12:23,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252503637] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:23,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:23,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:23,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288505704] [2021-06-05 17:12:23,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:23,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:23,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:23,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:23,396 INFO L87 Difference]: Start difference. First operand 3638 states and 12173 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:24,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:24,512 INFO L93 Difference]: Finished difference Result 4192 states and 13816 transitions. [2021-06-05 17:12:24,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 17:12:24,512 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:24,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:24,519 INFO L225 Difference]: With dead ends: 4192 [2021-06-05 17:12:24,519 INFO L226 Difference]: Without dead ends: 4137 [2021-06-05 17:12:24,519 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 693.3ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 17:12:24,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2021-06-05 17:12:24,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 3640. [2021-06-05 17:12:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3639 states have (on average 3.3459741687276723) internal successors, (12176), 3639 states have internal predecessors, (12176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:24,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12176 transitions. [2021-06-05 17:12:24,568 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12176 transitions. Word has length 39 [2021-06-05 17:12:24,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:24,568 INFO L482 AbstractCegarLoop]: Abstraction has 3640 states and 12176 transitions. [2021-06-05 17:12:24,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:24,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12176 transitions. [2021-06-05 17:12:24,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:24,571 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:24,572 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:24,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-06-05 17:12:24,572 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:24,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:24,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1866568858, now seen corresponding path program 126 times [2021-06-05 17:12:24,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:24,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711355303] [2021-06-05 17:12:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:24,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:24,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711355303] [2021-06-05 17:12:24,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711355303] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:24,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:24,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:24,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365475572] [2021-06-05 17:12:24,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:24,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:24,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:24,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:24,741 INFO L87 Difference]: Start difference. First operand 3640 states and 12176 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:25,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:25,838 INFO L93 Difference]: Finished difference Result 4162 states and 13755 transitions. [2021-06-05 17:12:25,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:12:25,838 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:25,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:25,845 INFO L225 Difference]: With dead ends: 4162 [2021-06-05 17:12:25,845 INFO L226 Difference]: Without dead ends: 4102 [2021-06-05 17:12:25,845 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 708.9ms TimeCoverageRelationStatistics Valid=224, Invalid=2032, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 17:12:25,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2021-06-05 17:12:25,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 3638. [2021-06-05 17:12:25,886 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) [2021-06-05 17:12:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12171 transitions. [2021-06-05 17:12:25,891 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12171 transitions. Word has length 39 [2021-06-05 17:12:25,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:25,891 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12171 transitions. [2021-06-05 17:12:25,891 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:25,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12171 transitions. [2021-06-05 17:12:25,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:25,895 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:25,895 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:25,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-06-05 17:12:25,895 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:25,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:25,895 INFO L82 PathProgramCache]: Analyzing trace with hash 348831896, now seen corresponding path program 127 times [2021-06-05 17:12:25,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:25,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526869076] [2021-06-05 17:12:25,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:26,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:26,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:26,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526869076] [2021-06-05 17:12:26,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526869076] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:26,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:26,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 17:12:26,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273873369] [2021-06-05 17:12:26,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:12:26,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:26,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:12:26,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:12:26,053 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) [2021-06-05 17:12:27,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:27,044 INFO L93 Difference]: Finished difference Result 4073 states and 13542 transitions. [2021-06-05 17:12:27,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 17:12:27,045 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 [2021-06-05 17:12:27,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:27,051 INFO L225 Difference]: With dead ends: 4073 [2021-06-05 17:12:27,051 INFO L226 Difference]: Without dead ends: 3997 [2021-06-05 17:12:27,051 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 625.0ms TimeCoverageRelationStatistics Valid=199, Invalid=1693, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 17:12:27,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2021-06-05 17:12:27,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3646. [2021-06-05 17:12:27,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3645 states have (on average 3.3434842249657066) internal successors, (12187), 3645 states have internal predecessors, (12187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:27,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12187 transitions. [2021-06-05 17:12:27,098 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12187 transitions. Word has length 39 [2021-06-05 17:12:27,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:27,098 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12187 transitions. [2021-06-05 17:12:27,098 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) [2021-06-05 17:12:27,098 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12187 transitions. [2021-06-05 17:12:27,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:27,102 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:27,102 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:27,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-06-05 17:12:27,102 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:27,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:27,103 INFO L82 PathProgramCache]: Analyzing trace with hash -669221716, now seen corresponding path program 128 times [2021-06-05 17:12:27,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:27,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082492742] [2021-06-05 17:12:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:27,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:27,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082492742] [2021-06-05 17:12:27,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082492742] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:27,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:27,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:27,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312969615] [2021-06-05 17:12:27,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:27,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:27,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:27,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:27,285 INFO L87 Difference]: Start difference. First operand 3646 states and 12187 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:28,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:28,334 INFO L93 Difference]: Finished difference Result 4055 states and 13488 transitions. [2021-06-05 17:12:28,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 17:12:28,334 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:28,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:28,341 INFO L225 Difference]: With dead ends: 4055 [2021-06-05 17:12:28,341 INFO L226 Difference]: Without dead ends: 3977 [2021-06-05 17:12:28,341 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 683.3ms TimeCoverageRelationStatistics Valid=215, Invalid=1947, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:12:28,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2021-06-05 17:12:28,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3626. [2021-06-05 17:12:28,385 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) [2021-06-05 17:12:28,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 12139 transitions. [2021-06-05 17:12:28,391 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 12139 transitions. Word has length 39 [2021-06-05 17:12:28,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:28,391 INFO L482 AbstractCegarLoop]: Abstraction has 3626 states and 12139 transitions. [2021-06-05 17:12:28,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:28,392 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 12139 transitions. [2021-06-05 17:12:28,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:28,395 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:28,395 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:28,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-06-05 17:12:28,396 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:28,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:28,396 INFO L82 PathProgramCache]: Analyzing trace with hash -479556628, now seen corresponding path program 129 times [2021-06-05 17:12:28,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:28,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729539522] [2021-06-05 17:12:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:28,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:28,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729539522] [2021-06-05 17:12:28,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729539522] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:28,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:28,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:28,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079362239] [2021-06-05 17:12:28,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:28,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:28,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:28,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:28,587 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) [2021-06-05 17:12:30,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:30,118 INFO L93 Difference]: Finished difference Result 4276 states and 14125 transitions. [2021-06-05 17:12:30,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 17:12:30,119 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:30,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:30,125 INFO L225 Difference]: With dead ends: 4276 [2021-06-05 17:12:30,125 INFO L226 Difference]: Without dead ends: 4170 [2021-06-05 17:12:30,125 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 961.6ms TimeCoverageRelationStatistics Valid=284, Invalid=2908, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 17:12:30,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-06-05 17:12:30,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3642. [2021-06-05 17:12:30,167 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) [2021-06-05 17:12:30,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12185 transitions. [2021-06-05 17:12:30,172 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12185 transitions. Word has length 39 [2021-06-05 17:12:30,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:30,172 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12185 transitions. [2021-06-05 17:12:30,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:30,173 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12185 transitions. [2021-06-05 17:12:30,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:30,176 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:30,177 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:30,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-06-05 17:12:30,177 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:30,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:30,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1974447528, now seen corresponding path program 130 times [2021-06-05 17:12:30,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:30,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569635046] [2021-06-05 17:12:30,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:30,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:30,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569635046] [2021-06-05 17:12:30,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569635046] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:30,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:30,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:30,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950342750] [2021-06-05 17:12:30,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:30,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:30,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:30,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:30,367 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) [2021-06-05 17:12:31,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:31,733 INFO L93 Difference]: Finished difference Result 4285 states and 14055 transitions. [2021-06-05 17:12:31,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:12:31,733 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:31,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:31,740 INFO L225 Difference]: With dead ends: 4285 [2021-06-05 17:12:31,740 INFO L226 Difference]: Without dead ends: 4221 [2021-06-05 17:12:31,740 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 921.8ms TimeCoverageRelationStatistics Valid=283, Invalid=2797, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:12:31,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4221 states. [2021-06-05 17:12:31,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4221 to 3642. [2021-06-05 17:12:31,781 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) [2021-06-05 17:12:31,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12185 transitions. [2021-06-05 17:12:31,786 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12185 transitions. Word has length 39 [2021-06-05 17:12:31,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:31,786 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12185 transitions. [2021-06-05 17:12:31,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:31,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12185 transitions. [2021-06-05 17:12:31,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:31,789 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:31,790 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:31,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-06-05 17:12:31,790 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:31,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:31,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1055963958, now seen corresponding path program 131 times [2021-06-05 17:12:31,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:31,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075545715] [2021-06-05 17:12:31,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:31,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:31,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:31,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075545715] [2021-06-05 17:12:31,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075545715] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:31,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:31,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:31,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026889764] [2021-06-05 17:12:31,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:31,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:31,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:31,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:31,956 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) [2021-06-05 17:12:32,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:32,968 INFO L93 Difference]: Finished difference Result 4182 states and 13783 transitions. [2021-06-05 17:12:32,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 17:12:32,968 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:32,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:32,974 INFO L225 Difference]: With dead ends: 4182 [2021-06-05 17:12:32,974 INFO L226 Difference]: Without dead ends: 4139 [2021-06-05 17:12:32,975 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 627.8ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 17:12:32,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2021-06-05 17:12:33,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 3648. [2021-06-05 17:12:33,052 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) [2021-06-05 17:12:33,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12198 transitions. [2021-06-05 17:12:33,060 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12198 transitions. Word has length 39 [2021-06-05 17:12:33,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:33,060 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 12198 transitions. [2021-06-05 17:12:33,060 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) [2021-06-05 17:12:33,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12198 transitions. [2021-06-05 17:12:33,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:33,065 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:33,065 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:33,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-06-05 17:12:33,065 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:33,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:33,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1035815224, now seen corresponding path program 132 times [2021-06-05 17:12:33,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:33,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902091653] [2021-06-05 17:12:33,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:33,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:33,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:33,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902091653] [2021-06-05 17:12:33,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902091653] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:33,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:33,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:33,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590784439] [2021-06-05 17:12:33,273 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:33,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:33,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:33,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:33,273 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) [2021-06-05 17:12:34,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:34,411 INFO L93 Difference]: Finished difference Result 4151 states and 13720 transitions. [2021-06-05 17:12:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:12:34,411 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:34,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:34,417 INFO L225 Difference]: With dead ends: 4151 [2021-06-05 17:12:34,417 INFO L226 Difference]: Without dead ends: 4108 [2021-06-05 17:12:34,417 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 760.3ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 17:12:34,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-06-05 17:12:34,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3644. [2021-06-05 17:12:34,457 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) [2021-06-05 17:12:34,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 12188 transitions. [2021-06-05 17:12:34,462 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 12188 transitions. Word has length 39 [2021-06-05 17:12:34,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:34,462 INFO L482 AbstractCegarLoop]: Abstraction has 3644 states and 12188 transitions. [2021-06-05 17:12:34,463 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:34,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 12188 transitions. [2021-06-05 17:12:34,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:34,466 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:34,466 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:34,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-06-05 17:12:34,466 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:34,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:34,467 INFO L82 PathProgramCache]: Analyzing trace with hash 116688264, now seen corresponding path program 133 times [2021-06-05 17:12:34,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:34,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803242992] [2021-06-05 17:12:34,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:34,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:34,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803242992] [2021-06-05 17:12:34,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803242992] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:34,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:34,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:34,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500519726] [2021-06-05 17:12:34,634 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:34,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:34,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:34,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:34,634 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) [2021-06-05 17:12:35,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:35,726 INFO L93 Difference]: Finished difference Result 4160 states and 13742 transitions. [2021-06-05 17:12:35,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:12:35,726 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:35,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:35,732 INFO L225 Difference]: With dead ends: 4160 [2021-06-05 17:12:35,732 INFO L226 Difference]: Without dead ends: 4100 [2021-06-05 17:12:35,732 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 699.5ms TimeCoverageRelationStatistics Valid=213, Invalid=1949, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:12:35,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4100 states. [2021-06-05 17:12:35,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4100 to 3642. [2021-06-05 17:12:35,772 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) [2021-06-05 17:12:35,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12183 transitions. [2021-06-05 17:12:35,777 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12183 transitions. Word has length 39 [2021-06-05 17:12:35,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:35,777 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12183 transitions. [2021-06-05 17:12:35,778 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:35,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12183 transitions. [2021-06-05 17:12:35,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:35,781 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:35,781 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:35,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-06-05 17:12:35,781 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:35,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:35,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1962878278, now seen corresponding path program 134 times [2021-06-05 17:12:35,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:35,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481764681] [2021-06-05 17:12:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:35,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:35,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481764681] [2021-06-05 17:12:35,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481764681] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:35,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:35,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 17:12:35,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183927322] [2021-06-05 17:12:35,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:12:35,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:35,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:12:35,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:12:35,936 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) [2021-06-05 17:12:36,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:36,829 INFO L93 Difference]: Finished difference Result 4128 states and 13682 transitions. [2021-06-05 17:12:36,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 17:12:36,830 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 [2021-06-05 17:12:36,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:36,836 INFO L225 Difference]: With dead ends: 4128 [2021-06-05 17:12:36,836 INFO L226 Difference]: Without dead ends: 4052 [2021-06-05 17:12:36,836 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 553.9ms TimeCoverageRelationStatistics Valid=178, Invalid=1544, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 17:12:36,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2021-06-05 17:12:36,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 3650. [2021-06-05 17:12:36,879 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) [2021-06-05 17:12:36,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 12199 transitions. [2021-06-05 17:12:36,884 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 12199 transitions. Word has length 39 [2021-06-05 17:12:36,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:36,884 INFO L482 AbstractCegarLoop]: Abstraction has 3650 states and 12199 transitions. [2021-06-05 17:12:36,885 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) [2021-06-05 17:12:36,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 12199 transitions. [2021-06-05 17:12:36,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:36,888 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:36,888 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:36,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-06-05 17:12:36,888 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:36,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:36,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1314035406, now seen corresponding path program 135 times [2021-06-05 17:12:36,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:36,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027627754] [2021-06-05 17:12:36,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:37,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:37,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027627754] [2021-06-05 17:12:37,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027627754] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:37,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:37,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:37,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639751698] [2021-06-05 17:12:37,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:37,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:37,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:37,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:37,056 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) [2021-06-05 17:12:38,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:38,071 INFO L93 Difference]: Finished difference Result 4110 states and 13628 transitions. [2021-06-05 17:12:38,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 17:12:38,071 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:38,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:38,077 INFO L225 Difference]: With dead ends: 4110 [2021-06-05 17:12:38,077 INFO L226 Difference]: Without dead ends: 4040 [2021-06-05 17:12:38,077 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 635.0ms TimeCoverageRelationStatistics Valid=194, Invalid=1786, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 17:12:38,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-06-05 17:12:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 3638. [2021-06-05 17:12:38,117 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) [2021-06-05 17:12:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 12171 transitions. [2021-06-05 17:12:38,123 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 12171 transitions. Word has length 39 [2021-06-05 17:12:38,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:38,123 INFO L482 AbstractCegarLoop]: Abstraction has 3638 states and 12171 transitions. [2021-06-05 17:12:38,123 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:38,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 12171 transitions. [2021-06-05 17:12:38,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:38,127 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:38,127 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:38,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-06-05 17:12:38,128 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:38,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:38,128 INFO L82 PathProgramCache]: Analyzing trace with hash 634844074, now seen corresponding path program 136 times [2021-06-05 17:12:38,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:38,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524520065] [2021-06-05 17:12:38,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:38,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:38,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524520065] [2021-06-05 17:12:38,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524520065] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:38,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:38,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 17:12:38,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948830746] [2021-06-05 17:12:38,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:12:38,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:38,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:12:38,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:12:38,298 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) [2021-06-05 17:12:39,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:39,150 INFO L93 Difference]: Finished difference Result 4059 states and 13491 transitions. [2021-06-05 17:12:39,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 17:12:39,151 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 [2021-06-05 17:12:39,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:39,157 INFO L225 Difference]: With dead ends: 4059 [2021-06-05 17:12:39,157 INFO L226 Difference]: Without dead ends: 3983 [2021-06-05 17:12:39,157 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 540.2ms TimeCoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 17:12:39,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2021-06-05 17:12:39,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3670. [2021-06-05 17:12:39,197 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) [2021-06-05 17:12:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 12259 transitions. [2021-06-05 17:12:39,202 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 12259 transitions. Word has length 39 [2021-06-05 17:12:39,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:39,202 INFO L482 AbstractCegarLoop]: Abstraction has 3670 states and 12259 transitions. [2021-06-05 17:12:39,202 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) [2021-06-05 17:12:39,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 12259 transitions. [2021-06-05 17:12:39,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:39,206 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:39,206 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:39,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-06-05 17:12:39,206 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:39,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:39,206 INFO L82 PathProgramCache]: Analyzing trace with hash -383209538, now seen corresponding path program 137 times [2021-06-05 17:12:39,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:39,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621625326] [2021-06-05 17:12:39,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:39,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:39,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621625326] [2021-06-05 17:12:39,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621625326] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:39,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:39,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:39,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457925094] [2021-06-05 17:12:39,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:39,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:39,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:39,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:39,374 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) [2021-06-05 17:12:40,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:40,329 INFO L93 Difference]: Finished difference Result 4041 states and 13437 transitions. [2021-06-05 17:12:40,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 17:12:40,330 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:40,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:40,335 INFO L225 Difference]: With dead ends: 4041 [2021-06-05 17:12:40,336 INFO L226 Difference]: Without dead ends: 3975 [2021-06-05 17:12:40,336 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 607.9ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 17:12:40,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2021-06-05 17:12:40,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3662. [2021-06-05 17:12:40,375 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) [2021-06-05 17:12:40,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 12235 transitions. [2021-06-05 17:12:40,380 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 12235 transitions. Word has length 39 [2021-06-05 17:12:40,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:40,381 INFO L482 AbstractCegarLoop]: Abstraction has 3662 states and 12235 transitions. [2021-06-05 17:12:40,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:40,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 12235 transitions. [2021-06-05 17:12:40,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:40,384 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:40,384 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:40,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-06-05 17:12:40,384 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:40,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:40,385 INFO L82 PathProgramCache]: Analyzing trace with hash -665475192, now seen corresponding path program 138 times [2021-06-05 17:12:40,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:40,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307613750] [2021-06-05 17:12:40,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:40,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:40,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:40,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307613750] [2021-06-05 17:12:40,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307613750] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:40,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:40,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:12:40,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309234052] [2021-06-05 17:12:40,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:12:40,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:40,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:12:40,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:12:40,551 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) [2021-06-05 17:12:41,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:41,482 INFO L93 Difference]: Finished difference Result 4050 states and 13458 transitions. [2021-06-05 17:12:41,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 17:12:41,482 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 [2021-06-05 17:12:41,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:41,488 INFO L225 Difference]: With dead ends: 4050 [2021-06-05 17:12:41,488 INFO L226 Difference]: Without dead ends: 3888 [2021-06-05 17:12:41,489 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 590.8ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 17:12:41,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-06-05 17:12:41,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3594. [2021-06-05 17:12:41,527 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) [2021-06-05 17:12:41,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 12047 transitions. [2021-06-05 17:12:41,532 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 12047 transitions. Word has length 39 [2021-06-05 17:12:41,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:41,532 INFO L482 AbstractCegarLoop]: Abstraction has 3594 states and 12047 transitions. [2021-06-05 17:12:41,532 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:41,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 12047 transitions. [2021-06-05 17:12:41,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:41,536 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:41,536 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:41,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-06-05 17:12:41,536 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:41,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1293011068, now seen corresponding path program 139 times [2021-06-05 17:12:41,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:41,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784481713] [2021-06-05 17:12:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:41,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:41,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:41,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784481713] [2021-06-05 17:12:41,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784481713] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:41,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:41,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:12:41,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194165852] [2021-06-05 17:12:41,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:12:41,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:41,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:12:41,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:12:41,744 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) [2021-06-05 17:12:43,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:43,118 INFO L93 Difference]: Finished difference Result 4277 states and 14182 transitions. [2021-06-05 17:12:43,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 17:12:43,118 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:43,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:43,124 INFO L225 Difference]: With dead ends: 4277 [2021-06-05 17:12:43,124 INFO L226 Difference]: Without dead ends: 4210 [2021-06-05 17:12:43,125 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 872.1ms TimeCoverageRelationStatistics Valid=281, Invalid=2689, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 17:12:43,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2021-06-05 17:12:43,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 3652. [2021-06-05 17:12:43,165 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) [2021-06-05 17:12:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 12220 transitions. [2021-06-05 17:12:43,171 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 12220 transitions. Word has length 39 [2021-06-05 17:12:43,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:43,171 INFO L482 AbstractCegarLoop]: Abstraction has 3652 states and 12220 transitions. [2021-06-05 17:12:43,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:43,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 12220 transitions. [2021-06-05 17:12:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:43,174 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:43,174 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:43,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-06-05 17:12:43,175 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:43,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:43,175 INFO L82 PathProgramCache]: Analyzing trace with hash -426604902, now seen corresponding path program 140 times [2021-06-05 17:12:43,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:43,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989424568] [2021-06-05 17:12:43,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:43,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:43,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:43,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989424568] [2021-06-05 17:12:43,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989424568] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:43,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:43,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:12:43,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045982085] [2021-06-05 17:12:43,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:12:43,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:43,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:12:43,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:12:43,396 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) [2021-06-05 17:12:45,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:45,126 INFO L93 Difference]: Finished difference Result 4414 states and 14539 transitions. [2021-06-05 17:12:45,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 17:12:45,127 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:45,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:45,133 INFO L225 Difference]: With dead ends: 4414 [2021-06-05 17:12:45,134 INFO L226 Difference]: Without dead ends: 4371 [2021-06-05 17:12:45,134 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 1115.0ms TimeCoverageRelationStatistics Valid=351, Invalid=3681, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 17:12:45,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2021-06-05 17:12:45,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 3658. [2021-06-05 17:12:45,178 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) [2021-06-05 17:12:45,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 12233 transitions. [2021-06-05 17:12:45,184 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 12233 transitions. Word has length 39 [2021-06-05 17:12:45,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:45,184 INFO L482 AbstractCegarLoop]: Abstraction has 3658 states and 12233 transitions. [2021-06-05 17:12:45,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:45,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 12233 transitions. [2021-06-05 17:12:45,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:45,188 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:45,188 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:45,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-06-05 17:12:45,188 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:45,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:45,189 INFO L82 PathProgramCache]: Analyzing trace with hash 2087764092, now seen corresponding path program 141 times [2021-06-05 17:12:45,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:45,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941347296] [2021-06-05 17:12:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:45,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:45,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:45,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941347296] [2021-06-05 17:12:45,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941347296] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:45,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:45,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:12:45,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307084965] [2021-06-05 17:12:45,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:12:45,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:45,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:12:45,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:12:45,377 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) [2021-06-05 17:12:47,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:47,090 INFO L93 Difference]: Finished difference Result 4345 states and 14359 transitions. [2021-06-05 17:12:47,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 17:12:47,090 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:47,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:47,099 INFO L225 Difference]: With dead ends: 4345 [2021-06-05 17:12:47,099 INFO L226 Difference]: Without dead ends: 4281 [2021-06-05 17:12:47,100 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1076.5ms TimeCoverageRelationStatistics Valid=333, Invalid=3449, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 17:12:47,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2021-06-05 17:12:47,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 3640. [2021-06-05 17:12:47,154 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) [2021-06-05 17:12:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12190 transitions. [2021-06-05 17:12:47,160 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12190 transitions. Word has length 39 [2021-06-05 17:12:47,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:47,160 INFO L482 AbstractCegarLoop]: Abstraction has 3640 states and 12190 transitions. [2021-06-05 17:12:47,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:47,160 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12190 transitions. [2021-06-05 17:12:47,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:47,165 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:47,165 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:47,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-06-05 17:12:47,165 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:47,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:47,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1586768804, now seen corresponding path program 142 times [2021-06-05 17:12:47,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:47,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103012120] [2021-06-05 17:12:47,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:47,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:47,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103012120] [2021-06-05 17:12:47,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103012120] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:47,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:47,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:12:47,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851481013] [2021-06-05 17:12:47,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:12:47,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:47,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:12:47,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:12:47,366 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) [2021-06-05 17:12:48,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:48,616 INFO L93 Difference]: Finished difference Result 4245 states and 14072 transitions. [2021-06-05 17:12:48,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 17:12:48,616 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:48,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:48,624 INFO L225 Difference]: With dead ends: 4245 [2021-06-05 17:12:48,624 INFO L226 Difference]: Without dead ends: 4178 [2021-06-05 17:12:48,624 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 787.9ms TimeCoverageRelationStatistics Valid=247, Invalid=2303, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:12:48,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2021-06-05 17:12:48,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 3648. [2021-06-05 17:12:48,687 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) [2021-06-05 17:12:48,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12206 transitions. [2021-06-05 17:12:48,692 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12206 transitions. Word has length 39 [2021-06-05 17:12:48,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:48,692 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 12206 transitions. [2021-06-05 17:12:48,692 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12206 transitions. [2021-06-05 17:12:48,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:48,696 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:48,696 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:48,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-06-05 17:12:48,696 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:48,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:48,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1717363652, now seen corresponding path program 143 times [2021-06-05 17:12:48,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:48,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009157773] [2021-06-05 17:12:48,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:48,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:48,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009157773] [2021-06-05 17:12:48,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009157773] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:48,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:48,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:12:48,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554029777] [2021-06-05 17:12:48,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:12:48,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:48,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:12:48,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:12:48,883 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) [2021-06-05 17:12:50,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:50,095 INFO L93 Difference]: Finished difference Result 4233 states and 14032 transitions. [2021-06-05 17:12:50,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 17:12:50,095 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:50,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:50,101 INFO L225 Difference]: With dead ends: 4233 [2021-06-05 17:12:50,102 INFO L226 Difference]: Without dead ends: 4170 [2021-06-05 17:12:50,102 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 765.3ms TimeCoverageRelationStatistics Valid=254, Invalid=2398, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 17:12:50,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2021-06-05 17:12:50,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 3640. [2021-06-05 17:12:50,142 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) [2021-06-05 17:12:50,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12186 transitions. [2021-06-05 17:12:50,147 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12186 transitions. Word has length 39 [2021-06-05 17:12:50,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:50,147 INFO L482 AbstractCegarLoop]: Abstraction has 3640 states and 12186 transitions. [2021-06-05 17:12:50,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:50,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12186 transitions. [2021-06-05 17:12:50,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:50,151 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:50,151 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:50,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-06-05 17:12:50,151 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:50,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:50,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1853042244, now seen corresponding path program 144 times [2021-06-05 17:12:50,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:50,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558104504] [2021-06-05 17:12:50,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:50,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:50,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558104504] [2021-06-05 17:12:50,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558104504] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:50,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:50,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:12:50,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25098699] [2021-06-05 17:12:50,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:12:50,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:50,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:12:50,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:12:50,336 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) [2021-06-05 17:12:51,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:51,925 INFO L93 Difference]: Finished difference Result 4396 states and 14421 transitions. [2021-06-05 17:12:51,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 17:12:51,926 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 [2021-06-05 17:12:51,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:51,933 INFO L225 Difference]: With dead ends: 4396 [2021-06-05 17:12:51,933 INFO L226 Difference]: Without dead ends: 4353 [2021-06-05 17:12:51,933 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 1047.0ms TimeCoverageRelationStatistics Valid=333, Invalid=3449, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 17:12:51,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4353 states. [2021-06-05 17:12:51,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4353 to 3648. [2021-06-05 17:12:51,976 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) [2021-06-05 17:12:51,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 12206 transitions. [2021-06-05 17:12:51,982 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 12206 transitions. Word has length 39 [2021-06-05 17:12:51,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:51,982 INFO L482 AbstractCegarLoop]: Abstraction has 3648 states and 12206 transitions. [2021-06-05 17:12:51,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:51,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 12206 transitions. [2021-06-05 17:12:51,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:51,986 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:51,986 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:51,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-06-05 17:12:51,986 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:51,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:51,986 INFO L82 PathProgramCache]: Analyzing trace with hash 661326750, now seen corresponding path program 145 times [2021-06-05 17:12:51,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:51,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857164697] [2021-06-05 17:12:51,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:52,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:52,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857164697] [2021-06-05 17:12:52,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857164697] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:52,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:52,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:12:52,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288898947] [2021-06-05 17:12:52,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:12:52,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:52,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:12:52,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:12:52,200 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) [2021-06-05 17:12:53,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:53,748 INFO L93 Difference]: Finished difference Result 4384 states and 14383 transitions. [2021-06-05 17:12:53,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 17:12:53,748 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:53,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:53,755 INFO L225 Difference]: With dead ends: 4384 [2021-06-05 17:12:53,756 INFO L226 Difference]: Without dead ends: 4332 [2021-06-05 17:12:53,756 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 1045.4ms TimeCoverageRelationStatistics Valid=325, Invalid=3335, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 17:12:53,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2021-06-05 17:12:53,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 3640. [2021-06-05 17:12:53,808 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) [2021-06-05 17:12:53,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 12186 transitions. [2021-06-05 17:12:53,815 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 12186 transitions. Word has length 39 [2021-06-05 17:12:53,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:53,815 INFO L482 AbstractCegarLoop]: Abstraction has 3640 states and 12186 transitions. [2021-06-05 17:12:53,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:53,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 12186 transitions. [2021-06-05 17:12:53,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:53,820 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:53,820 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:53,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-06-05 17:12:53,820 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:53,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:53,821 INFO L82 PathProgramCache]: Analyzing trace with hash -934558674, now seen corresponding path program 146 times [2021-06-05 17:12:53,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:53,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830052924] [2021-06-05 17:12:53,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:54,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:54,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830052924] [2021-06-05 17:12:54,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830052924] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:54,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:54,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:12:54,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057537624] [2021-06-05 17:12:54,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:12:54,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:54,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:12:54,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:12:54,004 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) [2021-06-05 17:12:55,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:55,270 INFO L93 Difference]: Finished difference Result 4361 states and 14306 transitions. [2021-06-05 17:12:55,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 17:12:55,271 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:55,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:55,277 INFO L225 Difference]: With dead ends: 4361 [2021-06-05 17:12:55,277 INFO L226 Difference]: Without dead ends: 4306 [2021-06-05 17:12:55,278 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 806.6ms TimeCoverageRelationStatistics Valid=271, Invalid=2591, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 17:12:55,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2021-06-05 17:12:55,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 3642. [2021-06-05 17:12:55,320 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) [2021-06-05 17:12:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 12189 transitions. [2021-06-05 17:12:55,325 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 12189 transitions. Word has length 39 [2021-06-05 17:12:55,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:55,325 INFO L482 AbstractCegarLoop]: Abstraction has 3642 states and 12189 transitions. [2021-06-05 17:12:55,325 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) [2021-06-05 17:12:55,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 12189 transitions. [2021-06-05 17:12:55,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:55,329 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:55,329 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:55,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-06-05 17:12:55,329 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:55,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:55,329 INFO L82 PathProgramCache]: Analyzing trace with hash 238093548, now seen corresponding path program 147 times [2021-06-05 17:12:55,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:55,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435540683] [2021-06-05 17:12:55,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:55,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:55,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:55,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435540683] [2021-06-05 17:12:55,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435540683] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:55,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:55,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:12:55,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823141651] [2021-06-05 17:12:55,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:12:55,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:55,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:12:55,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:12:55,538 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) [2021-06-05 17:12:56,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:56,732 INFO L93 Difference]: Finished difference Result 4296 states and 14154 transitions. [2021-06-05 17:12:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 17:12:56,733 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 [2021-06-05 17:12:56,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:56,739 INFO L225 Difference]: With dead ends: 4296 [2021-06-05 17:12:56,739 INFO L226 Difference]: Without dead ends: 4250 [2021-06-05 17:12:56,739 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 771.9ms TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:12:56,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4250 states. [2021-06-05 17:12:56,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4250 to 3646. [2021-06-05 17:12:56,780 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) [2021-06-05 17:12:56,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 12197 transitions. [2021-06-05 17:12:56,785 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 12197 transitions. Word has length 39 [2021-06-05 17:12:56,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:56,785 INFO L482 AbstractCegarLoop]: Abstraction has 3646 states and 12197 transitions. [2021-06-05 17:12:56,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:56,785 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 12197 transitions. [2021-06-05 17:12:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:56,789 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:56,789 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:56,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-06-05 17:12:56,789 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:56,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:56,789 INFO L82 PathProgramCache]: Analyzing trace with hash -9372614, now seen corresponding path program 148 times [2021-06-05 17:12:56,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:56,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103762544] [2021-06-05 17:12:56,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:56,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:56,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103762544] [2021-06-05 17:12:56,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103762544] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:56,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:56,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:12:56,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842950626] [2021-06-05 17:12:56,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:12:56,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:56,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:12:56,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:12:56,973 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) [2021-06-05 17:12:58,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:58,226 INFO L93 Difference]: Finished difference Result 4256 states and 14065 transitions. [2021-06-05 17:12:58,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 17:12:58,227 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:58,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:58,233 INFO L225 Difference]: With dead ends: 4256 [2021-06-05 17:12:58,233 INFO L226 Difference]: Without dead ends: 4207 [2021-06-05 17:12:58,233 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 804.3ms TimeCoverageRelationStatistics Valid=250, Invalid=2300, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:12:58,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-06-05 17:12:58,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3636. [2021-06-05 17:12:58,275 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) [2021-06-05 17:12:58,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 12172 transitions. [2021-06-05 17:12:58,281 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 12172 transitions. Word has length 39 [2021-06-05 17:12:58,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:58,281 INFO L482 AbstractCegarLoop]: Abstraction has 3636 states and 12172 transitions. [2021-06-05 17:12:58,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:58,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 12172 transitions. [2021-06-05 17:12:58,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:58,285 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:58,285 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:58,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-06-05 17:12:58,285 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:58,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:58,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1529502908, now seen corresponding path program 149 times [2021-06-05 17:12:58,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:58,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574209460] [2021-06-05 17:12:58,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:58,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:58,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574209460] [2021-06-05 17:12:58,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574209460] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:58,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:58,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:12:58,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692071367] [2021-06-05 17:12:58,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:12:58,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:58,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:12:58,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:12:58,469 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) [2021-06-05 17:12:59,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:12:59,611 INFO L93 Difference]: Finished difference Result 4279 states and 14191 transitions. [2021-06-05 17:12:59,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 17:12:59,611 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:12:59,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:12:59,617 INFO L225 Difference]: With dead ends: 4279 [2021-06-05 17:12:59,617 INFO L226 Difference]: Without dead ends: 4212 [2021-06-05 17:12:59,618 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 665.9ms TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:12:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2021-06-05 17:12:59,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 3676. [2021-06-05 17:12:59,659 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) [2021-06-05 17:12:59,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12280 transitions. [2021-06-05 17:12:59,664 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12280 transitions. Word has length 39 [2021-06-05 17:12:59,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:12:59,664 INFO L482 AbstractCegarLoop]: Abstraction has 3676 states and 12280 transitions. [2021-06-05 17:12:59,664 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:12:59,664 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12280 transitions. [2021-06-05 17:12:59,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:12:59,668 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:12:59,668 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:12:59,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-06-05 17:12:59,668 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:12:59,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:12:59,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1398908060, now seen corresponding path program 150 times [2021-06-05 17:12:59,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:12:59,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021830566] [2021-06-05 17:12:59,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:12:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:12:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:12:59,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:12:59,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021830566] [2021-06-05 17:12:59,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021830566] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:12:59,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:12:59,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:12:59,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274627147] [2021-06-05 17:12:59,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:12:59,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:12:59,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:12:59,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:12:59,881 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) [2021-06-05 17:13:01,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:01,044 INFO L93 Difference]: Finished difference Result 4267 states and 14151 transitions. [2021-06-05 17:13:01,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 17:13:01,044 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:01,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:01,051 INFO L225 Difference]: With dead ends: 4267 [2021-06-05 17:13:01,051 INFO L226 Difference]: Without dead ends: 4204 [2021-06-05 17:13:01,051 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 700.0ms TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:13:01,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4204 states. [2021-06-05 17:13:01,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4204 to 3668. [2021-06-05 17:13:01,093 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) [2021-06-05 17:13:01,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12256 transitions. [2021-06-05 17:13:01,098 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12256 transitions. Word has length 39 [2021-06-05 17:13:01,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:01,098 INFO L482 AbstractCegarLoop]: Abstraction has 3668 states and 12256 transitions. [2021-06-05 17:13:01,098 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) [2021-06-05 17:13:01,098 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12256 transitions. [2021-06-05 17:13:01,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:01,102 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:01,102 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:01,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-06-05 17:13:01,102 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:01,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:01,102 INFO L82 PathProgramCache]: Analyzing trace with hash 869007612, now seen corresponding path program 151 times [2021-06-05 17:13:01,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:01,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481081451] [2021-06-05 17:13:01,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:01,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:01,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481081451] [2021-06-05 17:13:01,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481081451] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:01,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:01,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:13:01,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798327659] [2021-06-05 17:13:01,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:13:01,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:01,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:13:01,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:13:01,287 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) [2021-06-05 17:13:02,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:02,500 INFO L93 Difference]: Finished difference Result 4279 states and 14179 transitions. [2021-06-05 17:13:02,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 17:13:02,501 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:02,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:02,507 INFO L225 Difference]: With dead ends: 4279 [2021-06-05 17:13:02,507 INFO L226 Difference]: Without dead ends: 4140 [2021-06-05 17:13:02,507 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 722.7ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:13:02,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2021-06-05 17:13:02,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3616. [2021-06-05 17:13:02,547 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) [2021-06-05 17:13:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 12100 transitions. [2021-06-05 17:13:02,552 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 12100 transitions. Word has length 39 [2021-06-05 17:13:02,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:02,552 INFO L482 AbstractCegarLoop]: Abstraction has 3616 states and 12100 transitions. [2021-06-05 17:13:02,552 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) [2021-06-05 17:13:02,552 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 12100 transitions. [2021-06-05 17:13:02,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:02,556 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:02,556 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:02,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-06-05 17:13:02,556 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:02,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:02,556 INFO L82 PathProgramCache]: Analyzing trace with hash -508920310, now seen corresponding path program 152 times [2021-06-05 17:13:02,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:02,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456433149] [2021-06-05 17:13:02,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:02,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:02,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:02,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456433149] [2021-06-05 17:13:02,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456433149] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:02,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:02,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:13:02,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451896179] [2021-06-05 17:13:02,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:13:02,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:02,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:13:02,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:13:02,744 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) [2021-06-05 17:13:03,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:03,764 INFO L93 Difference]: Finished difference Result 4091 states and 13567 transitions. [2021-06-05 17:13:03,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 17:13:03,764 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:03,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:03,770 INFO L225 Difference]: With dead ends: 4091 [2021-06-05 17:13:03,770 INFO L226 Difference]: Without dead ends: 4024 [2021-06-05 17:13:03,770 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 657.6ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 17:13:03,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-06-05 17:13:03,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3668. [2021-06-05 17:13:03,810 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) [2021-06-05 17:13:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 12236 transitions. [2021-06-05 17:13:03,815 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 12236 transitions. Word has length 39 [2021-06-05 17:13:03,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:03,815 INFO L482 AbstractCegarLoop]: Abstraction has 3668 states and 12236 transitions. [2021-06-05 17:13:03,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:03,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 12236 transitions. [2021-06-05 17:13:03,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:03,819 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:03,819 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:03,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-06-05 17:13:03,819 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:03,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:03,819 INFO L82 PathProgramCache]: Analyzing trace with hash -681063528, now seen corresponding path program 153 times [2021-06-05 17:13:03,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:03,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748328331] [2021-06-05 17:13:03,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:04,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:04,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:04,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748328331] [2021-06-05 17:13:04,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748328331] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:04,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:04,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:13:04,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471781763] [2021-06-05 17:13:04,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:13:04,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:04,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:13:04,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:13:04,006 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) [2021-06-05 17:13:05,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:05,045 INFO L93 Difference]: Finished difference Result 4079 states and 13527 transitions. [2021-06-05 17:13:05,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 17:13:05,046 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 [2021-06-05 17:13:05,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:05,052 INFO L225 Difference]: With dead ends: 4079 [2021-06-05 17:13:05,052 INFO L226 Difference]: Without dead ends: 4016 [2021-06-05 17:13:05,052 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 656.5ms TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 17:13:05,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2021-06-05 17:13:05,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 3660. [2021-06-05 17:13:05,093 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) [2021-06-05 17:13:05,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 12212 transitions. [2021-06-05 17:13:05,098 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 12212 transitions. Word has length 39 [2021-06-05 17:13:05,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:05,098 INFO L482 AbstractCegarLoop]: Abstraction has 3660 states and 12212 transitions. [2021-06-05 17:13:05,098 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) [2021-06-05 17:13:05,098 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 12212 transitions. [2021-06-05 17:13:05,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:05,102 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:05,102 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:05,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-06-05 17:13:05,102 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:05,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:05,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1811069612, now seen corresponding path program 154 times [2021-06-05 17:13:05,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:05,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721467328] [2021-06-05 17:13:05,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:05,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:05,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721467328] [2021-06-05 17:13:05,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721467328] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:05,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:05,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:13:05,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943310274] [2021-06-05 17:13:05,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:13:05,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:05,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:13:05,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:13:05,282 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) [2021-06-05 17:13:06,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:06,295 INFO L93 Difference]: Finished difference Result 4079 states and 13519 transitions. [2021-06-05 17:13:06,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 17:13:06,295 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:06,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:06,301 INFO L225 Difference]: With dead ends: 4079 [2021-06-05 17:13:06,301 INFO L226 Difference]: Without dead ends: 3936 [2021-06-05 17:13:06,302 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 638.9ms TimeCoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 17:13:06,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2021-06-05 17:13:06,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3608. [2021-06-05 17:13:06,342 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) [2021-06-05 17:13:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3608 states to 3608 states and 12080 transitions. [2021-06-05 17:13:06,347 INFO L78 Accepts]: Start accepts. Automaton has 3608 states and 12080 transitions. Word has length 39 [2021-06-05 17:13:06,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:06,347 INFO L482 AbstractCegarLoop]: Abstraction has 3608 states and 12080 transitions. [2021-06-05 17:13:06,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:06,347 INFO L276 IsEmpty]: Start isEmpty. Operand 3608 states and 12080 transitions. [2021-06-05 17:13:06,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:06,351 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:06,351 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:06,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-06-05 17:13:06,351 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:06,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:06,351 INFO L82 PathProgramCache]: Analyzing trace with hash 439883512, now seen corresponding path program 155 times [2021-06-05 17:13:06,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:06,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860682694] [2021-06-05 17:13:06,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:06,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:06,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860682694] [2021-06-05 17:13:06,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860682694] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:06,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:06,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:06,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053380252] [2021-06-05 17:13:06,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:06,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:06,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:06,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:06,547 INFO L87 Difference]: Start difference. First operand 3608 states and 12080 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:07,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:07,803 INFO L93 Difference]: Finished difference Result 4203 states and 13971 transitions. [2021-06-05 17:13:07,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 17:13:07,804 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:07,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:07,810 INFO L225 Difference]: With dead ends: 4203 [2021-06-05 17:13:07,810 INFO L226 Difference]: Without dead ends: 4136 [2021-06-05 17:13:07,810 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 765.8ms TimeCoverageRelationStatistics Valid=251, Invalid=2299, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:13:07,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2021-06-05 17:13:07,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3696. [2021-06-05 17:13:07,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 3695 states have (on average 3.349120433017591) internal successors, (12375), 3695 states have internal predecessors, (12375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:07,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 12375 transitions. [2021-06-05 17:13:07,869 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 12375 transitions. Word has length 39 [2021-06-05 17:13:07,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:07,869 INFO L482 AbstractCegarLoop]: Abstraction has 3696 states and 12375 transitions. [2021-06-05 17:13:07,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:07,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 12375 transitions. [2021-06-05 17:13:07,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:07,873 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:07,873 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:07,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-06-05 17:13:07,873 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:07,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:07,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1279732458, now seen corresponding path program 156 times [2021-06-05 17:13:07,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:07,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214995123] [2021-06-05 17:13:07,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:08,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:08,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214995123] [2021-06-05 17:13:08,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214995123] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:08,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:08,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:08,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445100007] [2021-06-05 17:13:08,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:08,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:08,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:08,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:08,043 INFO L87 Difference]: Start difference. First operand 3696 states and 12375 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:09,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:09,710 INFO L93 Difference]: Finished difference Result 4340 states and 14328 transitions. [2021-06-05 17:13:09,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 17:13:09,710 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:09,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:09,716 INFO L225 Difference]: With dead ends: 4340 [2021-06-05 17:13:09,717 INFO L226 Difference]: Without dead ends: 4297 [2021-06-05 17:13:09,717 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 1064.3ms TimeCoverageRelationStatistics Valid=332, Invalid=3328, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 17:13:09,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2021-06-05 17:13:09,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 3702. [2021-06-05 17:13:09,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3702 states, 3701 states have (on average 3.347203458524723) internal successors, (12388), 3701 states have internal predecessors, (12388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:09,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3702 states to 3702 states and 12388 transitions. [2021-06-05 17:13:09,767 INFO L78 Accepts]: Start accepts. Automaton has 3702 states and 12388 transitions. Word has length 39 [2021-06-05 17:13:09,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:09,767 INFO L482 AbstractCegarLoop]: Abstraction has 3702 states and 12388 transitions. [2021-06-05 17:13:09,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:09,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3702 states and 12388 transitions. [2021-06-05 17:13:09,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:09,771 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:09,771 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:09,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-06-05 17:13:09,771 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:09,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:09,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1234636536, now seen corresponding path program 157 times [2021-06-05 17:13:09,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:09,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659830345] [2021-06-05 17:13:09,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:09,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:09,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659830345] [2021-06-05 17:13:09,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659830345] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:09,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:09,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:09,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753517565] [2021-06-05 17:13:09,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:09,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:09,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:09,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:09,940 INFO L87 Difference]: Start difference. First operand 3702 states and 12388 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:11,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:11,530 INFO L93 Difference]: Finished difference Result 4271 states and 14148 transitions. [2021-06-05 17:13:11,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 17:13:11,530 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:11,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:11,536 INFO L225 Difference]: With dead ends: 4271 [2021-06-05 17:13:11,536 INFO L226 Difference]: Without dead ends: 4207 [2021-06-05 17:13:11,536 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 1020.2ms TimeCoverageRelationStatistics Valid=314, Invalid=3108, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 17:13:11,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-06-05 17:13:11,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3684. [2021-06-05 17:13:11,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3684 states, 3683 states have (on average 3.3518870486016836) internal successors, (12345), 3683 states have internal predecessors, (12345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:11,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3684 states to 3684 states and 12345 transitions. [2021-06-05 17:13:11,581 INFO L78 Accepts]: Start accepts. Automaton has 3684 states and 12345 transitions. Word has length 39 [2021-06-05 17:13:11,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:11,581 INFO L482 AbstractCegarLoop]: Abstraction has 3684 states and 12345 transitions. [2021-06-05 17:13:11,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:11,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3684 states and 12345 transitions. [2021-06-05 17:13:11,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:11,585 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:11,585 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:11,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-06-05 17:13:11,585 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:11,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:11,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1855070936, now seen corresponding path program 158 times [2021-06-05 17:13:11,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:11,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762291134] [2021-06-05 17:13:11,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:11,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:11,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:11,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762291134] [2021-06-05 17:13:11,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762291134] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:11,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:11,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:11,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690608965] [2021-06-05 17:13:11,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:11,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:11,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:11,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:11,751 INFO L87 Difference]: Start difference. First operand 3684 states and 12345 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:12,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:12,806 INFO L93 Difference]: Finished difference Result 4183 states and 13899 transitions. [2021-06-05 17:13:12,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 17:13:12,807 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:12,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:12,813 INFO L225 Difference]: With dead ends: 4183 [2021-06-05 17:13:12,813 INFO L226 Difference]: Without dead ends: 4116 [2021-06-05 17:13:12,813 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 642.8ms TimeCoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 17:13:12,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2021-06-05 17:13:12,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 3712. [2021-06-05 17:13:12,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 3711 states have (on average 3.3481541363513876) internal successors, (12425), 3711 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:12,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 12425 transitions. [2021-06-05 17:13:12,859 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 12425 transitions. Word has length 39 [2021-06-05 17:13:12,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:12,859 INFO L482 AbstractCegarLoop]: Abstraction has 3712 states and 12425 transitions. [2021-06-05 17:13:12,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:12,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 12425 transitions. [2021-06-05 17:13:12,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:12,863 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:12,863 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:12,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-06-05 17:13:12,863 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:12,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:12,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1724476088, now seen corresponding path program 159 times [2021-06-05 17:13:12,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:12,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268234049] [2021-06-05 17:13:12,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:13,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:13,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268234049] [2021-06-05 17:13:13,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268234049] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:13,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:13,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:13,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629105519] [2021-06-05 17:13:13,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:13,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:13,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:13,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:13,035 INFO L87 Difference]: Start difference. First operand 3712 states and 12425 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:14,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:14,138 INFO L93 Difference]: Finished difference Result 4171 states and 13859 transitions. [2021-06-05 17:13:14,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:13:14,139 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:14,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:14,145 INFO L225 Difference]: With dead ends: 4171 [2021-06-05 17:13:14,145 INFO L226 Difference]: Without dead ends: 4108 [2021-06-05 17:13:14,145 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 692.0ms TimeCoverageRelationStatistics Valid=226, Invalid=2030, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 17:13:14,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-06-05 17:13:14,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 3704. [2021-06-05 17:13:14,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3703 states have (on average 3.3499864974345126) internal successors, (12405), 3703 states have internal predecessors, (12405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:14,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 12405 transitions. [2021-06-05 17:13:14,193 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 12405 transitions. Word has length 39 [2021-06-05 17:13:14,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:14,193 INFO L482 AbstractCegarLoop]: Abstraction has 3704 states and 12405 transitions. [2021-06-05 17:13:14,193 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:14,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 12405 transitions. [2021-06-05 17:13:14,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:14,196 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:14,197 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:14,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-06-05 17:13:14,197 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:14,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:14,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1588797496, now seen corresponding path program 160 times [2021-06-05 17:13:14,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:14,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987441848] [2021-06-05 17:13:14,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:14,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:14,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987441848] [2021-06-05 17:13:14,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987441848] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:14,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:14,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:14,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273700342] [2021-06-05 17:13:14,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:14,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:14,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:14,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:14,362 INFO L87 Difference]: Start difference. First operand 3704 states and 12405 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:15,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:15,849 INFO L93 Difference]: Finished difference Result 4334 states and 14248 transitions. [2021-06-05 17:13:15,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 17:13:15,850 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 [2021-06-05 17:13:15,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:15,856 INFO L225 Difference]: With dead ends: 4334 [2021-06-05 17:13:15,856 INFO L226 Difference]: Without dead ends: 4291 [2021-06-05 17:13:15,856 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 986.2ms TimeCoverageRelationStatistics Valid=323, Invalid=3099, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 17:13:15,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2021-06-05 17:13:15,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 3712. [2021-06-05 17:13:15,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 3711 states have (on average 3.3481541363513876) internal successors, (12425), 3711 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 12425 transitions. [2021-06-05 17:13:15,903 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 12425 transitions. Word has length 39 [2021-06-05 17:13:15,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:15,903 INFO L482 AbstractCegarLoop]: Abstraction has 3712 states and 12425 transitions. [2021-06-05 17:13:15,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:15,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 12425 transitions. [2021-06-05 17:13:15,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:15,907 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:15,907 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:15,907 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-06-05 17:13:15,907 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:15,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:15,907 INFO L82 PathProgramCache]: Analyzing trace with hash -191800806, now seen corresponding path program 161 times [2021-06-05 17:13:15,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:15,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129844125] [2021-06-05 17:13:15,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:16,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:16,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:16,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129844125] [2021-06-05 17:13:16,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129844125] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:16,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:16,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:16,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466668951] [2021-06-05 17:13:16,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:16,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:16,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:16,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:16,074 INFO L87 Difference]: Start difference. First operand 3712 states and 12425 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:17,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:17,538 INFO L93 Difference]: Finished difference Result 4322 states and 14210 transitions. [2021-06-05 17:13:17,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 17:13:17,539 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 [2021-06-05 17:13:17,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:17,545 INFO L225 Difference]: With dead ends: 4322 [2021-06-05 17:13:17,545 INFO L226 Difference]: Without dead ends: 4270 [2021-06-05 17:13:17,545 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 961.4ms TimeCoverageRelationStatistics Valid=315, Invalid=2991, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 17:13:17,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2021-06-05 17:13:17,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 3704. [2021-06-05 17:13:17,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3703 states have (on average 3.3499864974345126) internal successors, (12405), 3703 states have internal predecessors, (12405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:17,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 12405 transitions. [2021-06-05 17:13:17,615 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 12405 transitions. Word has length 39 [2021-06-05 17:13:17,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:17,615 INFO L482 AbstractCegarLoop]: Abstraction has 3704 states and 12405 transitions. [2021-06-05 17:13:17,615 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) [2021-06-05 17:13:17,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 12405 transitions. [2021-06-05 17:13:17,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:17,619 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:17,619 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:17,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-06-05 17:13:17,619 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:17,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:17,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1787686230, now seen corresponding path program 162 times [2021-06-05 17:13:17,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:17,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789560331] [2021-06-05 17:13:17,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:17,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:17,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789560331] [2021-06-05 17:13:17,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789560331] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:17,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:17,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:17,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367322668] [2021-06-05 17:13:17,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:17,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:17,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:17,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:17,812 INFO L87 Difference]: Start difference. First operand 3704 states and 12405 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:18,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:18,998 INFO L93 Difference]: Finished difference Result 4299 states and 14133 transitions. [2021-06-05 17:13:18,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 17:13:18,999 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:18,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:19,005 INFO L225 Difference]: With dead ends: 4299 [2021-06-05 17:13:19,005 INFO L226 Difference]: Without dead ends: 4244 [2021-06-05 17:13:19,005 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 776.5ms TimeCoverageRelationStatistics Valid=258, Invalid=2292, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:13:19,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2021-06-05 17:13:19,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 3706. [2021-06-05 17:13:19,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3705 states have (on average 3.3489878542510123) internal successors, (12408), 3705 states have internal predecessors, (12408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:19,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 12408 transitions. [2021-06-05 17:13:19,052 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 12408 transitions. Word has length 39 [2021-06-05 17:13:19,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:19,052 INFO L482 AbstractCegarLoop]: Abstraction has 3706 states and 12408 transitions. [2021-06-05 17:13:19,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:19,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 12408 transitions. [2021-06-05 17:13:19,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:19,056 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:19,056 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:19,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-06-05 17:13:19,056 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:19,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:19,056 INFO L82 PathProgramCache]: Analyzing trace with hash -615034008, now seen corresponding path program 163 times [2021-06-05 17:13:19,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:19,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478990752] [2021-06-05 17:13:19,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:19,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:19,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478990752] [2021-06-05 17:13:19,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478990752] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:19,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:19,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:19,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039639208] [2021-06-05 17:13:19,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:19,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:19,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:19,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:19,223 INFO L87 Difference]: Start difference. First operand 3706 states and 12408 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:20,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:20,342 INFO L93 Difference]: Finished difference Result 4234 states and 13981 transitions. [2021-06-05 17:13:20,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:13:20,342 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:20,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:20,348 INFO L225 Difference]: With dead ends: 4234 [2021-06-05 17:13:20,348 INFO L226 Difference]: Without dead ends: 4188 [2021-06-05 17:13:20,349 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 708.8ms TimeCoverageRelationStatistics Valid=233, Invalid=2023, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 17:13:20,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2021-06-05 17:13:20,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 3710. [2021-06-05 17:13:20,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3710 states, 3709 states have (on average 3.3475330277702886) internal successors, (12416), 3709 states have internal predecessors, (12416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3710 states to 3710 states and 12416 transitions. [2021-06-05 17:13:20,396 INFO L78 Accepts]: Start accepts. Automaton has 3710 states and 12416 transitions. Word has length 39 [2021-06-05 17:13:20,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:20,397 INFO L482 AbstractCegarLoop]: Abstraction has 3710 states and 12416 transitions. [2021-06-05 17:13:20,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:20,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3710 states and 12416 transitions. [2021-06-05 17:13:20,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:20,400 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:20,400 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:20,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-06-05 17:13:20,400 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:20,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:20,401 INFO L82 PathProgramCache]: Analyzing trace with hash -862500170, now seen corresponding path program 164 times [2021-06-05 17:13:20,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:20,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369789915] [2021-06-05 17:13:20,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:20,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:20,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369789915] [2021-06-05 17:13:20,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369789915] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:20,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:20,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:20,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674774619] [2021-06-05 17:13:20,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:20,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:20,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:20,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:20,571 INFO L87 Difference]: Start difference. First operand 3710 states and 12416 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:21,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:21,941 INFO L93 Difference]: Finished difference Result 4341 states and 14308 transitions. [2021-06-05 17:13:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 17:13:21,942 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:21,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:21,948 INFO L225 Difference]: With dead ends: 4341 [2021-06-05 17:13:21,948 INFO L226 Difference]: Without dead ends: 4277 [2021-06-05 17:13:21,948 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 905.3ms TimeCoverageRelationStatistics Valid=293, Invalid=2677, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 17:13:21,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2021-06-05 17:13:22,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 3760. [2021-06-05 17:13:22,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 3759 states have (on average 3.346368715083799) internal successors, (12579), 3759 states have internal predecessors, (12579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:22,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 12579 transitions. [2021-06-05 17:13:22,029 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 12579 transitions. Word has length 39 [2021-06-05 17:13:22,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:22,029 INFO L482 AbstractCegarLoop]: Abstraction has 3760 states and 12579 transitions. [2021-06-05 17:13:22,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:22,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 12579 transitions. [2021-06-05 17:13:22,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:22,033 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:22,033 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:22,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-06-05 17:13:22,033 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:22,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:22,033 INFO L82 PathProgramCache]: Analyzing trace with hash 676375352, now seen corresponding path program 165 times [2021-06-05 17:13:22,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:22,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788013361] [2021-06-05 17:13:22,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:22,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:22,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:22,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788013361] [2021-06-05 17:13:22,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788013361] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:22,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:22,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:22,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286201569] [2021-06-05 17:13:22,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:22,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:22,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:22,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:22,202 INFO L87 Difference]: Start difference. First operand 3760 states and 12579 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:23,221 INFO L93 Difference]: Finished difference Result 4215 states and 14023 transitions. [2021-06-05 17:13:23,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 17:13:23,222 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:23,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:23,228 INFO L225 Difference]: With dead ends: 4215 [2021-06-05 17:13:23,228 INFO L226 Difference]: Without dead ends: 4148 [2021-06-05 17:13:23,228 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 581.4ms TimeCoverageRelationStatistics Valid=181, Invalid=1625, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 17:13:23,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2021-06-05 17:13:23,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3800. [2021-06-05 17:13:23,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3800 states, 3799 states have (on average 3.339563042906028) internal successors, (12687), 3799 states have internal predecessors, (12687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:23,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 12687 transitions. [2021-06-05 17:13:23,274 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 12687 transitions. Word has length 39 [2021-06-05 17:13:23,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:23,274 INFO L482 AbstractCegarLoop]: Abstraction has 3800 states and 12687 transitions. [2021-06-05 17:13:23,274 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:23,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 12687 transitions. [2021-06-05 17:13:23,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:23,278 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:23,278 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:23,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-06-05 17:13:23,278 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:23,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:23,278 INFO L82 PathProgramCache]: Analyzing trace with hash 545780504, now seen corresponding path program 166 times [2021-06-05 17:13:23,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:23,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046200949] [2021-06-05 17:13:23,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:23,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:23,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046200949] [2021-06-05 17:13:23,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046200949] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:23,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:23,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:23,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716260698] [2021-06-05 17:13:23,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:23,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:23,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:23,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:23,445 INFO L87 Difference]: Start difference. First operand 3800 states and 12687 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:24,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:24,522 INFO L93 Difference]: Finished difference Result 4203 states and 13983 transitions. [2021-06-05 17:13:24,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 17:13:24,523 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 [2021-06-05 17:13:24,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:24,529 INFO L225 Difference]: With dead ends: 4203 [2021-06-05 17:13:24,529 INFO L226 Difference]: Without dead ends: 4140 [2021-06-05 17:13:24,529 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 632.7ms TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 17:13:24,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2021-06-05 17:13:24,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3792. [2021-06-05 17:13:24,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3792 states, 3791 states have (on average 3.340279609601688) internal successors, (12663), 3791 states have internal predecessors, (12663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:24,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3792 states to 3792 states and 12663 transitions. [2021-06-05 17:13:24,575 INFO L78 Accepts]: Start accepts. Automaton has 3792 states and 12663 transitions. Word has length 39 [2021-06-05 17:13:24,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:24,575 INFO L482 AbstractCegarLoop]: Abstraction has 3792 states and 12663 transitions. [2021-06-05 17:13:24,575 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 3792 states and 12663 transitions. [2021-06-05 17:13:24,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:24,579 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:24,579 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:24,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-06-05 17:13:24,579 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:24,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:24,579 INFO L82 PathProgramCache]: Analyzing trace with hash 15880056, now seen corresponding path program 167 times [2021-06-05 17:13:24,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:24,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068025501] [2021-06-05 17:13:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:24,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:24,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068025501] [2021-06-05 17:13:24,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068025501] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:24,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:24,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:24,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080047353] [2021-06-05 17:13:24,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:24,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:24,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:24,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:24,779 INFO L87 Difference]: Start difference. First operand 3792 states and 12663 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:25,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:25,844 INFO L93 Difference]: Finished difference Result 4227 states and 14043 transitions. [2021-06-05 17:13:25,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 17:13:25,844 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:25,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:25,851 INFO L225 Difference]: With dead ends: 4227 [2021-06-05 17:13:25,851 INFO L226 Difference]: Without dead ends: 4104 [2021-06-05 17:13:25,851 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 648.3ms TimeCoverageRelationStatistics Valid=195, Invalid=1785, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 17:13:25,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2021-06-05 17:13:25,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 3744. [2021-06-05 17:13:25,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 3743 states have (on average 3.347314987977558) internal successors, (12529), 3743 states have internal predecessors, (12529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:25,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 12529 transitions. [2021-06-05 17:13:25,897 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 12529 transitions. Word has length 39 [2021-06-05 17:13:25,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:25,897 INFO L482 AbstractCegarLoop]: Abstraction has 3744 states and 12529 transitions. [2021-06-05 17:13:25,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:25,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 12529 transitions. [2021-06-05 17:13:25,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:25,900 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:25,900 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:25,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-06-05 17:13:25,901 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:25,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:25,901 INFO L82 PathProgramCache]: Analyzing trace with hash -702531114, now seen corresponding path program 168 times [2021-06-05 17:13:25,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:25,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333074843] [2021-06-05 17:13:25,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:26,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:26,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:26,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333074843] [2021-06-05 17:13:26,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333074843] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:26,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:26,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:26,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015925045] [2021-06-05 17:13:26,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:26,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:26,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:26,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:26,065 INFO L87 Difference]: Start difference. First operand 3744 states and 12529 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:27,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:27,991 INFO L93 Difference]: Finished difference Result 6362 states and 21428 transitions. [2021-06-05 17:13:27,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 17:13:27,991 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:27,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:28,000 INFO L225 Difference]: With dead ends: 6362 [2021-06-05 17:13:28,001 INFO L226 Difference]: Without dead ends: 6319 [2021-06-05 17:13:28,001 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1146.3ms TimeCoverageRelationStatistics Valid=399, Invalid=4157, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 17:13:28,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6319 states. [2021-06-05 17:13:28,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6319 to 3972. [2021-06-05 17:13:28,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3972 states, 3971 states have (on average 3.3598589775875096) internal successors, (13342), 3971 states have internal predecessors, (13342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 13342 transitions. [2021-06-05 17:13:28,061 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 13342 transitions. Word has length 39 [2021-06-05 17:13:28,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:28,061 INFO L482 AbstractCegarLoop]: Abstraction has 3972 states and 13342 transitions. [2021-06-05 17:13:28,061 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:28,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 13342 transitions. [2021-06-05 17:13:28,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:28,065 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:28,065 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:28,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-06-05 17:13:28,065 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:28,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:28,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1811837880, now seen corresponding path program 169 times [2021-06-05 17:13:28,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:28,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109290874] [2021-06-05 17:13:28,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:28,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:28,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:28,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109290874] [2021-06-05 17:13:28,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109290874] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:28,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:28,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:28,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531497485] [2021-06-05 17:13:28,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:28,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:28,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:28,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:28,253 INFO L87 Difference]: Start difference. First operand 3972 states and 13342 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:30,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:30,520 INFO L93 Difference]: Finished difference Result 7267 states and 24502 transitions. [2021-06-05 17:13:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 17:13:30,520 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:30,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:30,531 INFO L225 Difference]: With dead ends: 7267 [2021-06-05 17:13:30,531 INFO L226 Difference]: Without dead ends: 7215 [2021-06-05 17:13:30,532 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 1356.5ms TimeCoverageRelationStatistics Valid=448, Invalid=5102, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 17:13:30,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7215 states. [2021-06-05 17:13:30,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7215 to 3942. [2021-06-05 17:13:30,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3941 states have (on average 3.3613296117736615) internal successors, (13247), 3941 states have internal predecessors, (13247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:30,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 13247 transitions. [2021-06-05 17:13:30,595 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 13247 transitions. Word has length 39 [2021-06-05 17:13:30,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:30,595 INFO L482 AbstractCegarLoop]: Abstraction has 3942 states and 13247 transitions. [2021-06-05 17:13:30,595 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:30,595 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 13247 transitions. [2021-06-05 17:13:30,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:30,599 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:30,599 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:30,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-06-05 17:13:30,599 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:30,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:30,600 INFO L82 PathProgramCache]: Analyzing trace with hash 215952456, now seen corresponding path program 170 times [2021-06-05 17:13:30,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:30,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188790575] [2021-06-05 17:13:30,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:30,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:30,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188790575] [2021-06-05 17:13:30,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188790575] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:30,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:30,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:30,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007512512] [2021-06-05 17:13:30,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:30,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:30,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:30,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:30,788 INFO L87 Difference]: Start difference. First operand 3942 states and 13247 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:32,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:32,207 INFO L93 Difference]: Finished difference Result 6269 states and 21030 transitions. [2021-06-05 17:13:32,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 17:13:32,208 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:32,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:32,217 INFO L225 Difference]: With dead ends: 6269 [2021-06-05 17:13:32,217 INFO L226 Difference]: Without dead ends: 6214 [2021-06-05 17:13:32,217 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 799.1ms TimeCoverageRelationStatistics Valid=262, Invalid=2390, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 17:13:32,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2021-06-05 17:13:32,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 4147. [2021-06-05 17:13:32,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 4146 states have (on average 3.3779546550892428) internal successors, (14005), 4146 states have internal predecessors, (14005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:32,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 14005 transitions. [2021-06-05 17:13:32,277 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 14005 transitions. Word has length 39 [2021-06-05 17:13:32,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:32,277 INFO L482 AbstractCegarLoop]: Abstraction has 4147 states and 14005 transitions. [2021-06-05 17:13:32,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:32,277 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 14005 transitions. [2021-06-05 17:13:32,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:32,282 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:32,282 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:32,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-06-05 17:13:32,282 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:32,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:32,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1388604678, now seen corresponding path program 171 times [2021-06-05 17:13:32,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:32,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924261528] [2021-06-05 17:13:32,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:32,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:32,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924261528] [2021-06-05 17:13:32,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924261528] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:32,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:32,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:32,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649817340] [2021-06-05 17:13:32,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:32,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:32,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:32,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:32,463 INFO L87 Difference]: Start difference. First operand 4147 states and 14005 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:34,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:34,176 INFO L93 Difference]: Finished difference Result 7174 states and 24108 transitions. [2021-06-05 17:13:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 17:13:34,176 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 [2021-06-05 17:13:34,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:34,188 INFO L225 Difference]: With dead ends: 7174 [2021-06-05 17:13:34,188 INFO L226 Difference]: Without dead ends: 7114 [2021-06-05 17:13:34,189 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 913.4ms TimeCoverageRelationStatistics Valid=300, Invalid=3006, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 17:13:34,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7114 states. [2021-06-05 17:13:34,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7114 to 4145. [2021-06-05 17:13:34,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 4144 states have (on average 3.3783783783783785) internal successors, (14000), 4144 states have internal predecessors, (14000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:34,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 14000 transitions. [2021-06-05 17:13:34,254 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 14000 transitions. Word has length 39 [2021-06-05 17:13:34,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:34,254 INFO L482 AbstractCegarLoop]: Abstraction has 4145 states and 14000 transitions. [2021-06-05 17:13:34,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:34,255 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 14000 transitions. [2021-06-05 17:13:34,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:34,259 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:34,259 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:34,259 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-06-05 17:13:34,259 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:34,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:34,259 INFO L82 PathProgramCache]: Analyzing trace with hash -488798924, now seen corresponding path program 172 times [2021-06-05 17:13:34,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:34,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729405257] [2021-06-05 17:13:34,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:34,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:34,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729405257] [2021-06-05 17:13:34,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729405257] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:34,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:34,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:34,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223707687] [2021-06-05 17:13:34,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:34,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:34,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:34,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:34,425 INFO L87 Difference]: Start difference. First operand 4145 states and 14000 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:35,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:35,808 INFO L93 Difference]: Finished difference Result 6238 states and 20984 transitions. [2021-06-05 17:13:35,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 17:13:35,808 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:35,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:35,817 INFO L225 Difference]: With dead ends: 6238 [2021-06-05 17:13:35,817 INFO L226 Difference]: Without dead ends: 6147 [2021-06-05 17:13:35,817 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 735.2ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:13:35,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6147 states. [2021-06-05 17:13:35,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6147 to 4145. [2021-06-05 17:13:35,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 4144 states have (on average 3.376930501930502) internal successors, (13994), 4144 states have internal predecessors, (13994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:35,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 13994 transitions. [2021-06-05 17:13:35,876 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 13994 transitions. Word has length 39 [2021-06-05 17:13:35,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:35,877 INFO L482 AbstractCegarLoop]: Abstraction has 4145 states and 13994 transitions. [2021-06-05 17:13:35,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:35,877 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 13994 transitions. [2021-06-05 17:13:35,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:35,881 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:35,881 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:35,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-06-05 17:13:35,881 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:35,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:35,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1991281130, now seen corresponding path program 173 times [2021-06-05 17:13:35,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:35,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807949111] [2021-06-05 17:13:35,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:36,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:36,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807949111] [2021-06-05 17:13:36,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807949111] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:36,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:36,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:36,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094274737] [2021-06-05 17:13:36,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:36,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:36,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:36,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:36,049 INFO L87 Difference]: Start difference. First operand 4145 states and 13994 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:37,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:37,816 INFO L93 Difference]: Finished difference Result 7326 states and 24599 transitions. [2021-06-05 17:13:37,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 17:13:37,816 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:37,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:37,827 INFO L225 Difference]: With dead ends: 7326 [2021-06-05 17:13:37,827 INFO L226 Difference]: Without dead ends: 7147 [2021-06-05 17:13:37,827 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 922.9ms TimeCoverageRelationStatistics Valid=290, Invalid=3016, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 17:13:37,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7147 states. [2021-06-05 17:13:37,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7147 to 4326. [2021-06-05 17:13:37,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4325 states have (on average 3.3784971098265895) internal successors, (14612), 4325 states have internal predecessors, (14612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 14612 transitions. [2021-06-05 17:13:37,892 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 14612 transitions. Word has length 39 [2021-06-05 17:13:37,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:37,892 INFO L482 AbstractCegarLoop]: Abstraction has 4326 states and 14612 transitions. [2021-06-05 17:13:37,892 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:37,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 14612 transitions. [2021-06-05 17:13:37,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:37,896 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:37,897 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:37,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-06-05 17:13:37,897 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:37,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:37,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1457358134, now seen corresponding path program 174 times [2021-06-05 17:13:37,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:37,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273355282] [2021-06-05 17:13:37,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:38,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:38,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:38,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273355282] [2021-06-05 17:13:38,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273355282] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:38,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:38,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 17:13:38,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467441982] [2021-06-05 17:13:38,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:13:38,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:38,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:13:38,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:13:38,061 INFO L87 Difference]: Start difference. First operand 4326 states and 14612 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:39,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:39,107 INFO L93 Difference]: Finished difference Result 4703 states and 15805 transitions. [2021-06-05 17:13:39,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 17:13:39,107 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 [2021-06-05 17:13:39,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:39,114 INFO L225 Difference]: With dead ends: 4703 [2021-06-05 17:13:39,114 INFO L226 Difference]: Without dead ends: 4636 [2021-06-05 17:13:39,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 660.2ms TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 17:13:39,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4636 states. [2021-06-05 17:13:39,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4636 to 4338. [2021-06-05 17:13:39,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4337 states have (on average 3.3751441088309893) internal successors, (14638), 4337 states have internal predecessors, (14638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:39,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 14638 transitions. [2021-06-05 17:13:39,169 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 14638 transitions. Word has length 39 [2021-06-05 17:13:39,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:39,169 INFO L482 AbstractCegarLoop]: Abstraction has 4338 states and 14638 transitions. [2021-06-05 17:13:39,169 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) [2021-06-05 17:13:39,170 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 14638 transitions. [2021-06-05 17:13:39,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:39,174 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:39,174 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:39,174 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-06-05 17:13:39,174 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:39,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:39,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1117993192, now seen corresponding path program 175 times [2021-06-05 17:13:39,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:39,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048829629] [2021-06-05 17:13:39,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:39,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:39,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048829629] [2021-06-05 17:13:39,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048829629] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:39,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:39,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 17:13:39,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413663969] [2021-06-05 17:13:39,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:13:39,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:39,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:13:39,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:13:39,328 INFO L87 Difference]: Start difference. First operand 4338 states and 14638 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:40,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:40,779 INFO L93 Difference]: Finished difference Result 4752 states and 15968 transitions. [2021-06-05 17:13:40,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:13:40,780 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 [2021-06-05 17:13:40,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:40,786 INFO L225 Difference]: With dead ends: 4752 [2021-06-05 17:13:40,787 INFO L226 Difference]: Without dead ends: 4691 [2021-06-05 17:13:40,787 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 937.1ms TimeCoverageRelationStatistics Valid=291, Invalid=2789, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:13:40,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2021-06-05 17:13:40,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 4326. [2021-06-05 17:13:40,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4325 states have (on average 3.3757225433526012) internal successors, (14600), 4325 states have internal predecessors, (14600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:40,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 14600 transitions. [2021-06-05 17:13:40,841 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 14600 transitions. Word has length 39 [2021-06-05 17:13:40,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:40,841 INFO L482 AbstractCegarLoop]: Abstraction has 4326 states and 14600 transitions. [2021-06-05 17:13:40,841 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) [2021-06-05 17:13:40,841 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 14600 transitions. [2021-06-05 17:13:40,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:40,845 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:40,845 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:40,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-06-05 17:13:40,845 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:40,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:40,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1071420726, now seen corresponding path program 176 times [2021-06-05 17:13:40,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:40,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745903614] [2021-06-05 17:13:40,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:40,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:40,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:40,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745903614] [2021-06-05 17:13:40,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745903614] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:40,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:40,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 17:13:40,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393675226] [2021-06-05 17:13:40,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:13:40,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:40,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:13:41,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:13:41,000 INFO L87 Difference]: Start difference. First operand 4326 states and 14600 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:42,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:42,386 INFO L93 Difference]: Finished difference Result 4727 states and 15862 transitions. [2021-06-05 17:13:42,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 17:13:42,386 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 [2021-06-05 17:13:42,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:42,396 INFO L225 Difference]: With dead ends: 4727 [2021-06-05 17:13:42,396 INFO L226 Difference]: Without dead ends: 4597 [2021-06-05 17:13:42,396 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 864.9ms TimeCoverageRelationStatistics Valid=255, Invalid=2397, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 17:13:42,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4597 states. [2021-06-05 17:13:42,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4597 to 4302. [2021-06-05 17:13:42,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 4301 states have (on average 3.377819111834457) internal successors, (14528), 4301 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:42,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 14528 transitions. [2021-06-05 17:13:42,451 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 14528 transitions. Word has length 39 [2021-06-05 17:13:42,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:42,451 INFO L482 AbstractCegarLoop]: Abstraction has 4302 states and 14528 transitions. [2021-06-05 17:13:42,452 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) [2021-06-05 17:13:42,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 14528 transitions. [2021-06-05 17:13:42,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:42,456 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:42,456 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:42,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-06-05 17:13:42,456 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:42,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:42,456 INFO L82 PathProgramCache]: Analyzing trace with hash 766531126, now seen corresponding path program 177 times [2021-06-05 17:13:42,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:42,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9094908] [2021-06-05 17:13:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:42,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:42,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9094908] [2021-06-05 17:13:42,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9094908] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:42,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:42,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:42,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12146805] [2021-06-05 17:13:42,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:42,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:42,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:42,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:42,629 INFO L87 Difference]: Start difference. First operand 4302 states and 14528 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:43,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:43,852 INFO L93 Difference]: Finished difference Result 4711 states and 15809 transitions. [2021-06-05 17:13:43,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 17:13:43,852 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:43,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:43,859 INFO L225 Difference]: With dead ends: 4711 [2021-06-05 17:13:43,859 INFO L226 Difference]: Without dead ends: 4644 [2021-06-05 17:13:43,859 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 783.4ms TimeCoverageRelationStatistics Valid=251, Invalid=2299, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:13:43,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4644 states. [2021-06-05 17:13:43,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4644 to 4302. [2021-06-05 17:13:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 4301 states have (on average 3.375029063008603) internal successors, (14516), 4301 states have internal predecessors, (14516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:43,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 14516 transitions. [2021-06-05 17:13:43,914 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 14516 transitions. Word has length 39 [2021-06-05 17:13:43,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:43,914 INFO L482 AbstractCegarLoop]: Abstraction has 4302 states and 14516 transitions. [2021-06-05 17:13:43,914 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:43,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 14516 transitions. [2021-06-05 17:13:43,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:43,919 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:43,919 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:43,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-06-05 17:13:43,919 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:43,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:43,919 INFO L82 PathProgramCache]: Analyzing trace with hash -953084844, now seen corresponding path program 178 times [2021-06-05 17:13:43,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:43,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624359105] [2021-06-05 17:13:43,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:44,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:44,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624359105] [2021-06-05 17:13:44,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624359105] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:44,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:44,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:44,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107098460] [2021-06-05 17:13:44,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:44,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:44,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:44,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:44,100 INFO L87 Difference]: Start difference. First operand 4302 states and 14516 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:45,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:45,734 INFO L93 Difference]: Finished difference Result 4799 states and 16051 transitions. [2021-06-05 17:13:45,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 17:13:45,734 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 [2021-06-05 17:13:45,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:45,741 INFO L225 Difference]: With dead ends: 4799 [2021-06-05 17:13:45,741 INFO L226 Difference]: Without dead ends: 4738 [2021-06-05 17:13:45,741 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 1076.4ms TimeCoverageRelationStatistics Valid=345, Invalid=3437, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 17:13:45,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4738 states. [2021-06-05 17:13:45,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4738 to 4290. [2021-06-05 17:13:45,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4289 states have (on average 3.377477267428305) internal successors, (14486), 4289 states have internal predecessors, (14486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:45,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 14486 transitions. [2021-06-05 17:13:45,795 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 14486 transitions. Word has length 39 [2021-06-05 17:13:45,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:45,795 INFO L482 AbstractCegarLoop]: Abstraction has 4290 states and 14486 transitions. [2021-06-05 17:13:45,795 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) [2021-06-05 17:13:45,795 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 14486 transitions. [2021-06-05 17:13:45,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:45,799 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:45,800 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:45,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-06-05 17:13:45,800 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:45,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:45,800 INFO L82 PathProgramCache]: Analyzing trace with hash -2113248746, now seen corresponding path program 179 times [2021-06-05 17:13:45,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:45,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681631962] [2021-06-05 17:13:45,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:45,963 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:45,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681631962] [2021-06-05 17:13:45,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681631962] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:45,964 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:45,964 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:45,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539782682] [2021-06-05 17:13:45,964 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:45,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:45,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:45,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:45,964 INFO L87 Difference]: Start difference. First operand 4290 states and 14486 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:46,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:46,983 INFO L93 Difference]: Finished difference Result 4597 states and 15444 transitions. [2021-06-05 17:13:46,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 17:13:46,983 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:46,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:46,990 INFO L225 Difference]: With dead ends: 4597 [2021-06-05 17:13:46,990 INFO L226 Difference]: Without dead ends: 4530 [2021-06-05 17:13:46,991 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 656.4ms TimeCoverageRelationStatistics Valid=205, Invalid=1775, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 17:13:47,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4530 states. [2021-06-05 17:13:47,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4530 to 4298. [2021-06-05 17:13:47,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4297 states have (on average 3.3749127298114963) internal successors, (14502), 4297 states have internal predecessors, (14502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:47,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 14502 transitions. [2021-06-05 17:13:47,044 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 14502 transitions. Word has length 39 [2021-06-05 17:13:47,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:47,045 INFO L482 AbstractCegarLoop]: Abstraction has 4298 states and 14502 transitions. [2021-06-05 17:13:47,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:47,045 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 14502 transitions. [2021-06-05 17:13:47,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:47,049 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:47,049 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:47,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-06-05 17:13:47,049 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:47,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:47,049 INFO L82 PathProgramCache]: Analyzing trace with hash 2051123702, now seen corresponding path program 180 times [2021-06-05 17:13:47,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:47,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310655816] [2021-06-05 17:13:47,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:47,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:47,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:47,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310655816] [2021-06-05 17:13:47,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310655816] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:47,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:47,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:47,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053737240] [2021-06-05 17:13:47,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:47,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:47,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:47,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:47,259 INFO L87 Difference]: Start difference. First operand 4298 states and 14502 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:48,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:48,277 INFO L93 Difference]: Finished difference Result 4585 states and 15404 transitions. [2021-06-05 17:13:48,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 17:13:48,277 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:48,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:48,285 INFO L225 Difference]: With dead ends: 4585 [2021-06-05 17:13:48,285 INFO L226 Difference]: Without dead ends: 4522 [2021-06-05 17:13:48,285 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 692.6ms TimeCoverageRelationStatistics Valid=211, Invalid=1859, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 17:13:48,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4522 states. [2021-06-05 17:13:48,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4522 to 4290. [2021-06-05 17:13:48,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4290 states, 4289 states have (on average 3.376544649102355) internal successors, (14482), 4289 states have internal predecessors, (14482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:48,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 14482 transitions. [2021-06-05 17:13:48,347 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 14482 transitions. Word has length 39 [2021-06-05 17:13:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:48,347 INFO L482 AbstractCegarLoop]: Abstraction has 4290 states and 14482 transitions. [2021-06-05 17:13:48,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 14482 transitions. [2021-06-05 17:13:48,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:48,353 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:48,353 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:48,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-06-05 17:13:48,354 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:48,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:48,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1915445110, now seen corresponding path program 181 times [2021-06-05 17:13:48,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:48,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832245156] [2021-06-05 17:13:48,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:48,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:48,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832245156] [2021-06-05 17:13:48,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832245156] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:48,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:48,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:48,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267704128] [2021-06-05 17:13:48,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:48,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:48,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:48,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:48,593 INFO L87 Difference]: Start difference. First operand 4290 states and 14482 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:49,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:49,957 INFO L93 Difference]: Finished difference Result 4691 states and 15658 transitions. [2021-06-05 17:13:49,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:13:49,957 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 [2021-06-05 17:13:49,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:49,964 INFO L225 Difference]: With dead ends: 4691 [2021-06-05 17:13:49,964 INFO L226 Difference]: Without dead ends: 4642 [2021-06-05 17:13:49,964 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 979.1ms TimeCoverageRelationStatistics Valid=302, Invalid=2778, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:13:49,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4642 states. [2021-06-05 17:13:50,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4642 to 4284. [2021-06-05 17:13:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 4283 states have (on average 3.3777725893065607) internal successors, (14467), 4283 states have internal predecessors, (14467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:50,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 14467 transitions. [2021-06-05 17:13:50,022 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 14467 transitions. Word has length 39 [2021-06-05 17:13:50,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:50,022 INFO L482 AbstractCegarLoop]: Abstraction has 4284 states and 14467 transitions. [2021-06-05 17:13:50,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 14467 transitions. [2021-06-05 17:13:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:50,026 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:50,026 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:50,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-06-05 17:13:50,026 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:50,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:50,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1461038616, now seen corresponding path program 182 times [2021-06-05 17:13:50,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:50,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207907584] [2021-06-05 17:13:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:50,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:50,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207907584] [2021-06-05 17:13:50,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207907584] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:50,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:50,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:50,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977463573] [2021-06-05 17:13:50,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:50,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:50,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:50,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:50,191 INFO L87 Difference]: Start difference. First operand 4284 states and 14467 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:51,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:51,254 INFO L93 Difference]: Finished difference Result 4619 states and 15474 transitions. [2021-06-05 17:13:51,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:13:51,254 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 [2021-06-05 17:13:51,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:51,261 INFO L225 Difference]: With dead ends: 4619 [2021-06-05 17:13:51,261 INFO L226 Difference]: Without dead ends: 4564 [2021-06-05 17:13:51,262 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 681.6ms TimeCoverageRelationStatistics Valid=225, Invalid=1937, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:13:51,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2021-06-05 17:13:51,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 4284. [2021-06-05 17:13:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 4283 states have (on average 3.377305626897035) internal successors, (14465), 4283 states have internal predecessors, (14465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:51,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 14465 transitions. [2021-06-05 17:13:51,315 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 14465 transitions. Word has length 39 [2021-06-05 17:13:51,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:51,315 INFO L482 AbstractCegarLoop]: Abstraction has 4284 states and 14465 transitions. [2021-06-05 17:13:51,315 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) [2021-06-05 17:13:51,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 14465 transitions. [2021-06-05 17:13:51,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:51,320 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:51,320 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:51,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-06-05 17:13:51,320 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:51,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:51,320 INFO L82 PathProgramCache]: Analyzing trace with hash -288386394, now seen corresponding path program 183 times [2021-06-05 17:13:51,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:51,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488203020] [2021-06-05 17:13:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:51,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:51,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488203020] [2021-06-05 17:13:51,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488203020] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:51,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:51,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:51,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292067888] [2021-06-05 17:13:51,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:51,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:51,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:51,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:51,485 INFO L87 Difference]: Start difference. First operand 4284 states and 14465 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:52,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:52,476 INFO L93 Difference]: Finished difference Result 4562 states and 15342 transitions. [2021-06-05 17:13:52,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 17:13:52,481 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:52,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:52,488 INFO L225 Difference]: With dead ends: 4562 [2021-06-05 17:13:52,488 INFO L226 Difference]: Without dead ends: 4506 [2021-06-05 17:13:52,488 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 646.6ms TimeCoverageRelationStatistics Valid=211, Invalid=1769, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 17:13:52,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2021-06-05 17:13:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 4274. [2021-06-05 17:13:52,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4274 states, 4273 states have (on average 3.3802948747952257) internal successors, (14444), 4273 states have internal predecessors, (14444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:52,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 14444 transitions. [2021-06-05 17:13:52,544 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 14444 transitions. Word has length 39 [2021-06-05 17:13:52,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:52,544 INFO L482 AbstractCegarLoop]: Abstraction has 4274 states and 14444 transitions. [2021-06-05 17:13:52,544 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:52,544 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 14444 transitions. [2021-06-05 17:13:52,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:52,548 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:52,548 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:52,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-06-05 17:13:52,548 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:52,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:52,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1953661928, now seen corresponding path program 184 times [2021-06-05 17:13:52,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:52,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130700864] [2021-06-05 17:13:52,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:52,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:52,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:52,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130700864] [2021-06-05 17:13:52,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130700864] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:52,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:52,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:52,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312499931] [2021-06-05 17:13:52,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:52,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:52,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:52,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:52,715 INFO L87 Difference]: Start difference. First operand 4274 states and 14444 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:54,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:54,314 INFO L93 Difference]: Finished difference Result 4832 states and 16094 transitions. [2021-06-05 17:13:54,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 17:13:54,315 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:54,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:54,322 INFO L225 Difference]: With dead ends: 4832 [2021-06-05 17:13:54,322 INFO L226 Difference]: Without dead ends: 4695 [2021-06-05 17:13:54,322 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 1022.9ms TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 17:13:54,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4695 states. [2021-06-05 17:13:54,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4695 to 4278. [2021-06-05 17:13:54,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4277 states have (on average 3.37947159223755) internal successors, (14454), 4277 states have internal predecessors, (14454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:54,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 14454 transitions. [2021-06-05 17:13:54,378 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 14454 transitions. Word has length 39 [2021-06-05 17:13:54,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:54,378 INFO L482 AbstractCegarLoop]: Abstraction has 4278 states and 14454 transitions. [2021-06-05 17:13:54,378 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) [2021-06-05 17:13:54,378 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 14454 transitions. [2021-06-05 17:13:54,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:54,382 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:54,382 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:54,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-06-05 17:13:54,382 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:54,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:54,383 INFO L82 PathProgramCache]: Analyzing trace with hash 458771028, now seen corresponding path program 185 times [2021-06-05 17:13:54,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:54,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595388507] [2021-06-05 17:13:54,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:54,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:54,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:54,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595388507] [2021-06-05 17:13:54,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595388507] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:54,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:54,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:54,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333267604] [2021-06-05 17:13:54,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:54,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:54,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:54,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:54,554 INFO L87 Difference]: Start difference. First operand 4278 states and 14454 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:55,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:55,963 INFO L93 Difference]: Finished difference Result 4810 states and 15960 transitions. [2021-06-05 17:13:55,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:13:55,964 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:55,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:55,971 INFO L225 Difference]: With dead ends: 4810 [2021-06-05 17:13:55,971 INFO L226 Difference]: Without dead ends: 4746 [2021-06-05 17:13:55,971 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 944.9ms TimeCoverageRelationStatistics Valid=293, Invalid=2787, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:13:55,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4746 states. [2021-06-05 17:13:56,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4746 to 4278. [2021-06-05 17:13:56,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4277 states have (on average 3.37947159223755) internal successors, (14454), 4277 states have internal predecessors, (14454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:56,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 14454 transitions. [2021-06-05 17:13:56,025 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 14454 transitions. Word has length 39 [2021-06-05 17:13:56,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:56,025 INFO L482 AbstractCegarLoop]: Abstraction has 4278 states and 14454 transitions. [2021-06-05 17:13:56,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:56,025 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 14454 transitions. [2021-06-05 17:13:56,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:56,030 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:56,030 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:56,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-06-05 17:13:56,030 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:56,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:56,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1377254598, now seen corresponding path program 186 times [2021-06-05 17:13:56,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:56,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309062127] [2021-06-05 17:13:56,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:56,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:56,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309062127] [2021-06-05 17:13:56,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309062127] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:56,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:56,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:56,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180637088] [2021-06-05 17:13:56,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:56,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:56,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:56,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:56,198 INFO L87 Difference]: Start difference. First operand 4278 states and 14454 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:57,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:57,263 INFO L93 Difference]: Finished difference Result 4716 states and 15712 transitions. [2021-06-05 17:13:57,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 17:13:57,263 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:57,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:57,270 INFO L225 Difference]: With dead ends: 4716 [2021-06-05 17:13:57,270 INFO L226 Difference]: Without dead ends: 4661 [2021-06-05 17:13:57,270 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 671.2ms TimeCoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:13:57,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4661 states. [2021-06-05 17:13:57,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4661 to 4280. [2021-06-05 17:13:57,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 4279 states have (on average 3.378593129235803) internal successors, (14457), 4279 states have internal predecessors, (14457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:57,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 14457 transitions. [2021-06-05 17:13:57,349 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 14457 transitions. Word has length 39 [2021-06-05 17:13:57,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:57,349 INFO L482 AbstractCegarLoop]: Abstraction has 4280 states and 14457 transitions. [2021-06-05 17:13:57,349 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:57,349 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 14457 transitions. [2021-06-05 17:13:57,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:57,354 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:57,354 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:57,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-06-05 17:13:57,354 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:57,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:57,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1745060476, now seen corresponding path program 187 times [2021-06-05 17:13:57,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:57,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536534655] [2021-06-05 17:13:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:57,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:57,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536534655] [2021-06-05 17:13:57,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536534655] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:57,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:57,521 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:57,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228251557] [2021-06-05 17:13:57,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:57,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:57,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:57,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:57,522 INFO L87 Difference]: Start difference. First operand 4280 states and 14457 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:58,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:58,575 INFO L93 Difference]: Finished difference Result 4686 states and 15651 transitions. [2021-06-05 17:13:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:13:58,575 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:13:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:58,582 INFO L225 Difference]: With dead ends: 4686 [2021-06-05 17:13:58,582 INFO L226 Difference]: Without dead ends: 4626 [2021-06-05 17:13:58,583 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 680.4ms TimeCoverageRelationStatistics Valid=217, Invalid=1945, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:13:58,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4626 states. [2021-06-05 17:13:58,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4626 to 4278. [2021-06-05 17:13:58,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4278 states, 4277 states have (on average 3.3790039747486555) internal successors, (14452), 4277 states have internal predecessors, (14452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:58,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 14452 transitions. [2021-06-05 17:13:58,636 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 14452 transitions. Word has length 39 [2021-06-05 17:13:58,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:58,637 INFO L482 AbstractCegarLoop]: Abstraction has 4278 states and 14452 transitions. [2021-06-05 17:13:58,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:58,637 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 14452 transitions. [2021-06-05 17:13:58,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:58,641 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:58,641 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:58,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-06-05 17:13:58,641 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:58,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:58,641 INFO L82 PathProgramCache]: Analyzing trace with hash 470340278, now seen corresponding path program 188 times [2021-06-05 17:13:58,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:58,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515558728] [2021-06-05 17:13:58,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:58,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:58,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:58,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515558728] [2021-06-05 17:13:58,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515558728] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:58,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:58,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 17:13:58,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516034302] [2021-06-05 17:13:58,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:13:58,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:58,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:13:58,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:13:58,792 INFO L87 Difference]: Start difference. First operand 4278 states and 14452 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:59,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:13:59,741 INFO L93 Difference]: Finished difference Result 4597 states and 15438 transitions. [2021-06-05 17:13:59,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 17:13:59,741 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 [2021-06-05 17:13:59,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:13:59,748 INFO L225 Difference]: With dead ends: 4597 [2021-06-05 17:13:59,748 INFO L226 Difference]: Without dead ends: 4521 [2021-06-05 17:13:59,748 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 592.2ms TimeCoverageRelationStatistics Valid=190, Invalid=1616, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 17:13:59,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4521 states. [2021-06-05 17:13:59,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4521 to 4286. [2021-06-05 17:13:59,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 4285 states have (on average 3.3764294049008168) internal successors, (14468), 4285 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:13:59,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 14468 transitions. [2021-06-05 17:13:59,803 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 14468 transitions. Word has length 39 [2021-06-05 17:13:59,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:13:59,803 INFO L482 AbstractCegarLoop]: Abstraction has 4286 states and 14468 transitions. [2021-06-05 17:13:59,803 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) [2021-06-05 17:13:59,803 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 14468 transitions. [2021-06-05 17:13:59,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:13:59,807 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:13:59,808 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:13:59,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-06-05 17:13:59,808 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:13:59,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:13:59,808 INFO L82 PathProgramCache]: Analyzing trace with hash -547713334, now seen corresponding path program 189 times [2021-06-05 17:13:59,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:13:59,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074224712] [2021-06-05 17:13:59,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:13:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:13:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:13:59,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:13:59,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074224712] [2021-06-05 17:13:59,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074224712] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:13:59,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:13:59,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:13:59,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430789277] [2021-06-05 17:13:59,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:13:59,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:13:59,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:13:59,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:13:59,973 INFO L87 Difference]: Start difference. First operand 4286 states and 14468 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:00,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:00,990 INFO L93 Difference]: Finished difference Result 4579 states and 15384 transitions. [2021-06-05 17:14:00,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 17:14:00,991 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:00,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:00,998 INFO L225 Difference]: With dead ends: 4579 [2021-06-05 17:14:00,998 INFO L226 Difference]: Without dead ends: 4501 [2021-06-05 17:14:00,998 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 654.2ms TimeCoverageRelationStatistics Valid=206, Invalid=1864, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 17:14:01,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4501 states. [2021-06-05 17:14:01,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4501 to 4266. [2021-06-05 17:14:01,046 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) [2021-06-05 17:14:01,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4266 states to 4266 states and 14420 transitions. [2021-06-05 17:14:01,052 INFO L78 Accepts]: Start accepts. Automaton has 4266 states and 14420 transitions. Word has length 39 [2021-06-05 17:14:01,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:01,053 INFO L482 AbstractCegarLoop]: Abstraction has 4266 states and 14420 transitions. [2021-06-05 17:14:01,053 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:01,053 INFO L276 IsEmpty]: Start isEmpty. Operand 4266 states and 14420 transitions. [2021-06-05 17:14:01,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:01,057 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:01,057 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:01,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-06-05 17:14:01,057 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:01,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:01,057 INFO L82 PathProgramCache]: Analyzing trace with hash -358048246, now seen corresponding path program 190 times [2021-06-05 17:14:01,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:01,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909712196] [2021-06-05 17:14:01,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:01,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:01,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:01,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909712196] [2021-06-05 17:14:01,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909712196] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:01,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:01,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:14:01,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120720148] [2021-06-05 17:14:01,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:14:01,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:01,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:14:01,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:14:01,226 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) [2021-06-05 17:14:02,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:02,738 INFO L93 Difference]: Finished difference Result 4817 states and 16072 transitions. [2021-06-05 17:14:02,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 17:14:02,739 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 [2021-06-05 17:14:02,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:02,746 INFO L225 Difference]: With dead ends: 4817 [2021-06-05 17:14:02,746 INFO L226 Difference]: Without dead ends: 4711 [2021-06-05 17:14:02,746 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 929.6ms TimeCoverageRelationStatistics Valid=272, Invalid=2698, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 17:14:02,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2021-06-05 17:14:02,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 4288. [2021-06-05 17:14:02,794 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) [2021-06-05 17:14:02,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 14496 transitions. [2021-06-05 17:14:02,801 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 14496 transitions. Word has length 39 [2021-06-05 17:14:02,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:02,801 INFO L482 AbstractCegarLoop]: Abstraction has 4288 states and 14496 transitions. [2021-06-05 17:14:02,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:02,801 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 14496 transitions. [2021-06-05 17:14:02,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:02,805 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:02,805 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:02,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-06-05 17:14:02,806 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:02,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:02,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1852939146, now seen corresponding path program 191 times [2021-06-05 17:14:02,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:02,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572706943] [2021-06-05 17:14:02,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:02,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:02,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:02,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572706943] [2021-06-05 17:14:02,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572706943] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:02,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:02,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:14:02,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921705267] [2021-06-05 17:14:02,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:14:02,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:02,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:14:02,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:14:02,979 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) [2021-06-05 17:14:04,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:04,367 INFO L93 Difference]: Finished difference Result 4854 states and 16096 transitions. [2021-06-05 17:14:04,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 17:14:04,367 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:04,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:04,375 INFO L225 Difference]: With dead ends: 4854 [2021-06-05 17:14:04,375 INFO L226 Difference]: Without dead ends: 4790 [2021-06-05 17:14:04,376 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 913.2ms TimeCoverageRelationStatistics Valid=287, Invalid=2793, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:14:04,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4790 states. [2021-06-05 17:14:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 4304. [2021-06-05 17:14:04,431 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) [2021-06-05 17:14:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 14548 transitions. [2021-06-05 17:14:04,437 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 14548 transitions. Word has length 39 [2021-06-05 17:14:04,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:04,437 INFO L482 AbstractCegarLoop]: Abstraction has 4304 states and 14548 transitions. [2021-06-05 17:14:04,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:04,437 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 14548 transitions. [2021-06-05 17:14:04,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:04,442 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:04,442 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:04,442 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-06-05 17:14:04,442 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:04,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:04,442 INFO L82 PathProgramCache]: Analyzing trace with hash -934455576, now seen corresponding path program 192 times [2021-06-05 17:14:04,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:04,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482609758] [2021-06-05 17:14:04,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:04,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:04,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:04,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482609758] [2021-06-05 17:14:04,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482609758] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:04,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:04,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:14:04,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295001147] [2021-06-05 17:14:04,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:14:04,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:04,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:14:04,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:14:04,610 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) [2021-06-05 17:14:05,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:05,629 INFO L93 Difference]: Finished difference Result 4752 states and 15828 transitions. [2021-06-05 17:14:05,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 17:14:05,629 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:05,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:05,636 INFO L225 Difference]: With dead ends: 4752 [2021-06-05 17:14:05,636 INFO L226 Difference]: Without dead ends: 4709 [2021-06-05 17:14:05,637 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 641.0ms TimeCoverageRelationStatistics Valid=203, Invalid=1867, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 17:14:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4709 states. [2021-06-05 17:14:05,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4709 to 4310. [2021-06-05 17:14:05,688 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) [2021-06-05 17:14:05,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 14561 transitions. [2021-06-05 17:14:05,694 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 14561 transitions. Word has length 39 [2021-06-05 17:14:05,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:05,694 INFO L482 AbstractCegarLoop]: Abstraction has 4310 states and 14561 transitions. [2021-06-05 17:14:05,694 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:05,695 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 14561 transitions. [2021-06-05 17:14:05,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:05,700 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:05,700 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:05,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-06-05 17:14:05,700 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:05,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:05,700 INFO L82 PathProgramCache]: Analyzing trace with hash -914306842, now seen corresponding path program 193 times [2021-06-05 17:14:05,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:05,700 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529141484] [2021-06-05 17:14:05,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:05,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:05,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529141484] [2021-06-05 17:14:05,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529141484] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:05,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:05,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:14:05,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888928861] [2021-06-05 17:14:05,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:14:05,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:05,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:14:05,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:14:05,898 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) [2021-06-05 17:14:07,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:07,031 INFO L93 Difference]: Finished difference Result 4723 states and 15772 transitions. [2021-06-05 17:14:07,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 17:14:07,031 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:07,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:07,039 INFO L225 Difference]: With dead ends: 4723 [2021-06-05 17:14:07,039 INFO L226 Difference]: Without dead ends: 4680 [2021-06-05 17:14:07,039 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 777.5ms TimeCoverageRelationStatistics Valid=230, Invalid=2122, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 17:14:07,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2021-06-05 17:14:07,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 4306. [2021-06-05 17:14:07,091 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) [2021-06-05 17:14:07,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4306 states to 4306 states and 14551 transitions. [2021-06-05 17:14:07,097 INFO L78 Accepts]: Start accepts. Automaton has 4306 states and 14551 transitions. Word has length 39 [2021-06-05 17:14:07,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:07,097 INFO L482 AbstractCegarLoop]: Abstraction has 4306 states and 14551 transitions. [2021-06-05 17:14:07,097 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states and 14551 transitions. [2021-06-05 17:14:07,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:07,102 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:07,102 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:07,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-06-05 17:14:07,102 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:07,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:07,102 INFO L82 PathProgramCache]: Analyzing trace with hash 238196646, now seen corresponding path program 194 times [2021-06-05 17:14:07,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:07,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843728115] [2021-06-05 17:14:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:07,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:07,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:07,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843728115] [2021-06-05 17:14:07,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843728115] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:07,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:07,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:14:07,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999984342] [2021-06-05 17:14:07,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:14:07,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:07,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:14:07,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:14:07,270 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) [2021-06-05 17:14:08,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:08,348 INFO L93 Difference]: Finished difference Result 4730 states and 15787 transitions. [2021-06-05 17:14:08,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 17:14:08,348 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:08,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:08,355 INFO L225 Difference]: With dead ends: 4730 [2021-06-05 17:14:08,355 INFO L226 Difference]: Without dead ends: 4670 [2021-06-05 17:14:08,355 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 706.2ms TimeCoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:14:08,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2021-06-05 17:14:08,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 4304. [2021-06-05 17:14:08,411 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) [2021-06-05 17:14:08,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4304 states to 4304 states and 14546 transitions. [2021-06-05 17:14:08,419 INFO L78 Accepts]: Start accepts. Automaton has 4304 states and 14546 transitions. Word has length 39 [2021-06-05 17:14:08,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:08,419 INFO L482 AbstractCegarLoop]: Abstraction has 4304 states and 14546 transitions. [2021-06-05 17:14:08,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:08,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4304 states and 14546 transitions. [2021-06-05 17:14:08,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:08,423 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:08,423 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:08,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-06-05 17:14:08,424 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:08,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:08,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1841369896, now seen corresponding path program 195 times [2021-06-05 17:14:08,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:08,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210003775] [2021-06-05 17:14:08,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:08,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:08,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210003775] [2021-06-05 17:14:08,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210003775] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:08,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:08,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 17:14:08,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119823084] [2021-06-05 17:14:08,588 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:14:08,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:08,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:14:08,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:14:08,589 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) [2021-06-05 17:14:09,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:09,508 INFO L93 Difference]: Finished difference Result 4698 states and 15727 transitions. [2021-06-05 17:14:09,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 17:14:09,509 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 [2021-06-05 17:14:09,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:09,516 INFO L225 Difference]: With dead ends: 4698 [2021-06-05 17:14:09,516 INFO L226 Difference]: Without dead ends: 4622 [2021-06-05 17:14:09,516 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 584.1ms TimeCoverageRelationStatistics Valid=177, Invalid=1545, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 17:14:09,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2021-06-05 17:14:09,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 4312. [2021-06-05 17:14:09,567 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) [2021-06-05 17:14:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 14562 transitions. [2021-06-05 17:14:09,574 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 14562 transitions. Word has length 39 [2021-06-05 17:14:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:09,574 INFO L482 AbstractCegarLoop]: Abstraction has 4312 states and 14562 transitions. [2021-06-05 17:14:09,574 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) [2021-06-05 17:14:09,574 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 14562 transitions. [2021-06-05 17:14:09,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:09,579 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:09,579 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:09,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-06-05 17:14:09,579 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:09,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:09,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1435543788, now seen corresponding path program 196 times [2021-06-05 17:14:09,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:09,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419926576] [2021-06-05 17:14:09,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:09,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:09,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:09,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419926576] [2021-06-05 17:14:09,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419926576] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:09,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:09,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:14:09,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120533762] [2021-06-05 17:14:09,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:14:09,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:09,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:14:09,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:14:09,750 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) [2021-06-05 17:14:10,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:10,770 INFO L93 Difference]: Finished difference Result 4680 states and 15673 transitions. [2021-06-05 17:14:10,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 17:14:10,771 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 [2021-06-05 17:14:10,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:10,778 INFO L225 Difference]: With dead ends: 4680 [2021-06-05 17:14:10,778 INFO L226 Difference]: Without dead ends: 4610 [2021-06-05 17:14:10,778 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 659.2ms TimeCoverageRelationStatistics Valid=193, Invalid=1787, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 17:14:10,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2021-06-05 17:14:10,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4300. [2021-06-05 17:14:10,827 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) [2021-06-05 17:14:10,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14534 transitions. [2021-06-05 17:14:10,834 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14534 transitions. Word has length 39 [2021-06-05 17:14:10,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:10,834 INFO L482 AbstractCegarLoop]: Abstraction has 4300 states and 14534 transitions. [2021-06-05 17:14:10,834 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:10,834 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14534 transitions. [2021-06-05 17:14:10,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:10,839 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:10,839 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:10,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-06-05 17:14:10,839 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:10,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:10,839 INFO L82 PathProgramCache]: Analyzing trace with hash -2013239828, now seen corresponding path program 197 times [2021-06-05 17:14:10,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:10,839 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788027081] [2021-06-05 17:14:10,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:11,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:11,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788027081] [2021-06-05 17:14:11,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788027081] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:11,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:11,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:14:11,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511990207] [2021-06-05 17:14:11,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:14:11,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:11,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:14:11,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:14:11,004 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) [2021-06-05 17:14:12,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:12,831 INFO L93 Difference]: Finished difference Result 6858 states and 23172 transitions. [2021-06-05 17:14:12,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 17:14:12,832 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:12,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:12,842 INFO L225 Difference]: With dead ends: 6858 [2021-06-05 17:14:12,842 INFO L226 Difference]: Without dead ends: 6815 [2021-06-05 17:14:12,843 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 1113.3ms TimeCoverageRelationStatistics Valid=380, Invalid=3910, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 17:14:12,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6815 states. [2021-06-05 17:14:12,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6815 to 4326. [2021-06-05 17:14:12,901 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) [2021-06-05 17:14:12,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 14617 transitions. [2021-06-05 17:14:12,908 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 14617 transitions. Word has length 39 [2021-06-05 17:14:12,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:12,908 INFO L482 AbstractCegarLoop]: Abstraction has 4326 states and 14617 transitions. [2021-06-05 17:14:12,908 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) [2021-06-05 17:14:12,908 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 14617 transitions. [2021-06-05 17:14:12,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:12,912 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:12,912 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:12,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-06-05 17:14:12,912 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:12,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:12,913 INFO L82 PathProgramCache]: Analyzing trace with hash 501129166, now seen corresponding path program 198 times [2021-06-05 17:14:12,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:12,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694829393] [2021-06-05 17:14:12,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:13,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:13,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694829393] [2021-06-05 17:14:13,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694829393] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:13,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:13,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:14:13,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417544630] [2021-06-05 17:14:13,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:14:13,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:13,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:14:13,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:14:13,076 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) [2021-06-05 17:14:15,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:15,233 INFO L93 Difference]: Finished difference Result 7715 states and 26114 transitions. [2021-06-05 17:14:15,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-05 17:14:15,233 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:15,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:15,246 INFO L225 Difference]: With dead ends: 7715 [2021-06-05 17:14:15,246 INFO L226 Difference]: Without dead ends: 7663 [2021-06-05 17:14:15,247 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1544 ImplicationChecksByTransitivity, 1291.6ms TimeCoverageRelationStatistics Valid=429, Invalid=4827, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 17:14:15,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7663 states. [2021-06-05 17:14:15,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7663 to 4300. [2021-06-05 17:14:15,317 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) [2021-06-05 17:14:15,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14534 transitions. [2021-06-05 17:14:15,324 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14534 transitions. Word has length 39 [2021-06-05 17:14:15,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:15,324 INFO L482 AbstractCegarLoop]: Abstraction has 4300 states and 14534 transitions. [2021-06-05 17:14:15,324 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:15,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14534 transitions. [2021-06-05 17:14:15,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:15,329 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:15,329 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:15,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-06-05 17:14:15,329 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:15,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:15,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1094756258, now seen corresponding path program 199 times [2021-06-05 17:14:15,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:15,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591072255] [2021-06-05 17:14:15,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:15,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:15,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:15,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591072255] [2021-06-05 17:14:15,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591072255] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:15,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:15,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:14:15,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978516974] [2021-06-05 17:14:15,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:14:15,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:15,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:14:15,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:14:15,496 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) [2021-06-05 17:14:16,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:16,807 INFO L93 Difference]: Finished difference Result 6351 states and 21238 transitions. [2021-06-05 17:14:16,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 17:14:16,807 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:16,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:16,818 INFO L225 Difference]: With dead ends: 6351 [2021-06-05 17:14:16,818 INFO L226 Difference]: Without dead ends: 6296 [2021-06-05 17:14:16,818 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 709.4ms TimeCoverageRelationStatistics Valid=232, Invalid=2120, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 17:14:16,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6296 states. [2021-06-05 17:14:16,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6296 to 4320. [2021-06-05 17:14:16,880 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) [2021-06-05 17:14:16,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4320 states to 4320 states and 14600 transitions. [2021-06-05 17:14:16,887 INFO L78 Accepts]: Start accepts. Automaton has 4320 states and 14600 transitions. Word has length 39 [2021-06-05 17:14:16,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:16,887 INFO L482 AbstractCegarLoop]: Abstraction has 4320 states and 14600 transitions. [2021-06-05 17:14:16,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:16,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4320 states and 14600 transitions. [2021-06-05 17:14:16,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:16,892 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:16,893 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:16,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-06-05 17:14:16,893 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:16,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:16,893 INFO L82 PathProgramCache]: Analyzing trace with hash 77895964, now seen corresponding path program 200 times [2021-06-05 17:14:16,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:16,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034379956] [2021-06-05 17:14:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:17,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:17,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:17,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034379956] [2021-06-05 17:14:17,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034379956] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:17,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:17,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:14:17,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557847329] [2021-06-05 17:14:17,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:14:17,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:17,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:14:17,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:14:17,071 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) [2021-06-05 17:14:18,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:18,731 INFO L93 Difference]: Finished difference Result 7052 states and 23686 transitions. [2021-06-05 17:14:18,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 17:14:18,732 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 [2021-06-05 17:14:18,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:18,743 INFO L225 Difference]: With dead ends: 7052 [2021-06-05 17:14:18,743 INFO L226 Difference]: Without dead ends: 6992 [2021-06-05 17:14:18,743 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 929.3ms TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 17:14:18,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6992 states. [2021-06-05 17:14:18,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6992 to 4318. [2021-06-05 17:14:18,826 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) [2021-06-05 17:14:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 14595 transitions. [2021-06-05 17:14:18,833 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 14595 transitions. Word has length 39 [2021-06-05 17:14:18,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:18,833 INFO L482 AbstractCegarLoop]: Abstraction has 4318 states and 14595 transitions. [2021-06-05 17:14:18,833 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:18,833 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 14595 transitions. [2021-06-05 17:14:18,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:18,838 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:18,838 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:18,838 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-06-05 17:14:18,838 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:18,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:18,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1799507638, now seen corresponding path program 201 times [2021-06-05 17:14:18,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:18,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676004280] [2021-06-05 17:14:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:19,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:19,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:19,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676004280] [2021-06-05 17:14:19,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676004280] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:19,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:19,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:14:19,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626210570] [2021-06-05 17:14:19,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:14:19,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:19,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:14:19,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:14:19,010 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) [2021-06-05 17:14:20,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:20,239 INFO L93 Difference]: Finished difference Result 6272 states and 21064 transitions. [2021-06-05 17:14:20,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 17:14:20,239 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:20,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:20,248 INFO L225 Difference]: With dead ends: 6272 [2021-06-05 17:14:20,249 INFO L226 Difference]: Without dead ends: 6181 [2021-06-05 17:14:20,249 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 656.1ms TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:14:20,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6181 states. [2021-06-05 17:14:20,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6181 to 4318. [2021-06-05 17:14:20,307 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) [2021-06-05 17:14:20,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4318 states to 4318 states and 14589 transitions. [2021-06-05 17:14:20,314 INFO L78 Accepts]: Start accepts. Automaton has 4318 states and 14589 transitions. Word has length 39 [2021-06-05 17:14:20,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:20,314 INFO L482 AbstractCegarLoop]: Abstraction has 4318 states and 14589 transitions. [2021-06-05 17:14:20,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:20,314 INFO L276 IsEmpty]: Start isEmpty. Operand 4318 states and 14589 transitions. [2021-06-05 17:14:20,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:20,319 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:20,319 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:20,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-06-05 17:14:20,319 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:20,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:20,319 INFO L82 PathProgramCache]: Analyzing trace with hash 992977452, now seen corresponding path program 202 times [2021-06-05 17:14:20,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:20,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017583771] [2021-06-05 17:14:20,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:20,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:20,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017583771] [2021-06-05 17:14:20,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017583771] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:20,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:20,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:14:20,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375972080] [2021-06-05 17:14:20,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:14:20,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:20,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:14:20,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:14:20,499 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) [2021-06-05 17:14:22,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:22,225 INFO L93 Difference]: Finished difference Result 7142 states and 24051 transitions. [2021-06-05 17:14:22,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 17:14:22,225 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:22,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:22,236 INFO L225 Difference]: With dead ends: 7142 [2021-06-05 17:14:22,237 INFO L226 Difference]: Without dead ends: 7042 [2021-06-05 17:14:22,237 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 954.3ms TimeCoverageRelationStatistics Valid=303, Invalid=3119, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 17:14:22,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7042 states. [2021-06-05 17:14:22,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7042 to 4300. [2021-06-05 17:14:22,298 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) [2021-06-05 17:14:22,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 14528 transitions. [2021-06-05 17:14:22,305 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 14528 transitions. Word has length 39 [2021-06-05 17:14:22,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:22,305 INFO L482 AbstractCegarLoop]: Abstraction has 4300 states and 14528 transitions. [2021-06-05 17:14:22,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:22,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 14528 transitions. [2021-06-05 17:14:22,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:22,309 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:22,309 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:22,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-06-05 17:14:22,310 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:22,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:22,310 INFO L82 PathProgramCache]: Analyzing trace with hash 756352456, now seen corresponding path program 203 times [2021-06-05 17:14:22,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:22,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975663610] [2021-06-05 17:14:22,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:22,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:22,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:22,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975663610] [2021-06-05 17:14:22,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975663610] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:22,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:22,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-06-05 17:14:22,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888874109] [2021-06-05 17:14:22,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 17:14:22,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:22,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 17:14:22,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-06-05 17:14:22,464 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) [2021-06-05 17:14:23,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:23,311 INFO L93 Difference]: Finished difference Result 4629 states and 15530 transitions. [2021-06-05 17:14:23,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 17:14:23,311 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 [2021-06-05 17:14:23,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:23,318 INFO L225 Difference]: With dead ends: 4629 [2021-06-05 17:14:23,318 INFO L226 Difference]: Without dead ends: 4553 [2021-06-05 17:14:23,319 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 527.0ms TimeCoverageRelationStatistics Valid=162, Invalid=1398, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 17:14:23,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4553 states. [2021-06-05 17:14:23,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4553 to 4332. [2021-06-05 17:14:23,366 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) [2021-06-05 17:14:23,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 14616 transitions. [2021-06-05 17:14:23,372 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 14616 transitions. Word has length 39 [2021-06-05 17:14:23,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:23,372 INFO L482 AbstractCegarLoop]: Abstraction has 4332 states and 14616 transitions. [2021-06-05 17:14:23,372 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) [2021-06-05 17:14:23,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 14616 transitions. [2021-06-05 17:14:23,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:23,376 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:23,376 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:23,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-06-05 17:14:23,377 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:23,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:23,377 INFO L82 PathProgramCache]: Analyzing trace with hash -261701156, now seen corresponding path program 204 times [2021-06-05 17:14:23,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:23,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528005271] [2021-06-05 17:14:23,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:23,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:23,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:23,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528005271] [2021-06-05 17:14:23,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528005271] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:23,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:23,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:14:23,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908556140] [2021-06-05 17:14:23,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:14:23,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:23,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:14:23,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:14:23,543 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) [2021-06-05 17:14:24,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:24,485 INFO L93 Difference]: Finished difference Result 4611 states and 15476 transitions. [2021-06-05 17:14:24,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 17:14:24,486 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:24,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:24,493 INFO L225 Difference]: With dead ends: 4611 [2021-06-05 17:14:24,493 INFO L226 Difference]: Without dead ends: 4545 [2021-06-05 17:14:24,493 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 589.0ms TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 17:14:24,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2021-06-05 17:14:24,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 4324. [2021-06-05 17:14:24,541 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) [2021-06-05 17:14:24,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 14592 transitions. [2021-06-05 17:14:24,548 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 14592 transitions. Word has length 39 [2021-06-05 17:14:24,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:24,548 INFO L482 AbstractCegarLoop]: Abstraction has 4324 states and 14592 transitions. [2021-06-05 17:14:24,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:24,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 14592 transitions. [2021-06-05 17:14:24,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:24,552 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:24,553 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:24,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-06-05 17:14:24,553 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:24,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:24,553 INFO L82 PathProgramCache]: Analyzing trace with hash -543966810, now seen corresponding path program 205 times [2021-06-05 17:14:24,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:24,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673538977] [2021-06-05 17:14:24,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:24,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:24,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673538977] [2021-06-05 17:14:24,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673538977] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:24,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:24,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:14:24,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814331746] [2021-06-05 17:14:24,719 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:14:24,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:24,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:14:24,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:14:24,719 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) [2021-06-05 17:14:25,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:25,673 INFO L93 Difference]: Finished difference Result 4632 states and 15529 transitions. [2021-06-05 17:14:25,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 17:14:25,673 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:25,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:25,681 INFO L225 Difference]: With dead ends: 4632 [2021-06-05 17:14:25,681 INFO L226 Difference]: Without dead ends: 4470 [2021-06-05 17:14:25,681 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 600.3ms TimeCoverageRelationStatistics Valid=178, Invalid=1628, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 17:14:25,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2021-06-05 17:14:25,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 4256. [2021-06-05 17:14:25,732 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) [2021-06-05 17:14:25,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 14396 transitions. [2021-06-05 17:14:25,739 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 14396 transitions. Word has length 39 [2021-06-05 17:14:25,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:25,739 INFO L482 AbstractCegarLoop]: Abstraction has 4256 states and 14396 transitions. [2021-06-05 17:14:25,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:25,739 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 14396 transitions. [2021-06-05 17:14:25,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:25,744 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:25,744 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:25,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-06-05 17:14:25,744 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:25,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:25,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1485490904, now seen corresponding path program 206 times [2021-06-05 17:14:25,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:25,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326395913] [2021-06-05 17:14:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:25,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:25,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326395913] [2021-06-05 17:14:25,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326395913] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:25,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:25,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:25,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734860406] [2021-06-05 17:14:25,937 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:25,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:25,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:25,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:25,937 INFO L87 Difference]: Start difference. First operand 4256 states and 14396 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:27,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:27,297 INFO L93 Difference]: Finished difference Result 4789 states and 16030 transitions. [2021-06-05 17:14:27,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 17:14:27,297 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:27,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:27,305 INFO L225 Difference]: With dead ends: 4789 [2021-06-05 17:14:27,305 INFO L226 Difference]: Without dead ends: 4722 [2021-06-05 17:14:27,305 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 834.3ms TimeCoverageRelationStatistics Valid=263, Invalid=2493, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 17:14:27,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4722 states. [2021-06-05 17:14:27,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4722 to 4264. [2021-06-05 17:14:27,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4263 states have (on average 3.3807178043631247) internal successors, (14412), 4263 states have internal predecessors, (14412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:27,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 14412 transitions. [2021-06-05 17:14:27,360 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 14412 transitions. Word has length 39 [2021-06-05 17:14:27,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:27,360 INFO L482 AbstractCegarLoop]: Abstraction has 4264 states and 14412 transitions. [2021-06-05 17:14:27,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:27,360 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 14412 transitions. [2021-06-05 17:14:27,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:27,365 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:27,365 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:27,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-06-05 17:14:27,365 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:27,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:27,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1354896056, now seen corresponding path program 207 times [2021-06-05 17:14:27,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:27,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20055714] [2021-06-05 17:14:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:27,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:27,564 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:27,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20055714] [2021-06-05 17:14:27,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20055714] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:27,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:27,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:27,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244491475] [2021-06-05 17:14:27,565 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:27,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:27,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:27,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:27,565 INFO L87 Difference]: Start difference. First operand 4264 states and 14412 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:28,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:28,824 INFO L93 Difference]: Finished difference Result 4721 states and 15834 transitions. [2021-06-05 17:14:28,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 17:14:28,825 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:28,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:28,832 INFO L225 Difference]: With dead ends: 4721 [2021-06-05 17:14:28,832 INFO L226 Difference]: Without dead ends: 4658 [2021-06-05 17:14:28,832 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 801.3ms TimeCoverageRelationStatistics Valid=264, Invalid=2388, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 17:14:28,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-06-05 17:14:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 4256. [2021-06-05 17:14:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 3.3823736780258518) internal successors, (14392), 4255 states have internal predecessors, (14392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:28,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 14392 transitions. [2021-06-05 17:14:28,886 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 14392 transitions. Word has length 39 [2021-06-05 17:14:28,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:28,887 INFO L482 AbstractCegarLoop]: Abstraction has 4256 states and 14392 transitions. [2021-06-05 17:14:28,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:28,887 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 14392 transitions. [2021-06-05 17:14:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:28,891 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:28,891 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:28,891 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-06-05 17:14:28,891 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:28,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:28,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1219217464, now seen corresponding path program 208 times [2021-06-05 17:14:28,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:28,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283125561] [2021-06-05 17:14:28,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:29,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:29,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283125561] [2021-06-05 17:14:29,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283125561] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:29,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:29,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:29,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700182256] [2021-06-05 17:14:29,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:29,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:29,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:29,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:29,106 INFO L87 Difference]: Start difference. First operand 4256 states and 14392 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:30,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:30,928 INFO L93 Difference]: Finished difference Result 4967 states and 16467 transitions. [2021-06-05 17:14:30,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 17:14:30,928 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:30,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:30,935 INFO L225 Difference]: With dead ends: 4967 [2021-06-05 17:14:30,935 INFO L226 Difference]: Without dead ends: 4924 [2021-06-05 17:14:30,936 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 1200.6ms TimeCoverageRelationStatistics Valid=386, Invalid=4036, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 17:14:30,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4924 states. [2021-06-05 17:14:30,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4924 to 4264. [2021-06-05 17:14:30,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4264 states, 4263 states have (on average 3.3807178043631247) internal successors, (14412), 4263 states have internal predecessors, (14412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:30,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4264 states to 4264 states and 14412 transitions. [2021-06-05 17:14:30,996 INFO L78 Accepts]: Start accepts. Automaton has 4264 states and 14412 transitions. Word has length 39 [2021-06-05 17:14:30,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:30,996 INFO L482 AbstractCegarLoop]: Abstraction has 4264 states and 14412 transitions. [2021-06-05 17:14:30,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:30,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4264 states and 14412 transitions. [2021-06-05 17:14:31,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:31,001 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:31,001 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:31,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-06-05 17:14:31,001 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:31,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:31,001 INFO L82 PathProgramCache]: Analyzing trace with hash -561380838, now seen corresponding path program 209 times [2021-06-05 17:14:31,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:31,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400013277] [2021-06-05 17:14:31,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:31,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:31,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400013277] [2021-06-05 17:14:31,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400013277] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:31,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:31,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:31,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310780890] [2021-06-05 17:14:31,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:31,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:31,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:31,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:31,187 INFO L87 Difference]: Start difference. First operand 4264 states and 14412 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:32,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:32,986 INFO L93 Difference]: Finished difference Result 4923 states and 16349 transitions. [2021-06-05 17:14:32,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 17:14:32,986 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:32,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:32,993 INFO L225 Difference]: With dead ends: 4923 [2021-06-05 17:14:32,993 INFO L226 Difference]: Without dead ends: 4871 [2021-06-05 17:14:32,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 1158.3ms TimeCoverageRelationStatistics Valid=376, Invalid=3914, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 17:14:33,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2021-06-05 17:14:33,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4256. [2021-06-05 17:14:33,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4256 states, 4255 states have (on average 3.3823736780258518) internal successors, (14392), 4255 states have internal predecessors, (14392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4256 states to 4256 states and 14392 transitions. [2021-06-05 17:14:33,048 INFO L78 Accepts]: Start accepts. Automaton has 4256 states and 14392 transitions. Word has length 39 [2021-06-05 17:14:33,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:33,048 INFO L482 AbstractCegarLoop]: Abstraction has 4256 states and 14392 transitions. [2021-06-05 17:14:33,048 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:33,048 INFO L276 IsEmpty]: Start isEmpty. Operand 4256 states and 14392 transitions. [2021-06-05 17:14:33,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:33,052 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:33,052 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:33,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-06-05 17:14:33,052 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:33,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:33,053 INFO L82 PathProgramCache]: Analyzing trace with hash 2137701034, now seen corresponding path program 210 times [2021-06-05 17:14:33,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:33,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643270840] [2021-06-05 17:14:33,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:33,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:33,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643270840] [2021-06-05 17:14:33,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643270840] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:33,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:33,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:33,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351662866] [2021-06-05 17:14:33,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:33,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:33,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:33,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:33,237 INFO L87 Difference]: Start difference. First operand 4256 states and 14392 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:34,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:34,610 INFO L93 Difference]: Finished difference Result 4849 states and 16108 transitions. [2021-06-05 17:14:34,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 17:14:34,611 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:34,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:34,618 INFO L225 Difference]: With dead ends: 4849 [2021-06-05 17:14:34,618 INFO L226 Difference]: Without dead ends: 4794 [2021-06-05 17:14:34,619 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 882.6ms TimeCoverageRelationStatistics Valid=298, Invalid=2672, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 17:14:34,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4794 states. [2021-06-05 17:14:34,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4794 to 4258. [2021-06-05 17:14:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4258 states, 4257 states have (on average 3.38148931172187) internal successors, (14395), 4257 states have internal predecessors, (14395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:34,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4258 states to 4258 states and 14395 transitions. [2021-06-05 17:14:34,697 INFO L78 Accepts]: Start accepts. Automaton has 4258 states and 14395 transitions. Word has length 39 [2021-06-05 17:14:34,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:34,697 INFO L482 AbstractCegarLoop]: Abstraction has 4258 states and 14395 transitions. [2021-06-05 17:14:34,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:34,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4258 states and 14395 transitions. [2021-06-05 17:14:34,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:34,702 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:34,702 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:34,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-06-05 17:14:34,702 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:34,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:34,703 INFO L82 PathProgramCache]: Analyzing trace with hash -984614040, now seen corresponding path program 211 times [2021-06-05 17:14:34,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:34,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606212480] [2021-06-05 17:14:34,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:34,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:34,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606212480] [2021-06-05 17:14:34,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606212480] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:34,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:34,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:34,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318040821] [2021-06-05 17:14:34,891 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:34,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:34,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:34,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:34,892 INFO L87 Difference]: Start difference. First operand 4258 states and 14395 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:36,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:36,165 INFO L93 Difference]: Finished difference Result 4784 states and 15956 transitions. [2021-06-05 17:14:36,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 17:14:36,165 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:36,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:36,173 INFO L225 Difference]: With dead ends: 4784 [2021-06-05 17:14:36,173 INFO L226 Difference]: Without dead ends: 4738 [2021-06-05 17:14:36,173 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 802.5ms TimeCoverageRelationStatistics Valid=269, Invalid=2383, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 17:14:36,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4738 states. [2021-06-05 17:14:36,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4738 to 4262. [2021-06-05 17:14:36,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4262 states, 4261 states have (on average 3.3801924430884767) internal successors, (14403), 4261 states have internal predecessors, (14403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4262 states to 4262 states and 14403 transitions. [2021-06-05 17:14:36,232 INFO L78 Accepts]: Start accepts. Automaton has 4262 states and 14403 transitions. Word has length 39 [2021-06-05 17:14:36,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:36,232 INFO L482 AbstractCegarLoop]: Abstraction has 4262 states and 14403 transitions. [2021-06-05 17:14:36,232 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) [2021-06-05 17:14:36,232 INFO L276 IsEmpty]: Start isEmpty. Operand 4262 states and 14403 transitions. [2021-06-05 17:14:36,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:36,237 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:36,237 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:36,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-06-05 17:14:36,237 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:36,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:36,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1232080202, now seen corresponding path program 212 times [2021-06-05 17:14:36,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:36,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524532007] [2021-06-05 17:14:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:36,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:36,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524532007] [2021-06-05 17:14:36,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524532007] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:36,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:36,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:36,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572950056] [2021-06-05 17:14:36,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:36,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:36,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:36,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:36,445 INFO L87 Difference]: Start difference. First operand 4262 states and 14403 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:37,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:37,807 INFO L93 Difference]: Finished difference Result 4744 states and 15867 transitions. [2021-06-05 17:14:37,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 17:14:37,807 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:37,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:37,814 INFO L225 Difference]: With dead ends: 4744 [2021-06-05 17:14:37,815 INFO L226 Difference]: Without dead ends: 4695 [2021-06-05 17:14:37,815 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 894.9ms TimeCoverageRelationStatistics Valid=282, Invalid=2474, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 17:14:37,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4695 states. [2021-06-05 17:14:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4695 to 4252. [2021-06-05 17:14:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4252 states, 4251 states have (on average 3.3832039520112915) internal successors, (14382), 4251 states have internal predecessors, (14382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:37,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4252 states to 4252 states and 14382 transitions. [2021-06-05 17:14:37,870 INFO L78 Accepts]: Start accepts. Automaton has 4252 states and 14382 transitions. Word has length 39 [2021-06-05 17:14:37,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:37,870 INFO L482 AbstractCegarLoop]: Abstraction has 4252 states and 14382 transitions. [2021-06-05 17:14:37,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:37,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4252 states and 14382 transitions. [2021-06-05 17:14:37,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:37,874 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:37,874 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:37,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-06-05 17:14:37,874 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:37,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:37,875 INFO L82 PathProgramCache]: Analyzing trace with hash 306795320, now seen corresponding path program 213 times [2021-06-05 17:14:37,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:37,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721709671] [2021-06-05 17:14:37,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:38,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:38,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:38,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721709671] [2021-06-05 17:14:38,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721709671] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:38,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:38,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:38,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989903881] [2021-06-05 17:14:38,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:38,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:38,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:38,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:38,063 INFO L87 Difference]: Start difference. First operand 4252 states and 14382 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:39,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:39,340 INFO L93 Difference]: Finished difference Result 4761 states and 15970 transitions. [2021-06-05 17:14:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:14:39,340 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:39,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:39,347 INFO L225 Difference]: With dead ends: 4761 [2021-06-05 17:14:39,347 INFO L226 Difference]: Without dead ends: 4694 [2021-06-05 17:14:39,348 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 737.4ms TimeCoverageRelationStatistics Valid=226, Invalid=2224, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 17:14:39,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2021-06-05 17:14:39,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4308. [2021-06-05 17:14:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 4307 states have (on average 3.3768284188530298) internal successors, (14544), 4307 states have internal predecessors, (14544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:39,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 14544 transitions. [2021-06-05 17:14:39,402 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 14544 transitions. Word has length 39 [2021-06-05 17:14:39,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:39,402 INFO L482 AbstractCegarLoop]: Abstraction has 4308 states and 14544 transitions. [2021-06-05 17:14:39,402 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) [2021-06-05 17:14:39,402 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 14544 transitions. [2021-06-05 17:14:39,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:39,406 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:39,406 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:39,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-06-05 17:14:39,406 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:39,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:39,407 INFO L82 PathProgramCache]: Analyzing trace with hash 176200472, now seen corresponding path program 214 times [2021-06-05 17:14:39,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:39,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710589530] [2021-06-05 17:14:39,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:39,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:39,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710589530] [2021-06-05 17:14:39,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710589530] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:39,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:39,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:39,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672850010] [2021-06-05 17:14:39,590 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:39,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:39,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:39,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:39,590 INFO L87 Difference]: Start difference. First operand 4308 states and 14544 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:40,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:40,833 INFO L93 Difference]: Finished difference Result 4757 states and 15954 transitions. [2021-06-05 17:14:40,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 17:14:40,833 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:40,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:40,840 INFO L225 Difference]: With dead ends: 4757 [2021-06-05 17:14:40,840 INFO L226 Difference]: Without dead ends: 4694 [2021-06-05 17:14:40,841 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 730.8ms TimeCoverageRelationStatistics Valid=230, Invalid=2122, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 17:14:40,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2021-06-05 17:14:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4340. [2021-06-05 17:14:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4340 states, 4339 states have (on average 3.3712837059230236) internal successors, (14628), 4339 states have internal predecessors, (14628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:40,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4340 states to 4340 states and 14628 transitions. [2021-06-05 17:14:40,894 INFO L78 Accepts]: Start accepts. Automaton has 4340 states and 14628 transitions. Word has length 39 [2021-06-05 17:14:40,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:40,894 INFO L482 AbstractCegarLoop]: Abstraction has 4340 states and 14628 transitions. [2021-06-05 17:14:40,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:40,895 INFO L276 IsEmpty]: Start isEmpty. Operand 4340 states and 14628 transitions. [2021-06-05 17:14:40,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:40,899 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:40,899 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:40,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-06-05 17:14:40,899 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:40,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:40,899 INFO L82 PathProgramCache]: Analyzing trace with hash -353699976, now seen corresponding path program 215 times [2021-06-05 17:14:40,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:40,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976432672] [2021-06-05 17:14:40,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:41,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:41,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:41,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976432672] [2021-06-05 17:14:41,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976432672] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:41,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:41,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:41,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356330166] [2021-06-05 17:14:41,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:41,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:41,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:41,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:41,082 INFO L87 Difference]: Start difference. First operand 4340 states and 14628 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:42,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:42,331 INFO L93 Difference]: Finished difference Result 4781 states and 16014 transitions. [2021-06-05 17:14:42,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 17:14:42,332 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:42,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:42,339 INFO L225 Difference]: With dead ends: 4781 [2021-06-05 17:14:42,339 INFO L226 Difference]: Without dead ends: 4658 [2021-06-05 17:14:42,339 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 745.1ms TimeCoverageRelationStatistics Valid=238, Invalid=2212, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 17:14:42,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-06-05 17:14:42,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 4292. [2021-06-05 17:14:42,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4292 states, 4291 states have (on average 3.377767420181776) internal successors, (14494), 4291 states have internal predecessors, (14494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:42,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 14494 transitions. [2021-06-05 17:14:42,393 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 14494 transitions. Word has length 39 [2021-06-05 17:14:42,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:42,393 INFO L482 AbstractCegarLoop]: Abstraction has 4292 states and 14494 transitions. [2021-06-05 17:14:42,393 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) [2021-06-05 17:14:42,393 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 14494 transitions. [2021-06-05 17:14:42,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:42,398 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:42,398 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:42,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-06-05 17:14:42,398 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:42,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:42,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1072111146, now seen corresponding path program 216 times [2021-06-05 17:14:42,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:42,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593932703] [2021-06-05 17:14:42,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:42,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:42,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593932703] [2021-06-05 17:14:42,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593932703] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:42,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:42,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:42,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353583977] [2021-06-05 17:14:42,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:42,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:42,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:42,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:42,607 INFO L87 Difference]: Start difference. First operand 4292 states and 14494 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:44,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:44,890 INFO L93 Difference]: Finished difference Result 7281 states and 24446 transitions. [2021-06-05 17:14:44,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 17:14:44,890 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:44,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:44,901 INFO L225 Difference]: With dead ends: 7281 [2021-06-05 17:14:44,901 INFO L226 Difference]: Without dead ends: 7175 [2021-06-05 17:14:44,902 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 1381.1ms TimeCoverageRelationStatistics Valid=466, Invalid=5234, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 17:14:44,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7175 states. [2021-06-05 17:14:44,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7175 to 4357. [2021-06-05 17:14:44,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4357 states, 4356 states have (on average 3.3732782369146004) internal successors, (14694), 4356 states have internal predecessors, (14694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:44,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4357 states to 4357 states and 14694 transitions. [2021-06-05 17:14:44,970 INFO L78 Accepts]: Start accepts. Automaton has 4357 states and 14694 transitions. Word has length 39 [2021-06-05 17:14:44,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:44,971 INFO L482 AbstractCegarLoop]: Abstraction has 4357 states and 14694 transitions. [2021-06-05 17:14:44,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:44,971 INFO L276 IsEmpty]: Start isEmpty. Operand 4357 states and 14694 transitions. [2021-06-05 17:14:44,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:44,975 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:44,975 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:44,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-06-05 17:14:44,975 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:44,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:44,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1442257848, now seen corresponding path program 217 times [2021-06-05 17:14:44,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:44,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120813803] [2021-06-05 17:14:44,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:45,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:45,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:45,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120813803] [2021-06-05 17:14:45,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120813803] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:45,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:45,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:45,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273311413] [2021-06-05 17:14:45,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:45,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:45,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:45,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:45,185 INFO L87 Difference]: Start difference. First operand 4357 states and 14694 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:47,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:47,846 INFO L93 Difference]: Finished difference Result 8067 states and 27212 transitions. [2021-06-05 17:14:47,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-06-05 17:14:47,847 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:47,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:47,860 INFO L225 Difference]: With dead ends: 8067 [2021-06-05 17:14:47,860 INFO L226 Difference]: Without dead ends: 8015 [2021-06-05 17:14:47,861 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2140 ImplicationChecksByTransitivity, 1578.5ms TimeCoverageRelationStatistics Valid=521, Invalid=6451, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 17:14:47,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8015 states. [2021-06-05 17:14:47,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8015 to 4327. [2021-06-05 17:14:47,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4327 states, 4326 states have (on average 3.3747110494683312) internal successors, (14599), 4326 states have internal predecessors, (14599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:47,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4327 states to 4327 states and 14599 transitions. [2021-06-05 17:14:47,973 INFO L78 Accepts]: Start accepts. Automaton has 4327 states and 14599 transitions. Word has length 39 [2021-06-05 17:14:47,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:47,973 INFO L482 AbstractCegarLoop]: Abstraction has 4327 states and 14599 transitions. [2021-06-05 17:14:47,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:47,973 INFO L276 IsEmpty]: Start isEmpty. Operand 4327 states and 14599 transitions. [2021-06-05 17:14:47,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:47,977 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:47,978 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:47,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-06-05 17:14:47,978 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:47,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:47,978 INFO L82 PathProgramCache]: Analyzing trace with hash -153627576, now seen corresponding path program 218 times [2021-06-05 17:14:47,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:47,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088304061] [2021-06-05 17:14:47,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:48,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:48,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:48,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088304061] [2021-06-05 17:14:48,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088304061] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:48,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:48,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:48,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413416049] [2021-06-05 17:14:48,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:48,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:48,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:48,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:48,188 INFO L87 Difference]: Start difference. First operand 4327 states and 14599 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:49,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:49,821 INFO L93 Difference]: Finished difference Result 6643 states and 22162 transitions. [2021-06-05 17:14:49,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 17:14:49,821 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:49,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:49,832 INFO L225 Difference]: With dead ends: 6643 [2021-06-05 17:14:49,832 INFO L226 Difference]: Without dead ends: 6588 [2021-06-05 17:14:49,832 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 939.5ms TimeCoverageRelationStatistics Valid=319, Invalid=2987, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 17:14:49,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6588 states. [2021-06-05 17:14:49,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6588 to 4361. [2021-06-05 17:14:49,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4361 states, 4360 states have (on average 3.375) internal successors, (14715), 4360 states have internal predecessors, (14715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:49,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4361 states to 4361 states and 14715 transitions. [2021-06-05 17:14:49,896 INFO L78 Accepts]: Start accepts. Automaton has 4361 states and 14715 transitions. Word has length 39 [2021-06-05 17:14:49,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:49,896 INFO L482 AbstractCegarLoop]: Abstraction has 4361 states and 14715 transitions. [2021-06-05 17:14:49,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:49,896 INFO L276 IsEmpty]: Start isEmpty. Operand 4361 states and 14715 transitions. [2021-06-05 17:14:49,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:49,900 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:49,900 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:49,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-06-05 17:14:49,900 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:49,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:49,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1019024646, now seen corresponding path program 219 times [2021-06-05 17:14:49,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:49,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926907488] [2021-06-05 17:14:49,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:50,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:50,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926907488] [2021-06-05 17:14:50,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926907488] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:50,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:50,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:50,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496509409] [2021-06-05 17:14:50,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:50,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:50,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:50,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:50,114 INFO L87 Difference]: Start difference. First operand 4361 states and 14715 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:52,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:52,017 INFO L93 Difference]: Finished difference Result 7356 states and 24634 transitions. [2021-06-05 17:14:52,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 17:14:52,018 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:52,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:52,028 INFO L225 Difference]: With dead ends: 7356 [2021-06-05 17:14:52,029 INFO L226 Difference]: Without dead ends: 7296 [2021-06-05 17:14:52,029 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 1061.2ms TimeCoverageRelationStatistics Valid=353, Invalid=3679, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 17:14:52,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7296 states. [2021-06-05 17:14:52,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7296 to 4359. [2021-06-05 17:14:52,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 3.375401560348784) internal successors, (14710), 4358 states have internal predecessors, (14710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:52,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 14710 transitions. [2021-06-05 17:14:52,102 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 14710 transitions. Word has length 39 [2021-06-05 17:14:52,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:52,102 INFO L482 AbstractCegarLoop]: Abstraction has 4359 states and 14710 transitions. [2021-06-05 17:14:52,102 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) [2021-06-05 17:14:52,102 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 14710 transitions. [2021-06-05 17:14:52,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:52,107 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:52,107 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:52,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-06-05 17:14:52,107 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:52,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:52,108 INFO L82 PathProgramCache]: Analyzing trace with hash -858378956, now seen corresponding path program 220 times [2021-06-05 17:14:52,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:52,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701784276] [2021-06-05 17:14:52,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:52,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:52,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701784276] [2021-06-05 17:14:52,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701784276] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:52,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:52,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:52,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000658997] [2021-06-05 17:14:52,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:52,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:52,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:52,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:52,290 INFO L87 Difference]: Start difference. First operand 4359 states and 14710 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:53,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:53,856 INFO L93 Difference]: Finished difference Result 6612 states and 22116 transitions. [2021-06-05 17:14:53,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 17:14:53,856 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:53,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:53,867 INFO L225 Difference]: With dead ends: 6612 [2021-06-05 17:14:53,867 INFO L226 Difference]: Without dead ends: 6521 [2021-06-05 17:14:53,867 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 862.8ms TimeCoverageRelationStatistics Valid=300, Invalid=2892, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 17:14:53,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6521 states. [2021-06-05 17:14:53,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6521 to 4359. [2021-06-05 17:14:53,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 3.3740247820100966) internal successors, (14704), 4358 states have internal predecessors, (14704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:53,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 14704 transitions. [2021-06-05 17:14:53,931 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 14704 transitions. Word has length 39 [2021-06-05 17:14:53,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:53,931 INFO L482 AbstractCegarLoop]: Abstraction has 4359 states and 14704 transitions. [2021-06-05 17:14:53,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:53,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 14704 transitions. [2021-06-05 17:14:53,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:53,936 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:53,936 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:53,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-06-05 17:14:53,936 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:53,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:53,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1934106134, now seen corresponding path program 221 times [2021-06-05 17:14:53,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:53,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46864030] [2021-06-05 17:14:53,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:54,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:54,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46864030] [2021-06-05 17:14:54,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46864030] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:54,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:54,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:54,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778015438] [2021-06-05 17:14:54,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:54,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:54,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:54,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:54,120 INFO L87 Difference]: Start difference. First operand 4359 states and 14704 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:56,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:56,074 INFO L93 Difference]: Finished difference Result 7445 states and 24958 transitions. [2021-06-05 17:14:56,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 17:14:56,074 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 [2021-06-05 17:14:56,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:56,112 INFO L225 Difference]: With dead ends: 7445 [2021-06-05 17:14:56,112 INFO L226 Difference]: Without dead ends: 7329 [2021-06-05 17:14:56,113 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 1034.9ms TimeCoverageRelationStatistics Valid=338, Invalid=3694, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 17:14:56,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7329 states. [2021-06-05 17:14:56,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7329 to 4321. [2021-06-05 17:14:56,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4321 states, 4320 states have (on average 3.3784722222222223) internal successors, (14595), 4320 states have internal predecessors, (14595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 14595 transitions. [2021-06-05 17:14:56,178 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 14595 transitions. Word has length 39 [2021-06-05 17:14:56,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:56,178 INFO L482 AbstractCegarLoop]: Abstraction has 4321 states and 14595 transitions. [2021-06-05 17:14:56,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:56,178 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 14595 transitions. [2021-06-05 17:14:56,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:56,183 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:56,183 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:56,183 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-06-05 17:14:56,183 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:56,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:56,183 INFO L82 PathProgramCache]: Analyzing trace with hash 291247450, now seen corresponding path program 222 times [2021-06-05 17:14:56,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:56,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774122170] [2021-06-05 17:14:56,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:56,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:56,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:56,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774122170] [2021-06-05 17:14:56,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774122170] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:56,368 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:56,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:56,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107325379] [2021-06-05 17:14:56,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:56,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:56,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:56,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:56,369 INFO L87 Difference]: Start difference. First operand 4321 states and 14595 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:57,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:14:57,928 INFO L93 Difference]: Finished difference Result 4939 states and 16469 transitions. [2021-06-05 17:14:57,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 17:14:57,929 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:14:57,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:14:57,936 INFO L225 Difference]: With dead ends: 4939 [2021-06-05 17:14:57,936 INFO L226 Difference]: Without dead ends: 4872 [2021-06-05 17:14:57,936 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 1042.5ms TimeCoverageRelationStatistics Valid=339, Invalid=3201, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 17:14:57,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2021-06-05 17:14:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 4347. [2021-06-05 17:14:57,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 4346 states have (on average 3.374597330878969) internal successors, (14666), 4346 states have internal predecessors, (14666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:57,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 14666 transitions. [2021-06-05 17:14:57,991 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 14666 transitions. Word has length 39 [2021-06-05 17:14:57,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:14:57,992 INFO L482 AbstractCegarLoop]: Abstraction has 4347 states and 14666 transitions. [2021-06-05 17:14:57,992 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:14:57,992 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 14666 transitions. [2021-06-05 17:14:57,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:14:57,997 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:14:57,997 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:14:57,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-06-05 17:14:57,997 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:14:57,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:14:57,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1428368520, now seen corresponding path program 223 times [2021-06-05 17:14:57,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:14:57,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825359912] [2021-06-05 17:14:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:14:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:14:58,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:14:58,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:14:58,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825359912] [2021-06-05 17:14:58,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825359912] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:14:58,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:14:58,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:14:58,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139916541] [2021-06-05 17:14:58,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:14:58,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:14:58,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:14:58,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:14:58,215 INFO L87 Difference]: Start difference. First operand 4347 states and 14666 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:00,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:00,282 INFO L93 Difference]: Finished difference Result 5045 states and 16728 transitions. [2021-06-05 17:15:00,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 17:15:00,282 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:00,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:00,290 INFO L225 Difference]: With dead ends: 5045 [2021-06-05 17:15:00,290 INFO L226 Difference]: Without dead ends: 5002 [2021-06-05 17:15:00,291 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1530 ImplicationChecksByTransitivity, 1445.8ms TimeCoverageRelationStatistics Valid=475, Invalid=4927, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 17:15:00,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5002 states. [2021-06-05 17:15:00,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5002 to 4353. [2021-06-05 17:15:00,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 3.3729319852941178) internal successors, (14679), 4352 states have internal predecessors, (14679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:00,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 14679 transitions. [2021-06-05 17:15:00,347 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 14679 transitions. Word has length 39 [2021-06-05 17:15:00,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:00,348 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 14679 transitions. [2021-06-05 17:15:00,348 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) [2021-06-05 17:15:00,348 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 14679 transitions. [2021-06-05 17:15:00,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:00,352 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:00,352 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:00,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-06-05 17:15:00,352 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:00,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:00,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1086000474, now seen corresponding path program 224 times [2021-06-05 17:15:00,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:00,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798199233] [2021-06-05 17:15:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:00,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:00,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798199233] [2021-06-05 17:15:00,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798199233] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:00,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:00,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:00,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315167873] [2021-06-05 17:15:00,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:00,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:00,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:00,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:00,537 INFO L87 Difference]: Start difference. First operand 4353 states and 14679 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:02,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:02,488 INFO L93 Difference]: Finished difference Result 4984 states and 16578 transitions. [2021-06-05 17:15:02,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 17:15:02,488 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 [2021-06-05 17:15:02,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:02,496 INFO L225 Difference]: With dead ends: 4984 [2021-06-05 17:15:02,496 INFO L226 Difference]: Without dead ends: 4920 [2021-06-05 17:15:02,496 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 1349.0ms TimeCoverageRelationStatistics Valid=432, Invalid=4398, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 17:15:02,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4920 states. [2021-06-05 17:15:02,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4920 to 4335. [2021-06-05 17:15:02,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4335 states, 4334 states have (on average 3.3770189201661283) internal successors, (14636), 4334 states have internal predecessors, (14636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4335 states to 4335 states and 14636 transitions. [2021-06-05 17:15:02,552 INFO L78 Accepts]: Start accepts. Automaton has 4335 states and 14636 transitions. Word has length 39 [2021-06-05 17:15:02,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:02,552 INFO L482 AbstractCegarLoop]: Abstraction has 4335 states and 14636 transitions. [2021-06-05 17:15:02,552 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) [2021-06-05 17:15:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 4335 states and 14636 transitions. [2021-06-05 17:15:02,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:02,557 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:02,557 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:02,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-06-05 17:15:02,557 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:02,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:02,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1706434874, now seen corresponding path program 225 times [2021-06-05 17:15:02,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:02,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449867521] [2021-06-05 17:15:02,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:02,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:02,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:02,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449867521] [2021-06-05 17:15:02,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449867521] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:02,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:02,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:02,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259124250] [2021-06-05 17:15:02,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:02,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:02,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:02,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:02,741 INFO L87 Difference]: Start difference. First operand 4335 states and 14636 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:04,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:04,289 INFO L93 Difference]: Finished difference Result 4927 states and 16427 transitions. [2021-06-05 17:15:04,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 17:15:04,289 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:04,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:04,297 INFO L225 Difference]: With dead ends: 4927 [2021-06-05 17:15:04,297 INFO L226 Difference]: Without dead ends: 4860 [2021-06-05 17:15:04,297 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 997.8ms TimeCoverageRelationStatistics Valid=317, Invalid=3105, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 17:15:04,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4860 states. [2021-06-05 17:15:04,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4860 to 4355. [2021-06-05 17:15:04,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4354 states have (on average 3.377124483233808) internal successors, (14704), 4354 states have internal predecessors, (14704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 14704 transitions. [2021-06-05 17:15:04,356 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 14704 transitions. Word has length 39 [2021-06-05 17:15:04,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:04,356 INFO L482 AbstractCegarLoop]: Abstraction has 4355 states and 14704 transitions. [2021-06-05 17:15:04,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:04,356 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 14704 transitions. [2021-06-05 17:15:04,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:04,360 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:04,361 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:04,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-06-05 17:15:04,361 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:04,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:04,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1575840026, now seen corresponding path program 226 times [2021-06-05 17:15:04,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:04,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916792914] [2021-06-05 17:15:04,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:04,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:04,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916792914] [2021-06-05 17:15:04,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916792914] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:04,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:04,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:04,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990662561] [2021-06-05 17:15:04,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:04,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:04,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:04,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:04,552 INFO L87 Difference]: Start difference. First operand 4355 states and 14704 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:05,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:05,975 INFO L93 Difference]: Finished difference Result 4902 states and 16318 transitions. [2021-06-05 17:15:05,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:15:05,975 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 [2021-06-05 17:15:05,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:05,983 INFO L225 Difference]: With dead ends: 4902 [2021-06-05 17:15:05,983 INFO L226 Difference]: Without dead ends: 4839 [2021-06-05 17:15:05,983 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 960.9ms TimeCoverageRelationStatistics Valid=313, Invalid=2879, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 17:15:05,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4839 states. [2021-06-05 17:15:06,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4839 to 4355. [2021-06-05 17:15:06,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4354 states have (on average 3.3762057877813505) internal successors, (14700), 4354 states have internal predecessors, (14700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:06,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 14700 transitions. [2021-06-05 17:15:06,044 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 14700 transitions. Word has length 39 [2021-06-05 17:15:06,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:06,044 INFO L482 AbstractCegarLoop]: Abstraction has 4355 states and 14700 transitions. [2021-06-05 17:15:06,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:06,044 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 14700 transitions. [2021-06-05 17:15:06,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:06,049 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:06,049 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:06,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-06-05 17:15:06,049 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:06,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:06,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1440161434, now seen corresponding path program 227 times [2021-06-05 17:15:06,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:06,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903091157] [2021-06-05 17:15:06,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:06,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:06,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:06,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903091157] [2021-06-05 17:15:06,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903091157] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:06,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:06,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:06,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496752408] [2021-06-05 17:15:06,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:06,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:06,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:06,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:06,235 INFO L87 Difference]: Start difference. First operand 4355 states and 14700 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:08,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:08,327 INFO L93 Difference]: Finished difference Result 5070 states and 16753 transitions. [2021-06-05 17:15:08,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 17:15:08,327 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 [2021-06-05 17:15:08,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:08,337 INFO L225 Difference]: With dead ends: 5070 [2021-06-05 17:15:08,337 INFO L226 Difference]: Without dead ends: 5027 [2021-06-05 17:15:08,337 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1529 ImplicationChecksByTransitivity, 1416.4ms TimeCoverageRelationStatistics Valid=458, Invalid=4944, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 17:15:08,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2021-06-05 17:15:08,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 4367. [2021-06-05 17:15:08,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4367 states, 4366 states have (on average 3.375171781951443) internal successors, (14736), 4366 states have internal predecessors, (14736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:08,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4367 states to 4367 states and 14736 transitions. [2021-06-05 17:15:08,399 INFO L78 Accepts]: Start accepts. Automaton has 4367 states and 14736 transitions. Word has length 39 [2021-06-05 17:15:08,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:08,399 INFO L482 AbstractCegarLoop]: Abstraction has 4367 states and 14736 transitions. [2021-06-05 17:15:08,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:08,399 INFO L276 IsEmpty]: Start isEmpty. Operand 4367 states and 14736 transitions. [2021-06-05 17:15:08,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:08,404 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:08,404 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:08,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-06-05 17:15:08,404 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:08,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:08,404 INFO L82 PathProgramCache]: Analyzing trace with hash -340436868, now seen corresponding path program 228 times [2021-06-05 17:15:08,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:08,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937311769] [2021-06-05 17:15:08,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:08,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:08,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937311769] [2021-06-05 17:15:08,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937311769] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:08,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:08,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:08,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340018438] [2021-06-05 17:15:08,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:08,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:08,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:08,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:08,585 INFO L87 Difference]: Start difference. First operand 4367 states and 14736 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:10,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:10,592 INFO L93 Difference]: Finished difference Result 5050 states and 16695 transitions. [2021-06-05 17:15:10,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 17:15:10,592 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:10,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:10,600 INFO L225 Difference]: With dead ends: 5050 [2021-06-05 17:15:10,600 INFO L226 Difference]: Without dead ends: 4998 [2021-06-05 17:15:10,601 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 1392.5ms TimeCoverageRelationStatistics Valid=446, Invalid=4810, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 17:15:10,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4998 states. [2021-06-05 17:15:10,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4998 to 4359. [2021-06-05 17:15:10,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 3.3767783386874712) internal successors, (14716), 4358 states have internal predecessors, (14716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:10,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 14716 transitions. [2021-06-05 17:15:10,657 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 14716 transitions. Word has length 39 [2021-06-05 17:15:10,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:10,657 INFO L482 AbstractCegarLoop]: Abstraction has 4359 states and 14716 transitions. [2021-06-05 17:15:10,657 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:10,658 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 14716 transitions. [2021-06-05 17:15:10,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:10,662 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:10,662 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:10,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-06-05 17:15:10,662 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:10,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:10,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1936322292, now seen corresponding path program 229 times [2021-06-05 17:15:10,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:10,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750504572] [2021-06-05 17:15:10,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:10,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:10,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750504572] [2021-06-05 17:15:10,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750504572] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:10,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:10,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:10,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617680619] [2021-06-05 17:15:10,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:10,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:10,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:10,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:10,848 INFO L87 Difference]: Start difference. First operand 4359 states and 14716 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:12,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:12,357 INFO L93 Difference]: Finished difference Result 4980 states and 16485 transitions. [2021-06-05 17:15:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 17:15:12,357 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:12,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:12,365 INFO L225 Difference]: With dead ends: 4980 [2021-06-05 17:15:12,365 INFO L226 Difference]: Without dead ends: 4925 [2021-06-05 17:15:12,366 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 1032.9ms TimeCoverageRelationStatistics Valid=348, Invalid=3192, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 17:15:12,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2021-06-05 17:15:12,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 4361. [2021-06-05 17:15:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4361 states, 4360 states have (on average 3.3759174311926605) internal successors, (14719), 4360 states have internal predecessors, (14719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:12,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4361 states to 4361 states and 14719 transitions. [2021-06-05 17:15:12,448 INFO L78 Accepts]: Start accepts. Automaton has 4361 states and 14719 transitions. Word has length 39 [2021-06-05 17:15:12,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:12,448 INFO L482 AbstractCegarLoop]: Abstraction has 4361 states and 14719 transitions. [2021-06-05 17:15:12,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:12,448 INFO L276 IsEmpty]: Start isEmpty. Operand 4361 states and 14719 transitions. [2021-06-05 17:15:12,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:12,453 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:12,453 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:12,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-06-05 17:15:12,453 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:12,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:12,453 INFO L82 PathProgramCache]: Analyzing trace with hash -763670070, now seen corresponding path program 230 times [2021-06-05 17:15:12,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:12,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327768448] [2021-06-05 17:15:12,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:12,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:12,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327768448] [2021-06-05 17:15:12,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327768448] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:12,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:12,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:12,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478187348] [2021-06-05 17:15:12,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:12,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:12,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:12,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:12,637 INFO L87 Difference]: Start difference. First operand 4361 states and 14719 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:14,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:14,024 INFO L93 Difference]: Finished difference Result 4918 states and 16340 transitions. [2021-06-05 17:15:14,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 17:15:14,025 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:14,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:14,032 INFO L225 Difference]: With dead ends: 4918 [2021-06-05 17:15:14,033 INFO L226 Difference]: Without dead ends: 4872 [2021-06-05 17:15:14,033 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 929.9ms TimeCoverageRelationStatistics Valid=305, Invalid=2775, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:15:14,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2021-06-05 17:15:14,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 4365. [2021-06-05 17:15:14,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4365 states, 4364 states have (on average 3.3746562786434464) internal successors, (14727), 4364 states have internal predecessors, (14727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 14727 transitions. [2021-06-05 17:15:14,097 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 14727 transitions. Word has length 39 [2021-06-05 17:15:14,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:14,097 INFO L482 AbstractCegarLoop]: Abstraction has 4365 states and 14727 transitions. [2021-06-05 17:15:14,097 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) [2021-06-05 17:15:14,097 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 14727 transitions. [2021-06-05 17:15:14,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:14,102 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:14,102 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:14,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-06-05 17:15:14,102 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:14,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:14,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1011136232, now seen corresponding path program 231 times [2021-06-05 17:15:14,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:14,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332441004] [2021-06-05 17:15:14,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:14,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:14,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332441004] [2021-06-05 17:15:14,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332441004] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:14,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:14,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:14,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731948124] [2021-06-05 17:15:14,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:14,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:14,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:14,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:14,286 INFO L87 Difference]: Start difference. First operand 4365 states and 14727 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:15,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:15,809 INFO L93 Difference]: Finished difference Result 4911 states and 16317 transitions. [2021-06-05 17:15:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:15:15,810 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:15,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:15,817 INFO L225 Difference]: With dead ends: 4911 [2021-06-05 17:15:15,817 INFO L226 Difference]: Without dead ends: 4862 [2021-06-05 17:15:15,817 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 1020.4ms TimeCoverageRelationStatistics Valid=328, Invalid=2978, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 17:15:15,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2021-06-05 17:15:15,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 4355. [2021-06-05 17:15:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4354 states have (on average 3.3780431786862657) internal successors, (14708), 4354 states have internal predecessors, (14708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 14708 transitions. [2021-06-05 17:15:15,876 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 14708 transitions. Word has length 39 [2021-06-05 17:15:15,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:15,876 INFO L482 AbstractCegarLoop]: Abstraction has 4355 states and 14708 transitions. [2021-06-05 17:15:15,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:15,877 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 14708 transitions. [2021-06-05 17:15:15,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:15,883 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:15,884 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:15,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-06-05 17:15:15,884 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:15,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:15,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1652205256, now seen corresponding path program 232 times [2021-06-05 17:15:15,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:15,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859491208] [2021-06-05 17:15:15,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:16,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:16,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:16,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859491208] [2021-06-05 17:15:16,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859491208] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:16,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:16,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:16,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983375492] [2021-06-05 17:15:16,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:16,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:16,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:16,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:16,075 INFO L87 Difference]: Start difference. First operand 4355 states and 14708 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:17,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:17,626 INFO L93 Difference]: Finished difference Result 4876 states and 16287 transitions. [2021-06-05 17:15:17,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 17:15:17,626 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:17,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:17,634 INFO L225 Difference]: With dead ends: 4876 [2021-06-05 17:15:17,634 INFO L226 Difference]: Without dead ends: 4809 [2021-06-05 17:15:17,634 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 981.1ms TimeCoverageRelationStatistics Valid=303, Invalid=2889, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 17:15:17,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4809 states. [2021-06-05 17:15:17,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4809 to 4373. [2021-06-05 17:15:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 4372 states have (on average 3.375114364135407) internal successors, (14756), 4372 states have internal predecessors, (14756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:17,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 14756 transitions. [2021-06-05 17:15:17,724 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 14756 transitions. Word has length 39 [2021-06-05 17:15:17,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:17,725 INFO L482 AbstractCegarLoop]: Abstraction has 4373 states and 14756 transitions. [2021-06-05 17:15:17,725 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) [2021-06-05 17:15:17,725 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 14756 transitions. [2021-06-05 17:15:17,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:17,730 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:17,730 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:17,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-06-05 17:15:17,730 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:17,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:17,730 INFO L82 PathProgramCache]: Analyzing trace with hash 923146070, now seen corresponding path program 233 times [2021-06-05 17:15:17,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:17,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756817326] [2021-06-05 17:15:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:17,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:17,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756817326] [2021-06-05 17:15:17,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756817326] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:17,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:17,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:17,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648832884] [2021-06-05 17:15:17,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:17,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:17,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:17,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:17,917 INFO L87 Difference]: Start difference. First operand 4373 states and 14756 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:19,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:19,980 INFO L93 Difference]: Finished difference Result 4981 states and 16542 transitions. [2021-06-05 17:15:19,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 17:15:19,980 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:19,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:19,988 INFO L225 Difference]: With dead ends: 4981 [2021-06-05 17:15:19,988 INFO L226 Difference]: Without dead ends: 4938 [2021-06-05 17:15:19,989 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 1381.8ms TimeCoverageRelationStatistics Valid=439, Invalid=4531, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 17:15:20,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4938 states. [2021-06-05 17:15:20,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4938 to 4379. [2021-06-05 17:15:20,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 4378 states have (on average 3.373458200091366) internal successors, (14769), 4378 states have internal predecessors, (14769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 14769 transitions. [2021-06-05 17:15:20,048 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 14769 transitions. Word has length 39 [2021-06-05 17:15:20,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:20,048 INFO L482 AbstractCegarLoop]: Abstraction has 4379 states and 14769 transitions. [2021-06-05 17:15:20,048 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:20,048 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 14769 transitions. [2021-06-05 17:15:20,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:20,053 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:20,053 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:20,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-06-05 17:15:20,053 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:20,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:20,054 INFO L82 PathProgramCache]: Analyzing trace with hash -857452232, now seen corresponding path program 234 times [2021-06-05 17:15:20,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:20,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194027757] [2021-06-05 17:15:20,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:20,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:20,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194027757] [2021-06-05 17:15:20,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194027757] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:20,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:20,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:20,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921555589] [2021-06-05 17:15:20,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:20,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:20,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:20,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:20,237 INFO L87 Difference]: Start difference. First operand 4379 states and 14769 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:22,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:22,146 INFO L93 Difference]: Finished difference Result 4920 states and 16392 transitions. [2021-06-05 17:15:22,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 17:15:22,146 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:22,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:22,153 INFO L225 Difference]: With dead ends: 4920 [2021-06-05 17:15:22,153 INFO L226 Difference]: Without dead ends: 4856 [2021-06-05 17:15:22,154 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1169 ImplicationChecksByTransitivity, 1278.2ms TimeCoverageRelationStatistics Valid=396, Invalid=4026, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 17:15:22,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2021-06-05 17:15:22,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4361. [2021-06-05 17:15:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4361 states, 4360 states have (on average 3.3770642201834864) internal successors, (14724), 4360 states have internal predecessors, (14724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:22,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4361 states to 4361 states and 14724 transitions. [2021-06-05 17:15:22,212 INFO L78 Accepts]: Start accepts. Automaton has 4361 states and 14724 transitions. Word has length 39 [2021-06-05 17:15:22,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:22,212 INFO L482 AbstractCegarLoop]: Abstraction has 4361 states and 14724 transitions. [2021-06-05 17:15:22,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:22,212 INFO L276 IsEmpty]: Start isEmpty. Operand 4361 states and 14724 transitions. [2021-06-05 17:15:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:22,217 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:22,217 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:22,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-06-05 17:15:22,217 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:22,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:22,217 INFO L82 PathProgramCache]: Analyzing trace with hash 447403064, now seen corresponding path program 235 times [2021-06-05 17:15:22,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:22,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235850064] [2021-06-05 17:15:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:22,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:22,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235850064] [2021-06-05 17:15:22,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235850064] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:22,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:22,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:22,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157306510] [2021-06-05 17:15:22,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:22,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:22,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:22,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:22,402 INFO L87 Difference]: Start difference. First operand 4361 states and 14724 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:23,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:23,868 INFO L93 Difference]: Finished difference Result 4840 states and 16179 transitions. [2021-06-05 17:15:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 17:15:23,868 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:23,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:23,875 INFO L225 Difference]: With dead ends: 4840 [2021-06-05 17:15:23,875 INFO L226 Difference]: Without dead ends: 4773 [2021-06-05 17:15:23,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 916.3ms TimeCoverageRelationStatistics Valid=282, Invalid=2798, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:15:23,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4773 states. [2021-06-05 17:15:23,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4773 to 4373. [2021-06-05 17:15:23,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 4372 states have (on average 3.3737419945105214) internal successors, (14750), 4372 states have internal predecessors, (14750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 14750 transitions. [2021-06-05 17:15:23,929 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 14750 transitions. Word has length 39 [2021-06-05 17:15:23,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:23,929 INFO L482 AbstractCegarLoop]: Abstraction has 4373 states and 14750 transitions. [2021-06-05 17:15:23,929 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:23,929 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 14750 transitions. [2021-06-05 17:15:23,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:23,934 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:23,934 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:23,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-06-05 17:15:23,934 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:23,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:23,935 INFO L82 PathProgramCache]: Analyzing trace with hash 805473272, now seen corresponding path program 236 times [2021-06-05 17:15:23,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:23,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305500763] [2021-06-05 17:15:23,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:24,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:24,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:24,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305500763] [2021-06-05 17:15:24,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305500763] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:24,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:24,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:24,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997366575] [2021-06-05 17:15:24,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:24,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:24,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:24,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:24,118 INFO L87 Difference]: Start difference. First operand 4373 states and 14750 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:25,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:25,404 INFO L93 Difference]: Finished difference Result 4817 states and 16075 transitions. [2021-06-05 17:15:25,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 17:15:25,405 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 [2021-06-05 17:15:25,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:25,412 INFO L225 Difference]: With dead ends: 4817 [2021-06-05 17:15:25,412 INFO L226 Difference]: Without dead ends: 4774 [2021-06-05 17:15:25,412 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 812.1ms TimeCoverageRelationStatistics Valid=255, Invalid=2397, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 17:15:25,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4774 states. [2021-06-05 17:15:25,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4774 to 4391. [2021-06-05 17:15:25,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 4390 states have (on average 3.3687927107061504) internal successors, (14789), 4390 states have internal predecessors, (14789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:25,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 14789 transitions. [2021-06-05 17:15:25,468 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 14789 transitions. Word has length 39 [2021-06-05 17:15:25,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:25,468 INFO L482 AbstractCegarLoop]: Abstraction has 4391 states and 14789 transitions. [2021-06-05 17:15:25,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:25,469 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 14789 transitions. [2021-06-05 17:15:25,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:25,474 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:25,474 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:25,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-06-05 17:15:25,474 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:25,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:25,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1635004442, now seen corresponding path program 237 times [2021-06-05 17:15:25,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:25,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524274515] [2021-06-05 17:15:25,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:25,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:25,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524274515] [2021-06-05 17:15:25,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524274515] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:25,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:25,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:25,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702639953] [2021-06-05 17:15:25,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:25,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:25,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:25,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:25,663 INFO L87 Difference]: Start difference. First operand 4391 states and 14789 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:26,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:26,975 INFO L93 Difference]: Finished difference Result 4766 states and 15952 transitions. [2021-06-05 17:15:26,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 17:15:26,975 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 [2021-06-05 17:15:26,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:26,982 INFO L225 Difference]: With dead ends: 4766 [2021-06-05 17:15:26,982 INFO L226 Difference]: Without dead ends: 4703 [2021-06-05 17:15:26,982 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 828.0ms TimeCoverageRelationStatistics Valid=254, Invalid=2398, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 17:15:26,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4703 states. [2021-06-05 17:15:27,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4703 to 4373. [2021-06-05 17:15:27,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4373 states, 4372 states have (on average 3.372369624885636) internal successors, (14744), 4372 states have internal predecessors, (14744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:27,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 14744 transitions. [2021-06-05 17:15:27,036 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 14744 transitions. Word has length 39 [2021-06-05 17:15:27,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:27,037 INFO L482 AbstractCegarLoop]: Abstraction has 4373 states and 14744 transitions. [2021-06-05 17:15:27,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:27,037 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 14744 transitions. [2021-06-05 17:15:27,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:27,041 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:27,041 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:27,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-06-05 17:15:27,041 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:27,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:27,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1861188970, now seen corresponding path program 238 times [2021-06-05 17:15:27,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:27,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961200567] [2021-06-05 17:15:27,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:27,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:27,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961200567] [2021-06-05 17:15:27,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961200567] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:27,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:27,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:27,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879059916] [2021-06-05 17:15:27,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:27,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:27,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:27,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:27,224 INFO L87 Difference]: Start difference. First operand 4373 states and 14744 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:29,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:29,159 INFO L93 Difference]: Finished difference Result 4937 states and 16402 transitions. [2021-06-05 17:15:29,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 17:15:29,159 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:29,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:29,167 INFO L225 Difference]: With dead ends: 4937 [2021-06-05 17:15:29,167 INFO L226 Difference]: Without dead ends: 4894 [2021-06-05 17:15:29,167 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 1264.2ms TimeCoverageRelationStatistics Valid=378, Invalid=4044, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 17:15:29,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4894 states. [2021-06-05 17:15:29,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4894 to 4382. [2021-06-05 17:15:29,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 3.370919881305638) internal successors, (14768), 4381 states have internal predecessors, (14768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:29,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 14768 transitions. [2021-06-05 17:15:29,221 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 14768 transitions. Word has length 39 [2021-06-05 17:15:29,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:29,221 INFO L482 AbstractCegarLoop]: Abstraction has 4382 states and 14768 transitions. [2021-06-05 17:15:29,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:29,222 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 14768 transitions. [2021-06-05 17:15:29,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:29,226 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:29,226 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:29,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-06-05 17:15:29,226 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:29,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:29,226 INFO L82 PathProgramCache]: Analyzing trace with hash 653180024, now seen corresponding path program 239 times [2021-06-05 17:15:29,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:29,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309529403] [2021-06-05 17:15:29,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:29,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:29,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:29,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309529403] [2021-06-05 17:15:29,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309529403] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:29,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:29,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:29,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974422033] [2021-06-05 17:15:29,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:29,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:29,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:29,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:29,415 INFO L87 Difference]: Start difference. First operand 4382 states and 14768 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:31,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:31,221 INFO L93 Difference]: Finished difference Result 4932 states and 16383 transitions. [2021-06-05 17:15:31,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 17:15:31,222 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:31,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:31,229 INFO L225 Difference]: With dead ends: 4932 [2021-06-05 17:15:31,229 INFO L226 Difference]: Without dead ends: 4880 [2021-06-05 17:15:31,230 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 1186.4ms TimeCoverageRelationStatistics Valid=363, Invalid=3927, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 17:15:31,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4880 states. [2021-06-05 17:15:31,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4880 to 4376. [2021-06-05 17:15:31,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 3.3718857142857144) internal successors, (14752), 4375 states have internal predecessors, (14752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 14752 transitions. [2021-06-05 17:15:31,309 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 14752 transitions. Word has length 39 [2021-06-05 17:15:31,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:31,310 INFO L482 AbstractCegarLoop]: Abstraction has 4376 states and 14752 transitions. [2021-06-05 17:15:31,310 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) [2021-06-05 17:15:31,310 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 14752 transitions. [2021-06-05 17:15:31,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:31,315 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:31,315 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:31,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-06-05 17:15:31,315 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:31,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:31,315 INFO L82 PathProgramCache]: Analyzing trace with hash 896359096, now seen corresponding path program 240 times [2021-06-05 17:15:31,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:31,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830007868] [2021-06-05 17:15:31,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:31,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:31,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:31,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830007868] [2021-06-05 17:15:31,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830007868] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:31,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:31,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:31,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638618327] [2021-06-05 17:15:31,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:31,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:31,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:31,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:31,495 INFO L87 Difference]: Start difference. First operand 4376 states and 14752 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:32,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:32,797 INFO L93 Difference]: Finished difference Result 4913 states and 16289 transitions. [2021-06-05 17:15:32,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 17:15:32,797 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:32,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:32,805 INFO L225 Difference]: With dead ends: 4913 [2021-06-05 17:15:32,806 INFO L226 Difference]: Without dead ends: 4870 [2021-06-05 17:15:32,806 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 823.3ms TimeCoverageRelationStatistics Valid=265, Invalid=2491, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 17:15:32,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4870 states. [2021-06-05 17:15:32,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4870 to 4385. [2021-06-05 17:15:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 4384 states have (on average 3.3697536496350367) internal successors, (14773), 4384 states have internal predecessors, (14773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:32,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 14773 transitions. [2021-06-05 17:15:32,863 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 14773 transitions. Word has length 39 [2021-06-05 17:15:32,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:32,863 INFO L482 AbstractCegarLoop]: Abstraction has 4385 states and 14773 transitions. [2021-06-05 17:15:32,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:32,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 14773 transitions. [2021-06-05 17:15:32,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:32,868 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:32,868 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:32,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-06-05 17:15:32,868 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:32,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:32,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1648501064, now seen corresponding path program 241 times [2021-06-05 17:15:32,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:32,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452242263] [2021-06-05 17:15:32,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:33,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:33,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452242263] [2021-06-05 17:15:33,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452242263] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:33,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:33,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:33,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353583824] [2021-06-05 17:15:33,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:33,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:33,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:33,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:33,068 INFO L87 Difference]: Start difference. First operand 4385 states and 14773 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:34,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:34,439 INFO L93 Difference]: Finished difference Result 4876 states and 16203 transitions. [2021-06-05 17:15:34,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 17:15:34,439 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:34,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:34,446 INFO L225 Difference]: With dead ends: 4876 [2021-06-05 17:15:34,447 INFO L226 Difference]: Without dead ends: 4825 [2021-06-05 17:15:34,447 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 878.2ms TimeCoverageRelationStatistics Valid=272, Invalid=2590, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 17:15:34,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2021-06-05 17:15:34,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 4379. [2021-06-05 17:15:34,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 4378 states have (on average 3.3707172224760162) internal successors, (14757), 4378 states have internal predecessors, (14757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:34,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 14757 transitions. [2021-06-05 17:15:34,503 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 14757 transitions. Word has length 39 [2021-06-05 17:15:34,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:34,503 INFO L482 AbstractCegarLoop]: Abstraction has 4379 states and 14757 transitions. [2021-06-05 17:15:34,503 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:34,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 14757 transitions. [2021-06-05 17:15:34,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:34,508 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:34,508 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:34,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-06-05 17:15:34,508 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:34,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:34,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1031282662, now seen corresponding path program 242 times [2021-06-05 17:15:34,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:34,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925253150] [2021-06-05 17:15:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:34,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:34,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925253150] [2021-06-05 17:15:34,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925253150] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:34,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:34,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:34,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104962515] [2021-06-05 17:15:34,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:34,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:34,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:34,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:34,691 INFO L87 Difference]: Start difference. First operand 4379 states and 14757 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:35,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:35,961 INFO L93 Difference]: Finished difference Result 4848 states and 16132 transitions. [2021-06-05 17:15:35,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 17:15:35,961 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:35,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:35,968 INFO L225 Difference]: With dead ends: 4848 [2021-06-05 17:15:35,968 INFO L226 Difference]: Without dead ends: 4802 [2021-06-05 17:15:35,968 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 790.8ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:15:35,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4802 states. [2021-06-05 17:15:36,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4802 to 4386. [2021-06-05 17:15:36,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4385 states have (on average 3.368757126567845) internal successors, (14772), 4385 states have internal predecessors, (14772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:36,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 14772 transitions. [2021-06-05 17:15:36,023 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 14772 transitions. Word has length 39 [2021-06-05 17:15:36,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:36,023 INFO L482 AbstractCegarLoop]: Abstraction has 4386 states and 14772 transitions. [2021-06-05 17:15:36,023 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) [2021-06-05 17:15:36,023 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 14772 transitions. [2021-06-05 17:15:36,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:36,028 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:36,028 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:36,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-06-05 17:15:36,028 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:36,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:36,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1828617144, now seen corresponding path program 243 times [2021-06-05 17:15:36,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:36,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872026668] [2021-06-05 17:15:36,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:36,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:36,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872026668] [2021-06-05 17:15:36,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872026668] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:36,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:36,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:36,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088113859] [2021-06-05 17:15:36,213 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:36,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:36,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:36,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:36,213 INFO L87 Difference]: Start difference. First operand 4386 states and 14772 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:37,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:37,562 INFO L93 Difference]: Finished difference Result 4808 states and 16038 transitions. [2021-06-05 17:15:37,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 17:15:37,562 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:37,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:37,570 INFO L225 Difference]: With dead ends: 4808 [2021-06-05 17:15:37,570 INFO L226 Difference]: Without dead ends: 4747 [2021-06-05 17:15:37,570 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 845.1ms TimeCoverageRelationStatistics Valid=263, Invalid=2493, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 17:15:37,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4747 states. [2021-06-05 17:15:37,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4747 to 4370. [2021-06-05 17:15:37,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4370 states, 4369 states have (on average 3.373769741359579) internal successors, (14740), 4369 states have internal predecessors, (14740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:37,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 14740 transitions. [2021-06-05 17:15:37,629 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 14740 transitions. Word has length 39 [2021-06-05 17:15:37,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:37,629 INFO L482 AbstractCegarLoop]: Abstraction has 4370 states and 14740 transitions. [2021-06-05 17:15:37,629 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:37,629 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 14740 transitions. [2021-06-05 17:15:37,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:37,634 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:37,634 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:37,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-06-05 17:15:37,634 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:37,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:37,634 INFO L82 PathProgramCache]: Analyzing trace with hash -458552998, now seen corresponding path program 244 times [2021-06-05 17:15:37,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:37,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669262620] [2021-06-05 17:15:37,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:37,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:37,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669262620] [2021-06-05 17:15:37,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669262620] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:37,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:37,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:37,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116085931] [2021-06-05 17:15:37,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:37,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:37,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:37,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:37,845 INFO L87 Difference]: Start difference. First operand 4370 states and 14740 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:39,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:39,132 INFO L93 Difference]: Finished difference Result 4803 states and 16056 transitions. [2021-06-05 17:15:39,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 17:15:39,132 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:39,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:39,140 INFO L225 Difference]: With dead ends: 4803 [2021-06-05 17:15:39,140 INFO L226 Difference]: Without dead ends: 4740 [2021-06-05 17:15:39,140 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 839.1ms TimeCoverageRelationStatistics Valid=269, Invalid=2487, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 17:15:39,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4740 states. [2021-06-05 17:15:39,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4740 to 4374. [2021-06-05 17:15:39,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 4373 states have (on average 3.372970500800366) internal successors, (14750), 4373 states have internal predecessors, (14750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 14750 transitions. [2021-06-05 17:15:39,228 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 14750 transitions. Word has length 39 [2021-06-05 17:15:39,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:39,228 INFO L482 AbstractCegarLoop]: Abstraction has 4374 states and 14750 transitions. [2021-06-05 17:15:39,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:39,228 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 14750 transitions. [2021-06-05 17:15:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:39,233 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:39,233 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:39,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-06-05 17:15:39,233 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:39,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:39,233 INFO L82 PathProgramCache]: Analyzing trace with hash -704045096, now seen corresponding path program 245 times [2021-06-05 17:15:39,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:39,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741869081] [2021-06-05 17:15:39,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:39,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:39,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741869081] [2021-06-05 17:15:39,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741869081] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:39,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:39,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:39,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555184257] [2021-06-05 17:15:39,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:39,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:39,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:39,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:39,416 INFO L87 Difference]: Start difference. First operand 4374 states and 14750 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:40,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:40,686 INFO L93 Difference]: Finished difference Result 4842 states and 16145 transitions. [2021-06-05 17:15:40,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 17:15:40,686 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:40,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:40,694 INFO L225 Difference]: With dead ends: 4842 [2021-06-05 17:15:40,694 INFO L226 Difference]: Without dead ends: 4799 [2021-06-05 17:15:40,694 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 803.4ms TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 17:15:40,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2021-06-05 17:15:40,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 4392. [2021-06-05 17:15:40,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4391 states have (on average 3.3680255067182876) internal successors, (14789), 4391 states have internal predecessors, (14789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:40,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 14789 transitions. [2021-06-05 17:15:40,749 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 14789 transitions. Word has length 39 [2021-06-05 17:15:40,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:40,750 INFO L482 AbstractCegarLoop]: Abstraction has 4392 states and 14789 transitions. [2021-06-05 17:15:40,750 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) [2021-06-05 17:15:40,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 14789 transitions. [2021-06-05 17:15:40,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:40,754 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:40,754 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:40,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-06-05 17:15:40,754 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:40,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:40,754 INFO L82 PathProgramCache]: Analyzing trace with hash 125486074, now seen corresponding path program 246 times [2021-06-05 17:15:40,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:40,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463613195] [2021-06-05 17:15:40,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:40,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:40,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:40,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463613195] [2021-06-05 17:15:40,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463613195] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:40,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:40,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:40,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725070136] [2021-06-05 17:15:40,937 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:40,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:40,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:40,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:40,937 INFO L87 Difference]: Start difference. First operand 4392 states and 14789 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:42,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:42,229 INFO L93 Difference]: Finished difference Result 4773 states and 15971 transitions. [2021-06-05 17:15:42,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 17:15:42,229 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 [2021-06-05 17:15:42,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:42,238 INFO L225 Difference]: With dead ends: 4773 [2021-06-05 17:15:42,238 INFO L226 Difference]: Without dead ends: 4710 [2021-06-05 17:15:42,238 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 810.3ms TimeCoverageRelationStatistics Valid=242, Invalid=2308, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:15:42,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2021-06-05 17:15:42,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 4374. [2021-06-05 17:15:42,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 4373 states have (on average 3.372055796935742) internal successors, (14746), 4373 states have internal predecessors, (14746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:42,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 14746 transitions. [2021-06-05 17:15:42,295 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 14746 transitions. Word has length 39 [2021-06-05 17:15:42,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:42,295 INFO L482 AbstractCegarLoop]: Abstraction has 4374 states and 14746 transitions. [2021-06-05 17:15:42,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:42,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 14746 transitions. [2021-06-05 17:15:42,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:42,300 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:42,300 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:42,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-06-05 17:15:42,300 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:42,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:42,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1887749734, now seen corresponding path program 247 times [2021-06-05 17:15:42,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:42,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322422548] [2021-06-05 17:15:42,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:42,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:42,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322422548] [2021-06-05 17:15:42,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322422548] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:42,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:42,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:42,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066882707] [2021-06-05 17:15:42,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:42,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:42,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:42,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:42,481 INFO L87 Difference]: Start difference. First operand 4374 states and 14746 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:43,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:43,853 INFO L93 Difference]: Finished difference Result 4842 states and 16147 transitions. [2021-06-05 17:15:43,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 17:15:43,853 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:43,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:43,861 INFO L225 Difference]: With dead ends: 4842 [2021-06-05 17:15:43,861 INFO L226 Difference]: Without dead ends: 4787 [2021-06-05 17:15:43,861 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 892.1ms TimeCoverageRelationStatistics Valid=295, Invalid=2785, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:15:43,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4787 states. [2021-06-05 17:15:43,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4787 to 4380. [2021-06-05 17:15:43,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4380 states, 4379 states have (on average 3.3704042018725735) internal successors, (14759), 4379 states have internal predecessors, (14759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:43,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 14759 transitions. [2021-06-05 17:15:43,915 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 14759 transitions. Word has length 39 [2021-06-05 17:15:43,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:43,915 INFO L482 AbstractCegarLoop]: Abstraction has 4380 states and 14759 transitions. [2021-06-05 17:15:43,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:43,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 14759 transitions. [2021-06-05 17:15:43,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:43,920 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:43,920 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:43,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-06-05 17:15:43,920 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:43,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:43,921 INFO L82 PathProgramCache]: Analyzing trace with hash -550691720, now seen corresponding path program 248 times [2021-06-05 17:15:43,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:43,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623117169] [2021-06-05 17:15:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:43,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:44,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:44,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:44,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623117169] [2021-06-05 17:15:44,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623117169] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:44,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:44,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:44,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718137216] [2021-06-05 17:15:44,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:44,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:44,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:44,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:44,103 INFO L87 Difference]: Start difference. First operand 4380 states and 14759 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:45,429 INFO L93 Difference]: Finished difference Result 4818 states and 16077 transitions. [2021-06-05 17:15:45,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 17:15:45,430 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:45,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:45,437 INFO L225 Difference]: With dead ends: 4818 [2021-06-05 17:15:45,437 INFO L226 Difference]: Without dead ends: 4775 [2021-06-05 17:15:45,437 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 841.8ms TimeCoverageRelationStatistics Valid=271, Invalid=2591, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 17:15:45,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2021-06-05 17:15:45,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4386. [2021-06-05 17:15:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4385 states have (on average 3.368757126567845) internal successors, (14772), 4385 states have internal predecessors, (14772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:45,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 14772 transitions. [2021-06-05 17:15:45,492 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 14772 transitions. Word has length 39 [2021-06-05 17:15:45,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:45,492 INFO L482 AbstractCegarLoop]: Abstraction has 4386 states and 14772 transitions. [2021-06-05 17:15:45,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:45,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 14772 transitions. [2021-06-05 17:15:45,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:45,496 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:45,496 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:45,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-06-05 17:15:45,497 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:45,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:45,497 INFO L82 PathProgramCache]: Analyzing trace with hash -822111270, now seen corresponding path program 249 times [2021-06-05 17:15:45,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:45,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126486207] [2021-06-05 17:15:45,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:45,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:45,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:45,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126486207] [2021-06-05 17:15:45,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126486207] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:45,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:45,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:45,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922793603] [2021-06-05 17:15:45,677 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:45,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:45,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:45,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:45,677 INFO L87 Difference]: Start difference. First operand 4386 states and 14772 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:46,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:46,982 INFO L93 Difference]: Finished difference Result 4767 states and 15954 transitions. [2021-06-05 17:15:46,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 17:15:46,983 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 [2021-06-05 17:15:46,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:46,990 INFO L225 Difference]: With dead ends: 4767 [2021-06-05 17:15:46,990 INFO L226 Difference]: Without dead ends: 4706 [2021-06-05 17:15:46,991 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 823.2ms TimeCoverageRelationStatistics Valid=257, Invalid=2499, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 17:15:47,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2021-06-05 17:15:47,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 4370. [2021-06-05 17:15:47,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4370 states, 4369 states have (on average 3.373311970702678) internal successors, (14738), 4369 states have internal predecessors, (14738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:47,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 14738 transitions. [2021-06-05 17:15:47,080 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 14738 transitions. Word has length 39 [2021-06-05 17:15:47,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:47,080 INFO L482 AbstractCegarLoop]: Abstraction has 4370 states and 14738 transitions. [2021-06-05 17:15:47,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:47,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 14738 transitions. [2021-06-05 17:15:47,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:47,084 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:47,084 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:47,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-06-05 17:15:47,085 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:47,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:47,085 INFO L82 PathProgramCache]: Analyzing trace with hash -920266484, now seen corresponding path program 250 times [2021-06-05 17:15:47,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:47,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630906608] [2021-06-05 17:15:47,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:47,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:47,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:47,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630906608] [2021-06-05 17:15:47,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630906608] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:47,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:47,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:47,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286816452] [2021-06-05 17:15:47,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:47,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:47,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:47,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:47,265 INFO L87 Difference]: Start difference. First operand 4370 states and 14738 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:48,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:48,862 INFO L93 Difference]: Finished difference Result 5001 states and 16511 transitions. [2021-06-05 17:15:48,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 17:15:48,862 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:48,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:48,869 INFO L225 Difference]: With dead ends: 5001 [2021-06-05 17:15:48,869 INFO L226 Difference]: Without dead ends: 4946 [2021-06-05 17:15:48,870 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 1084.2ms TimeCoverageRelationStatistics Valid=363, Invalid=3419, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 17:15:48,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2021-06-05 17:15:48,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4379. [2021-06-05 17:15:48,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 4378 states have (on average 3.3709456372772957) internal successors, (14758), 4378 states have internal predecessors, (14758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 14758 transitions. [2021-06-05 17:15:48,927 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 14758 transitions. Word has length 39 [2021-06-05 17:15:48,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:48,927 INFO L482 AbstractCegarLoop]: Abstraction has 4379 states and 14758 transitions. [2021-06-05 17:15:48,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:48,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 14758 transitions. [2021-06-05 17:15:48,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:48,932 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:48,932 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:48,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-06-05 17:15:48,932 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:48,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:48,932 INFO L82 PathProgramCache]: Analyzing trace with hash 252385738, now seen corresponding path program 251 times [2021-06-05 17:15:48,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:48,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369644387] [2021-06-05 17:15:48,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:49,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:49,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369644387] [2021-06-05 17:15:49,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369644387] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:49,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:49,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:49,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727725712] [2021-06-05 17:15:49,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:49,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:49,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:49,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:49,112 INFO L87 Difference]: Start difference. First operand 4379 states and 14758 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:50,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:50,565 INFO L93 Difference]: Finished difference Result 4992 states and 16478 transitions. [2021-06-05 17:15:50,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:15:50,565 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:50,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:50,572 INFO L225 Difference]: With dead ends: 4992 [2021-06-05 17:15:50,572 INFO L226 Difference]: Without dead ends: 4946 [2021-06-05 17:15:50,572 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 970.2ms TimeCoverageRelationStatistics Valid=309, Invalid=2883, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 17:15:50,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2021-06-05 17:15:50,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4385. [2021-06-05 17:15:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 4384 states have (on average 3.3697536496350367) internal successors, (14773), 4384 states have internal predecessors, (14773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 14773 transitions. [2021-06-05 17:15:50,627 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 14773 transitions. Word has length 39 [2021-06-05 17:15:50,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:50,627 INFO L482 AbstractCegarLoop]: Abstraction has 4385 states and 14773 transitions. [2021-06-05 17:15:50,627 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) [2021-06-05 17:15:50,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 14773 transitions. [2021-06-05 17:15:50,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:50,632 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:50,632 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:50,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-06-05 17:15:50,632 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:50,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:50,632 INFO L82 PathProgramCache]: Analyzing trace with hash 4919576, now seen corresponding path program 252 times [2021-06-05 17:15:50,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:50,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675964245] [2021-06-05 17:15:50,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:50,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:50,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:50,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675964245] [2021-06-05 17:15:50,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675964245] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:50,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:50,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:50,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204540247] [2021-06-05 17:15:50,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:50,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:50,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:50,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:50,812 INFO L87 Difference]: Start difference. First operand 4385 states and 14773 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:52,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:52,261 INFO L93 Difference]: Finished difference Result 4952 states and 16385 transitions. [2021-06-05 17:15:52,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:15:52,261 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:52,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:52,269 INFO L225 Difference]: With dead ends: 4952 [2021-06-05 17:15:52,269 INFO L226 Difference]: Without dead ends: 4907 [2021-06-05 17:15:52,269 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 964.6ms TimeCoverageRelationStatistics Valid=310, Invalid=2882, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 17:15:52,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4907 states. [2021-06-05 17:15:52,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4907 to 4383. [2021-06-05 17:15:52,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4383 states, 4382 states have (on average 3.3703788224555) internal successors, (14769), 4382 states have internal predecessors, (14769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:52,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4383 states to 4383 states and 14769 transitions. [2021-06-05 17:15:52,356 INFO L78 Accepts]: Start accepts. Automaton has 4383 states and 14769 transitions. Word has length 39 [2021-06-05 17:15:52,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:52,356 INFO L482 AbstractCegarLoop]: Abstraction has 4383 states and 14769 transitions. [2021-06-05 17:15:52,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:52,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4383 states and 14769 transitions. [2021-06-05 17:15:52,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:52,361 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:52,361 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:52,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-06-05 17:15:52,361 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:52,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:52,361 INFO L82 PathProgramCache]: Analyzing trace with hash 184640858, now seen corresponding path program 253 times [2021-06-05 17:15:52,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:52,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566848989] [2021-06-05 17:15:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:52,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:52,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:52,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566848989] [2021-06-05 17:15:52,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566848989] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:52,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:52,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:52,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346316638] [2021-06-05 17:15:52,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:52,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:52,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:52,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:52,548 INFO L87 Difference]: Start difference. First operand 4383 states and 14769 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:54,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:54,029 INFO L93 Difference]: Finished difference Result 5007 states and 16523 transitions. [2021-06-05 17:15:54,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 17:15:54,037 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:54,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:54,044 INFO L225 Difference]: With dead ends: 5007 [2021-06-05 17:15:54,044 INFO L226 Difference]: Without dead ends: 4964 [2021-06-05 17:15:54,045 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 974.7ms TimeCoverageRelationStatistics Valid=322, Invalid=3100, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 17:15:54,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4964 states. [2021-06-05 17:15:54,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4964 to 4392. [2021-06-05 17:15:54,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4391 states have (on average 3.368253245274425) internal successors, (14790), 4391 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:54,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 14790 transitions. [2021-06-05 17:15:54,101 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 14790 transitions. Word has length 39 [2021-06-05 17:15:54,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:54,101 INFO L482 AbstractCegarLoop]: Abstraction has 4392 states and 14790 transitions. [2021-06-05 17:15:54,101 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) [2021-06-05 17:15:54,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 14790 transitions. [2021-06-05 17:15:54,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:54,106 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:54,106 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:54,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-06-05 17:15:54,106 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:54,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:54,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1934747994, now seen corresponding path program 254 times [2021-06-05 17:15:54,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:54,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999752419] [2021-06-05 17:15:54,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:54,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:54,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:54,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999752419] [2021-06-05 17:15:54,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999752419] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:54,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:54,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:54,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34737573] [2021-06-05 17:15:54,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:54,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:54,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:54,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:54,286 INFO L87 Difference]: Start difference. First operand 4392 states and 14790 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:55,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:55,745 INFO L93 Difference]: Finished difference Result 4972 states and 16438 transitions. [2021-06-05 17:15:55,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:15:55,745 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 [2021-06-05 17:15:55,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:55,752 INFO L225 Difference]: With dead ends: 4972 [2021-06-05 17:15:55,752 INFO L226 Difference]: Without dead ends: 4921 [2021-06-05 17:15:55,753 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 920.6ms TimeCoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 17:15:55,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4921 states. [2021-06-05 17:15:55,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4921 to 4392. [2021-06-05 17:15:55,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4391 states have (on average 3.3675700296060125) internal successors, (14787), 4391 states have internal predecessors, (14787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 14787 transitions. [2021-06-05 17:15:55,806 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 14787 transitions. Word has length 39 [2021-06-05 17:15:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:55,806 INFO L482 AbstractCegarLoop]: Abstraction has 4392 states and 14787 transitions. [2021-06-05 17:15:55,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 14787 transitions. [2021-06-05 17:15:55,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:55,811 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:55,811 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:55,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-06-05 17:15:55,811 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:55,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:55,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1743000900, now seen corresponding path program 255 times [2021-06-05 17:15:55,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:55,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304735734] [2021-06-05 17:15:55,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:55,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:55,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304735734] [2021-06-05 17:15:55,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304735734] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:55,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:55,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:55,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332361111] [2021-06-05 17:15:55,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:55,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:55,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:55,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:55,993 INFO L87 Difference]: Start difference. First operand 4392 states and 14787 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:57,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:57,383 INFO L93 Difference]: Finished difference Result 4995 states and 16482 transitions. [2021-06-05 17:15:57,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 17:15:57,383 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:57,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:57,390 INFO L225 Difference]: With dead ends: 4995 [2021-06-05 17:15:57,390 INFO L226 Difference]: Without dead ends: 4949 [2021-06-05 17:15:57,391 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 896.3ms TimeCoverageRelationStatistics Valid=281, Invalid=2689, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 17:15:57,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2021-06-05 17:15:57,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4399. [2021-06-05 17:15:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4399 states, 4398 states have (on average 3.3656207366984994) internal successors, (14802), 4398 states have internal predecessors, (14802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:57,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 14802 transitions. [2021-06-05 17:15:57,448 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 14802 transitions. Word has length 39 [2021-06-05 17:15:57,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:57,448 INFO L482 AbstractCegarLoop]: Abstraction has 4399 states and 14802 transitions. [2021-06-05 17:15:57,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:57,448 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 14802 transitions. [2021-06-05 17:15:57,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:57,453 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:57,454 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:57,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-06-05 17:15:57,454 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:57,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:57,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1116898906, now seen corresponding path program 256 times [2021-06-05 17:15:57,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:57,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887536963] [2021-06-05 17:15:57,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:57,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:57,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887536963] [2021-06-05 17:15:57,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887536963] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:57,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:57,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:57,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095362461] [2021-06-05 17:15:57,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:57,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:57,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:57,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:57,673 INFO L87 Difference]: Start difference. First operand 4399 states and 14802 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:59,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:15:59,081 INFO L93 Difference]: Finished difference Result 4958 states and 16391 transitions. [2021-06-05 17:15:59,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 17:15:59,082 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:15:59,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:15:59,090 INFO L225 Difference]: With dead ends: 4958 [2021-06-05 17:15:59,090 INFO L226 Difference]: Without dead ends: 4903 [2021-06-05 17:15:59,090 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 935.2ms TimeCoverageRelationStatistics Valid=287, Invalid=2793, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:15:59,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4903 states. [2021-06-05 17:15:59,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4903 to 4396. [2021-06-05 17:15:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4396 states, 4395 states have (on average 3.3665529010238906) internal successors, (14796), 4395 states have internal predecessors, (14796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 14796 transitions. [2021-06-05 17:15:59,154 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 14796 transitions. Word has length 39 [2021-06-05 17:15:59,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:15:59,154 INFO L482 AbstractCegarLoop]: Abstraction has 4396 states and 14796 transitions. [2021-06-05 17:15:59,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:15:59,155 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 14796 transitions. [2021-06-05 17:15:59,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:15:59,160 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:15:59,160 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:15:59,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-06-05 17:15:59,160 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:15:59,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:15:59,160 INFO L82 PathProgramCache]: Analyzing trace with hash -165804212, now seen corresponding path program 257 times [2021-06-05 17:15:59,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:15:59,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168692027] [2021-06-05 17:15:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:15:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:15:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:15:59,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:15:59,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168692027] [2021-06-05 17:15:59,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168692027] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:15:59,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:15:59,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:15:59,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997611590] [2021-06-05 17:15:59,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:15:59,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:15:59,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:15:59,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:15:59,350 INFO L87 Difference]: Start difference. First operand 4396 states and 14796 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:00,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:00,801 INFO L93 Difference]: Finished difference Result 4942 states and 16351 transitions. [2021-06-05 17:16:00,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:16:00,802 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:00,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:00,809 INFO L225 Difference]: With dead ends: 4942 [2021-06-05 17:16:00,809 INFO L226 Difference]: Without dead ends: 4885 [2021-06-05 17:16:00,809 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 943.4ms TimeCoverageRelationStatistics Valid=295, Invalid=2897, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 17:16:00,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4885 states. [2021-06-05 17:16:00,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4885 to 4384. [2021-06-05 17:16:00,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 4383 states have (on average 3.3696098562628336) internal successors, (14769), 4383 states have internal predecessors, (14769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:00,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 14769 transitions. [2021-06-05 17:16:00,862 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 14769 transitions. Word has length 39 [2021-06-05 17:16:00,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:00,863 INFO L482 AbstractCegarLoop]: Abstraction has 4384 states and 14769 transitions. [2021-06-05 17:16:00,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:00,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 14769 transitions. [2021-06-05 17:16:00,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:00,867 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:00,867 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:00,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-06-05 17:16:00,867 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:00,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:00,868 INFO L82 PathProgramCache]: Analyzing trace with hash 574927414, now seen corresponding path program 258 times [2021-06-05 17:16:00,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:00,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580100973] [2021-06-05 17:16:00,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:01,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:01,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580100973] [2021-06-05 17:16:01,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580100973] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:01,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:01,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:01,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488114679] [2021-06-05 17:16:01,048 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:01,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:01,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:01,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:01,048 INFO L87 Difference]: Start difference. First operand 4384 states and 14769 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:02,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:02,439 INFO L93 Difference]: Finished difference Result 4869 states and 16186 transitions. [2021-06-05 17:16:02,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 17:16:02,439 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:02,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:02,446 INFO L225 Difference]: With dead ends: 4869 [2021-06-05 17:16:02,446 INFO L226 Difference]: Without dead ends: 4826 [2021-06-05 17:16:02,447 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 898.8ms TimeCoverageRelationStatistics Valid=282, Invalid=2688, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 17:16:02,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2021-06-05 17:16:02,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 4384. [2021-06-05 17:16:02,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 4383 states have (on average 3.3691535477983114) internal successors, (14767), 4383 states have internal predecessors, (14767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:02,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 14767 transitions. [2021-06-05 17:16:02,502 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 14767 transitions. Word has length 39 [2021-06-05 17:16:02,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:02,502 INFO L482 AbstractCegarLoop]: Abstraction has 4384 states and 14767 transitions. [2021-06-05 17:16:02,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:02,502 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 14767 transitions. [2021-06-05 17:16:02,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:02,506 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:02,506 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:02,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-06-05 17:16:02,506 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:02,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:02,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1883282392, now seen corresponding path program 259 times [2021-06-05 17:16:02,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:02,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112060083] [2021-06-05 17:16:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:02,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:02,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:02,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112060083] [2021-06-05 17:16:02,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112060083] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:02,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:02,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:02,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216932657] [2021-06-05 17:16:02,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:02,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:02,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:02,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:02,687 INFO L87 Difference]: Start difference. First operand 4384 states and 14767 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:04,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:04,096 INFO L93 Difference]: Finished difference Result 4871 states and 16187 transitions. [2021-06-05 17:16:04,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 17:16:04,096 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:04,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:04,104 INFO L225 Difference]: With dead ends: 4871 [2021-06-05 17:16:04,104 INFO L226 Difference]: Without dead ends: 4810 [2021-06-05 17:16:04,104 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 897.4ms TimeCoverageRelationStatistics Valid=279, Invalid=2691, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 17:16:04,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2021-06-05 17:16:04,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4368. [2021-06-05 17:16:04,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4367 states have (on average 3.373940920540417) internal successors, (14734), 4367 states have internal predecessors, (14734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:04,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 14734 transitions. [2021-06-05 17:16:04,160 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 14734 transitions. Word has length 39 [2021-06-05 17:16:04,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:04,160 INFO L482 AbstractCegarLoop]: Abstraction has 4368 states and 14734 transitions. [2021-06-05 17:16:04,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:04,160 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 14734 transitions. [2021-06-05 17:16:04,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:04,165 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:04,165 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:04,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-06-05 17:16:04,165 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:04,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:04,165 INFO L82 PathProgramCache]: Analyzing trace with hash 818242360, now seen corresponding path program 260 times [2021-06-05 17:16:04,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:04,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367276141] [2021-06-05 17:16:04,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:04,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:04,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367276141] [2021-06-05 17:16:04,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367276141] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:04,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:04,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:04,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38663795] [2021-06-05 17:16:04,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:04,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:04,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:04,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:04,346 INFO L87 Difference]: Start difference. First operand 4368 states and 14734 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:05,473 INFO L93 Difference]: Finished difference Result 4723 states and 15822 transitions. [2021-06-05 17:16:05,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 17:16:05,473 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:05,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:05,480 INFO L225 Difference]: With dead ends: 4723 [2021-06-05 17:16:05,480 INFO L226 Difference]: Without dead ends: 4660 [2021-06-05 17:16:05,481 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 692.9ms TimeCoverageRelationStatistics Valid=212, Invalid=1950, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:16:05,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4660 states. [2021-06-05 17:16:05,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4660 to 4400. [2021-06-05 17:16:05,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4400 states, 4399 states have (on average 3.368492839281655) internal successors, (14818), 4399 states have internal predecessors, (14818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 14818 transitions. [2021-06-05 17:16:05,568 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 14818 transitions. Word has length 39 [2021-06-05 17:16:05,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:05,569 INFO L482 AbstractCegarLoop]: Abstraction has 4400 states and 14818 transitions. [2021-06-05 17:16:05,569 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) [2021-06-05 17:16:05,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 14818 transitions. [2021-06-05 17:16:05,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:05,574 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:05,574 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:05,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-06-05 17:16:05,574 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:05,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:05,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1188819320, now seen corresponding path program 261 times [2021-06-05 17:16:05,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:05,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3828506] [2021-06-05 17:16:05,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:05,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:05,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3828506] [2021-06-05 17:16:05,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3828506] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:05,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:05,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:05,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284365162] [2021-06-05 17:16:05,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:05,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:05,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:05,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:05,756 INFO L87 Difference]: Start difference. First operand 4400 states and 14818 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:06,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:06,902 INFO L93 Difference]: Finished difference Result 4747 states and 15882 transitions. [2021-06-05 17:16:06,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 17:16:06,902 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:06,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:06,910 INFO L225 Difference]: With dead ends: 4747 [2021-06-05 17:16:06,910 INFO L226 Difference]: Without dead ends: 4624 [2021-06-05 17:16:06,910 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 705.9ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 17:16:06,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4624 states. [2021-06-05 17:16:06,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4624 to 4368. [2021-06-05 17:16:06,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4367 states have (on average 3.370277078085642) internal successors, (14718), 4367 states have internal predecessors, (14718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:06,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 14718 transitions. [2021-06-05 17:16:06,971 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 14718 transitions. Word has length 39 [2021-06-05 17:16:06,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:06,971 INFO L482 AbstractCegarLoop]: Abstraction has 4368 states and 14718 transitions. [2021-06-05 17:16:06,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:06,972 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 14718 transitions. [2021-06-05 17:16:06,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:06,976 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:06,976 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:06,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-06-05 17:16:06,977 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:06,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:06,977 INFO L82 PathProgramCache]: Analyzing trace with hash 686356922, now seen corresponding path program 262 times [2021-06-05 17:16:06,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:06,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217968494] [2021-06-05 17:16:06,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:07,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:07,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:07,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217968494] [2021-06-05 17:16:07,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217968494] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:07,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:07,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:07,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497624628] [2021-06-05 17:16:07,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:07,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:07,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:07,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:07,159 INFO L87 Difference]: Start difference. First operand 4368 states and 14718 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:08,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:08,322 INFO L93 Difference]: Finished difference Result 4707 states and 15768 transitions. [2021-06-05 17:16:08,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 17:16:08,323 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 [2021-06-05 17:16:08,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:08,330 INFO L225 Difference]: With dead ends: 4707 [2021-06-05 17:16:08,330 INFO L226 Difference]: Without dead ends: 4644 [2021-06-05 17:16:08,330 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 730.5ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 17:16:08,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4644 states. [2021-06-05 17:16:08,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4644 to 4368. [2021-06-05 17:16:08,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4367 states have (on average 3.3693611174719487) internal successors, (14714), 4367 states have internal predecessors, (14714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:08,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 14714 transitions. [2021-06-05 17:16:08,385 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 14714 transitions. Word has length 39 [2021-06-05 17:16:08,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:08,385 INFO L482 AbstractCegarLoop]: Abstraction has 4368 states and 14714 transitions. [2021-06-05 17:16:08,385 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) [2021-06-05 17:16:08,385 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 14714 transitions. [2021-06-05 17:16:08,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:08,390 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:08,390 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:08,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-06-05 17:16:08,390 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:08,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:08,391 INFO L82 PathProgramCache]: Analyzing trace with hash 440864824, now seen corresponding path program 263 times [2021-06-05 17:16:08,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:08,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989910844] [2021-06-05 17:16:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:08,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:08,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989910844] [2021-06-05 17:16:08,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989910844] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:08,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:08,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:08,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926382877] [2021-06-05 17:16:08,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:08,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:08,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:08,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:08,574 INFO L87 Difference]: Start difference. First operand 4368 states and 14714 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:09,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:09,680 INFO L93 Difference]: Finished difference Result 4724 states and 15794 transitions. [2021-06-05 17:16:09,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 17:16:09,680 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 [2021-06-05 17:16:09,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:09,687 INFO L225 Difference]: With dead ends: 4724 [2021-06-05 17:16:09,687 INFO L226 Difference]: Without dead ends: 4681 [2021-06-05 17:16:09,688 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 681.1ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:16:09,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2021-06-05 17:16:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4374. [2021-06-05 17:16:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 4373 states have (on average 3.367710953578779) internal successors, (14727), 4373 states have internal predecessors, (14727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:09,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 14727 transitions. [2021-06-05 17:16:09,751 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 14727 transitions. Word has length 39 [2021-06-05 17:16:09,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:09,751 INFO L482 AbstractCegarLoop]: Abstraction has 4374 states and 14727 transitions. [2021-06-05 17:16:09,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:09,751 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 14727 transitions. [2021-06-05 17:16:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:09,756 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:09,756 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:09,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-06-05 17:16:09,756 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:09,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:09,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1270395994, now seen corresponding path program 264 times [2021-06-05 17:16:09,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:09,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523807909] [2021-06-05 17:16:09,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:09,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:09,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523807909] [2021-06-05 17:16:09,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523807909] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:09,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:09,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:09,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434406591] [2021-06-05 17:16:09,937 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:09,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:09,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:09,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:09,937 INFO L87 Difference]: Start difference. First operand 4374 states and 14727 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:11,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:11,029 INFO L93 Difference]: Finished difference Result 4679 states and 15690 transitions. [2021-06-05 17:16:11,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 17:16:11,029 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:11,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:11,036 INFO L225 Difference]: With dead ends: 4679 [2021-06-05 17:16:11,036 INFO L226 Difference]: Without dead ends: 4616 [2021-06-05 17:16:11,036 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 657.4ms TimeCoverageRelationStatistics Valid=198, Invalid=1872, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 17:16:11,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4616 states. [2021-06-05 17:16:11,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4616 to 4356. [2021-06-05 17:16:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4356 states, 4355 states have (on average 3.371756601607348) internal successors, (14684), 4355 states have internal predecessors, (14684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:11,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4356 states to 4356 states and 14684 transitions. [2021-06-05 17:16:11,089 INFO L78 Accepts]: Start accepts. Automaton has 4356 states and 14684 transitions. Word has length 39 [2021-06-05 17:16:11,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:11,089 INFO L482 AbstractCegarLoop]: Abstraction has 4356 states and 14684 transitions. [2021-06-05 17:16:11,089 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) [2021-06-05 17:16:11,089 INFO L276 IsEmpty]: Start isEmpty. Operand 4356 states and 14684 transitions. [2021-06-05 17:16:11,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:11,093 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:11,093 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:11,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-06-05 17:16:11,093 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:11,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:11,094 INFO L82 PathProgramCache]: Analyzing trace with hash -742839814, now seen corresponding path program 265 times [2021-06-05 17:16:11,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:11,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230831190] [2021-06-05 17:16:11,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:11,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:11,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230831190] [2021-06-05 17:16:11,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230831190] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:11,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:11,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:11,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70628074] [2021-06-05 17:16:11,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:11,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:11,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:11,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:11,276 INFO L87 Difference]: Start difference. First operand 4356 states and 14684 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:12,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:12,486 INFO L93 Difference]: Finished difference Result 4742 states and 15847 transitions. [2021-06-05 17:16:12,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 17:16:12,487 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:12,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:12,494 INFO L225 Difference]: With dead ends: 4742 [2021-06-05 17:16:12,494 INFO L226 Difference]: Without dead ends: 4687 [2021-06-05 17:16:12,494 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 770.8ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:16:12,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4687 states. [2021-06-05 17:16:12,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4687 to 4362. [2021-06-05 17:16:12,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4362 states, 4361 states have (on average 3.370098601238248) internal successors, (14697), 4361 states have internal predecessors, (14697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:12,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4362 states to 4362 states and 14697 transitions. [2021-06-05 17:16:12,551 INFO L78 Accepts]: Start accepts. Automaton has 4362 states and 14697 transitions. Word has length 39 [2021-06-05 17:16:12,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:12,551 INFO L482 AbstractCegarLoop]: Abstraction has 4362 states and 14697 transitions. [2021-06-05 17:16:12,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:12,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4362 states and 14697 transitions. [2021-06-05 17:16:12,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:12,555 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:12,555 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:12,555 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-06-05 17:16:12,555 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:12,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:12,556 INFO L82 PathProgramCache]: Analyzing trace with hash 594218200, now seen corresponding path program 266 times [2021-06-05 17:16:12,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:12,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953200991] [2021-06-05 17:16:12,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:12,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:12,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953200991] [2021-06-05 17:16:12,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953200991] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:12,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:12,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:12,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105843042] [2021-06-05 17:16:12,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:12,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:12,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:12,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:12,734 INFO L87 Difference]: Start difference. First operand 4362 states and 14697 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:13,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:13,884 INFO L93 Difference]: Finished difference Result 4718 states and 15777 transitions. [2021-06-05 17:16:13,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:16:13,884 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:13,891 INFO L225 Difference]: With dead ends: 4718 [2021-06-05 17:16:13,891 INFO L226 Difference]: Without dead ends: 4675 [2021-06-05 17:16:13,891 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 712.5ms TimeCoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 17:16:13,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2021-06-05 17:16:13,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4368. [2021-06-05 17:16:13,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 4367 states have (on average 3.368445156858255) internal successors, (14710), 4367 states have internal predecessors, (14710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:13,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 14710 transitions. [2021-06-05 17:16:13,950 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 14710 transitions. Word has length 39 [2021-06-05 17:16:13,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:13,950 INFO L482 AbstractCegarLoop]: Abstraction has 4368 states and 14710 transitions. [2021-06-05 17:16:13,950 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:13,951 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 14710 transitions. [2021-06-05 17:16:13,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:13,955 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:13,955 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:13,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-06-05 17:16:13,956 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:13,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:13,956 INFO L82 PathProgramCache]: Analyzing trace with hash 322798650, now seen corresponding path program 267 times [2021-06-05 17:16:13,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:13,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612000500] [2021-06-05 17:16:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:14,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:14,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:14,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612000500] [2021-06-05 17:16:14,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612000500] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:14,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:14,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:14,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238159558] [2021-06-05 17:16:14,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:14,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:14,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:14,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:14,137 INFO L87 Difference]: Start difference. First operand 4368 states and 14710 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:15,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:15,258 INFO L93 Difference]: Finished difference Result 4673 states and 15673 transitions. [2021-06-05 17:16:15,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 17:16:15,259 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:15,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:15,266 INFO L225 Difference]: With dead ends: 4673 [2021-06-05 17:16:15,266 INFO L226 Difference]: Without dead ends: 4612 [2021-06-05 17:16:15,266 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 691.3ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:16:15,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4612 states. [2021-06-05 17:16:15,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4612 to 4352. [2021-06-05 17:16:15,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4352 states, 4351 states have (on average 3.3725580326361757) internal successors, (14674), 4351 states have internal predecessors, (14674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:15,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 14674 transitions. [2021-06-05 17:16:15,325 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 14674 transitions. Word has length 39 [2021-06-05 17:16:15,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:15,325 INFO L482 AbstractCegarLoop]: Abstraction has 4352 states and 14674 transitions. [2021-06-05 17:16:15,325 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) [2021-06-05 17:16:15,325 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 14674 transitions. [2021-06-05 17:16:15,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:15,330 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:15,330 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:15,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-06-05 17:16:15,330 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:15,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:15,330 INFO L82 PathProgramCache]: Analyzing trace with hash -918380712, now seen corresponding path program 268 times [2021-06-05 17:16:15,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:15,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543879623] [2021-06-05 17:16:15,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:15,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:15,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:15,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543879623] [2021-06-05 17:16:15,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543879623] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:15,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:15,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:15,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715496550] [2021-06-05 17:16:15,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:15,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:15,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:15,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:15,514 INFO L87 Difference]: Start difference. First operand 4352 states and 14674 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:16,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:16,717 INFO L93 Difference]: Finished difference Result 4727 states and 15830 transitions. [2021-06-05 17:16:16,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 17:16:16,718 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:16,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:16,725 INFO L225 Difference]: With dead ends: 4727 [2021-06-05 17:16:16,725 INFO L226 Difference]: Without dead ends: 4636 [2021-06-05 17:16:16,725 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 735.9ms TimeCoverageRelationStatistics Valid=228, Invalid=2124, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 17:16:16,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4636 states. [2021-06-05 17:16:16,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4636 to 4358. [2021-06-05 17:16:16,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4358 states, 4357 states have (on average 3.3713564379159973) internal successors, (14689), 4357 states have internal predecessors, (14689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4358 states to 4358 states and 14689 transitions. [2021-06-05 17:16:16,786 INFO L78 Accepts]: Start accepts. Automaton has 4358 states and 14689 transitions. Word has length 39 [2021-06-05 17:16:16,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:16,786 INFO L482 AbstractCegarLoop]: Abstraction has 4358 states and 14689 transitions. [2021-06-05 17:16:16,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:16,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4358 states and 14689 transitions. [2021-06-05 17:16:16,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:16,791 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:16,791 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:16,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-06-05 17:16:16,791 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:16,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:16,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1123937882, now seen corresponding path program 269 times [2021-06-05 17:16:16,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:16,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715545627] [2021-06-05 17:16:16,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:16,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:16,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:16,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715545627] [2021-06-05 17:16:16,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715545627] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:16,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:16,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:16,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258135176] [2021-06-05 17:16:16,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:16,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:16,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:16,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:16,979 INFO L87 Difference]: Start difference. First operand 4358 states and 14689 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:18,217 INFO L93 Difference]: Finished difference Result 4758 states and 15877 transitions. [2021-06-05 17:16:18,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 17:16:18,217 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:18,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:18,225 INFO L225 Difference]: With dead ends: 4758 [2021-06-05 17:16:18,225 INFO L226 Difference]: Without dead ends: 4703 [2021-06-05 17:16:18,225 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 778.7ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:16:18,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4703 states. [2021-06-05 17:16:18,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4703 to 4376. [2021-06-05 17:16:18,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 3.365942857142857) internal successors, (14726), 4375 states have internal predecessors, (14726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:18,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 14726 transitions. [2021-06-05 17:16:18,283 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 14726 transitions. Word has length 39 [2021-06-05 17:16:18,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:18,283 INFO L482 AbstractCegarLoop]: Abstraction has 4376 states and 14726 transitions. [2021-06-05 17:16:18,283 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) [2021-06-05 17:16:18,283 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 14726 transitions. [2021-06-05 17:16:18,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:18,288 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:18,288 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:18,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-06-05 17:16:18,288 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:18,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:18,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1833971400, now seen corresponding path program 270 times [2021-06-05 17:16:18,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:18,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685457650] [2021-06-05 17:16:18,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:18,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:18,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685457650] [2021-06-05 17:16:18,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685457650] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:18,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:18,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:18,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958562613] [2021-06-05 17:16:18,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:18,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:18,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:18,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:18,520 INFO L87 Difference]: Start difference. First operand 4376 states and 14726 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:19,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:19,681 INFO L93 Difference]: Finished difference Result 4734 states and 15807 transitions. [2021-06-05 17:16:19,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 17:16:19,681 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:19,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:19,689 INFO L225 Difference]: With dead ends: 4734 [2021-06-05 17:16:19,689 INFO L226 Difference]: Without dead ends: 4691 [2021-06-05 17:16:19,690 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 738.5ms TimeCoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 17:16:19,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2021-06-05 17:16:19,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 4382. [2021-06-05 17:16:19,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 3.3643003880392603) internal successors, (14739), 4381 states have internal predecessors, (14739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:19,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 14739 transitions. [2021-06-05 17:16:19,747 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 14739 transitions. Word has length 39 [2021-06-05 17:16:19,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:19,748 INFO L482 AbstractCegarLoop]: Abstraction has 4382 states and 14739 transitions. [2021-06-05 17:16:19,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:19,748 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 14739 transitions. [2021-06-05 17:16:19,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:19,752 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:19,752 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:19,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-06-05 17:16:19,753 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:19,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:19,753 INFO L82 PathProgramCache]: Analyzing trace with hash -2105390950, now seen corresponding path program 271 times [2021-06-05 17:16:19,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:19,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961243648] [2021-06-05 17:16:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:19,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:19,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961243648] [2021-06-05 17:16:19,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961243648] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:19,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:19,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:19,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165148928] [2021-06-05 17:16:19,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:19,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:19,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:19,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:19,934 INFO L87 Difference]: Start difference. First operand 4382 states and 14739 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:21,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:21,075 INFO L93 Difference]: Finished difference Result 4689 states and 15703 transitions. [2021-06-05 17:16:21,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 17:16:21,075 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:21,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:21,082 INFO L225 Difference]: With dead ends: 4689 [2021-06-05 17:16:21,082 INFO L226 Difference]: Without dead ends: 4598 [2021-06-05 17:16:21,082 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 710.4ms TimeCoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 17:16:21,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4598 states. [2021-06-05 17:16:21,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4598 to 4336. [2021-06-05 17:16:21,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4336 states, 4335 states have (on average 3.3753171856978086) internal successors, (14632), 4335 states have internal predecessors, (14632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:21,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4336 states to 4336 states and 14632 transitions. [2021-06-05 17:16:21,159 INFO L78 Accepts]: Start accepts. Automaton has 4336 states and 14632 transitions. Word has length 39 [2021-06-05 17:16:21,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:21,159 INFO L482 AbstractCegarLoop]: Abstraction has 4336 states and 14632 transitions. [2021-06-05 17:16:21,159 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) [2021-06-05 17:16:21,159 INFO L276 IsEmpty]: Start isEmpty. Operand 4336 states and 14632 transitions. [2021-06-05 17:16:21,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:21,163 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:21,163 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:21,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-06-05 17:16:21,164 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:21,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:21,164 INFO L82 PathProgramCache]: Analyzing trace with hash 563047592, now seen corresponding path program 272 times [2021-06-05 17:16:21,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:21,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610297504] [2021-06-05 17:16:21,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:21,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:21,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:21,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610297504] [2021-06-05 17:16:21,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610297504] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:21,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:21,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:21,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41684573] [2021-06-05 17:16:21,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:21,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:21,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:21,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:21,342 INFO L87 Difference]: Start difference. First operand 4336 states and 14632 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:23,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:23,277 INFO L93 Difference]: Finished difference Result 6700 states and 22296 transitions. [2021-06-05 17:16:23,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 17:16:23,277 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:23,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:23,287 INFO L225 Difference]: With dead ends: 6700 [2021-06-05 17:16:23,287 INFO L226 Difference]: Without dead ends: 6645 [2021-06-05 17:16:23,288 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1395 ImplicationChecksByTransitivity, 1180.5ms TimeCoverageRelationStatistics Valid=433, Invalid=4537, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 17:16:23,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6645 states. [2021-06-05 17:16:23,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6645 to 4355. [2021-06-05 17:16:23,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4355 states, 4354 states have (on average 3.3759761139182363) internal successors, (14699), 4354 states have internal predecessors, (14699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:23,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 14699 transitions. [2021-06-05 17:16:23,351 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 14699 transitions. Word has length 39 [2021-06-05 17:16:23,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:23,352 INFO L482 AbstractCegarLoop]: Abstraction has 4355 states and 14699 transitions. [2021-06-05 17:16:23,352 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) [2021-06-05 17:16:23,352 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 14699 transitions. [2021-06-05 17:16:23,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:23,356 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:23,356 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:23,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-06-05 17:16:23,356 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:23,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:23,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1735699814, now seen corresponding path program 273 times [2021-06-05 17:16:23,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:23,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112518086] [2021-06-05 17:16:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:23,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:23,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:23,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112518086] [2021-06-05 17:16:23,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112518086] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:23,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:23,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:23,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681814667] [2021-06-05 17:16:23,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:23,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:23,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:23,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:23,542 INFO L87 Difference]: Start difference. First operand 4355 states and 14699 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:25,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:25,813 INFO L93 Difference]: Finished difference Result 7470 states and 24893 transitions. [2021-06-05 17:16:25,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 17:16:25,813 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:25,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:25,824 INFO L225 Difference]: With dead ends: 7470 [2021-06-05 17:16:25,824 INFO L226 Difference]: Without dead ends: 7347 [2021-06-05 17:16:25,825 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1721 ImplicationChecksByTransitivity, 1364.9ms TimeCoverageRelationStatistics Valid=480, Invalid=5372, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 17:16:25,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7347 states. [2021-06-05 17:16:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7347 to 4359. [2021-06-05 17:16:25,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4359 states, 4358 states have (on average 3.3765488756310233) internal successors, (14715), 4358 states have internal predecessors, (14715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:25,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4359 states to 4359 states and 14715 transitions. [2021-06-05 17:16:25,894 INFO L78 Accepts]: Start accepts. Automaton has 4359 states and 14715 transitions. Word has length 39 [2021-06-05 17:16:25,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:25,894 INFO L482 AbstractCegarLoop]: Abstraction has 4359 states and 14715 transitions. [2021-06-05 17:16:25,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:25,894 INFO L276 IsEmpty]: Start isEmpty. Operand 4359 states and 14715 transitions. [2021-06-05 17:16:25,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:25,898 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:25,898 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:25,898 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-06-05 17:16:25,898 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:25,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:25,899 INFO L82 PathProgramCache]: Analyzing trace with hash 758773620, now seen corresponding path program 274 times [2021-06-05 17:16:25,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:25,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84643832] [2021-06-05 17:16:25,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:26,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:26,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84643832] [2021-06-05 17:16:26,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84643832] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:26,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:26,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:26,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158110171] [2021-06-05 17:16:26,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:26,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:26,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:26,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:26,082 INFO L87 Difference]: Start difference. First operand 4359 states and 14715 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:27,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:27,891 INFO L93 Difference]: Finished difference Result 6599 states and 22019 transitions. [2021-06-05 17:16:27,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 17:16:27,891 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:27,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:27,901 INFO L225 Difference]: With dead ends: 6599 [2021-06-05 17:16:27,901 INFO L226 Difference]: Without dead ends: 6508 [2021-06-05 17:16:27,901 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 1071.9ms TimeCoverageRelationStatistics Valid=374, Invalid=3916, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 17:16:27,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6508 states. [2021-06-05 17:16:27,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6508 to 4365. [2021-06-05 17:16:27,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4365 states, 4364 states have (on average 3.3739688359303392) internal successors, (14724), 4364 states have internal predecessors, (14724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 14724 transitions. [2021-06-05 17:16:27,970 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 14724 transitions. Word has length 39 [2021-06-05 17:16:27,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:27,970 INFO L482 AbstractCegarLoop]: Abstraction has 4365 states and 14724 transitions. [2021-06-05 17:16:27,970 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) [2021-06-05 17:16:27,970 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 14724 transitions. [2021-06-05 17:16:27,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:27,974 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:27,975 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:27,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-06-05 17:16:27,975 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:27,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:27,975 INFO L82 PathProgramCache]: Analyzing trace with hash -743708586, now seen corresponding path program 275 times [2021-06-05 17:16:27,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:27,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483187418] [2021-06-05 17:16:27,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:28,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:28,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483187418] [2021-06-05 17:16:28,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483187418] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:28,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:28,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:28,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133956738] [2021-06-05 17:16:28,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:28,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:28,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:28,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:28,155 INFO L87 Difference]: Start difference. First operand 4365 states and 14724 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:30,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:30,304 INFO L93 Difference]: Finished difference Result 7458 states and 24916 transitions. [2021-06-05 17:16:30,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 17:16:30,304 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:30,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:30,315 INFO L225 Difference]: With dead ends: 7458 [2021-06-05 17:16:30,315 INFO L226 Difference]: Without dead ends: 7358 [2021-06-05 17:16:30,315 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 1208.2ms TimeCoverageRelationStatistics Valid=409, Invalid=4561, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 17:16:30,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7358 states. [2021-06-05 17:16:30,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7358 to 4353. [2021-06-05 17:16:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4353 states, 4352 states have (on average 3.374080882352941) internal successors, (14684), 4352 states have internal predecessors, (14684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4353 states to 4353 states and 14684 transitions. [2021-06-05 17:16:30,382 INFO L78 Accepts]: Start accepts. Automaton has 4353 states and 14684 transitions. Word has length 39 [2021-06-05 17:16:30,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:30,382 INFO L482 AbstractCegarLoop]: Abstraction has 4353 states and 14684 transitions. [2021-06-05 17:16:30,382 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:30,382 INFO L276 IsEmpty]: Start isEmpty. Operand 4353 states and 14684 transitions. [2021-06-05 17:16:30,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:30,387 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:30,387 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:30,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-06-05 17:16:30,387 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:30,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:30,387 INFO L82 PathProgramCache]: Analyzing trace with hash 431162154, now seen corresponding path program 276 times [2021-06-05 17:16:30,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:30,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609450920] [2021-06-05 17:16:30,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:30,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:30,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:30,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609450920] [2021-06-05 17:16:30,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609450920] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:30,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:30,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:30,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219669735] [2021-06-05 17:16:30,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:30,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:30,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:30,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:30,569 INFO L87 Difference]: Start difference. First operand 4353 states and 14684 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:32,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:32,412 INFO L93 Difference]: Finished difference Result 4944 states and 16360 transitions. [2021-06-05 17:16:32,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 17:16:32,413 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:32,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:32,420 INFO L225 Difference]: With dead ends: 4944 [2021-06-05 17:16:32,420 INFO L226 Difference]: Without dead ends: 4889 [2021-06-05 17:16:32,420 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 1280.1ms TimeCoverageRelationStatistics Valid=414, Invalid=4278, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 17:16:32,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4889 states. [2021-06-05 17:16:32,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4889 to 4379. [2021-06-05 17:16:32,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 4378 states have (on average 3.366605756052992) internal successors, (14739), 4378 states have internal predecessors, (14739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 14739 transitions. [2021-06-05 17:16:32,472 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 14739 transitions. Word has length 39 [2021-06-05 17:16:32,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:32,472 INFO L482 AbstractCegarLoop]: Abstraction has 4379 states and 14739 transitions. [2021-06-05 17:16:32,472 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) [2021-06-05 17:16:32,472 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 14739 transitions. [2021-06-05 17:16:32,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:32,476 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:32,476 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:32,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-06-05 17:16:32,477 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:32,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:32,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1603814376, now seen corresponding path program 277 times [2021-06-05 17:16:32,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:32,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781182610] [2021-06-05 17:16:32,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:32,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:32,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:32,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781182610] [2021-06-05 17:16:32,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781182610] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:32,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:32,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:32,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940291674] [2021-06-05 17:16:32,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:32,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:32,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:32,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:32,658 INFO L87 Difference]: Start difference. First operand 4379 states and 14739 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:34,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:34,388 INFO L93 Difference]: Finished difference Result 4896 states and 16242 transitions. [2021-06-05 17:16:34,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 17:16:34,388 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:34,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:34,395 INFO L225 Difference]: With dead ends: 4896 [2021-06-05 17:16:34,395 INFO L226 Difference]: Without dead ends: 4836 [2021-06-05 17:16:34,395 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1093 ImplicationChecksByTransitivity, 1207.9ms TimeCoverageRelationStatistics Valid=385, Invalid=3775, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 17:16:34,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4836 states. [2021-06-05 17:16:34,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4836 to 4385. [2021-06-05 17:16:34,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 4384 states have (on average 3.365647810218978) internal successors, (14755), 4384 states have internal predecessors, (14755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:34,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 14755 transitions. [2021-06-05 17:16:34,449 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 14755 transitions. Word has length 39 [2021-06-05 17:16:34,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:34,449 INFO L482 AbstractCegarLoop]: Abstraction has 4385 states and 14755 transitions. [2021-06-05 17:16:34,449 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:34,449 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 14755 transitions. [2021-06-05 17:16:34,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:34,454 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:34,454 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:34,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-06-05 17:16:34,454 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:34,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:34,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1536069496, now seen corresponding path program 278 times [2021-06-05 17:16:34,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:34,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463299064] [2021-06-05 17:16:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:34,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:34,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463299064] [2021-06-05 17:16:34,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463299064] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:34,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:34,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:34,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270659061] [2021-06-05 17:16:34,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:34,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:34,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:34,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:34,663 INFO L87 Difference]: Start difference. First operand 4385 states and 14755 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:36,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:36,325 INFO L93 Difference]: Finished difference Result 4849 states and 16104 transitions. [2021-06-05 17:16:36,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 17:16:36,326 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 [2021-06-05 17:16:36,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:36,333 INFO L225 Difference]: With dead ends: 4849 [2021-06-05 17:16:36,333 INFO L226 Difference]: Without dead ends: 4806 [2021-06-05 17:16:36,334 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 1127.8ms TimeCoverageRelationStatistics Valid=346, Invalid=3560, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 17:16:36,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4806 states. [2021-06-05 17:16:36,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4806 to 4391. [2021-06-05 17:16:36,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 4390 states have (on average 3.364009111617312) internal successors, (14768), 4390 states have internal predecessors, (14768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:36,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 14768 transitions. [2021-06-05 17:16:36,414 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 14768 transitions. Word has length 39 [2021-06-05 17:16:36,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:36,414 INFO L482 AbstractCegarLoop]: Abstraction has 4391 states and 14768 transitions. [2021-06-05 17:16:36,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:36,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 14768 transitions. [2021-06-05 17:16:36,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:36,419 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:36,419 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:36,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-06-05 17:16:36,419 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:36,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:36,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1008790664, now seen corresponding path program 279 times [2021-06-05 17:16:36,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:36,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452720255] [2021-06-05 17:16:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:36,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:36,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:36,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452720255] [2021-06-05 17:16:36,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452720255] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:36,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:36,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:36,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312341605] [2021-06-05 17:16:36,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:36,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:36,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:36,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:36,602 INFO L87 Difference]: Start difference. First operand 4391 states and 14768 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:38,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:38,222 INFO L93 Difference]: Finished difference Result 4852 states and 16125 transitions. [2021-06-05 17:16:38,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 17:16:38,223 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:38,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:38,230 INFO L225 Difference]: With dead ends: 4852 [2021-06-05 17:16:38,230 INFO L226 Difference]: Without dead ends: 4801 [2021-06-05 17:16:38,230 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 1070.4ms TimeCoverageRelationStatistics Valid=331, Invalid=3329, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 17:16:38,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2021-06-05 17:16:38,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4391. [2021-06-05 17:16:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4391 states, 4390 states have (on average 3.3633257403189067) internal successors, (14765), 4390 states have internal predecessors, (14765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:38,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 14765 transitions. [2021-06-05 17:16:38,285 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 14765 transitions. Word has length 39 [2021-06-05 17:16:38,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:38,285 INFO L482 AbstractCegarLoop]: Abstraction has 4391 states and 14765 transitions. [2021-06-05 17:16:38,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:38,286 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 14765 transitions. [2021-06-05 17:16:38,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:38,290 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:38,290 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:38,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-06-05 17:16:38,290 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:38,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:38,291 INFO L82 PathProgramCache]: Analyzing trace with hash -391572262, now seen corresponding path program 280 times [2021-06-05 17:16:38,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:38,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129616723] [2021-06-05 17:16:38,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:38,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:38,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129616723] [2021-06-05 17:16:38,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129616723] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:38,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:38,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:38,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487316053] [2021-06-05 17:16:38,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:38,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:38,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:38,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:38,494 INFO L87 Difference]: Start difference. First operand 4391 states and 14765 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:40,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:40,143 INFO L93 Difference]: Finished difference Result 4845 states and 16081 transitions. [2021-06-05 17:16:40,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 17:16:40,143 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:40,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:40,150 INFO L225 Difference]: With dead ends: 4845 [2021-06-05 17:16:40,150 INFO L226 Difference]: Without dead ends: 4799 [2021-06-05 17:16:40,150 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1109.7ms TimeCoverageRelationStatistics Valid=335, Invalid=3325, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 17:16:40,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2021-06-05 17:16:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 4398. [2021-06-05 17:16:40,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4398 states, 4397 states have (on average 3.361382760973391) internal successors, (14780), 4397 states have internal predecessors, (14780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4398 states to 4398 states and 14780 transitions. [2021-06-05 17:16:40,205 INFO L78 Accepts]: Start accepts. Automaton has 4398 states and 14780 transitions. Word has length 39 [2021-06-05 17:16:40,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:40,205 INFO L482 AbstractCegarLoop]: Abstraction has 4398 states and 14780 transitions. [2021-06-05 17:16:40,205 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) [2021-06-05 17:16:40,206 INFO L276 IsEmpty]: Start isEmpty. Operand 4398 states and 14780 transitions. [2021-06-05 17:16:40,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:40,210 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:40,210 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:40,210 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-06-05 17:16:40,211 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:40,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:40,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1826639752, now seen corresponding path program 281 times [2021-06-05 17:16:40,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:40,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330478730] [2021-06-05 17:16:40,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:40,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:40,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330478730] [2021-06-05 17:16:40,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330478730] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:40,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:40,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:40,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179147781] [2021-06-05 17:16:40,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:40,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:40,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:40,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:40,389 INFO L87 Difference]: Start difference. First operand 4398 states and 14780 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:41,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:41,933 INFO L93 Difference]: Finished difference Result 4838 states and 16078 transitions. [2021-06-05 17:16:41,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 17:16:41,934 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:41,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:41,941 INFO L225 Difference]: With dead ends: 4838 [2021-06-05 17:16:41,941 INFO L226 Difference]: Without dead ends: 4783 [2021-06-05 17:16:41,941 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 1012.2ms TimeCoverageRelationStatistics Valid=331, Invalid=3329, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 17:16:41,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2021-06-05 17:16:41,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4395. [2021-06-05 17:16:41,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4395 states, 4394 states have (on average 3.3623122439690487) internal successors, (14774), 4394 states have internal predecessors, (14774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:41,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 14774 transitions. [2021-06-05 17:16:41,994 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 14774 transitions. Word has length 39 [2021-06-05 17:16:41,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:41,994 INFO L482 AbstractCegarLoop]: Abstraction has 4395 states and 14774 transitions. [2021-06-05 17:16:41,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:41,995 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 14774 transitions. [2021-06-05 17:16:41,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:41,999 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:42,000 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:42,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-06-05 17:16:42,000 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:42,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:42,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1185624426, now seen corresponding path program 282 times [2021-06-05 17:16:42,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:42,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527784249] [2021-06-05 17:16:42,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:42,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:42,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527784249] [2021-06-05 17:16:42,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527784249] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:42,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:42,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:42,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671413590] [2021-06-05 17:16:42,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:42,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:42,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:42,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:42,178 INFO L87 Difference]: Start difference. First operand 4395 states and 14774 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:43,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:43,827 INFO L93 Difference]: Finished difference Result 4891 states and 16194 transitions. [2021-06-05 17:16:43,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 17:16:43,828 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 [2021-06-05 17:16:43,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:43,834 INFO L225 Difference]: With dead ends: 4891 [2021-06-05 17:16:43,835 INFO L226 Difference]: Without dead ends: 4834 [2021-06-05 17:16:43,835 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 1095.1ms TimeCoverageRelationStatistics Valid=344, Invalid=3562, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 17:16:43,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2021-06-05 17:16:43,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4395. [2021-06-05 17:16:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4395 states, 4394 states have (on average 3.362084660901229) internal successors, (14773), 4394 states have internal predecessors, (14773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:43,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 14773 transitions. [2021-06-05 17:16:43,888 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 14773 transitions. Word has length 39 [2021-06-05 17:16:43,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:43,888 INFO L482 AbstractCegarLoop]: Abstraction has 4395 states and 14773 transitions. [2021-06-05 17:16:43,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:43,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 14773 transitions. [2021-06-05 17:16:43,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:43,892 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:43,892 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:43,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-06-05 17:16:43,892 INFO L430 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:43,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:43,893 INFO L82 PathProgramCache]: Analyzing trace with hash -531853754, now seen corresponding path program 283 times [2021-06-05 17:16:43,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:43,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610006772] [2021-06-05 17:16:43,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:44,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:44,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610006772] [2021-06-05 17:16:44,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610006772] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:44,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:44,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:44,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231543510] [2021-06-05 17:16:44,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:44,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:44,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:44,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:44,096 INFO L87 Difference]: Start difference. First operand 4395 states and 14773 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:45,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:45,746 INFO L93 Difference]: Finished difference Result 4892 states and 16195 transitions. [2021-06-05 17:16:45,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 17:16:45,746 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 [2021-06-05 17:16:45,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:45,754 INFO L225 Difference]: With dead ends: 4892 [2021-06-05 17:16:45,754 INFO L226 Difference]: Without dead ends: 4833 [2021-06-05 17:16:45,754 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 1114.1ms TimeCoverageRelationStatistics Valid=346, Invalid=3560, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 17:16:45,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4833 states. [2021-06-05 17:16:45,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4833 to 4394. [2021-06-05 17:16:45,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4394 states, 4393 states have (on average 3.362394718870931) internal successors, (14771), 4393 states have internal predecessors, (14771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:45,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4394 states to 4394 states and 14771 transitions. [2021-06-05 17:16:45,807 INFO L78 Accepts]: Start accepts. Automaton has 4394 states and 14771 transitions. Word has length 39 [2021-06-05 17:16:45,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:45,807 INFO L482 AbstractCegarLoop]: Abstraction has 4394 states and 14771 transitions. [2021-06-05 17:16:45,807 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:45,807 INFO L276 IsEmpty]: Start isEmpty. Operand 4394 states and 14771 transitions. [2021-06-05 17:16:45,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:45,812 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:45,812 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:45,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-06-05 17:16:45,812 INFO L430 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:45,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:45,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1770586282, now seen corresponding path program 284 times [2021-06-05 17:16:45,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:45,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741210221] [2021-06-05 17:16:45,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:45,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:45,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:45,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741210221] [2021-06-05 17:16:45,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741210221] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:45,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:45,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:45,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493862927] [2021-06-05 17:16:45,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:45,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:45,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:45,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:45,992 INFO L87 Difference]: Start difference. First operand 4394 states and 14771 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:47,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:47,354 INFO L93 Difference]: Finished difference Result 4793 states and 15944 transitions. [2021-06-05 17:16:47,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 17:16:47,354 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:47,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:47,362 INFO L225 Difference]: With dead ends: 4793 [2021-06-05 17:16:47,362 INFO L226 Difference]: Without dead ends: 4718 [2021-06-05 17:16:47,362 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 863.4ms TimeCoverageRelationStatistics Valid=281, Invalid=2799, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:16:47,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4718 states. [2021-06-05 17:16:47,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4718 to 4380. [2021-06-05 17:16:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4380 states, 4379 states have (on average 3.3649234985156427) internal successors, (14735), 4379 states have internal predecessors, (14735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:47,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4380 states to 4380 states and 14735 transitions. [2021-06-05 17:16:47,416 INFO L78 Accepts]: Start accepts. Automaton has 4380 states and 14735 transitions. Word has length 39 [2021-06-05 17:16:47,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:47,416 INFO L482 AbstractCegarLoop]: Abstraction has 4380 states and 14735 transitions. [2021-06-05 17:16:47,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:47,416 INFO L276 IsEmpty]: Start isEmpty. Operand 4380 states and 14735 transitions. [2021-06-05 17:16:47,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:47,420 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:47,420 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:47,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-06-05 17:16:47,421 INFO L430 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:47,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:47,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1606839466, now seen corresponding path program 285 times [2021-06-05 17:16:47,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:47,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147103920] [2021-06-05 17:16:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:47,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:47,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147103920] [2021-06-05 17:16:47,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147103920] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:47,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:47,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:47,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008741953] [2021-06-05 17:16:47,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:47,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:47,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:47,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:47,601 INFO L87 Difference]: Start difference. First operand 4380 states and 14735 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:48,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:48,999 INFO L93 Difference]: Finished difference Result 4694 states and 15714 transitions. [2021-06-05 17:16:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 17:16:48,999 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:49,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:49,007 INFO L225 Difference]: With dead ends: 4694 [2021-06-05 17:16:49,007 INFO L226 Difference]: Without dead ends: 4607 [2021-06-05 17:16:49,007 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 897.6ms TimeCoverageRelationStatistics Valid=279, Invalid=2691, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 17:16:49,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4607 states. [2021-06-05 17:16:49,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4607 to 4338. [2021-06-05 17:16:49,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4338 states, 4337 states have (on average 3.3760664053493197) internal successors, (14642), 4337 states have internal predecessors, (14642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:49,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4338 states to 4338 states and 14642 transitions. [2021-06-05 17:16:49,062 INFO L78 Accepts]: Start accepts. Automaton has 4338 states and 14642 transitions. Word has length 39 [2021-06-05 17:16:49,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:49,062 INFO L482 AbstractCegarLoop]: Abstraction has 4338 states and 14642 transitions. [2021-06-05 17:16:49,062 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) [2021-06-05 17:16:49,062 INFO L276 IsEmpty]: Start isEmpty. Operand 4338 states and 14642 transitions. [2021-06-05 17:16:49,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:49,066 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:49,067 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:49,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-06-05 17:16:49,067 INFO L430 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:49,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:49,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1645436618, now seen corresponding path program 286 times [2021-06-05 17:16:49,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:49,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600342279] [2021-06-05 17:16:49,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:49,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:49,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600342279] [2021-06-05 17:16:49,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600342279] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:49,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:49,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:16:49,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803835355] [2021-06-05 17:16:49,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:16:49,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:49,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:16:49,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:16:49,233 INFO L87 Difference]: Start difference. First operand 4338 states and 14642 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:50,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:50,873 INFO L93 Difference]: Finished difference Result 5466 states and 18495 transitions. [2021-06-05 17:16:50,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 17:16:50,874 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:50,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:50,881 INFO L225 Difference]: With dead ends: 5466 [2021-06-05 17:16:50,882 INFO L226 Difference]: Without dead ends: 5399 [2021-06-05 17:16:50,882 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 1029.9ms TimeCoverageRelationStatistics Valid=340, Invalid=3200, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 17:16:50,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5399 states. [2021-06-05 17:16:50,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5399 to 4476. [2021-06-05 17:16:50,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4475 states have (on average 3.373854748603352) internal successors, (15098), 4475 states have internal predecessors, (15098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:50,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 15098 transitions. [2021-06-05 17:16:50,938 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 15098 transitions. Word has length 39 [2021-06-05 17:16:50,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:50,938 INFO L482 AbstractCegarLoop]: Abstraction has 4476 states and 15098 transitions. [2021-06-05 17:16:50,938 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) [2021-06-05 17:16:50,938 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 15098 transitions. [2021-06-05 17:16:50,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:50,943 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:50,943 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:50,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-06-05 17:16:50,943 INFO L430 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:50,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:50,943 INFO L82 PathProgramCache]: Analyzing trace with hash -74179352, now seen corresponding path program 287 times [2021-06-05 17:16:50,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:50,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767137326] [2021-06-05 17:16:50,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:51,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:51,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767137326] [2021-06-05 17:16:51,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767137326] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:51,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:51,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:16:51,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750245854] [2021-06-05 17:16:51,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:16:51,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:51,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:16:51,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:16:51,108 INFO L87 Difference]: Start difference. First operand 4476 states and 15098 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:53,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:53,259 INFO L93 Difference]: Finished difference Result 5562 states and 18756 transitions. [2021-06-05 17:16:53,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 17:16:53,260 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:53,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:53,268 INFO L225 Difference]: With dead ends: 5562 [2021-06-05 17:16:53,268 INFO L226 Difference]: Without dead ends: 5519 [2021-06-05 17:16:53,268 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1583 ImplicationChecksByTransitivity, 1450.8ms TimeCoverageRelationStatistics Valid=476, Invalid=4926, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 17:16:53,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2021-06-05 17:16:53,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 4482. [2021-06-05 17:16:53,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 4481 states have (on average 3.372238339656327) internal successors, (15111), 4481 states have internal predecessors, (15111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 15111 transitions. [2021-06-05 17:16:53,364 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 15111 transitions. Word has length 39 [2021-06-05 17:16:53,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:53,364 INFO L482 AbstractCegarLoop]: Abstraction has 4482 states and 15111 transitions. [2021-06-05 17:16:53,364 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) [2021-06-05 17:16:53,365 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 15111 transitions. [2021-06-05 17:16:53,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:53,370 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:53,370 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:53,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-06-05 17:16:53,370 INFO L430 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:53,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:53,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1854777654, now seen corresponding path program 288 times [2021-06-05 17:16:53,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:53,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980121687] [2021-06-05 17:16:53,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:53,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:53,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980121687] [2021-06-05 17:16:53,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980121687] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:53,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:53,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:16:53,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819651273] [2021-06-05 17:16:53,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:16:53,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:53,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:16:53,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:16:53,531 INFO L87 Difference]: Start difference. First operand 4482 states and 15111 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:55,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:55,644 INFO L93 Difference]: Finished difference Result 5493 states and 18576 transitions. [2021-06-05 17:16:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 17:16:55,644 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:55,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:55,653 INFO L225 Difference]: With dead ends: 5493 [2021-06-05 17:16:55,653 INFO L226 Difference]: Without dead ends: 5429 [2021-06-05 17:16:55,653 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 1435.9ms TimeCoverageRelationStatistics Valid=469, Invalid=4787, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 17:16:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5429 states. [2021-06-05 17:16:55,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5429 to 4464. [2021-06-05 17:16:55,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4464 states, 4463 states have (on average 3.374411830607215) internal successors, (15060), 4463 states have internal predecessors, (15060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4464 states to 4464 states and 15060 transitions. [2021-06-05 17:16:55,713 INFO L78 Accepts]: Start accepts. Automaton has 4464 states and 15060 transitions. Word has length 39 [2021-06-05 17:16:55,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:55,713 INFO L482 AbstractCegarLoop]: Abstraction has 4464 states and 15060 transitions. [2021-06-05 17:16:55,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:55,713 INFO L276 IsEmpty]: Start isEmpty. Operand 4464 states and 15060 transitions. [2021-06-05 17:16:55,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:55,720 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:55,720 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:55,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-06-05 17:16:55,720 INFO L430 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:55,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:55,720 INFO L82 PathProgramCache]: Analyzing trace with hash 2031374026, now seen corresponding path program 289 times [2021-06-05 17:16:55,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:55,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015026725] [2021-06-05 17:16:55,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:55,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:55,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015026725] [2021-06-05 17:16:55,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015026725] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:55,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:55,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:16:55,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105830678] [2021-06-05 17:16:55,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:16:55,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:55,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:16:55,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:16:55,902 INFO L87 Difference]: Start difference. First operand 4464 states and 15060 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:57,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:16:57,905 INFO L93 Difference]: Finished difference Result 5504 states and 18584 transitions. [2021-06-05 17:16:57,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 17:16:57,905 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:16:57,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:16:57,913 INFO L225 Difference]: With dead ends: 5504 [2021-06-05 17:16:57,913 INFO L226 Difference]: Without dead ends: 5374 [2021-06-05 17:16:57,914 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 1308.1ms TimeCoverageRelationStatistics Valid=402, Invalid=4154, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 17:16:57,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5374 states. [2021-06-05 17:16:57,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5374 to 4440. [2021-06-05 17:16:57,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4440 states, 4439 states have (on average 3.376436134264474) internal successors, (14988), 4439 states have internal predecessors, (14988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:57,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 14988 transitions. [2021-06-05 17:16:57,972 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 14988 transitions. Word has length 39 [2021-06-05 17:16:57,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:16:57,973 INFO L482 AbstractCegarLoop]: Abstraction has 4440 states and 14988 transitions. [2021-06-05 17:16:57,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:16:57,973 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 14988 transitions. [2021-06-05 17:16:57,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:16:57,977 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:16:57,977 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:16:57,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-06-05 17:16:57,977 INFO L430 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:16:57,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:16:57,978 INFO L82 PathProgramCache]: Analyzing trace with hash -425641418, now seen corresponding path program 290 times [2021-06-05 17:16:57,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:16:57,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017360503] [2021-06-05 17:16:57,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:16:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:16:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:16:58,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:16:58,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017360503] [2021-06-05 17:16:58,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017360503] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:16:58,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:16:58,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:16:58,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510155235] [2021-06-05 17:16:58,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:16:58,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:16:58,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:16:58,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:16:58,160 INFO L87 Difference]: Start difference. First operand 4440 states and 14988 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:00,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:00,082 INFO L93 Difference]: Finished difference Result 5550 states and 18717 transitions. [2021-06-05 17:17:00,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 17:17:00,082 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:00,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:00,090 INFO L225 Difference]: With dead ends: 5550 [2021-06-05 17:17:00,091 INFO L226 Difference]: Without dead ends: 5483 [2021-06-05 17:17:00,091 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 1248.6ms TimeCoverageRelationStatistics Valid=427, Invalid=4265, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 17:17:00,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5483 states. [2021-06-05 17:17:00,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5483 to 4466. [2021-06-05 17:17:00,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.374468085106383) internal successors, (15067), 4465 states have internal predecessors, (15067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:00,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15067 transitions. [2021-06-05 17:17:00,152 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15067 transitions. Word has length 39 [2021-06-05 17:17:00,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:00,152 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15067 transitions. [2021-06-05 17:17:00,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:00,152 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15067 transitions. [2021-06-05 17:17:00,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:00,156 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:00,156 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:00,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-06-05 17:17:00,157 INFO L430 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:00,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:00,157 INFO L82 PathProgramCache]: Analyzing trace with hash -2145257388, now seen corresponding path program 291 times [2021-06-05 17:17:00,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:00,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049720794] [2021-06-05 17:17:00,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:00,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:00,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049720794] [2021-06-05 17:17:00,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049720794] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:00,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:00,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:00,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308905989] [2021-06-05 17:17:00,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:00,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:00,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:00,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:00,339 INFO L87 Difference]: Start difference. First operand 4466 states and 15067 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:02,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:02,780 INFO L93 Difference]: Finished difference Result 5679 states and 19044 transitions. [2021-06-05 17:17:02,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-06-05 17:17:02,780 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:02,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:02,789 INFO L225 Difference]: With dead ends: 5679 [2021-06-05 17:17:02,789 INFO L226 Difference]: Without dead ends: 5636 [2021-06-05 17:17:02,789 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2058 ImplicationChecksByTransitivity, 1687.2ms TimeCoverageRelationStatistics Valid=570, Invalid=6236, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 17:17:02,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5636 states. [2021-06-05 17:17:02,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5636 to 4472. [2021-06-05 17:17:02,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4471 states have (on average 3.372847237754417) internal successors, (15080), 4471 states have internal predecessors, (15080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:02,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 15080 transitions. [2021-06-05 17:17:02,849 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 15080 transitions. Word has length 39 [2021-06-05 17:17:02,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:02,849 INFO L482 AbstractCegarLoop]: Abstraction has 4472 states and 15080 transitions. [2021-06-05 17:17:02,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:02,849 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 15080 transitions. [2021-06-05 17:17:02,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:02,853 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:02,854 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:02,854 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-06-05 17:17:02,854 INFO L430 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:02,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:02,854 INFO L82 PathProgramCache]: Analyzing trace with hash 369111606, now seen corresponding path program 292 times [2021-06-05 17:17:02,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:02,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132324796] [2021-06-05 17:17:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:03,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:03,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132324796] [2021-06-05 17:17:03,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132324796] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:03,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:03,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:03,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618210153] [2021-06-05 17:17:03,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:03,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:03,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:03,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:03,033 INFO L87 Difference]: Start difference. First operand 4472 states and 15080 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:05,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:05,421 INFO L93 Difference]: Finished difference Result 5610 states and 18864 transitions. [2021-06-05 17:17:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 17:17:05,423 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:05,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:05,432 INFO L225 Difference]: With dead ends: 5610 [2021-06-05 17:17:05,432 INFO L226 Difference]: Without dead ends: 5546 [2021-06-05 17:17:05,432 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1869 ImplicationChecksByTransitivity, 1644.4ms TimeCoverageRelationStatistics Valid=544, Invalid=5776, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 17:17:05,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5546 states. [2021-06-05 17:17:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5546 to 4454. [2021-06-05 17:17:05,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 3.3768246126207053) internal successors, (15037), 4453 states have internal predecessors, (15037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 15037 transitions. [2021-06-05 17:17:05,495 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 15037 transitions. Word has length 39 [2021-06-05 17:17:05,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:05,495 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 15037 transitions. [2021-06-05 17:17:05,495 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:05,495 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 15037 transitions. [2021-06-05 17:17:05,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:05,500 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:05,500 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:05,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-06-05 17:17:05,500 INFO L430 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:05,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:05,500 INFO L82 PathProgramCache]: Analyzing trace with hash 989546006, now seen corresponding path program 293 times [2021-06-05 17:17:05,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:05,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947844232] [2021-06-05 17:17:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:05,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:05,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947844232] [2021-06-05 17:17:05,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947844232] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:05,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:05,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:05,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269657145] [2021-06-05 17:17:05,681 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:05,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:05,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:05,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:05,681 INFO L87 Difference]: Start difference. First operand 4454 states and 15037 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:07,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:07,280 INFO L93 Difference]: Finished difference Result 5450 states and 18401 transitions. [2021-06-05 17:17:07,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 17:17:07,280 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:07,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:07,289 INFO L225 Difference]: With dead ends: 5450 [2021-06-05 17:17:07,289 INFO L226 Difference]: Without dead ends: 5383 [2021-06-05 17:17:07,289 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 1053.3ms TimeCoverageRelationStatistics Valid=346, Invalid=3314, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 17:17:07,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5383 states. [2021-06-05 17:17:07,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5383 to 4458. [2021-06-05 17:17:07,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4457 states have (on average 3.376037693515818) internal successors, (15047), 4457 states have internal predecessors, (15047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 15047 transitions. [2021-06-05 17:17:07,347 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 15047 transitions. Word has length 39 [2021-06-05 17:17:07,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:07,347 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 15047 transitions. [2021-06-05 17:17:07,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:07,347 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 15047 transitions. [2021-06-05 17:17:07,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:07,352 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:07,352 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:07,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-06-05 17:17:07,352 INFO L430 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:07,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:07,352 INFO L82 PathProgramCache]: Analyzing trace with hash 858951158, now seen corresponding path program 294 times [2021-06-05 17:17:07,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:07,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264533731] [2021-06-05 17:17:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:07,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:07,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264533731] [2021-06-05 17:17:07,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264533731] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:07,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:07,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:07,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087383397] [2021-06-05 17:17:07,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:07,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:07,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:07,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:07,534 INFO L87 Difference]: Start difference. First operand 4458 states and 15047 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:09,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:09,108 INFO L93 Difference]: Finished difference Result 5459 states and 18385 transitions. [2021-06-05 17:17:09,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 17:17:09,108 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:09,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:09,116 INFO L225 Difference]: With dead ends: 5459 [2021-06-05 17:17:09,116 INFO L226 Difference]: Without dead ends: 5396 [2021-06-05 17:17:09,117 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 1044.3ms TimeCoverageRelationStatistics Valid=352, Invalid=3430, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 17:17:09,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5396 states. [2021-06-05 17:17:09,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5396 to 4458. [2021-06-05 17:17:09,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4457 states have (on average 3.375140228853489) internal successors, (15043), 4457 states have internal predecessors, (15043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 15043 transitions. [2021-06-05 17:17:09,176 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 15043 transitions. Word has length 39 [2021-06-05 17:17:09,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:09,177 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 15043 transitions. [2021-06-05 17:17:09,177 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) [2021-06-05 17:17:09,177 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 15043 transitions. [2021-06-05 17:17:09,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:09,181 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:09,181 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:09,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-06-05 17:17:09,181 INFO L430 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:09,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:09,182 INFO L82 PathProgramCache]: Analyzing trace with hash 723272566, now seen corresponding path program 295 times [2021-06-05 17:17:09,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:09,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226089145] [2021-06-05 17:17:09,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:09,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:09,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:09,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226089145] [2021-06-05 17:17:09,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226089145] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:09,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:09,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:09,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863584725] [2021-06-05 17:17:09,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:09,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:09,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:09,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:09,364 INFO L87 Difference]: Start difference. First operand 4458 states and 15043 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:11,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:11,506 INFO L93 Difference]: Finished difference Result 5626 states and 18810 transitions. [2021-06-05 17:17:11,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-05 17:17:11,507 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:11,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:11,515 INFO L225 Difference]: With dead ends: 5626 [2021-06-05 17:17:11,515 INFO L226 Difference]: Without dead ends: 5583 [2021-06-05 17:17:11,515 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1694 ImplicationChecksByTransitivity, 1514.2ms TimeCoverageRelationStatistics Valid=519, Invalid=5333, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 17:17:11,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5583 states. [2021-06-05 17:17:11,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5583 to 4466. [2021-06-05 17:17:11,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.373572228443449) internal successors, (15063), 4465 states have internal predecessors, (15063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:11,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15063 transitions. [2021-06-05 17:17:11,575 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15063 transitions. Word has length 39 [2021-06-05 17:17:11,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:11,575 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15063 transitions. [2021-06-05 17:17:11,575 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:11,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15063 transitions. [2021-06-05 17:17:11,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:11,579 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:11,579 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:11,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-06-05 17:17:11,579 INFO L430 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:11,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:11,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1057325736, now seen corresponding path program 296 times [2021-06-05 17:17:11,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:11,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128205643] [2021-06-05 17:17:11,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:11,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:11,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:11,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128205643] [2021-06-05 17:17:11,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128205643] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:11,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:11,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:11,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677990337] [2021-06-05 17:17:11,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:11,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:11,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:11,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:11,756 INFO L87 Difference]: Start difference. First operand 4466 states and 15063 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:13,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:13,885 INFO L93 Difference]: Finished difference Result 5614 states and 18772 transitions. [2021-06-05 17:17:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 17:17:13,886 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:13,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:13,894 INFO L225 Difference]: With dead ends: 5614 [2021-06-05 17:17:13,894 INFO L226 Difference]: Without dead ends: 5562 [2021-06-05 17:17:13,895 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1636 ImplicationChecksByTransitivity, 1487.6ms TimeCoverageRelationStatistics Valid=511, Invalid=5189, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 17:17:13,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2021-06-05 17:17:13,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 4458. [2021-06-05 17:17:13,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4457 states have (on average 3.375140228853489) internal successors, (15043), 4457 states have internal predecessors, (15043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:13,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 15043 transitions. [2021-06-05 17:17:13,956 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 15043 transitions. Word has length 39 [2021-06-05 17:17:13,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:13,956 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 15043 transitions. [2021-06-05 17:17:13,956 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:13,956 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 15043 transitions. [2021-06-05 17:17:13,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:13,961 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:13,961 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:13,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-06-05 17:17:13,961 INFO L430 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:13,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:13,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1641756136, now seen corresponding path program 297 times [2021-06-05 17:17:13,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:13,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427479696] [2021-06-05 17:17:13,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:14,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:14,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427479696] [2021-06-05 17:17:14,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427479696] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:14,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:14,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:14,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980221052] [2021-06-05 17:17:14,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:14,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:14,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:14,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:14,143 INFO L87 Difference]: Start difference. First operand 4458 states and 15043 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:15,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:15,862 INFO L93 Difference]: Finished difference Result 5597 states and 18690 transitions. [2021-06-05 17:17:15,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 17:17:15,862 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:15,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:15,870 INFO L225 Difference]: With dead ends: 5597 [2021-06-05 17:17:15,870 INFO L226 Difference]: Without dead ends: 5542 [2021-06-05 17:17:15,870 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1136 ImplicationChecksByTransitivity, 1171.8ms TimeCoverageRelationStatistics Valid=396, Invalid=3894, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 17:17:15,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5542 states. [2021-06-05 17:17:15,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5542 to 4460. [2021-06-05 17:17:15,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4460 states, 4459 states have (on average 3.3742991702175376) internal successors, (15046), 4459 states have internal predecessors, (15046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:15,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4460 states to 4460 states and 15046 transitions. [2021-06-05 17:17:15,930 INFO L78 Accepts]: Start accepts. Automaton has 4460 states and 15046 transitions. Word has length 39 [2021-06-05 17:17:15,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:15,930 INFO L482 AbstractCegarLoop]: Abstraction has 4460 states and 15046 transitions. [2021-06-05 17:17:15,930 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:15,930 INFO L276 IsEmpty]: Start isEmpty. Operand 4460 states and 15046 transitions. [2021-06-05 17:17:15,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:15,935 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:15,935 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:15,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-06-05 17:17:15,935 INFO L430 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:15,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:15,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1480558938, now seen corresponding path program 298 times [2021-06-05 17:17:15,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:15,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317881053] [2021-06-05 17:17:15,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:16,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:16,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317881053] [2021-06-05 17:17:16,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317881053] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:16,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:16,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:16,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120919446] [2021-06-05 17:17:16,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:16,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:16,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:16,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:16,121 INFO L87 Difference]: Start difference. First operand 4460 states and 15046 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:17,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:17,794 INFO L93 Difference]: Finished difference Result 5510 states and 18499 transitions. [2021-06-05 17:17:17,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 17:17:17,795 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:17,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:17,802 INFO L225 Difference]: With dead ends: 5510 [2021-06-05 17:17:17,802 INFO L226 Difference]: Without dead ends: 5446 [2021-06-05 17:17:17,803 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 1134.2ms TimeCoverageRelationStatistics Valid=379, Invalid=3653, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 17:17:17,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5446 states. [2021-06-05 17:17:17,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 4454. [2021-06-05 17:17:17,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 3.3759263417920504) internal successors, (15033), 4453 states have internal predecessors, (15033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:17,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 15033 transitions. [2021-06-05 17:17:17,860 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 15033 transitions. Word has length 39 [2021-06-05 17:17:17,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:17,860 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 15033 transitions. [2021-06-05 17:17:17,860 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:17,860 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 15033 transitions. [2021-06-05 17:17:17,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:17,865 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:17,865 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:17,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-06-05 17:17:17,865 INFO L430 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:17,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:17,865 INFO L82 PathProgramCache]: Analyzing trace with hash 761489384, now seen corresponding path program 299 times [2021-06-05 17:17:17,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:17,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342285350] [2021-06-05 17:17:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:18,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:18,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342285350] [2021-06-05 17:17:18,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342285350] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:18,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:18,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:18,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114514943] [2021-06-05 17:17:18,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:18,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:18,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:18,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:18,043 INFO L87 Difference]: Start difference. First operand 4454 states and 15033 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:20,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:20,308 INFO L93 Difference]: Finished difference Result 5699 states and 19074 transitions. [2021-06-05 17:17:20,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 17:17:20,308 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:20,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:20,317 INFO L225 Difference]: With dead ends: 5699 [2021-06-05 17:17:20,317 INFO L226 Difference]: Without dead ends: 5562 [2021-06-05 17:17:20,317 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 1490.3ms TimeCoverageRelationStatistics Valid=466, Invalid=5234, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 17:17:20,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2021-06-05 17:17:20,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 4462. [2021-06-05 17:17:20,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4461 states have (on average 3.3770455054920423) internal successors, (15065), 4461 states have internal predecessors, (15065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 15065 transitions. [2021-06-05 17:17:20,400 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 15065 transitions. Word has length 39 [2021-06-05 17:17:20,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:20,400 INFO L482 AbstractCegarLoop]: Abstraction has 4462 states and 15065 transitions. [2021-06-05 17:17:20,400 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:20,400 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 15065 transitions. [2021-06-05 17:17:20,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:20,405 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:20,405 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:20,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-06-05 17:17:20,405 INFO L430 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:20,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:20,406 INFO L82 PathProgramCache]: Analyzing trace with hash -733401516, now seen corresponding path program 300 times [2021-06-05 17:17:20,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:20,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312804973] [2021-06-05 17:17:20,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:20,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:20,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:20,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312804973] [2021-06-05 17:17:20,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312804973] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:20,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:20,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:20,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987545838] [2021-06-05 17:17:20,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:20,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:20,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:20,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:20,586 INFO L87 Difference]: Start difference. First operand 4462 states and 15065 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:22,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:22,687 INFO L93 Difference]: Finished difference Result 5658 states and 18890 transitions. [2021-06-05 17:17:22,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 17:17:22,688 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:22,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:22,696 INFO L225 Difference]: With dead ends: 5658 [2021-06-05 17:17:22,696 INFO L226 Difference]: Without dead ends: 5594 [2021-06-05 17:17:22,696 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1581 ImplicationChecksByTransitivity, 1458.0ms TimeCoverageRelationStatistics Valid=485, Invalid=5065, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 17:17:22,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2021-06-05 17:17:22,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 4466. [2021-06-05 17:17:22,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.3762597984322507) internal successors, (15075), 4465 states have internal predecessors, (15075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15075 transitions. [2021-06-05 17:17:22,763 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15075 transitions. Word has length 39 [2021-06-05 17:17:22,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:22,764 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15075 transitions. [2021-06-05 17:17:22,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:22,764 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15075 transitions. [2021-06-05 17:17:22,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:22,768 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:22,768 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:22,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-06-05 17:17:22,768 INFO L430 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:22,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:22,768 INFO L82 PathProgramCache]: Analyzing trace with hash 185082054, now seen corresponding path program 301 times [2021-06-05 17:17:22,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:22,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478425956] [2021-06-05 17:17:22,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:22,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:22,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:22,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478425956] [2021-06-05 17:17:22,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478425956] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:22,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:22,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:22,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072587338] [2021-06-05 17:17:22,960 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:22,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:22,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:22,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:22,961 INFO L87 Difference]: Start difference. First operand 4466 states and 15075 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:24,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:24,588 INFO L93 Difference]: Finished difference Result 5584 states and 18676 transitions. [2021-06-05 17:17:24,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 17:17:24,589 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:24,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:24,597 INFO L225 Difference]: With dead ends: 5584 [2021-06-05 17:17:24,597 INFO L226 Difference]: Without dead ends: 5529 [2021-06-05 17:17:24,598 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 1058.0ms TimeCoverageRelationStatistics Valid=351, Invalid=3555, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 17:17:24,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2021-06-05 17:17:24,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 4468. [2021-06-05 17:17:24,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4467 states have (on average 3.3754197447951646) internal successors, (15078), 4467 states have internal predecessors, (15078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 15078 transitions. [2021-06-05 17:17:24,658 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 15078 transitions. Word has length 39 [2021-06-05 17:17:24,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:24,658 INFO L482 AbstractCegarLoop]: Abstraction has 4468 states and 15078 transitions. [2021-06-05 17:17:24,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:24,658 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 15078 transitions. [2021-06-05 17:17:24,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:24,663 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:24,663 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:24,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-06-05 17:17:24,663 INFO L430 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:24,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:24,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1357734276, now seen corresponding path program 302 times [2021-06-05 17:17:24,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:24,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826453881] [2021-06-05 17:17:24,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:24,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:24,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:24,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826453881] [2021-06-05 17:17:24,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826453881] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:24,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:24,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:24,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653774675] [2021-06-05 17:17:24,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:24,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:24,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:24,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:24,846 INFO L87 Difference]: Start difference. First operand 4468 states and 15078 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:26,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:26,491 INFO L93 Difference]: Finished difference Result 5602 states and 18720 transitions. [2021-06-05 17:17:26,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 17:17:26,491 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:26,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:26,500 INFO L225 Difference]: With dead ends: 5602 [2021-06-05 17:17:26,500 INFO L226 Difference]: Without dead ends: 5542 [2021-06-05 17:17:26,500 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1044 ImplicationChecksByTransitivity, 1102.3ms TimeCoverageRelationStatistics Valid=362, Invalid=3670, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 17:17:26,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5542 states. [2021-06-05 17:17:26,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5542 to 4466. [2021-06-05 17:17:26,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.375811870100784) internal successors, (15073), 4465 states have internal predecessors, (15073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:26,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15073 transitions. [2021-06-05 17:17:26,560 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15073 transitions. Word has length 39 [2021-06-05 17:17:26,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:26,560 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15073 transitions. [2021-06-05 17:17:26,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:26,561 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15073 transitions. [2021-06-05 17:17:26,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:26,565 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:26,565 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:26,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-06-05 17:17:26,565 INFO L430 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:26,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:26,566 INFO L82 PathProgramCache]: Analyzing trace with hash -721832266, now seen corresponding path program 303 times [2021-06-05 17:17:26,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:26,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586842004] [2021-06-05 17:17:26,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:26,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:26,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:26,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586842004] [2021-06-05 17:17:26,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586842004] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:26,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:26,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:17:26,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055998912] [2021-06-05 17:17:26,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:17:26,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:26,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:17:26,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:17:26,731 INFO L87 Difference]: Start difference. First operand 4466 states and 15073 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:28,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:28,149 INFO L93 Difference]: Finished difference Result 5459 states and 18402 transitions. [2021-06-05 17:17:28,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 17:17:28,149 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 [2021-06-05 17:17:28,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:28,157 INFO L225 Difference]: With dead ends: 5459 [2021-06-05 17:17:28,157 INFO L226 Difference]: Without dead ends: 5383 [2021-06-05 17:17:28,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 932.2ms TimeCoverageRelationStatistics Valid=312, Invalid=2994, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 17:17:28,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5383 states. [2021-06-05 17:17:28,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5383 to 4474. [2021-06-05 17:17:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4473 states have (on average 3.3733512184216408) internal successors, (15089), 4473 states have internal predecessors, (15089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 15089 transitions. [2021-06-05 17:17:28,218 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 15089 transitions. Word has length 39 [2021-06-05 17:17:28,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:28,218 INFO L482 AbstractCegarLoop]: Abstraction has 4474 states and 15089 transitions. [2021-06-05 17:17:28,218 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:28,218 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 15089 transitions. [2021-06-05 17:17:28,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:28,223 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:28,223 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:28,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-06-05 17:17:28,223 INFO L430 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:28,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:28,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1739885878, now seen corresponding path program 304 times [2021-06-05 17:17:28,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:28,223 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144962668] [2021-06-05 17:17:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:28,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:28,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144962668] [2021-06-05 17:17:28,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144962668] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:28,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:28,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:28,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666654635] [2021-06-05 17:17:28,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:28,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:28,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:28,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:28,429 INFO L87 Difference]: Start difference. First operand 4474 states and 15089 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:29,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:29,958 INFO L93 Difference]: Finished difference Result 5489 states and 18453 transitions. [2021-06-05 17:17:29,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 17:17:29,958 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:29,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:29,966 INFO L225 Difference]: With dead ends: 5489 [2021-06-05 17:17:29,967 INFO L226 Difference]: Without dead ends: 5411 [2021-06-05 17:17:29,967 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 1034.1ms TimeCoverageRelationStatistics Valid=328, Invalid=3332, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 17:17:29,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2021-06-05 17:17:30,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 4454. [2021-06-05 17:17:30,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 3.3768246126207053) internal successors, (15037), 4453 states have internal predecessors, (15037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:30,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 15037 transitions. [2021-06-05 17:17:30,027 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 15037 transitions. Word has length 39 [2021-06-05 17:17:30,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:30,027 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 15037 transitions. [2021-06-05 17:17:30,027 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) [2021-06-05 17:17:30,027 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 15037 transitions. [2021-06-05 17:17:30,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:30,032 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:30,032 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:30,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-06-05 17:17:30,032 INFO L430 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:30,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:30,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1527944876, now seen corresponding path program 305 times [2021-06-05 17:17:30,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:30,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099203130] [2021-06-05 17:17:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:30,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:30,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:30,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099203130] [2021-06-05 17:17:30,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099203130] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:30,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:30,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:17:30,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989553968] [2021-06-05 17:17:30,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:17:30,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:30,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:17:30,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:17:30,197 INFO L87 Difference]: Start difference. First operand 4454 states and 15037 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:31,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:31,814 INFO L93 Difference]: Finished difference Result 5408 states and 18294 transitions. [2021-06-05 17:17:31,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 17:17:31,815 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:31,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:31,822 INFO L225 Difference]: With dead ends: 5408 [2021-06-05 17:17:31,822 INFO L226 Difference]: Without dead ends: 5341 [2021-06-05 17:17:31,823 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 994.6ms TimeCoverageRelationStatistics Valid=324, Invalid=3098, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 17:17:31,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2021-06-05 17:17:31,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 4502. [2021-06-05 17:17:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4502 states, 4501 states have (on average 3.3732503888024885) internal successors, (15183), 4501 states have internal predecessors, (15183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:31,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 15183 transitions. [2021-06-05 17:17:31,880 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 15183 transitions. Word has length 39 [2021-06-05 17:17:31,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:31,880 INFO L482 AbstractCegarLoop]: Abstraction has 4502 states and 15183 transitions. [2021-06-05 17:17:31,880 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:31,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 15183 transitions. [2021-06-05 17:17:31,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:31,885 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:31,885 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:31,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-06-05 17:17:31,885 INFO L430 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:31,885 INFO L82 PathProgramCache]: Analyzing trace with hash -191671094, now seen corresponding path program 306 times [2021-06-05 17:17:31,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:31,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248976516] [2021-06-05 17:17:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:32,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:32,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248976516] [2021-06-05 17:17:32,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248976516] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:32,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:32,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:17:32,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353181843] [2021-06-05 17:17:32,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:17:32,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:32,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:17:32,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:17:32,049 INFO L87 Difference]: Start difference. First operand 4502 states and 15183 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:34,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:34,238 INFO L93 Difference]: Finished difference Result 5504 states and 18555 transitions. [2021-06-05 17:17:34,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 17:17:34,238 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:34,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:34,246 INFO L225 Difference]: With dead ends: 5504 [2021-06-05 17:17:34,246 INFO L226 Difference]: Without dead ends: 5461 [2021-06-05 17:17:34,246 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1527 ImplicationChecksByTransitivity, 1464.1ms TimeCoverageRelationStatistics Valid=459, Invalid=4797, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 17:17:34,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5461 states. [2021-06-05 17:17:34,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5461 to 4508. [2021-06-05 17:17:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4508 states, 4507 states have (on average 3.3716441091635234) internal successors, (15196), 4507 states have internal predecessors, (15196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:34,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4508 states to 4508 states and 15196 transitions. [2021-06-05 17:17:34,304 INFO L78 Accepts]: Start accepts. Automaton has 4508 states and 15196 transitions. Word has length 39 [2021-06-05 17:17:34,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:34,304 INFO L482 AbstractCegarLoop]: Abstraction has 4508 states and 15196 transitions. [2021-06-05 17:17:34,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:34,304 INFO L276 IsEmpty]: Start isEmpty. Operand 4508 states and 15196 transitions. [2021-06-05 17:17:34,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:34,309 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:34,309 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:34,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-06-05 17:17:34,309 INFO L430 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:34,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:34,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1972269396, now seen corresponding path program 307 times [2021-06-05 17:17:34,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:34,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813071796] [2021-06-05 17:17:34,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:34,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:34,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813071796] [2021-06-05 17:17:34,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813071796] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:34,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:34,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:17:34,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805063609] [2021-06-05 17:17:34,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:17:34,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:34,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:17:34,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:17:34,473 INFO L87 Difference]: Start difference. First operand 4508 states and 15196 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:36,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:36,616 INFO L93 Difference]: Finished difference Result 5435 states and 18375 transitions. [2021-06-05 17:17:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 17:17:36,616 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 [2021-06-05 17:17:36,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:36,624 INFO L225 Difference]: With dead ends: 5435 [2021-06-05 17:17:36,624 INFO L226 Difference]: Without dead ends: 5371 [2021-06-05 17:17:36,624 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 1440.1ms TimeCoverageRelationStatistics Valid=452, Invalid=4660, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 17:17:36,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5371 states. [2021-06-05 17:17:36,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5371 to 4490. [2021-06-05 17:17:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4489 states have (on average 3.373802628647806) internal successors, (15145), 4489 states have internal predecessors, (15145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:36,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 15145 transitions. [2021-06-05 17:17:36,681 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 15145 transitions. Word has length 39 [2021-06-05 17:17:36,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:36,681 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 15145 transitions. [2021-06-05 17:17:36,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:36,681 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 15145 transitions. [2021-06-05 17:17:36,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:36,685 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:36,685 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:36,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-06-05 17:17:36,685 INFO L430 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:36,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:36,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1913882284, now seen corresponding path program 308 times [2021-06-05 17:17:36,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:36,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778029588] [2021-06-05 17:17:36,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:36,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:36,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778029588] [2021-06-05 17:17:36,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778029588] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:36,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:36,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:17:36,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898924362] [2021-06-05 17:17:36,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:17:36,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:36,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:17:36,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:17:36,849 INFO L87 Difference]: Start difference. First operand 4490 states and 15145 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:38,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:38,850 INFO L93 Difference]: Finished difference Result 5456 states and 18422 transitions. [2021-06-05 17:17:38,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 17:17:38,850 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 [2021-06-05 17:17:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:38,858 INFO L225 Difference]: With dead ends: 5456 [2021-06-05 17:17:38,858 INFO L226 Difference]: Without dead ends: 5326 [2021-06-05 17:17:38,859 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 1277.9ms TimeCoverageRelationStatistics Valid=387, Invalid=4035, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 17:17:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5326 states. [2021-06-05 17:17:38,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5326 to 4466. [2021-06-05 17:17:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.3749160134378497) internal successors, (15069), 4465 states have internal predecessors, (15069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:38,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15069 transitions. [2021-06-05 17:17:38,916 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15069 transitions. Word has length 39 [2021-06-05 17:17:38,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:38,916 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15069 transitions. [2021-06-05 17:17:38,916 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) [2021-06-05 17:17:38,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15069 transitions. [2021-06-05 17:17:38,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:38,921 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:38,921 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:38,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-06-05 17:17:38,921 INFO L430 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:38,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:38,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1252737994, now seen corresponding path program 309 times [2021-06-05 17:17:38,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:38,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762473958] [2021-06-05 17:17:38,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:39,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:39,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762473958] [2021-06-05 17:17:39,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762473958] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:39,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:39,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:39,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628614232] [2021-06-05 17:17:39,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:39,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:39,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:39,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:39,145 INFO L87 Difference]: Start difference. First operand 4466 states and 15069 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:40,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:40,936 INFO L93 Difference]: Finished difference Result 5501 states and 18545 transitions. [2021-06-05 17:17:40,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 17:17:40,936 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:40,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:40,944 INFO L225 Difference]: With dead ends: 5501 [2021-06-05 17:17:40,944 INFO L226 Difference]: Without dead ends: 5434 [2021-06-05 17:17:40,944 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 1148.2ms TimeCoverageRelationStatistics Valid=375, Invalid=3915, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 17:17:40,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5434 states. [2021-06-05 17:17:40,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5434 to 4484. [2021-06-05 17:17:40,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4484 states, 4483 states have (on average 3.3720722730314523) internal successors, (15117), 4483 states have internal predecessors, (15117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:41,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 15117 transitions. [2021-06-05 17:17:41,002 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 15117 transitions. Word has length 39 [2021-06-05 17:17:41,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:41,003 INFO L482 AbstractCegarLoop]: Abstraction has 4484 states and 15117 transitions. [2021-06-05 17:17:41,003 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) [2021-06-05 17:17:41,003 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 15117 transitions. [2021-06-05 17:17:41,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:41,007 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:41,007 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:41,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-06-05 17:17:41,007 INFO L430 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:41,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:41,007 INFO L82 PathProgramCache]: Analyzing trace with hash -466877976, now seen corresponding path program 310 times [2021-06-05 17:17:41,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:41,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672470557] [2021-06-05 17:17:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:41,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:41,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672470557] [2021-06-05 17:17:41,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672470557] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:41,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:41,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:41,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456643855] [2021-06-05 17:17:41,184 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:41,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:41,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:41,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:41,185 INFO L87 Difference]: Start difference. First operand 4484 states and 15117 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:43,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:43,544 INFO L93 Difference]: Finished difference Result 5630 states and 18872 transitions. [2021-06-05 17:17:43,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 17:17:43,544 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 [2021-06-05 17:17:43,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:43,552 INFO L225 Difference]: With dead ends: 5630 [2021-06-05 17:17:43,552 INFO L226 Difference]: Without dead ends: 5587 [2021-06-05 17:17:43,553 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1871 ImplicationChecksByTransitivity, 1572.1ms TimeCoverageRelationStatistics Valid=517, Invalid=5803, Unknown=0, NotChecked=0, Total=6320 [2021-06-05 17:17:43,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5587 states. [2021-06-05 17:17:43,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5587 to 4490. [2021-06-05 17:17:43,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4489 states have (on average 3.370461127199822) internal successors, (15130), 4489 states have internal predecessors, (15130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:43,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 15130 transitions. [2021-06-05 17:17:43,625 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 15130 transitions. Word has length 39 [2021-06-05 17:17:43,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:43,625 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 15130 transitions. [2021-06-05 17:17:43,625 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:43,625 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 15130 transitions. [2021-06-05 17:17:43,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:43,631 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:43,631 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:43,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-06-05 17:17:43,631 INFO L430 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:43,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:43,631 INFO L82 PathProgramCache]: Analyzing trace with hash 2047491018, now seen corresponding path program 311 times [2021-06-05 17:17:43,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:43,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277627187] [2021-06-05 17:17:43,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:43,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:43,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:43,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277627187] [2021-06-05 17:17:43,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277627187] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:43,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:43,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:43,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637458023] [2021-06-05 17:17:43,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:43,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:43,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:43,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:43,812 INFO L87 Difference]: Start difference. First operand 4490 states and 15130 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:46,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:46,098 INFO L93 Difference]: Finished difference Result 5561 states and 18692 transitions. [2021-06-05 17:17:46,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-06-05 17:17:46,099 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 [2021-06-05 17:17:46,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:46,107 INFO L225 Difference]: With dead ends: 5561 [2021-06-05 17:17:46,107 INFO L226 Difference]: Without dead ends: 5497 [2021-06-05 17:17:46,107 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 1541.2ms TimeCoverageRelationStatistics Valid=491, Invalid=5361, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 17:17:46,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5497 states. [2021-06-05 17:17:46,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5497 to 4472. [2021-06-05 17:17:46,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4471 states have (on average 3.373965555804071) internal successors, (15085), 4471 states have internal predecessors, (15085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:46,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 15085 transitions. [2021-06-05 17:17:46,168 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 15085 transitions. Word has length 39 [2021-06-05 17:17:46,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:46,168 INFO L482 AbstractCegarLoop]: Abstraction has 4472 states and 15085 transitions. [2021-06-05 17:17:46,169 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:46,169 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 15085 transitions. [2021-06-05 17:17:46,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:46,173 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:46,173 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:46,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-06-05 17:17:46,173 INFO L430 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:46,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:46,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1735685238, now seen corresponding path program 312 times [2021-06-05 17:17:46,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:46,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667033626] [2021-06-05 17:17:46,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:46,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:46,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667033626] [2021-06-05 17:17:46,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667033626] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:46,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:46,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:46,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474511208] [2021-06-05 17:17:46,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:46,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:46,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:46,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:46,352 INFO L87 Difference]: Start difference. First operand 4472 states and 15085 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:47,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:47,848 INFO L93 Difference]: Finished difference Result 5403 states and 18233 transitions. [2021-06-05 17:17:47,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 17:17:47,849 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:47,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:47,857 INFO L225 Difference]: With dead ends: 5403 [2021-06-05 17:17:47,857 INFO L226 Difference]: Without dead ends: 5336 [2021-06-05 17:17:47,857 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 928.2ms TimeCoverageRelationStatistics Valid=296, Invalid=3010, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 17:17:47,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5336 states. [2021-06-05 17:17:47,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5336 to 4490. [2021-06-05 17:17:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4489 states have (on average 3.369792826910225) internal successors, (15127), 4489 states have internal predecessors, (15127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:47,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 15127 transitions. [2021-06-05 17:17:47,917 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 15127 transitions. Word has length 39 [2021-06-05 17:17:47,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:47,917 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 15127 transitions. [2021-06-05 17:17:47,917 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:47,917 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 15127 transitions. [2021-06-05 17:17:47,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:47,921 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:47,921 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:47,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-06-05 17:17:47,921 INFO L430 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:47,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:47,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1377615030, now seen corresponding path program 313 times [2021-06-05 17:17:47,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:47,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000651573] [2021-06-05 17:17:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:48,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:48,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000651573] [2021-06-05 17:17:48,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000651573] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:48,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:48,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:48,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967600314] [2021-06-05 17:17:48,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:48,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:48,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:48,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:48,099 INFO L87 Difference]: Start difference. First operand 4490 states and 15127 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:49,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:49,587 INFO L93 Difference]: Finished difference Result 5420 states and 18237 transitions. [2021-06-05 17:17:49,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 17:17:49,588 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 [2021-06-05 17:17:49,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:49,596 INFO L225 Difference]: With dead ends: 5420 [2021-06-05 17:17:49,596 INFO L226 Difference]: Without dead ends: 5345 [2021-06-05 17:17:49,596 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 933.0ms TimeCoverageRelationStatistics Valid=302, Invalid=3120, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 17:17:49,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2021-06-05 17:17:49,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 4478. [2021-06-05 17:17:49,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 3.3716774625865535) internal successors, (15095), 4477 states have internal predecessors, (15095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:49,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 15095 transitions. [2021-06-05 17:17:49,682 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 15095 transitions. Word has length 39 [2021-06-05 17:17:49,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:49,682 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 15095 transitions. [2021-06-05 17:17:49,682 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:49,682 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 15095 transitions. [2021-06-05 17:17:49,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:49,687 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:49,687 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:49,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-06-05 17:17:49,687 INFO L430 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:49,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:49,687 INFO L82 PathProgramCache]: Analyzing trace with hash 250690024, now seen corresponding path program 314 times [2021-06-05 17:17:49,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:49,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478588807] [2021-06-05 17:17:49,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:49,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:49,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:49,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478588807] [2021-06-05 17:17:49,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478588807] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:49,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:49,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:49,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172467921] [2021-06-05 17:17:49,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:49,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:49,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:49,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:49,864 INFO L87 Difference]: Start difference. First operand 4478 states and 15095 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:51,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:51,861 INFO L93 Difference]: Finished difference Result 5579 states and 18644 transitions. [2021-06-05 17:17:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 17:17:51,861 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:51,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:51,870 INFO L225 Difference]: With dead ends: 5579 [2021-06-05 17:17:51,870 INFO L226 Difference]: Without dead ends: 5536 [2021-06-05 17:17:51,871 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1342.0ms TimeCoverageRelationStatistics Valid=440, Invalid=4816, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 17:17:51,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5536 states. [2021-06-05 17:17:51,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5536 to 4487. [2021-06-05 17:17:51,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 4486 states have (on average 3.370263040570664) internal successors, (15119), 4486 states have internal predecessors, (15119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 15119 transitions. [2021-06-05 17:17:51,931 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 15119 transitions. Word has length 39 [2021-06-05 17:17:51,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:51,931 INFO L482 AbstractCegarLoop]: Abstraction has 4487 states and 15119 transitions. [2021-06-05 17:17:51,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:51,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 15119 transitions. [2021-06-05 17:17:51,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:51,936 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:51,936 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:51,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-06-05 17:17:51,936 INFO L430 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:51,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:51,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1529908278, now seen corresponding path program 315 times [2021-06-05 17:17:51,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:51,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903857982] [2021-06-05 17:17:51,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:52,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:52,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903857982] [2021-06-05 17:17:52,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903857982] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:52,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:52,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:52,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942101272] [2021-06-05 17:17:52,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:52,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:52,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:52,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:52,114 INFO L87 Difference]: Start difference. First operand 4487 states and 15119 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:54,116 INFO L93 Difference]: Finished difference Result 5567 states and 18606 transitions. [2021-06-05 17:17:54,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 17:17:54,116 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:54,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:54,124 INFO L225 Difference]: With dead ends: 5567 [2021-06-05 17:17:54,125 INFO L226 Difference]: Without dead ends: 5515 [2021-06-05 17:17:54,125 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 1349.5ms TimeCoverageRelationStatistics Valid=432, Invalid=4680, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 17:17:54,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5515 states. [2021-06-05 17:17:54,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5515 to 4481. [2021-06-05 17:17:54,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4481 states, 4480 states have (on average 3.3712053571428573) internal successors, (15103), 4480 states have internal predecessors, (15103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4481 states to 4481 states and 15103 transitions. [2021-06-05 17:17:54,185 INFO L78 Accepts]: Start accepts. Automaton has 4481 states and 15103 transitions. Word has length 39 [2021-06-05 17:17:54,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:54,185 INFO L482 AbstractCegarLoop]: Abstraction has 4481 states and 15103 transitions. [2021-06-05 17:17:54,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:54,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4481 states and 15103 transitions. [2021-06-05 17:17:54,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:54,190 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:54,190 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:54,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-06-05 17:17:54,190 INFO L430 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:54,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:54,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1286729206, now seen corresponding path program 316 times [2021-06-05 17:17:54,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:54,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933547855] [2021-06-05 17:17:54,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:54,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:54,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:54,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933547855] [2021-06-05 17:17:54,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933547855] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:54,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:54,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:54,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968844741] [2021-06-05 17:17:54,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:54,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:54,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:54,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:54,367 INFO L87 Difference]: Start difference. First operand 4481 states and 15103 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:55,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:55,933 INFO L93 Difference]: Finished difference Result 5564 states and 18560 transitions. [2021-06-05 17:17:55,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 17:17:55,933 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:55,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:55,941 INFO L225 Difference]: With dead ends: 5564 [2021-06-05 17:17:55,941 INFO L226 Difference]: Without dead ends: 5501 [2021-06-05 17:17:55,942 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 982.3ms TimeCoverageRelationStatistics Valid=329, Invalid=3453, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 17:17:55,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5501 states. [2021-06-05 17:17:55,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5501 to 4481. [2021-06-05 17:17:55,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4481 states, 4480 states have (on average 3.3705357142857144) internal successors, (15100), 4480 states have internal predecessors, (15100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:56,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4481 states to 4481 states and 15100 transitions. [2021-06-05 17:17:56,001 INFO L78 Accepts]: Start accepts. Automaton has 4481 states and 15100 transitions. Word has length 39 [2021-06-05 17:17:56,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:56,001 INFO L482 AbstractCegarLoop]: Abstraction has 4481 states and 15100 transitions. [2021-06-05 17:17:56,001 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) [2021-06-05 17:17:56,001 INFO L276 IsEmpty]: Start isEmpty. Operand 4481 states and 15100 transitions. [2021-06-05 17:17:56,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:56,005 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:56,005 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:56,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-06-05 17:17:56,005 INFO L430 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:56,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:56,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1080596332, now seen corresponding path program 317 times [2021-06-05 17:17:56,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:56,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901035010] [2021-06-05 17:17:56,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:56,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:56,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901035010] [2021-06-05 17:17:56,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901035010] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:56,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:56,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:56,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207001321] [2021-06-05 17:17:56,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:56,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:56,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:56,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:56,183 INFO L87 Difference]: Start difference. First operand 4481 states and 15100 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:57,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:17:57,732 INFO L93 Difference]: Finished difference Result 5469 states and 18344 transitions. [2021-06-05 17:17:57,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 17:17:57,732 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:17:57,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:17:57,740 INFO L225 Difference]: With dead ends: 5469 [2021-06-05 17:17:57,740 INFO L226 Difference]: Without dead ends: 5393 [2021-06-05 17:17:57,740 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 951.5ms TimeCoverageRelationStatistics Valid=312, Invalid=3228, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 17:17:57,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2021-06-05 17:17:57,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 4472. [2021-06-05 17:17:57,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4471 states have (on average 3.3726235741444865) internal successors, (15079), 4471 states have internal predecessors, (15079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:17:57,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 15079 transitions. [2021-06-05 17:17:57,797 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 15079 transitions. Word has length 39 [2021-06-05 17:17:57,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:17:57,797 INFO L482 AbstractCegarLoop]: Abstraction has 4472 states and 15079 transitions. [2021-06-05 17:17:57,797 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) [2021-06-05 17:17:57,797 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 15079 transitions. [2021-06-05 17:17:57,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:17:57,801 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:17:57,801 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:17:57,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-06-05 17:17:57,801 INFO L430 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:17:57,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:17:57,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1498841964, now seen corresponding path program 318 times [2021-06-05 17:17:57,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:17:57,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048263136] [2021-06-05 17:17:57,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:17:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:17:57,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:17:57,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:17:57,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048263136] [2021-06-05 17:17:57,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048263136] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:17:57,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:17:57,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:17:57,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398795926] [2021-06-05 17:17:57,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:17:57,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:17:57,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:17:57,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:17:57,983 INFO L87 Difference]: Start difference. First operand 4472 states and 15079 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:00,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:00,216 INFO L93 Difference]: Finished difference Result 5646 states and 18882 transitions. [2021-06-05 17:18:00,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 17:18:00,216 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:00,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:00,224 INFO L225 Difference]: With dead ends: 5646 [2021-06-05 17:18:00,225 INFO L226 Difference]: Without dead ends: 5509 [2021-06-05 17:18:00,225 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1533 ImplicationChecksByTransitivity, 1444.0ms TimeCoverageRelationStatistics Valid=438, Invalid=4964, Unknown=0, NotChecked=0, Total=5402 [2021-06-05 17:18:00,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5509 states. [2021-06-05 17:18:00,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5509 to 4478. [2021-06-05 17:18:00,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 3.3716774625865535) internal successors, (15095), 4477 states have internal predecessors, (15095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:00,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 15095 transitions. [2021-06-05 17:18:00,316 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 15095 transitions. Word has length 39 [2021-06-05 17:18:00,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:00,316 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 15095 transitions. [2021-06-05 17:18:00,316 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:00,316 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 15095 transitions. [2021-06-05 17:18:00,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:00,320 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:00,320 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:00,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-06-05 17:18:00,320 INFO L430 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:00,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:00,321 INFO L82 PathProgramCache]: Analyzing trace with hash 757889866, now seen corresponding path program 319 times [2021-06-05 17:18:00,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:00,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214532590] [2021-06-05 17:18:00,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:00,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:00,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214532590] [2021-06-05 17:18:00,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214532590] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:00,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:00,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:00,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169096128] [2021-06-05 17:18:00,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:00,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:00,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:00,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:00,498 INFO L87 Difference]: Start difference. First operand 4478 states and 15095 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:02,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:02,471 INFO L93 Difference]: Finished difference Result 5618 states and 18745 transitions. [2021-06-05 17:18:02,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 17:18:02,472 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:02,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:02,480 INFO L225 Difference]: With dead ends: 5618 [2021-06-05 17:18:02,480 INFO L226 Difference]: Without dead ends: 5554 [2021-06-05 17:18:02,480 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 1324.0ms TimeCoverageRelationStatistics Valid=429, Invalid=4683, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 17:18:02,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5554 states. [2021-06-05 17:18:02,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5554 to 4487. [2021-06-05 17:18:02,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 4486 states have (on average 3.370263040570664) internal successors, (15119), 4486 states have internal predecessors, (15119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:02,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 15119 transitions. [2021-06-05 17:18:02,539 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 15119 transitions. Word has length 39 [2021-06-05 17:18:02,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:02,539 INFO L482 AbstractCegarLoop]: Abstraction has 4487 states and 15119 transitions. [2021-06-05 17:18:02,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:02,539 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 15119 transitions. [2021-06-05 17:18:02,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:02,544 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:02,544 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:02,544 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-06-05 17:18:02,544 INFO L430 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:02,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:02,544 INFO L82 PathProgramCache]: Analyzing trace with hash -779529364, now seen corresponding path program 320 times [2021-06-05 17:18:02,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:02,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595769805] [2021-06-05 17:18:02,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:02,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:02,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595769805] [2021-06-05 17:18:02,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595769805] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:02,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:02,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:02,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806707851] [2021-06-05 17:18:02,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:02,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:02,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:02,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:02,726 INFO L87 Difference]: Start difference. First operand 4487 states and 15119 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:04,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:04,247 INFO L93 Difference]: Finished difference Result 5558 states and 18563 transitions. [2021-06-05 17:18:04,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 17:18:04,247 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:04,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:04,255 INFO L225 Difference]: With dead ends: 5558 [2021-06-05 17:18:04,255 INFO L226 Difference]: Without dead ends: 5495 [2021-06-05 17:18:04,255 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 955.8ms TimeCoverageRelationStatistics Valid=307, Invalid=3233, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 17:18:04,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5495 states. [2021-06-05 17:18:04,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5495 to 4487. [2021-06-05 17:18:04,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 4486 states have (on average 3.369594293357111) internal successors, (15116), 4486 states have internal predecessors, (15116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:04,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 15116 transitions. [2021-06-05 17:18:04,315 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 15116 transitions. Word has length 39 [2021-06-05 17:18:04,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:04,315 INFO L482 AbstractCegarLoop]: Abstraction has 4487 states and 15116 transitions. [2021-06-05 17:18:04,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:04,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 15116 transitions. [2021-06-05 17:18:04,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:04,319 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:04,319 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:04,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-06-05 17:18:04,319 INFO L430 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:04,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:04,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1587796174, now seen corresponding path program 321 times [2021-06-05 17:18:04,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:04,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941346219] [2021-06-05 17:18:04,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:04,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:04,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941346219] [2021-06-05 17:18:04,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941346219] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:04,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:04,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:04,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723621028] [2021-06-05 17:18:04,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:04,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:04,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:04,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:04,500 INFO L87 Difference]: Start difference. First operand 4487 states and 15116 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:06,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:06,075 INFO L93 Difference]: Finished difference Result 5577 states and 18609 transitions. [2021-06-05 17:18:06,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 17:18:06,075 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:06,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:06,083 INFO L225 Difference]: With dead ends: 5577 [2021-06-05 17:18:06,083 INFO L226 Difference]: Without dead ends: 5507 [2021-06-05 17:18:06,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 1003.5ms TimeCoverageRelationStatistics Valid=318, Invalid=3342, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 17:18:06,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5507 states. [2021-06-05 17:18:06,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5507 to 4484. [2021-06-05 17:18:06,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4484 states, 4483 states have (on average 3.370064688824448) internal successors, (15108), 4483 states have internal predecessors, (15108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 15108 transitions. [2021-06-05 17:18:06,141 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 15108 transitions. Word has length 39 [2021-06-05 17:18:06,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:06,141 INFO L482 AbstractCegarLoop]: Abstraction has 4484 states and 15108 transitions. [2021-06-05 17:18:06,141 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 15108 transitions. [2021-06-05 17:18:06,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:06,146 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:06,146 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:06,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-06-05 17:18:06,146 INFO L430 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:06,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:06,146 INFO L82 PathProgramCache]: Analyzing trace with hash -427888026, now seen corresponding path program 322 times [2021-06-05 17:18:06,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:06,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801224204] [2021-06-05 17:18:06,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:06,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:06,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:06,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801224204] [2021-06-05 17:18:06,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801224204] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:06,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:06,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:18:06,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967302774] [2021-06-05 17:18:06,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:18:06,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:06,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:18:06,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:18:06,310 INFO L87 Difference]: Start difference. First operand 4484 states and 15108 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:07,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:07,688 INFO L93 Difference]: Finished difference Result 5415 states and 18234 transitions. [2021-06-05 17:18:07,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 17:18:07,689 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:07,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:07,697 INFO L225 Difference]: With dead ends: 5415 [2021-06-05 17:18:07,697 INFO L226 Difference]: Without dead ends: 5339 [2021-06-05 17:18:07,697 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 868.3ms TimeCoverageRelationStatistics Valid=285, Invalid=2795, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:18:07,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5339 states. [2021-06-05 17:18:07,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5339 to 4498. [2021-06-05 17:18:07,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4498 states, 4497 states have (on average 3.3662441627751836) internal successors, (15138), 4497 states have internal predecessors, (15138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:07,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 15138 transitions. [2021-06-05 17:18:07,756 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 15138 transitions. Word has length 39 [2021-06-05 17:18:07,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:07,756 INFO L482 AbstractCegarLoop]: Abstraction has 4498 states and 15138 transitions. [2021-06-05 17:18:07,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:07,756 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 15138 transitions. [2021-06-05 17:18:07,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:07,760 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:07,760 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:07,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-06-05 17:18:07,760 INFO L430 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:07,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:07,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1975810360, now seen corresponding path program 323 times [2021-06-05 17:18:07,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:07,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218578762] [2021-06-05 17:18:07,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:07,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:07,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:07,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218578762] [2021-06-05 17:18:07,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218578762] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:07,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:07,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:07,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940311475] [2021-06-05 17:18:07,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:07,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:07,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:07,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:07,954 INFO L87 Difference]: Start difference. First operand 4498 states and 15138 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:09,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:09,445 INFO L93 Difference]: Finished difference Result 5454 states and 18306 transitions. [2021-06-05 17:18:09,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 17:18:09,445 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:09,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:09,453 INFO L225 Difference]: With dead ends: 5454 [2021-06-05 17:18:09,453 INFO L226 Difference]: Without dead ends: 5355 [2021-06-05 17:18:09,454 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 939.9ms TimeCoverageRelationStatistics Valid=301, Invalid=3121, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 17:18:09,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5355 states. [2021-06-05 17:18:09,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5355 to 4466. [2021-06-05 17:18:09,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4465 states have (on average 3.374020156774916) internal successors, (15065), 4465 states have internal predecessors, (15065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:09,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 15065 transitions. [2021-06-05 17:18:09,511 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 15065 transitions. Word has length 39 [2021-06-05 17:18:09,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:09,511 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 15065 transitions. [2021-06-05 17:18:09,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:09,511 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 15065 transitions. [2021-06-05 17:18:09,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:09,516 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:09,516 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:09,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-06-05 17:18:09,516 INFO L430 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:09,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:09,516 INFO L82 PathProgramCache]: Analyzing trace with hash 2082179320, now seen corresponding path program 324 times [2021-06-05 17:18:09,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:09,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917888412] [2021-06-05 17:18:09,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:09,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:09,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917888412] [2021-06-05 17:18:09,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917888412] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:09,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:09,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:09,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784435462] [2021-06-05 17:18:09,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:09,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:09,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:09,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:09,696 INFO L87 Difference]: Start difference. First operand 4466 states and 15065 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:11,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:11,525 INFO L93 Difference]: Finished difference Result 5725 states and 19211 transitions. [2021-06-05 17:18:11,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 17:18:11,525 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 [2021-06-05 17:18:11,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:11,533 INFO L225 Difference]: With dead ends: 5725 [2021-06-05 17:18:11,533 INFO L226 Difference]: Without dead ends: 5658 [2021-06-05 17:18:11,533 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 1178.4ms TimeCoverageRelationStatistics Valid=426, Invalid=4130, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 17:18:11,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2021-06-05 17:18:11,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 4476. [2021-06-05 17:18:11,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4475 states have (on average 3.373631284916201) internal successors, (15097), 4475 states have internal predecessors, (15097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 15097 transitions. [2021-06-05 17:18:11,592 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 15097 transitions. Word has length 39 [2021-06-05 17:18:11,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:11,592 INFO L482 AbstractCegarLoop]: Abstraction has 4476 states and 15097 transitions. [2021-06-05 17:18:11,593 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) [2021-06-05 17:18:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 15097 transitions. [2021-06-05 17:18:11,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:11,597 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:11,597 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:11,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-06-05 17:18:11,597 INFO L430 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:11,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:11,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1951584472, now seen corresponding path program 325 times [2021-06-05 17:18:11,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:11,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301597962] [2021-06-05 17:18:11,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:11,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:11,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301597962] [2021-06-05 17:18:11,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301597962] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:11,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:11,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:11,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976683470] [2021-06-05 17:18:11,774 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:11,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:11,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:11,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:11,774 INFO L87 Difference]: Start difference. First operand 4476 states and 15097 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:13,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:13,482 INFO L93 Difference]: Finished difference Result 5628 states and 18951 transitions. [2021-06-05 17:18:13,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 17:18:13,482 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 [2021-06-05 17:18:13,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:13,492 INFO L225 Difference]: With dead ends: 5628 [2021-06-05 17:18:13,492 INFO L226 Difference]: Without dead ends: 5565 [2021-06-05 17:18:13,492 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 1141.1ms TimeCoverageRelationStatistics Valid=419, Invalid=4003, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 17:18:13,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2021-06-05 17:18:13,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 4476. [2021-06-05 17:18:13,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4475 states have (on average 3.372737430167598) internal successors, (15093), 4475 states have internal predecessors, (15093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 15093 transitions. [2021-06-05 17:18:13,581 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 15093 transitions. Word has length 39 [2021-06-05 17:18:13,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:13,581 INFO L482 AbstractCegarLoop]: Abstraction has 4476 states and 15093 transitions. [2021-06-05 17:18:13,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:13,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 15093 transitions. [2021-06-05 17:18:13,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:13,586 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:13,586 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:13,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-06-05 17:18:13,586 INFO L430 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:13,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:13,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1815905880, now seen corresponding path program 326 times [2021-06-05 17:18:13,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:13,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533509914] [2021-06-05 17:18:13,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:13,763 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:13,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533509914] [2021-06-05 17:18:13,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533509914] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:13,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:13,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:13,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445484426] [2021-06-05 17:18:13,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:13,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:13,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:13,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:13,764 INFO L87 Difference]: Start difference. First operand 4476 states and 15093 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:16,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:16,251 INFO L93 Difference]: Finished difference Result 5894 states and 19581 transitions. [2021-06-05 17:18:16,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-06-05 17:18:16,252 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:16,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:16,285 INFO L225 Difference]: With dead ends: 5894 [2021-06-05 17:18:16,285 INFO L226 Difference]: Without dead ends: 5812 [2021-06-05 17:18:16,285 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2323 ImplicationChecksByTransitivity, 1734.8ms TimeCoverageRelationStatistics Valid=628, Invalid=6854, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 17:18:16,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2021-06-05 17:18:16,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 4491. [2021-06-05 17:18:16,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4491 states, 4490 states have (on average 3.3701559020044543) internal successors, (15132), 4490 states have internal predecessors, (15132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:16,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 15132 transitions. [2021-06-05 17:18:16,347 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 15132 transitions. Word has length 39 [2021-06-05 17:18:16,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:16,347 INFO L482 AbstractCegarLoop]: Abstraction has 4491 states and 15132 transitions. [2021-06-05 17:18:16,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:16,347 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 15132 transitions. [2021-06-05 17:18:16,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:16,352 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:16,352 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:16,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-06-05 17:18:16,352 INFO L430 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:16,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:16,352 INFO L82 PathProgramCache]: Analyzing trace with hash 35307578, now seen corresponding path program 327 times [2021-06-05 17:18:16,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:16,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916481700] [2021-06-05 17:18:16,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:16,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:16,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916481700] [2021-06-05 17:18:16,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916481700] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:16,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:16,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:16,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064515212] [2021-06-05 17:18:16,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:16,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:16,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:16,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:16,533 INFO L87 Difference]: Start difference. First operand 4491 states and 15132 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:18,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:18,902 INFO L93 Difference]: Finished difference Result 5796 states and 19352 transitions. [2021-06-05 17:18:18,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-06-05 17:18:18,902 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:18,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:18,910 INFO L225 Difference]: With dead ends: 5796 [2021-06-05 17:18:18,910 INFO L226 Difference]: Without dead ends: 5744 [2021-06-05 17:18:18,911 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2123 ImplicationChecksByTransitivity, 1650.9ms TimeCoverageRelationStatistics Valid=596, Invalid=6376, Unknown=0, NotChecked=0, Total=6972 [2021-06-05 17:18:18,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2021-06-05 17:18:18,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 4483. [2021-06-05 17:18:18,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4483 states, 4482 states have (on average 3.3717090584560463) internal successors, (15112), 4482 states have internal predecessors, (15112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:18,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4483 states to 4483 states and 15112 transitions. [2021-06-05 17:18:18,994 INFO L78 Accepts]: Start accepts. Automaton has 4483 states and 15112 transitions. Word has length 39 [2021-06-05 17:18:18,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:18,994 INFO L482 AbstractCegarLoop]: Abstraction has 4483 states and 15112 transitions. [2021-06-05 17:18:18,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:18,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4483 states and 15112 transitions. [2021-06-05 17:18:18,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:18,999 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:18,999 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:18,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-06-05 17:18:18,999 INFO L430 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:18,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:18,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1560577846, now seen corresponding path program 328 times [2021-06-05 17:18:18,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:18,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496041704] [2021-06-05 17:18:18,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:19,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:19,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496041704] [2021-06-05 17:18:19,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496041704] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:19,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:19,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:19,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563694478] [2021-06-05 17:18:19,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:19,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:19,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:19,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:19,176 INFO L87 Difference]: Start difference. First operand 4483 states and 15112 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:20,973 INFO L93 Difference]: Finished difference Result 5765 states and 19249 transitions. [2021-06-05 17:18:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 17:18:20,973 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:20,982 INFO L225 Difference]: With dead ends: 5765 [2021-06-05 17:18:20,982 INFO L226 Difference]: Without dead ends: 5710 [2021-06-05 17:18:20,982 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1325 ImplicationChecksByTransitivity, 1216.4ms TimeCoverageRelationStatistics Valid=455, Invalid=4375, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 17:18:20,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5710 states. [2021-06-05 17:18:21,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5710 to 4485. [2021-06-05 17:18:21,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4485 states, 4484 states have (on average 3.3708742194469226) internal successors, (15115), 4484 states have internal predecessors, (15115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4485 states to 4485 states and 15115 transitions. [2021-06-05 17:18:21,043 INFO L78 Accepts]: Start accepts. Automaton has 4485 states and 15115 transitions. Word has length 39 [2021-06-05 17:18:21,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:21,043 INFO L482 AbstractCegarLoop]: Abstraction has 4485 states and 15115 transitions. [2021-06-05 17:18:21,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:21,043 INFO L276 IsEmpty]: Start isEmpty. Operand 4485 states and 15115 transitions. [2021-06-05 17:18:21,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:21,048 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:21,048 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:21,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-06-05 17:18:21,048 INFO L430 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:21,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:21,048 INFO L82 PathProgramCache]: Analyzing trace with hash -387925624, now seen corresponding path program 329 times [2021-06-05 17:18:21,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:21,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425900422] [2021-06-05 17:18:21,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:21,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:21,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:21,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425900422] [2021-06-05 17:18:21,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425900422] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:21,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:21,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:21,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521952437] [2021-06-05 17:18:21,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:21,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:21,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:21,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:21,224 INFO L87 Difference]: Start difference. First operand 4485 states and 15115 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:22,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:22,941 INFO L93 Difference]: Finished difference Result 5700 states and 19097 transitions. [2021-06-05 17:18:22,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 17:18:22,941 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:22,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:22,949 INFO L225 Difference]: With dead ends: 5700 [2021-06-05 17:18:22,950 INFO L226 Difference]: Without dead ends: 5654 [2021-06-05 17:18:22,950 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 1142.0ms TimeCoverageRelationStatistics Valid=425, Invalid=3997, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 17:18:22,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2021-06-05 17:18:23,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 4489. [2021-06-05 17:18:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4489 states, 4488 states have (on average 3.3696524064171123) internal successors, (15123), 4488 states have internal predecessors, (15123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:23,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 15123 transitions. [2021-06-05 17:18:23,011 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 15123 transitions. Word has length 39 [2021-06-05 17:18:23,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:23,011 INFO L482 AbstractCegarLoop]: Abstraction has 4489 states and 15123 transitions. [2021-06-05 17:18:23,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:23,011 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 15123 transitions. [2021-06-05 17:18:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:23,015 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:23,015 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:23,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-06-05 17:18:23,015 INFO L430 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:23,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:23,016 INFO L82 PathProgramCache]: Analyzing trace with hash -635391786, now seen corresponding path program 330 times [2021-06-05 17:18:23,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:23,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609173456] [2021-06-05 17:18:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:23,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:23,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609173456] [2021-06-05 17:18:23,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609173456] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:23,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:23,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:23,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384317] [2021-06-05 17:18:23,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:23,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:23,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:23,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:23,194 INFO L87 Difference]: Start difference. First operand 4489 states and 15123 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:25,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:25,012 INFO L93 Difference]: Finished difference Result 5672 states and 19046 transitions. [2021-06-05 17:18:25,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 17:18:25,012 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:25,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:25,020 INFO L225 Difference]: With dead ends: 5672 [2021-06-05 17:18:25,021 INFO L226 Difference]: Without dead ends: 5623 [2021-06-05 17:18:25,021 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1242.7ms TimeCoverageRelationStatistics Valid=437, Invalid=4119, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 17:18:25,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5623 states. [2021-06-05 17:18:25,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5623 to 4479. [2021-06-05 17:18:25,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4479 states, 4478 states have (on average 3.37293434569004) internal successors, (15104), 4478 states have internal predecessors, (15104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4479 states to 4479 states and 15104 transitions. [2021-06-05 17:18:25,080 INFO L78 Accepts]: Start accepts. Automaton has 4479 states and 15104 transitions. Word has length 39 [2021-06-05 17:18:25,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:25,080 INFO L482 AbstractCegarLoop]: Abstraction has 4479 states and 15104 transitions. [2021-06-05 17:18:25,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:25,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4479 states and 15104 transitions. [2021-06-05 17:18:25,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:25,084 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:25,084 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:25,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-06-05 17:18:25,085 INFO L430 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:25,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:25,085 INFO L82 PathProgramCache]: Analyzing trace with hash 823147510, now seen corresponding path program 331 times [2021-06-05 17:18:25,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:25,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51240044] [2021-06-05 17:18:25,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:25,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:25,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:25,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51240044] [2021-06-05 17:18:25,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51240044] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:25,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:25,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:25,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891261028] [2021-06-05 17:18:25,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:25,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:25,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:25,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:25,307 INFO L87 Difference]: Start difference. First operand 4479 states and 15104 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:27,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:27,132 INFO L93 Difference]: Finished difference Result 5771 states and 19335 transitions. [2021-06-05 17:18:27,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 17:18:27,132 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:27,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:27,140 INFO L225 Difference]: With dead ends: 5771 [2021-06-05 17:18:27,140 INFO L226 Difference]: Without dead ends: 5704 [2021-06-05 17:18:27,140 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 1191.5ms TimeCoverageRelationStatistics Valid=410, Invalid=4146, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 17:18:27,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2021-06-05 17:18:27,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 4497. [2021-06-05 17:18:27,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4497 states, 4496 states have (on average 3.3687722419928825) internal successors, (15146), 4496 states have internal predecessors, (15146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 15146 transitions. [2021-06-05 17:18:27,200 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 15146 transitions. Word has length 39 [2021-06-05 17:18:27,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:27,200 INFO L482 AbstractCegarLoop]: Abstraction has 4497 states and 15146 transitions. [2021-06-05 17:18:27,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 15146 transitions. [2021-06-05 17:18:27,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:27,205 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:27,205 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:27,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-06-05 17:18:27,205 INFO L430 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:27,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:27,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1181217718, now seen corresponding path program 332 times [2021-06-05 17:18:27,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:27,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914598001] [2021-06-05 17:18:27,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:27,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:27,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914598001] [2021-06-05 17:18:27,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914598001] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:27,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:27,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:27,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044422961] [2021-06-05 17:18:27,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:27,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:27,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:27,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:27,383 INFO L87 Difference]: Start difference. First operand 4497 states and 15146 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:29,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:29,101 INFO L93 Difference]: Finished difference Result 5733 states and 19210 transitions. [2021-06-05 17:18:29,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 17:18:29,101 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:29,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:29,110 INFO L225 Difference]: With dead ends: 5733 [2021-06-05 17:18:29,110 INFO L226 Difference]: Without dead ends: 5658 [2021-06-05 17:18:29,110 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 1109.6ms TimeCoverageRelationStatistics Valid=403, Invalid=4019, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 17:18:29,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2021-06-05 17:18:29,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 4497. [2021-06-05 17:18:29,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4497 states, 4496 states have (on average 3.367437722419929) internal successors, (15140), 4496 states have internal predecessors, (15140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:29,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 15140 transitions. [2021-06-05 17:18:29,172 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 15140 transitions. Word has length 39 [2021-06-05 17:18:29,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:29,172 INFO L482 AbstractCegarLoop]: Abstraction has 4497 states and 15140 transitions. [2021-06-05 17:18:29,173 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:29,173 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 15140 transitions. [2021-06-05 17:18:29,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:29,177 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:29,177 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:29,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-06-05 17:18:29,177 INFO L430 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:29,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:29,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1485444524, now seen corresponding path program 333 times [2021-06-05 17:18:29,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:29,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563949225] [2021-06-05 17:18:29,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:29,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:29,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563949225] [2021-06-05 17:18:29,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563949225] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:29,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:29,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:29,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771438500] [2021-06-05 17:18:29,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:29,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:29,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:29,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:29,357 INFO L87 Difference]: Start difference. First operand 4497 states and 15140 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:31,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:31,809 INFO L93 Difference]: Finished difference Result 5901 states and 19622 transitions. [2021-06-05 17:18:31,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-06-05 17:18:31,809 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:31,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:31,818 INFO L225 Difference]: With dead ends: 5901 [2021-06-05 17:18:31,818 INFO L226 Difference]: Without dead ends: 5809 [2021-06-05 17:18:31,818 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 1682.3ms TimeCoverageRelationStatistics Valid=605, Invalid=6877, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 17:18:31,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5809 states. [2021-06-05 17:18:31,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5809 to 4502. [2021-06-05 17:18:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4502 states, 4501 states have (on average 3.366807376138636) internal successors, (15154), 4501 states have internal predecessors, (15154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:31,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 15154 transitions. [2021-06-05 17:18:31,879 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 15154 transitions. Word has length 39 [2021-06-05 17:18:31,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:31,879 INFO L482 AbstractCegarLoop]: Abstraction has 4502 states and 15154 transitions. [2021-06-05 17:18:31,879 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:31,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 15154 transitions. [2021-06-05 17:18:31,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:31,884 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:31,884 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:31,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-06-05 17:18:31,884 INFO L430 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:31,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:31,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1028924470, now seen corresponding path program 334 times [2021-06-05 17:18:31,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:31,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802349378] [2021-06-05 17:18:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:32,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:32,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802349378] [2021-06-05 17:18:32,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802349378] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:32,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:32,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:32,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220650088] [2021-06-05 17:18:32,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:32,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:32,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:32,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:32,088 INFO L87 Difference]: Start difference. First operand 4502 states and 15154 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:34,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:34,439 INFO L93 Difference]: Finished difference Result 5840 states and 19473 transitions. [2021-06-05 17:18:34,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-06-05 17:18:34,439 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:34,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:34,448 INFO L225 Difference]: With dead ends: 5840 [2021-06-05 17:18:34,448 INFO L226 Difference]: Without dead ends: 5788 [2021-06-05 17:18:34,448 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2065 ImplicationChecksByTransitivity, 1619.9ms TimeCoverageRelationStatistics Valid=564, Invalid=6242, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 17:18:34,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2021-06-05 17:18:34,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 4496. [2021-06-05 17:18:34,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4496 states, 4495 states have (on average 3.367741935483871) internal successors, (15138), 4495 states have internal predecessors, (15138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:34,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4496 states to 4496 states and 15138 transitions. [2021-06-05 17:18:34,516 INFO L78 Accepts]: Start accepts. Automaton has 4496 states and 15138 transitions. Word has length 39 [2021-06-05 17:18:34,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:34,516 INFO L482 AbstractCegarLoop]: Abstraction has 4496 states and 15138 transitions. [2021-06-05 17:18:34,516 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) [2021-06-05 17:18:34,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4496 states and 15138 transitions. [2021-06-05 17:18:34,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:34,521 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:34,521 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:34,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-06-05 17:18:34,521 INFO L430 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:34,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:34,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1272103542, now seen corresponding path program 335 times [2021-06-05 17:18:34,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:34,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775383907] [2021-06-05 17:18:34,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:34,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:34,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:34,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775383907] [2021-06-05 17:18:34,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775383907] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:34,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:34,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:34,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212524107] [2021-06-05 17:18:34,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:34,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:34,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:34,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:34,701 INFO L87 Difference]: Start difference. First operand 4496 states and 15138 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:36,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:36,536 INFO L93 Difference]: Finished difference Result 5854 states and 19472 transitions. [2021-06-05 17:18:36,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 17:18:36,537 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:36,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:36,546 INFO L225 Difference]: With dead ends: 5854 [2021-06-05 17:18:36,546 INFO L226 Difference]: Without dead ends: 5791 [2021-06-05 17:18:36,547 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 1184.6ms TimeCoverageRelationStatistics Valid=431, Invalid=4399, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 17:18:36,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5791 states. [2021-06-05 17:18:36,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5791 to 4499. [2021-06-05 17:18:36,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4499 states, 4498 states have (on average 3.366607381058248) internal successors, (15143), 4498 states have internal predecessors, (15143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4499 states to 4499 states and 15143 transitions. [2021-06-05 17:18:36,614 INFO L78 Accepts]: Start accepts. Automaton has 4499 states and 15143 transitions. Word has length 39 [2021-06-05 17:18:36,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:36,614 INFO L482 AbstractCegarLoop]: Abstraction has 4499 states and 15143 transitions. [2021-06-05 17:18:36,614 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:36,614 INFO L276 IsEmpty]: Start isEmpty. Operand 4499 states and 15143 transitions. [2021-06-05 17:18:36,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:36,619 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:36,619 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:36,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-06-05 17:18:36,620 INFO L430 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:36,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:36,620 INFO L82 PathProgramCache]: Analyzing trace with hash -655538216, now seen corresponding path program 336 times [2021-06-05 17:18:36,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:36,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433277233] [2021-06-05 17:18:36,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:36,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:36,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433277233] [2021-06-05 17:18:36,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433277233] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:36,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:36,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:36,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369869477] [2021-06-05 17:18:36,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:36,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:36,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:36,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:36,800 INFO L87 Difference]: Start difference. First operand 4499 states and 15143 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:38,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:38,528 INFO L93 Difference]: Finished difference Result 5745 states and 19219 transitions. [2021-06-05 17:18:38,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 17:18:38,528 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:38,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:38,536 INFO L225 Difference]: With dead ends: 5745 [2021-06-05 17:18:38,536 INFO L226 Difference]: Without dead ends: 5699 [2021-06-05 17:18:38,537 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 1101.7ms TimeCoverageRelationStatistics Valid=401, Invalid=4021, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 17:18:38,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2021-06-05 17:18:38,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 4506. [2021-06-05 17:18:38,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4505 states have (on average 3.364705882352941) internal successors, (15158), 4505 states have internal predecessors, (15158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 15158 transitions. [2021-06-05 17:18:38,597 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 15158 transitions. Word has length 39 [2021-06-05 17:18:38,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:38,597 INFO L482 AbstractCegarLoop]: Abstraction has 4506 states and 15158 transitions. [2021-06-05 17:18:38,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 15158 transitions. [2021-06-05 17:18:38,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:38,602 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:38,602 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:38,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-06-05 17:18:38,602 INFO L430 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:38,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:38,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2090605706, now seen corresponding path program 337 times [2021-06-05 17:18:38,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:38,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254876871] [2021-06-05 17:18:38,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:38,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:38,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:38,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254876871] [2021-06-05 17:18:38,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254876871] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:38,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:38,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:38,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716045372] [2021-06-05 17:18:38,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:38,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:38,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:38,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:38,779 INFO L87 Difference]: Start difference. First operand 4506 states and 15158 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:40,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:40,594 INFO L93 Difference]: Finished difference Result 5675 states and 19008 transitions. [2021-06-05 17:18:40,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 17:18:40,595 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:40,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:40,603 INFO L225 Difference]: With dead ends: 5675 [2021-06-05 17:18:40,603 INFO L226 Difference]: Without dead ends: 5614 [2021-06-05 17:18:40,603 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 1155.1ms TimeCoverageRelationStatistics Valid=384, Invalid=3906, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 17:18:40,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5614 states. [2021-06-05 17:18:40,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5614 to 4490. [2021-06-05 17:18:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4489 states have (on average 3.369570060147026) internal successors, (15126), 4489 states have internal predecessors, (15126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:40,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 15126 transitions. [2021-06-05 17:18:40,663 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 15126 transitions. Word has length 39 [2021-06-05 17:18:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:40,663 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 15126 transitions. [2021-06-05 17:18:40,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:40,663 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 15126 transitions. [2021-06-05 17:18:40,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:40,668 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:40,668 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:40,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-06-05 17:18:40,668 INFO L430 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:40,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:40,668 INFO L82 PathProgramCache]: Analyzing trace with hash -82808552, now seen corresponding path program 338 times [2021-06-05 17:18:40,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:40,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651640019] [2021-06-05 17:18:40,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:40,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:40,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651640019] [2021-06-05 17:18:40,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651640019] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:40,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:40,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:40,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075794040] [2021-06-05 17:18:40,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:40,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:40,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:40,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:40,846 INFO L87 Difference]: Start difference. First operand 4490 states and 15126 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:42,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:42,570 INFO L93 Difference]: Finished difference Result 5704 states and 19279 transitions. [2021-06-05 17:18:42,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 17:18:42,570 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 [2021-06-05 17:18:42,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:42,579 INFO L225 Difference]: With dead ends: 5704 [2021-06-05 17:18:42,579 INFO L226 Difference]: Without dead ends: 5641 [2021-06-05 17:18:42,580 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 1047.2ms TimeCoverageRelationStatistics Valid=374, Invalid=3658, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 17:18:42,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5641 states. [2021-06-05 17:18:42,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5641 to 4490. [2021-06-05 17:18:42,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4489 states have (on average 3.3686789930942305) internal successors, (15122), 4489 states have internal predecessors, (15122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 15122 transitions. [2021-06-05 17:18:42,643 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 15122 transitions. Word has length 39 [2021-06-05 17:18:42,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:42,643 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 15122 transitions. [2021-06-05 17:18:42,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:42,643 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 15122 transitions. [2021-06-05 17:18:42,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:42,648 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:42,648 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:42,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-06-05 17:18:42,648 INFO L430 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:42,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:42,648 INFO L82 PathProgramCache]: Analyzing trace with hash -328300650, now seen corresponding path program 339 times [2021-06-05 17:18:42,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:42,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921809273] [2021-06-05 17:18:42,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:42,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:42,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921809273] [2021-06-05 17:18:42,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921809273] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:42,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:42,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:42,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774346797] [2021-06-05 17:18:42,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:42,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:42,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:42,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:42,854 INFO L87 Difference]: Start difference. First operand 4490 states and 15122 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:44,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:44,597 INFO L93 Difference]: Finished difference Result 5775 states and 19452 transitions. [2021-06-05 17:18:44,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 17:18:44,597 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:44,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:44,606 INFO L225 Difference]: With dead ends: 5775 [2021-06-05 17:18:44,606 INFO L226 Difference]: Without dead ends: 5700 [2021-06-05 17:18:44,607 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 1076.9ms TimeCoverageRelationStatistics Valid=374, Invalid=3658, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 17:18:44,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2021-06-05 17:18:44,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 4478. [2021-06-05 17:18:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 3.371007371007371) internal successors, (15092), 4477 states have internal predecessors, (15092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:44,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 15092 transitions. [2021-06-05 17:18:44,668 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 15092 transitions. Word has length 39 [2021-06-05 17:18:44,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:44,668 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 15092 transitions. [2021-06-05 17:18:44,668 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) [2021-06-05 17:18:44,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 15092 transitions. [2021-06-05 17:18:44,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:44,672 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:44,672 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:44,672 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-06-05 17:18:44,672 INFO L430 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:44,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:44,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1512005288, now seen corresponding path program 340 times [2021-06-05 17:18:44,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:44,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214402539] [2021-06-05 17:18:44,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:44,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:44,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:44,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214402539] [2021-06-05 17:18:44,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214402539] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:44,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:44,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:44,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749961773] [2021-06-05 17:18:44,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:44,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:44,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:44,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:44,849 INFO L87 Difference]: Start difference. First operand 4478 states and 15092 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:46,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:46,757 INFO L93 Difference]: Finished difference Result 6319 states and 21196 transitions. [2021-06-05 17:18:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 17:18:46,757 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:46,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:46,766 INFO L225 Difference]: With dead ends: 6319 [2021-06-05 17:18:46,766 INFO L226 Difference]: Without dead ends: 6264 [2021-06-05 17:18:46,766 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 1082.6ms TimeCoverageRelationStatistics Valid=396, Invalid=4026, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 17:18:46,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6264 states. [2021-06-05 17:18:46,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6264 to 4484. [2021-06-05 17:18:46,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4484 states, 4483 states have (on average 3.36939549408878) internal successors, (15105), 4483 states have internal predecessors, (15105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:46,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 15105 transitions. [2021-06-05 17:18:46,829 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 15105 transitions. Word has length 39 [2021-06-05 17:18:46,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:46,829 INFO L482 AbstractCegarLoop]: Abstraction has 4484 states and 15105 transitions. [2021-06-05 17:18:46,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:46,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 15105 transitions. [2021-06-05 17:18:46,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:46,834 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:46,834 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:46,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-06-05 17:18:46,834 INFO L430 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:46,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:46,834 INFO L82 PathProgramCache]: Analyzing trace with hash -174947274, now seen corresponding path program 341 times [2021-06-05 17:18:46,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:46,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010499376] [2021-06-05 17:18:46,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:47,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:47,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:47,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010499376] [2021-06-05 17:18:47,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010499376] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:47,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:47,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:47,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315267635] [2021-06-05 17:18:47,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:47,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:47,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:47,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:47,011 INFO L87 Difference]: Start difference. First operand 4484 states and 15105 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:48,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:48,942 INFO L93 Difference]: Finished difference Result 6307 states and 21158 transitions. [2021-06-05 17:18:48,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 17:18:48,943 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:48,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:48,952 INFO L225 Difference]: With dead ends: 6307 [2021-06-05 17:18:48,952 INFO L226 Difference]: Without dead ends: 6234 [2021-06-05 17:18:48,953 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 1100.4ms TimeCoverageRelationStatistics Valid=396, Invalid=4026, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 17:18:48,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2021-06-05 17:18:49,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 4474. [2021-06-05 17:18:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4473 states have (on average 3.3722334004024144) internal successors, (15084), 4473 states have internal predecessors, (15084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:49,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 15084 transitions. [2021-06-05 17:18:49,018 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 15084 transitions. Word has length 39 [2021-06-05 17:18:49,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:49,018 INFO L482 AbstractCegarLoop]: Abstraction has 4474 states and 15084 transitions. [2021-06-05 17:18:49,018 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) [2021-06-05 17:18:49,018 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 15084 transitions. [2021-06-05 17:18:49,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:49,023 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:49,023 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:49,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-06-05 17:18:49,023 INFO L430 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:49,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:49,023 INFO L82 PathProgramCache]: Analyzing trace with hash -544522038, now seen corresponding path program 342 times [2021-06-05 17:18:49,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:49,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780615166] [2021-06-05 17:18:49,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:49,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:49,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780615166] [2021-06-05 17:18:49,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780615166] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:49,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:49,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:49,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294443392] [2021-06-05 17:18:49,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:49,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:49,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:49,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:49,201 INFO L87 Difference]: Start difference. First operand 4474 states and 15084 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:52,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:52,393 INFO L93 Difference]: Finished difference Result 8942 states and 29698 transitions. [2021-06-05 17:18:52,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-06-05 17:18:52,399 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:52,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:52,412 INFO L225 Difference]: With dead ends: 8942 [2021-06-05 17:18:52,412 INFO L226 Difference]: Without dead ends: 8742 [2021-06-05 17:18:52,413 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3514 ImplicationChecksByTransitivity, 2013.0ms TimeCoverageRelationStatistics Valid=797, Invalid=9709, Unknown=0, NotChecked=0, Total=10506 [2021-06-05 17:18:52,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8742 states. [2021-06-05 17:18:52,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8742 to 5078. [2021-06-05 17:18:52,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5078 states, 5077 states have (on average 3.3890092574354935) internal successors, (17206), 5077 states have internal predecessors, (17206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:52,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 17206 transitions. [2021-06-05 17:18:52,494 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 17206 transitions. Word has length 39 [2021-06-05 17:18:52,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:52,494 INFO L482 AbstractCegarLoop]: Abstraction has 5078 states and 17206 transitions. [2021-06-05 17:18:52,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:52,494 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 17206 transitions. [2021-06-05 17:18:52,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:52,499 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:52,499 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:52,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-06-05 17:18:52,500 INFO L430 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:52,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:52,500 INFO L82 PathProgramCache]: Analyzing trace with hash 628130184, now seen corresponding path program 343 times [2021-06-05 17:18:52,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:52,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289712934] [2021-06-05 17:18:52,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:52,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:52,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:52,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289712934] [2021-06-05 17:18:52,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289712934] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:52,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:52,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:52,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617687395] [2021-06-05 17:18:52,677 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:52,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:52,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:52,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:52,677 INFO L87 Difference]: Start difference. First operand 5078 states and 17206 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:55,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:55,714 INFO L93 Difference]: Finished difference Result 9109 states and 30181 transitions. [2021-06-05 17:18:55,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-06-05 17:18:55,714 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:55,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:55,728 INFO L225 Difference]: With dead ends: 9109 [2021-06-05 17:18:55,728 INFO L226 Difference]: Without dead ends: 8872 [2021-06-05 17:18:55,729 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3112 ImplicationChecksByTransitivity, 1913.7ms TimeCoverageRelationStatistics Valid=751, Invalid=8755, Unknown=0, NotChecked=0, Total=9506 [2021-06-05 17:18:55,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8872 states. [2021-06-05 17:18:55,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8872 to 5058. [2021-06-05 17:18:55,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5058 states, 5057 states have (on average 3.3925252125766265) internal successors, (17156), 5057 states have internal predecessors, (17156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5058 states to 5058 states and 17156 transitions. [2021-06-05 17:18:55,813 INFO L78 Accepts]: Start accepts. Automaton has 5058 states and 17156 transitions. Word has length 39 [2021-06-05 17:18:55,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:55,813 INFO L482 AbstractCegarLoop]: Abstraction has 5058 states and 17156 transitions. [2021-06-05 17:18:55,813 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) [2021-06-05 17:18:55,813 INFO L276 IsEmpty]: Start isEmpty. Operand 5058 states and 17156 transitions. [2021-06-05 17:18:55,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:55,819 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:55,819 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:55,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-06-05 17:18:55,819 INFO L430 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:55,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:55,819 INFO L82 PathProgramCache]: Analyzing trace with hash 560385304, now seen corresponding path program 344 times [2021-06-05 17:18:55,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:55,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83693000] [2021-06-05 17:18:55,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:56,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:56,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83693000] [2021-06-05 17:18:56,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83693000] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:56,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:56,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:56,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667039371] [2021-06-05 17:18:56,000 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:56,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:56,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:56,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:56,000 INFO L87 Difference]: Start difference. First operand 5058 states and 17156 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:59,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:18:59,136 INFO L93 Difference]: Finished difference Result 8857 states and 29514 transitions. [2021-06-05 17:18:59,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-06-05 17:18:59,137 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:18:59,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:18:59,151 INFO L225 Difference]: With dead ends: 8857 [2021-06-05 17:18:59,151 INFO L226 Difference]: Without dead ends: 8725 [2021-06-05 17:18:59,152 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3353 ImplicationChecksByTransitivity, 1953.4ms TimeCoverageRelationStatistics Valid=761, Invalid=9339, Unknown=0, NotChecked=0, Total=10100 [2021-06-05 17:18:59,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8725 states. [2021-06-05 17:18:59,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8725 to 5099. [2021-06-05 17:18:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5099 states, 5098 states have (on average 3.3856414280109846) internal successors, (17260), 5098 states have internal predecessors, (17260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:18:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 17260 transitions. [2021-06-05 17:18:59,257 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 17260 transitions. Word has length 39 [2021-06-05 17:18:59,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:18:59,258 INFO L482 AbstractCegarLoop]: Abstraction has 5099 states and 17260 transitions. [2021-06-05 17:18:59,258 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) [2021-06-05 17:18:59,258 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 17260 transitions. [2021-06-05 17:18:59,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:18:59,263 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:18:59,263 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:18:59,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-06-05 17:18:59,264 INFO L430 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:18:59,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:18:59,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1367256454, now seen corresponding path program 345 times [2021-06-05 17:18:59,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:18:59,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557365862] [2021-06-05 17:18:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:18:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:18:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:18:59,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:18:59,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557365862] [2021-06-05 17:18:59,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557365862] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:18:59,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:18:59,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:18:59,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341327524] [2021-06-05 17:18:59,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:18:59,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:18:59,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:18:59,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:18:59,441 INFO L87 Difference]: Start difference. First operand 5099 states and 17260 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:02,395 INFO L93 Difference]: Finished difference Result 8987 states and 29894 transitions. [2021-06-05 17:19:02,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-06-05 17:19:02,395 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:02,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:02,408 INFO L225 Difference]: With dead ends: 8987 [2021-06-05 17:19:02,408 INFO L226 Difference]: Without dead ends: 8822 [2021-06-05 17:19:02,408 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2960 ImplicationChecksByTransitivity, 1823.2ms TimeCoverageRelationStatistics Valid=715, Invalid=8405, Unknown=0, NotChecked=0, Total=9120 [2021-06-05 17:19:02,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8822 states. [2021-06-05 17:19:02,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8822 to 5081. [2021-06-05 17:19:02,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5081 states, 5080 states have (on average 3.3897637795275593) internal successors, (17220), 5080 states have internal predecessors, (17220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:02,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5081 states to 5081 states and 17220 transitions. [2021-06-05 17:19:02,487 INFO L78 Accepts]: Start accepts. Automaton has 5081 states and 17220 transitions. Word has length 39 [2021-06-05 17:19:02,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:02,487 INFO L482 AbstractCegarLoop]: Abstraction has 5081 states and 17220 transitions. [2021-06-05 17:19:02,487 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) [2021-06-05 17:19:02,487 INFO L276 IsEmpty]: Start isEmpty. Operand 5081 states and 17220 transitions. [2021-06-05 17:19:02,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:02,492 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:02,492 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:02,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-06-05 17:19:02,492 INFO L430 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:02,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:02,492 INFO L82 PathProgramCache]: Analyzing trace with hash 699557460, now seen corresponding path program 346 times [2021-06-05 17:19:02,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:02,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676806548] [2021-06-05 17:19:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:02,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:02,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676806548] [2021-06-05 17:19:02,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676806548] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:02,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:02,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:02,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706877822] [2021-06-05 17:19:02,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:02,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:02,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:02,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:02,670 INFO L87 Difference]: Start difference. First operand 5081 states and 17220 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:05,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:05,157 INFO L93 Difference]: Finished difference Result 6596 states and 21948 transitions. [2021-06-05 17:19:05,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-06-05 17:19:05,157 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:05,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:05,167 INFO L225 Difference]: With dead ends: 6596 [2021-06-05 17:19:05,168 INFO L226 Difference]: Without dead ends: 6462 [2021-06-05 17:19:05,168 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2184 ImplicationChecksByTransitivity, 1696.3ms TimeCoverageRelationStatistics Valid=579, Invalid=6561, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 17:19:05,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6462 states. [2021-06-05 17:19:05,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6462 to 5094. [2021-06-05 17:19:05,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 5093 states have (on average 3.389554290202238) internal successors, (17263), 5093 states have internal predecessors, (17263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 17263 transitions. [2021-06-05 17:19:05,241 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 17263 transitions. Word has length 39 [2021-06-05 17:19:05,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:05,241 INFO L482 AbstractCegarLoop]: Abstraction has 5094 states and 17263 transitions. [2021-06-05 17:19:05,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:05,241 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 17263 transitions. [2021-06-05 17:19:05,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:05,247 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:05,247 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:05,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-06-05 17:19:05,247 INFO L430 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:05,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:05,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1618041030, now seen corresponding path program 347 times [2021-06-05 17:19:05,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:05,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835489459] [2021-06-05 17:19:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:05,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:05,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835489459] [2021-06-05 17:19:05,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835489459] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:05,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:05,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:05,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313997522] [2021-06-05 17:19:05,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:05,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:05,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:05,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:05,428 INFO L87 Difference]: Start difference. First operand 5094 states and 17263 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:07,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:07,160 INFO L93 Difference]: Finished difference Result 6368 states and 21399 transitions. [2021-06-05 17:19:07,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 17:19:07,161 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 [2021-06-05 17:19:07,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:07,170 INFO L225 Difference]: With dead ends: 6368 [2021-06-05 17:19:07,170 INFO L226 Difference]: Without dead ends: 6325 [2021-06-05 17:19:07,171 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1105.0ms TimeCoverageRelationStatistics Valid=370, Invalid=3790, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 17:19:07,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6325 states. [2021-06-05 17:19:07,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6325 to 5100. [2021-06-05 17:19:07,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5100 states, 5099 states have (on average 3.3881153167287703) internal successors, (17276), 5099 states have internal predecessors, (17276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:07,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5100 states to 5100 states and 17276 transitions. [2021-06-05 17:19:07,243 INFO L78 Accepts]: Start accepts. Automaton has 5100 states and 17276 transitions. Word has length 39 [2021-06-05 17:19:07,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:07,243 INFO L482 AbstractCegarLoop]: Abstraction has 5100 states and 17276 transitions. [2021-06-05 17:19:07,244 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:07,244 INFO L276 IsEmpty]: Start isEmpty. Operand 5100 states and 17276 transitions. [2021-06-05 17:19:07,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:07,250 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:07,250 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:07,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-06-05 17:19:07,250 INFO L430 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:07,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:07,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1638189764, now seen corresponding path program 348 times [2021-06-05 17:19:07,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:07,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322268993] [2021-06-05 17:19:07,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:07,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:07,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322268993] [2021-06-05 17:19:07,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322268993] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:07,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:07,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:07,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104451279] [2021-06-05 17:19:07,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:07,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:07,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:07,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:07,448 INFO L87 Difference]: Start difference. First operand 5100 states and 17276 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:09,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:09,230 INFO L93 Difference]: Finished difference Result 6328 states and 21316 transitions. [2021-06-05 17:19:09,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 17:19:09,230 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:09,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:09,240 INFO L225 Difference]: With dead ends: 6328 [2021-06-05 17:19:09,240 INFO L226 Difference]: Without dead ends: 6285 [2021-06-05 17:19:09,241 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 1143.4ms TimeCoverageRelationStatistics Valid=382, Invalid=3908, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 17:19:09,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6285 states. [2021-06-05 17:19:09,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6285 to 5096. [2021-06-05 17:19:09,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5096 states, 5095 states have (on average 3.3888125613346416) internal successors, (17266), 5095 states have internal predecessors, (17266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5096 states to 5096 states and 17266 transitions. [2021-06-05 17:19:09,314 INFO L78 Accepts]: Start accepts. Automaton has 5096 states and 17266 transitions. Word has length 39 [2021-06-05 17:19:09,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:09,314 INFO L482 AbstractCegarLoop]: Abstraction has 5096 states and 17266 transitions. [2021-06-05 17:19:09,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 5096 states and 17266 transitions. [2021-06-05 17:19:09,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:09,320 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:09,320 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:09,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-06-05 17:19:09,321 INFO L430 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:09,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:09,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1504274044, now seen corresponding path program 349 times [2021-06-05 17:19:09,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:09,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689223786] [2021-06-05 17:19:09,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:09,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:09,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689223786] [2021-06-05 17:19:09,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689223786] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:09,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:09,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:09,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002847474] [2021-06-05 17:19:09,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:09,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:09,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:09,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:09,501 INFO L87 Difference]: Start difference. First operand 5096 states and 17266 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:11,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:11,326 INFO L93 Difference]: Finished difference Result 6399 states and 21476 transitions. [2021-06-05 17:19:11,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 17:19:11,326 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 [2021-06-05 17:19:11,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:11,336 INFO L225 Difference]: With dead ends: 6399 [2021-06-05 17:19:11,336 INFO L226 Difference]: Without dead ends: 6339 [2021-06-05 17:19:11,336 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 1191.9ms TimeCoverageRelationStatistics Valid=401, Invalid=4155, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 17:19:11,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6339 states. [2021-06-05 17:19:11,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6339 to 5096. [2021-06-05 17:19:11,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5096 states, 5095 states have (on average 3.3888125613346416) internal successors, (17266), 5095 states have internal predecessors, (17266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5096 states to 5096 states and 17266 transitions. [2021-06-05 17:19:11,408 INFO L78 Accepts]: Start accepts. Automaton has 5096 states and 17266 transitions. Word has length 39 [2021-06-05 17:19:11,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:11,409 INFO L482 AbstractCegarLoop]: Abstraction has 5096 states and 17266 transitions. [2021-06-05 17:19:11,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:11,409 INFO L276 IsEmpty]: Start isEmpty. Operand 5096 states and 17266 transitions. [2021-06-05 17:19:11,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:11,414 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:11,414 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:11,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-06-05 17:19:11,414 INFO L430 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:11,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:11,414 INFO L82 PathProgramCache]: Analyzing trace with hash 711126710, now seen corresponding path program 350 times [2021-06-05 17:19:11,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:11,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821987596] [2021-06-05 17:19:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:11,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:11,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821987596] [2021-06-05 17:19:11,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821987596] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:11,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:11,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:19:11,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320855700] [2021-06-05 17:19:11,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:19:11,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:11,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:19:11,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:19:11,577 INFO L87 Difference]: Start difference. First operand 5096 states and 17266 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:13,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:13,188 INFO L93 Difference]: Finished difference Result 6370 states and 21417 transitions. [2021-06-05 17:19:13,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 17:19:13,188 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:13,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:13,197 INFO L225 Difference]: With dead ends: 6370 [2021-06-05 17:19:13,197 INFO L226 Difference]: Without dead ends: 6294 [2021-06-05 17:19:13,198 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 1016.8ms TimeCoverageRelationStatistics Valid=358, Invalid=3548, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 17:19:13,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6294 states. [2021-06-05 17:19:13,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6294 to 5104. [2021-06-05 17:19:13,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5104 states, 5103 states have (on average 3.3866353125612383) internal successors, (17282), 5103 states have internal predecessors, (17282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:13,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 17282 transitions. [2021-06-05 17:19:13,265 INFO L78 Accepts]: Start accepts. Automaton has 5104 states and 17282 transitions. Word has length 39 [2021-06-05 17:19:13,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:13,265 INFO L482 AbstractCegarLoop]: Abstraction has 5104 states and 17282 transitions. [2021-06-05 17:19:13,265 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) [2021-06-05 17:19:13,265 INFO L276 IsEmpty]: Start isEmpty. Operand 5104 states and 17282 transitions. [2021-06-05 17:19:13,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:13,270 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:13,270 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:13,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-06-05 17:19:13,271 INFO L430 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:13,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:13,271 INFO L82 PathProgramCache]: Analyzing trace with hash -306926902, now seen corresponding path program 351 times [2021-06-05 17:19:13,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:13,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521932371] [2021-06-05 17:19:13,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:13,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:13,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521932371] [2021-06-05 17:19:13,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521932371] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:13,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:13,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:13,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176365160] [2021-06-05 17:19:13,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:13,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:13,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:13,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:13,447 INFO L87 Difference]: Start difference. First operand 5104 states and 17282 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:15,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:15,224 INFO L93 Difference]: Finished difference Result 6352 states and 21363 transitions. [2021-06-05 17:19:15,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 17:19:15,224 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 [2021-06-05 17:19:15,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:15,234 INFO L225 Difference]: With dead ends: 6352 [2021-06-05 17:19:15,234 INFO L226 Difference]: Without dead ends: 6282 [2021-06-05 17:19:15,234 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1156.8ms TimeCoverageRelationStatistics Valid=383, Invalid=4039, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 17:19:15,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-06-05 17:19:15,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 5092. [2021-06-05 17:19:15,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5092 states, 5091 states have (on average 3.3887252013356903) internal successors, (17252), 5091 states have internal predecessors, (17252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 17252 transitions. [2021-06-05 17:19:15,305 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 17252 transitions. Word has length 39 [2021-06-05 17:19:15,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:15,305 INFO L482 AbstractCegarLoop]: Abstraction has 5092 states and 17252 transitions. [2021-06-05 17:19:15,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 17252 transitions. [2021-06-05 17:19:15,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:15,311 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:15,311 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:15,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-06-05 17:19:15,311 INFO L430 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:15,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:15,312 INFO L82 PathProgramCache]: Analyzing trace with hash 169460968, now seen corresponding path program 352 times [2021-06-05 17:19:15,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:15,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215200139] [2021-06-05 17:19:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:15,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:15,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215200139] [2021-06-05 17:19:15,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215200139] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:15,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:15,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:15,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489133209] [2021-06-05 17:19:15,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:15,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:15,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:15,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:15,491 INFO L87 Difference]: Start difference. First operand 5092 states and 17252 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:18,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:18,002 INFO L93 Difference]: Finished difference Result 6595 states and 21976 transitions. [2021-06-05 17:19:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-06-05 17:19:18,002 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 [2021-06-05 17:19:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:18,011 INFO L225 Difference]: With dead ends: 6595 [2021-06-05 17:19:18,011 INFO L226 Difference]: Without dead ends: 6451 [2021-06-05 17:19:18,012 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2186 ImplicationChecksByTransitivity, 1700.8ms TimeCoverageRelationStatistics Valid=569, Invalid=6571, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 17:19:18,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2021-06-05 17:19:18,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 5101. [2021-06-05 17:19:18,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 5100 states have (on average 3.3866666666666667) internal successors, (17272), 5100 states have internal predecessors, (17272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:18,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 17272 transitions. [2021-06-05 17:19:18,080 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 17272 transitions. Word has length 39 [2021-06-05 17:19:18,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:18,080 INFO L482 AbstractCegarLoop]: Abstraction has 5101 states and 17272 transitions. [2021-06-05 17:19:18,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:18,080 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 17272 transitions. [2021-06-05 17:19:18,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:18,085 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:18,085 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:18,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-06-05 17:19:18,086 INFO L430 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:18,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:18,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1367958262, now seen corresponding path program 353 times [2021-06-05 17:19:18,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:18,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099111253] [2021-06-05 17:19:18,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:18,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:18,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099111253] [2021-06-05 17:19:18,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099111253] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:18,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:18,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:18,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997740622] [2021-06-05 17:19:18,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:18,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:18,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:18,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:18,266 INFO L87 Difference]: Start difference. First operand 5101 states and 17272 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:19,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:19,953 INFO L93 Difference]: Finished difference Result 6409 states and 21515 transitions. [2021-06-05 17:19:19,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 17:19:19,953 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:19,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:19,962 INFO L225 Difference]: With dead ends: 6409 [2021-06-05 17:19:19,962 INFO L226 Difference]: Without dead ends: 6366 [2021-06-05 17:19:19,963 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 1039.9ms TimeCoverageRelationStatistics Valid=359, Invalid=3801, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 17:19:19,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6366 states. [2021-06-05 17:19:20,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6366 to 5110. [2021-06-05 17:19:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5110 states, 5109 states have (on average 3.3848111176355453) internal successors, (17293), 5109 states have internal predecessors, (17293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:20,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5110 states to 5110 states and 17293 transitions. [2021-06-05 17:19:20,032 INFO L78 Accepts]: Start accepts. Automaton has 5110 states and 17293 transitions. Word has length 39 [2021-06-05 17:19:20,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:20,032 INFO L482 AbstractCegarLoop]: Abstraction has 5110 states and 17293 transitions. [2021-06-05 17:19:20,032 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:20,032 INFO L276 IsEmpty]: Start isEmpty. Operand 5110 states and 17293 transitions. [2021-06-05 17:19:20,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:20,037 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:20,037 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:20,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-06-05 17:19:20,038 INFO L430 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:20,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:20,038 INFO L82 PathProgramCache]: Analyzing trace with hash 382148874, now seen corresponding path program 354 times [2021-06-05 17:19:20,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:20,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498263264] [2021-06-05 17:19:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:20,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:20,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498263264] [2021-06-05 17:19:20,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498263264] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:20,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:20,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:20,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360904556] [2021-06-05 17:19:20,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:20,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:20,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:20,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:20,247 INFO L87 Difference]: Start difference. First operand 5110 states and 17293 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:21,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:21,996 INFO L93 Difference]: Finished difference Result 6317 states and 21249 transitions. [2021-06-05 17:19:21,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 17:19:21,996 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:21,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:22,006 INFO L225 Difference]: With dead ends: 6317 [2021-06-05 17:19:22,006 INFO L226 Difference]: Without dead ends: 6266 [2021-06-05 17:19:22,006 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 1107.1ms TimeCoverageRelationStatistics Valid=355, Invalid=3805, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 17:19:22,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2021-06-05 17:19:22,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 5104. [2021-06-05 17:19:22,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5104 states, 5103 states have (on average 3.3856554967666077) internal successors, (17277), 5103 states have internal predecessors, (17277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:22,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 17277 transitions. [2021-06-05 17:19:22,075 INFO L78 Accepts]: Start accepts. Automaton has 5104 states and 17277 transitions. Word has length 39 [2021-06-05 17:19:22,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:22,075 INFO L482 AbstractCegarLoop]: Abstraction has 5104 states and 17277 transitions. [2021-06-05 17:19:22,075 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) [2021-06-05 17:19:22,075 INFO L276 IsEmpty]: Start isEmpty. Operand 5104 states and 17277 transitions. [2021-06-05 17:19:22,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:22,081 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:22,081 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:22,081 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-06-05 17:19:22,081 INFO L430 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:22,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:22,081 INFO L82 PathProgramCache]: Analyzing trace with hash 999367276, now seen corresponding path program 355 times [2021-06-05 17:19:22,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:22,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425714852] [2021-06-05 17:19:22,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:22,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:22,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425714852] [2021-06-05 17:19:22,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425714852] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:22,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:22,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:22,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127090373] [2021-06-05 17:19:22,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:22,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:22,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:22,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:22,259 INFO L87 Difference]: Start difference. First operand 5104 states and 17277 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:24,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:24,078 INFO L93 Difference]: Finished difference Result 6475 states and 21664 transitions. [2021-06-05 17:19:24,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 17:19:24,078 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:24,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:24,088 INFO L225 Difference]: With dead ends: 6475 [2021-06-05 17:19:24,088 INFO L226 Difference]: Without dead ends: 6403 [2021-06-05 17:19:24,088 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 1141.6ms TimeCoverageRelationStatistics Valid=391, Invalid=4165, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 17:19:24,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6403 states. [2021-06-05 17:19:24,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6403 to 5099. [2021-06-05 17:19:24,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5099 states, 5098 states have (on average 3.3864260494311496) internal successors, (17264), 5098 states have internal predecessors, (17264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:24,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 17264 transitions. [2021-06-05 17:19:24,158 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 17264 transitions. Word has length 39 [2021-06-05 17:19:24,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:24,158 INFO L482 AbstractCegarLoop]: Abstraction has 5099 states and 17264 transitions. [2021-06-05 17:19:24,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:24,158 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 17264 transitions. [2021-06-05 17:19:24,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:24,163 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:24,163 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:24,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-06-05 17:19:24,163 INFO L430 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:24,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:24,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1016316924, now seen corresponding path program 356 times [2021-06-05 17:19:24,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:24,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508953474] [2021-06-05 17:19:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:24,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:24,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:24,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508953474] [2021-06-05 17:19:24,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508953474] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:24,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:24,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:19:24,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679634299] [2021-06-05 17:19:24,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:19:24,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:24,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:19:24,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:19:24,332 INFO L87 Difference]: Start difference. First operand 5099 states and 17264 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:25,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:25,931 INFO L93 Difference]: Finished difference Result 6356 states and 21401 transitions. [2021-06-05 17:19:25,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 17:19:25,931 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:25,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:25,941 INFO L225 Difference]: With dead ends: 6356 [2021-06-05 17:19:25,941 INFO L226 Difference]: Without dead ends: 6280 [2021-06-05 17:19:25,941 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 1014.8ms TimeCoverageRelationStatistics Valid=348, Invalid=3434, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 17:19:25,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states. [2021-06-05 17:19:25,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6280 to 5113. [2021-06-05 17:19:26,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 3.38302034428795) internal successors, (17294), 5112 states have internal predecessors, (17294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:26,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 17294 transitions. [2021-06-05 17:19:26,010 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 17294 transitions. Word has length 39 [2021-06-05 17:19:26,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:26,010 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 17294 transitions. [2021-06-05 17:19:26,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:26,010 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 17294 transitions. [2021-06-05 17:19:26,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:26,015 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:26,015 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:26,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-06-05 17:19:26,016 INFO L430 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:26,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:26,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1730728038, now seen corresponding path program 357 times [2021-06-05 17:19:26,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:26,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220526401] [2021-06-05 17:19:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:26,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:26,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220526401] [2021-06-05 17:19:26,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220526401] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:26,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:26,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:26,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607725192] [2021-06-05 17:19:26,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:26,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:26,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:26,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:26,195 INFO L87 Difference]: Start difference. First operand 5113 states and 17294 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:27,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:27,896 INFO L93 Difference]: Finished difference Result 6395 states and 21473 transitions. [2021-06-05 17:19:27,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 17:19:27,896 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 [2021-06-05 17:19:27,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:27,906 INFO L225 Difference]: With dead ends: 6395 [2021-06-05 17:19:27,906 INFO L226 Difference]: Without dead ends: 6304 [2021-06-05 17:19:27,906 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 1070.1ms TimeCoverageRelationStatistics Valid=366, Invalid=3794, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 17:19:27,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6304 states. [2021-06-05 17:19:27,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6304 to 5089. [2021-06-05 17:19:27,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 3.388168238993711) internal successors, (17239), 5088 states have internal predecessors, (17239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:28,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 17239 transitions. [2021-06-05 17:19:28,005 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 17239 transitions. Word has length 39 [2021-06-05 17:19:28,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:28,005 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 17239 transitions. [2021-06-05 17:19:28,005 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) [2021-06-05 17:19:28,005 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 17239 transitions. [2021-06-05 17:19:28,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:28,011 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:28,011 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:28,011 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-06-05 17:19:28,011 INFO L430 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:28,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:28,011 INFO L82 PathProgramCache]: Analyzing trace with hash -248976344, now seen corresponding path program 358 times [2021-06-05 17:19:28,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:28,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912153880] [2021-06-05 17:19:28,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:28,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:28,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912153880] [2021-06-05 17:19:28,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912153880] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:28,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:28,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:28,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159793120] [2021-06-05 17:19:28,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:28,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:28,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:28,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:28,252 INFO L87 Difference]: Start difference. First operand 5089 states and 17239 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:31,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:31,303 INFO L93 Difference]: Finished difference Result 9645 states and 31815 transitions. [2021-06-05 17:19:31,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-06-05 17:19:31,304 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:31,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:31,317 INFO L225 Difference]: With dead ends: 9645 [2021-06-05 17:19:31,317 INFO L226 Difference]: Without dead ends: 9361 [2021-06-05 17:19:31,317 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2875 ImplicationChecksByTransitivity, 1828.2ms TimeCoverageRelationStatistics Valid=687, Invalid=8243, Unknown=0, NotChecked=0, Total=8930 [2021-06-05 17:19:31,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9361 states. [2021-06-05 17:19:31,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9361 to 5296. [2021-06-05 17:19:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 5295 states have (on average 3.3909348441926346) internal successors, (17955), 5295 states have internal predecessors, (17955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:31,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 17955 transitions. [2021-06-05 17:19:31,399 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 17955 transitions. Word has length 39 [2021-06-05 17:19:31,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:31,399 INFO L482 AbstractCegarLoop]: Abstraction has 5296 states and 17955 transitions. [2021-06-05 17:19:31,400 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:31,400 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 17955 transitions. [2021-06-05 17:19:31,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:31,405 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:31,405 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:31,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-06-05 17:19:31,405 INFO L430 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:31,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:31,405 INFO L82 PathProgramCache]: Analyzing trace with hash 923675878, now seen corresponding path program 359 times [2021-06-05 17:19:31,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:31,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763433337] [2021-06-05 17:19:31,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:31,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:31,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763433337] [2021-06-05 17:19:31,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763433337] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:31,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:31,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:31,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555155702] [2021-06-05 17:19:31,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:31,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:31,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:31,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:31,586 INFO L87 Difference]: Start difference. First operand 5296 states and 17955 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:34,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:34,571 INFO L93 Difference]: Finished difference Result 9771 states and 32231 transitions. [2021-06-05 17:19:34,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-06-05 17:19:34,571 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:34,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:34,585 INFO L225 Difference]: With dead ends: 9771 [2021-06-05 17:19:34,585 INFO L226 Difference]: Without dead ends: 9609 [2021-06-05 17:19:34,586 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2733 ImplicationChecksByTransitivity, 1785.0ms TimeCoverageRelationStatistics Valid=669, Invalid=7887, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 17:19:34,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9609 states. [2021-06-05 17:19:34,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9609 to 5309. [2021-06-05 17:19:34,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5308 states have (on average 3.3896006028636023) internal successors, (17992), 5308 states have internal predecessors, (17992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 17992 transitions. [2021-06-05 17:19:34,676 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 17992 transitions. Word has length 39 [2021-06-05 17:19:34,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:34,677 INFO L482 AbstractCegarLoop]: Abstraction has 5309 states and 17992 transitions. [2021-06-05 17:19:34,677 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) [2021-06-05 17:19:34,677 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 17992 transitions. [2021-06-05 17:19:34,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:34,682 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:34,682 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:34,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-06-05 17:19:34,682 INFO L430 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:34,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:34,683 INFO L82 PathProgramCache]: Analyzing trace with hash 855930998, now seen corresponding path program 360 times [2021-06-05 17:19:34,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:34,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002741710] [2021-06-05 17:19:34,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:34,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:34,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:34,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002741710] [2021-06-05 17:19:34,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002741710] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:34,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:34,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:34,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420736256] [2021-06-05 17:19:34,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:34,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:34,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:34,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:34,860 INFO L87 Difference]: Start difference. First operand 5309 states and 17992 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:37,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:37,823 INFO L93 Difference]: Finished difference Result 9489 states and 31430 transitions. [2021-06-05 17:19:37,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-06-05 17:19:37,823 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:37,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:37,837 INFO L225 Difference]: With dead ends: 9489 [2021-06-05 17:19:37,837 INFO L226 Difference]: Without dead ends: 9338 [2021-06-05 17:19:37,837 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2733 ImplicationChecksByTransitivity, 1732.1ms TimeCoverageRelationStatistics Valid=650, Invalid=7906, Unknown=0, NotChecked=0, Total=8556 [2021-06-05 17:19:37,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9338 states. [2021-06-05 17:19:37,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9338 to 5286. [2021-06-05 17:19:37,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 5285 states have (on average 3.3892147587511827) internal successors, (17912), 5285 states have internal predecessors, (17912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:37,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 17912 transitions. [2021-06-05 17:19:37,932 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 17912 transitions. Word has length 39 [2021-06-05 17:19:37,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:37,932 INFO L482 AbstractCegarLoop]: Abstraction has 5286 states and 17912 transitions. [2021-06-05 17:19:37,932 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) [2021-06-05 17:19:37,932 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 17912 transitions. [2021-06-05 17:19:37,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:37,938 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:37,938 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:37,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-06-05 17:19:37,938 INFO L430 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:37,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:37,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1071710760, now seen corresponding path program 361 times [2021-06-05 17:19:37,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:37,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400157831] [2021-06-05 17:19:37,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:38,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:38,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400157831] [2021-06-05 17:19:38,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400157831] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:38,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:38,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:38,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079066091] [2021-06-05 17:19:38,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:38,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:38,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:38,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:38,117 INFO L87 Difference]: Start difference. First operand 5286 states and 17912 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:40,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:40,995 INFO L93 Difference]: Finished difference Result 9665 states and 31976 transitions. [2021-06-05 17:19:40,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-06-05 17:19:40,995 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:40,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:41,010 INFO L225 Difference]: With dead ends: 9665 [2021-06-05 17:19:41,010 INFO L226 Difference]: Without dead ends: 9525 [2021-06-05 17:19:41,011 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2595 ImplicationChecksByTransitivity, 1682.0ms TimeCoverageRelationStatistics Valid=633, Invalid=7557, Unknown=0, NotChecked=0, Total=8190 [2021-06-05 17:19:41,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9525 states. [2021-06-05 17:19:41,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9525 to 5237. [2021-06-05 17:19:41,092 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) [2021-06-05 17:19:41,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 17747 transitions. [2021-06-05 17:19:41,099 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 17747 transitions. Word has length 39 [2021-06-05 17:19:41,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:41,100 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 17747 transitions. [2021-06-05 17:19:41,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:41,100 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 17747 transitions. [2021-06-05 17:19:41,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:41,105 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:41,105 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:41,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-06-05 17:19:41,106 INFO L430 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:41,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:41,106 INFO L82 PathProgramCache]: Analyzing trace with hash -562346440, now seen corresponding path program 362 times [2021-06-05 17:19:41,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:41,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387406609] [2021-06-05 17:19:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:41,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:41,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387406609] [2021-06-05 17:19:41,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387406609] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:41,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:41,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:41,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628974592] [2021-06-05 17:19:41,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:41,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:41,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:41,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:41,284 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) [2021-06-05 17:19:42,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:42,983 INFO L93 Difference]: Finished difference Result 5863 states and 19501 transitions. [2021-06-05 17:19:42,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 17:19:42,983 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:42,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:42,992 INFO L225 Difference]: With dead ends: 5863 [2021-06-05 17:19:42,992 INFO L226 Difference]: Without dead ends: 5799 [2021-06-05 17:19:42,992 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 1111.6ms TimeCoverageRelationStatistics Valid=349, Invalid=3811, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 17:19:43,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2021-06-05 17:19:43,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 5241. [2021-06-05 17:19:43,052 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) [2021-06-05 17:19:43,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 17757 transitions. [2021-06-05 17:19:43,060 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 17757 transitions. Word has length 39 [2021-06-05 17:19:43,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:43,060 INFO L482 AbstractCegarLoop]: Abstraction has 5241 states and 17757 transitions. [2021-06-05 17:19:43,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:43,060 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 17757 transitions. [2021-06-05 17:19:43,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:43,066 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:43,066 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:43,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-06-05 17:19:43,066 INFO L430 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:43,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:43,066 INFO L82 PathProgramCache]: Analyzing trace with hash 356137130, now seen corresponding path program 363 times [2021-06-05 17:19:43,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:43,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338678011] [2021-06-05 17:19:43,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:43,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:43,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:43,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338678011] [2021-06-05 17:19:43,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338678011] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:43,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:43,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:43,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088165508] [2021-06-05 17:19:43,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:43,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:43,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:43,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:43,256 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) [2021-06-05 17:19:44,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:44,386 INFO L93 Difference]: Finished difference Result 5680 states and 18997 transitions. [2021-06-05 17:19:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:19:44,387 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:44,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:44,395 INFO L225 Difference]: With dead ends: 5680 [2021-06-05 17:19:44,395 INFO L226 Difference]: Without dead ends: 5637 [2021-06-05 17:19:44,395 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 706.4ms TimeCoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 17:19:44,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5637 states. [2021-06-05 17:19:44,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5637 to 5247. [2021-06-05 17:19:44,449 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) [2021-06-05 17:19:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 17770 transitions. [2021-06-05 17:19:44,457 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 17770 transitions. Word has length 39 [2021-06-05 17:19:44,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:44,457 INFO L482 AbstractCegarLoop]: Abstraction has 5247 states and 17770 transitions. [2021-06-05 17:19:44,457 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:44,457 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 17770 transitions. [2021-06-05 17:19:44,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:44,462 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:44,462 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:44,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-06-05 17:19:44,462 INFO L430 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:44,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:44,463 INFO L82 PathProgramCache]: Analyzing trace with hash 376285864, now seen corresponding path program 364 times [2021-06-05 17:19:44,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:44,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761171564] [2021-06-05 17:19:44,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:44,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:44,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:44,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761171564] [2021-06-05 17:19:44,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761171564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:44,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:44,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:44,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449423379] [2021-06-05 17:19:44,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:44,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:44,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:44,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:44,641 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) [2021-06-05 17:19:45,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:45,784 INFO L93 Difference]: Finished difference Result 5643 states and 18915 transitions. [2021-06-05 17:19:45,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:19:45,784 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:45,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:45,792 INFO L225 Difference]: With dead ends: 5643 [2021-06-05 17:19:45,792 INFO L226 Difference]: Without dead ends: 5600 [2021-06-05 17:19:45,793 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 729.3ms TimeCoverageRelationStatistics Valid=226, Invalid=2126, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 17:19:45,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5600 states. [2021-06-05 17:19:45,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5600 to 5243. [2021-06-05 17:19:45,850 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) [2021-06-05 17:19:45,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 17760 transitions. [2021-06-05 17:19:45,858 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 17760 transitions. Word has length 39 [2021-06-05 17:19:45,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:45,858 INFO L482 AbstractCegarLoop]: Abstraction has 5243 states and 17760 transitions. [2021-06-05 17:19:45,858 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:45,858 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 17760 transitions. [2021-06-05 17:19:45,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:45,863 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:45,863 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:45,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-06-05 17:19:45,863 INFO L430 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:45,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:45,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1528789352, now seen corresponding path program 365 times [2021-06-05 17:19:45,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:45,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493606640] [2021-06-05 17:19:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:46,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:46,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493606640] [2021-06-05 17:19:46,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493606640] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:46,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:46,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:46,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641503398] [2021-06-05 17:19:46,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:46,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:46,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:46,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:46,042 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) [2021-06-05 17:19:47,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:47,318 INFO L93 Difference]: Finished difference Result 5714 states and 19112 transitions. [2021-06-05 17:19:47,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 17:19:47,318 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:47,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:47,328 INFO L225 Difference]: With dead ends: 5714 [2021-06-05 17:19:47,328 INFO L226 Difference]: Without dead ends: 5654 [2021-06-05 17:19:47,328 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 829.0ms TimeCoverageRelationStatistics Valid=257, Invalid=2499, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 17:19:47,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2021-06-05 17:19:47,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 5237. [2021-06-05 17:19:47,397 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) [2021-06-05 17:19:47,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 17747 transitions. [2021-06-05 17:19:47,407 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 17747 transitions. Word has length 39 [2021-06-05 17:19:47,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:47,407 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 17747 transitions. [2021-06-05 17:19:47,407 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 17747 transitions. [2021-06-05 17:19:47,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:47,413 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:47,413 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:47,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-06-05 17:19:47,413 INFO L430 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:47,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:47,414 INFO L82 PathProgramCache]: Analyzing trace with hash -550777190, now seen corresponding path program 366 times [2021-06-05 17:19:47,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:47,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004147367] [2021-06-05 17:19:47,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:47,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:47,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004147367] [2021-06-05 17:19:47,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004147367] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:47,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:47,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:19:47,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284079060] [2021-06-05 17:19:47,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:19:47,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:47,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:19:47,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:19:47,581 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) [2021-06-05 17:19:48,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:48,690 INFO L93 Difference]: Finished difference Result 5682 states and 19052 transitions. [2021-06-05 17:19:48,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:19:48,690 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 [2021-06-05 17:19:48,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:48,699 INFO L225 Difference]: With dead ends: 5682 [2021-06-05 17:19:48,699 INFO L226 Difference]: Without dead ends: 5606 [2021-06-05 17:19:48,699 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 696.7ms TimeCoverageRelationStatistics Valid=214, Invalid=2042, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 17:19:48,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5606 states. [2021-06-05 17:19:48,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5606 to 5249. [2021-06-05 17:19:48,762 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) [2021-06-05 17:19:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 17771 transitions. [2021-06-05 17:19:48,770 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 17771 transitions. Word has length 39 [2021-06-05 17:19:48,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:48,771 INFO L482 AbstractCegarLoop]: Abstraction has 5249 states and 17771 transitions. [2021-06-05 17:19:48,771 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:48,771 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 17771 transitions. [2021-06-05 17:19:48,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:48,777 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:48,777 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:48,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-06-05 17:19:48,777 INFO L430 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:48,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:48,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1568830802, now seen corresponding path program 367 times [2021-06-05 17:19:48,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:48,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131391084] [2021-06-05 17:19:48,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:48,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:48,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131391084] [2021-06-05 17:19:48,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131391084] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:48,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:48,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:48,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069963247] [2021-06-05 17:19:48,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:48,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:48,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:48,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:48,957 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) [2021-06-05 17:19:50,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:50,174 INFO L93 Difference]: Finished difference Result 5664 states and 18998 transitions. [2021-06-05 17:19:50,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 17:19:50,174 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:50,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:50,182 INFO L225 Difference]: With dead ends: 5664 [2021-06-05 17:19:50,183 INFO L226 Difference]: Without dead ends: 5594 [2021-06-05 17:19:50,183 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 762.5ms TimeCoverageRelationStatistics Valid=233, Invalid=2317, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:19:50,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2021-06-05 17:19:50,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 5237. [2021-06-05 17:19:50,238 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) [2021-06-05 17:19:50,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 17743 transitions. [2021-06-05 17:19:50,246 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 17743 transitions. Word has length 39 [2021-06-05 17:19:50,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:50,246 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 17743 transitions. [2021-06-05 17:19:50,246 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:50,246 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 17743 transitions. [2021-06-05 17:19:50,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:50,252 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:50,252 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:50,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-06-05 17:19:50,252 INFO L430 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:50,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:50,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1422348750, now seen corresponding path program 368 times [2021-06-05 17:19:50,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:50,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5872592] [2021-06-05 17:19:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:50,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:50,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:50,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5872592] [2021-06-05 17:19:50,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5872592] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:50,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:50,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:50,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416902617] [2021-06-05 17:19:50,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:50,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:50,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:50,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:50,429 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) [2021-06-05 17:19:52,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:52,650 INFO L93 Difference]: Finished difference Result 8130 states and 27321 transitions. [2021-06-05 17:19:52,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-05 17:19:52,650 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:52,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:52,663 INFO L225 Difference]: With dead ends: 8130 [2021-06-05 17:19:52,663 INFO L226 Difference]: Without dead ends: 8024 [2021-06-05 17:19:52,663 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1649 ImplicationChecksByTransitivity, 1327.4ms TimeCoverageRelationStatistics Valid=457, Invalid=5243, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 17:19:52,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8024 states. [2021-06-05 17:19:52,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8024 to 5290. [2021-06-05 17:19:52,735 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) [2021-06-05 17:19:52,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 17925 transitions. [2021-06-05 17:19:52,743 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 17925 transitions. Word has length 39 [2021-06-05 17:19:52,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:52,743 INFO L482 AbstractCegarLoop]: Abstraction has 5290 states and 17925 transitions. [2021-06-05 17:19:52,743 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:52,743 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 17925 transitions. [2021-06-05 17:19:52,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:52,748 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:52,748 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:52,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-06-05 17:19:52,749 INFO L430 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:52,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:52,749 INFO L82 PathProgramCache]: Analyzing trace with hash -358249552, now seen corresponding path program 369 times [2021-06-05 17:19:52,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:52,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159434265] [2021-06-05 17:19:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:52,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:52,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159434265] [2021-06-05 17:19:52,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159434265] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:52,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:52,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:52,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838198109] [2021-06-05 17:19:52,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:52,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:52,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:52,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:52,928 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) [2021-06-05 17:19:55,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:55,482 INFO L93 Difference]: Finished difference Result 8948 states and 30175 transitions. [2021-06-05 17:19:55,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-05 17:19:55,482 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 [2021-06-05 17:19:55,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:55,495 INFO L225 Difference]: With dead ends: 8948 [2021-06-05 17:19:55,495 INFO L226 Difference]: Without dead ends: 8896 [2021-06-05 17:19:55,496 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2071 ImplicationChecksByTransitivity, 1502.1ms TimeCoverageRelationStatistics Valid=513, Invalid=6293, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 17:19:55,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8896 states. [2021-06-05 17:19:55,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8896 to 5264. [2021-06-05 17:19:55,572 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) [2021-06-05 17:19:55,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 17842 transitions. [2021-06-05 17:19:55,579 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 17842 transitions. Word has length 39 [2021-06-05 17:19:55,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:55,580 INFO L482 AbstractCegarLoop]: Abstraction has 5264 states and 17842 transitions. [2021-06-05 17:19:55,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:55,580 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 17842 transitions. [2021-06-05 17:19:55,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:55,585 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:55,585 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:55,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-06-05 17:19:55,585 INFO L430 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:55,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:55,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1954134976, now seen corresponding path program 370 times [2021-06-05 17:19:55,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:55,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182709939] [2021-06-05 17:19:55,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:55,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:55,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182709939] [2021-06-05 17:19:55,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182709939] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:55,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:55,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:55,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456816003] [2021-06-05 17:19:55,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:55,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:55,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:55,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:55,762 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) [2021-06-05 17:19:57,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:57,214 INFO L93 Difference]: Finished difference Result 7462 states and 24986 transitions. [2021-06-05 17:19:57,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 17:19:57,214 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:19:57,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:57,226 INFO L225 Difference]: With dead ends: 7462 [2021-06-05 17:19:57,226 INFO L226 Difference]: Without dead ends: 7407 [2021-06-05 17:19:57,226 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 786.0ms TimeCoverageRelationStatistics Valid=266, Invalid=2596, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 17:19:57,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7407 states. [2021-06-05 17:19:57,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7407 to 5290. [2021-06-05 17:19:57,295 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) [2021-06-05 17:19:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 17932 transitions. [2021-06-05 17:19:57,303 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 17932 transitions. Word has length 39 [2021-06-05 17:19:57,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:57,303 INFO L482 AbstractCegarLoop]: Abstraction has 5290 states and 17932 transitions. [2021-06-05 17:19:57,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:19:57,303 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 17932 transitions. [2021-06-05 17:19:57,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:57,308 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:57,308 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:57,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-06-05 17:19:57,309 INFO L430 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:57,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:57,309 INFO L82 PathProgramCache]: Analyzing trace with hash -781482754, now seen corresponding path program 371 times [2021-06-05 17:19:57,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:57,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766578945] [2021-06-05 17:19:57,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:57,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:57,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766578945] [2021-06-05 17:19:57,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766578945] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:57,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:57,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:57,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371432080] [2021-06-05 17:19:57,491 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:57,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:57,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:57,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:57,491 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) [2021-06-05 17:19:59,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:19:59,409 INFO L93 Difference]: Finished difference Result 8195 states and 27530 transitions. [2021-06-05 17:19:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 17:19:59,409 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 [2021-06-05 17:19:59,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:19:59,422 INFO L225 Difference]: With dead ends: 8195 [2021-06-05 17:19:59,422 INFO L226 Difference]: Without dead ends: 8135 [2021-06-05 17:19:59,422 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 1075.0ms TimeCoverageRelationStatistics Valid=357, Invalid=3803, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 17:19:59,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8135 states. [2021-06-05 17:19:59,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8135 to 5288. [2021-06-05 17:19:59,524 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) [2021-06-05 17:19:59,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 17927 transitions. [2021-06-05 17:19:59,533 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 17927 transitions. Word has length 39 [2021-06-05 17:19:59,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:19:59,533 INFO L482 AbstractCegarLoop]: Abstraction has 5288 states and 17927 transitions. [2021-06-05 17:19:59,533 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) [2021-06-05 17:19:59,533 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 17927 transitions. [2021-06-05 17:19:59,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:19:59,538 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:19:59,538 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:19:59,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-06-05 17:19:59,539 INFO L430 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:19:59,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:19:59,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1636080940, now seen corresponding path program 372 times [2021-06-05 17:19:59,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:19:59,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604018259] [2021-06-05 17:19:59,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:19:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:19:59,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:19:59,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:19:59,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604018259] [2021-06-05 17:19:59,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604018259] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:19:59,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:19:59,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:19:59,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947216026] [2021-06-05 17:19:59,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:19:59,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:19:59,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:19:59,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:19:59,753 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) [2021-06-05 17:20:01,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:01,178 INFO L93 Difference]: Finished difference Result 7383 states and 24812 transitions. [2021-06-05 17:20:01,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 17:20:01,178 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:01,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:01,189 INFO L225 Difference]: With dead ends: 7383 [2021-06-05 17:20:01,189 INFO L226 Difference]: Without dead ends: 7292 [2021-06-05 17:20:01,190 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 796.0ms TimeCoverageRelationStatistics Valid=238, Invalid=2414, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 17:20:01,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7292 states. [2021-06-05 17:20:01,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7292 to 5288. [2021-06-05 17:20:01,258 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) [2021-06-05 17:20:01,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 17921 transitions. [2021-06-05 17:20:01,266 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 17921 transitions. Word has length 39 [2021-06-05 17:20:01,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:01,266 INFO L482 AbstractCegarLoop]: Abstraction has 5288 states and 17921 transitions. [2021-06-05 17:20:01,266 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:01,266 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 17921 transitions. [2021-06-05 17:20:01,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:01,272 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:01,272 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:01,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-06-05 17:20:01,272 INFO L430 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:01,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:01,272 INFO L82 PathProgramCache]: Analyzing trace with hash 133598734, now seen corresponding path program 373 times [2021-06-05 17:20:01,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:01,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825142001] [2021-06-05 17:20:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:01,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:01,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825142001] [2021-06-05 17:20:01,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825142001] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:01,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:01,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:01,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437659067] [2021-06-05 17:20:01,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:01,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:01,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:01,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:01,454 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) [2021-06-05 17:20:03,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:03,523 INFO L93 Difference]: Finished difference Result 8285 states and 27895 transitions. [2021-06-05 17:20:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 17:20:03,524 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:03,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:03,536 INFO L225 Difference]: With dead ends: 8285 [2021-06-05 17:20:03,536 INFO L226 Difference]: Without dead ends: 8185 [2021-06-05 17:20:03,537 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1115.5ms TimeCoverageRelationStatistics Valid=367, Invalid=3923, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 17:20:03,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8185 states. [2021-06-05 17:20:03,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8185 to 5282. [2021-06-05 17:20:03,613 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) [2021-06-05 17:20:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 17902 transitions. [2021-06-05 17:20:03,622 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 17902 transitions. Word has length 39 [2021-06-05 17:20:03,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:03,622 INFO L482 AbstractCegarLoop]: Abstraction has 5282 states and 17902 transitions. [2021-06-05 17:20:03,622 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) [2021-06-05 17:20:03,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 17902 transitions. [2021-06-05 17:20:03,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:03,629 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:03,629 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:03,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-06-05 17:20:03,629 INFO L430 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:03,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:03,629 INFO L82 PathProgramCache]: Analyzing trace with hash -103026262, now seen corresponding path program 374 times [2021-06-05 17:20:03,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:03,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834787262] [2021-06-05 17:20:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:03,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:03,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:03,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834787262] [2021-06-05 17:20:03,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834787262] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:03,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:03,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:20:03,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732953662] [2021-06-05 17:20:03,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:20:03,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:03,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:20:03,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:20:03,796 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) [2021-06-05 17:20:04,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:04,860 INFO L93 Difference]: Finished difference Result 5634 states and 18942 transitions. [2021-06-05 17:20:04,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 17:20:04,861 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:04,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:04,872 INFO L225 Difference]: With dead ends: 5634 [2021-06-05 17:20:04,872 INFO L226 Difference]: Without dead ends: 5558 [2021-06-05 17:20:04,872 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 642.2ms TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 17:20:04,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2021-06-05 17:20:04,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 5326. [2021-06-05 17:20:04,931 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) [2021-06-05 17:20:04,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5326 states to 5326 states and 18032 transitions. [2021-06-05 17:20:04,940 INFO L78 Accepts]: Start accepts. Automaton has 5326 states and 18032 transitions. Word has length 39 [2021-06-05 17:20:04,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:04,940 INFO L482 AbstractCegarLoop]: Abstraction has 5326 states and 18032 transitions. [2021-06-05 17:20:04,940 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:04,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5326 states and 18032 transitions. [2021-06-05 17:20:04,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:04,946 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:04,946 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:04,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-06-05 17:20:04,946 INFO L430 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:04,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:04,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1121079874, now seen corresponding path program 375 times [2021-06-05 17:20:04,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:04,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711961779] [2021-06-05 17:20:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:05,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:05,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711961779] [2021-06-05 17:20:05,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711961779] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:05,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:05,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:05,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986568901] [2021-06-05 17:20:05,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:05,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:05,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:05,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:05,129 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) [2021-06-05 17:20:06,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:06,272 INFO L93 Difference]: Finished difference Result 5616 states and 18888 transitions. [2021-06-05 17:20:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 17:20:06,272 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 [2021-06-05 17:20:06,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:06,281 INFO L225 Difference]: With dead ends: 5616 [2021-06-05 17:20:06,281 INFO L226 Difference]: Without dead ends: 5550 [2021-06-05 17:20:06,281 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 717.1ms TimeCoverageRelationStatistics Valid=207, Invalid=2049, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 17:20:06,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5550 states. [2021-06-05 17:20:06,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5550 to 5318. [2021-06-05 17:20:06,340 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) [2021-06-05 17:20:06,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 18008 transitions. [2021-06-05 17:20:06,349 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 18008 transitions. Word has length 39 [2021-06-05 17:20:06,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:06,349 INFO L482 AbstractCegarLoop]: Abstraction has 5318 states and 18008 transitions. [2021-06-05 17:20:06,349 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:06,349 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 18008 transitions. [2021-06-05 17:20:06,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:06,355 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:06,355 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:06,355 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-06-05 17:20:06,355 INFO L430 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:06,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:06,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1403345528, now seen corresponding path program 376 times [2021-06-05 17:20:06,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:06,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106082842] [2021-06-05 17:20:06,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:06,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:06,536 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:06,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106082842] [2021-06-05 17:20:06,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106082842] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:06,536 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:06,536 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:06,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261836135] [2021-06-05 17:20:06,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:06,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:06,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:06,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:06,536 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) [2021-06-05 17:20:07,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:07,697 INFO L93 Difference]: Finished difference Result 5629 states and 18921 transitions. [2021-06-05 17:20:07,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 17:20:07,697 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:07,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:07,706 INFO L225 Difference]: With dead ends: 5629 [2021-06-05 17:20:07,706 INFO L226 Difference]: Without dead ends: 5499 [2021-06-05 17:20:07,706 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 712.5ms TimeCoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 17:20:07,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2021-06-05 17:20:07,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 5282. [2021-06-05 17:20:07,770 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) [2021-06-05 17:20:07,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 17894 transitions. [2021-06-05 17:20:07,780 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 17894 transitions. Word has length 39 [2021-06-05 17:20:07,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:07,780 INFO L482 AbstractCegarLoop]: Abstraction has 5282 states and 17894 transitions. [2021-06-05 17:20:07,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:07,780 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 17894 transitions. [2021-06-05 17:20:07,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:07,786 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:07,786 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:07,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-06-05 17:20:07,786 INFO L430 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:07,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:07,787 INFO L82 PathProgramCache]: Analyzing trace with hash -355827722, now seen corresponding path program 377 times [2021-06-05 17:20:07,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:07,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749333311] [2021-06-05 17:20:07,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:07,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:07,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:07,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749333311] [2021-06-05 17:20:07,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749333311] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:07,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:07,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:07,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196259536] [2021-06-05 17:20:07,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:07,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:07,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:07,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:07,970 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) [2021-06-05 17:20:09,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:09,964 INFO L93 Difference]: Finished difference Result 5884 states and 19567 transitions. [2021-06-05 17:20:09,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 17:20:09,965 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:09,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:09,973 INFO L225 Difference]: With dead ends: 5884 [2021-06-05 17:20:09,973 INFO L226 Difference]: Without dead ends: 5820 [2021-06-05 17:20:09,974 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 1350.0ms TimeCoverageRelationStatistics Valid=416, Invalid=4554, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 17:20:09,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5820 states. [2021-06-05 17:20:10,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5820 to 5292. [2021-06-05 17:20:10,037 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) [2021-06-05 17:20:10,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 17928 transitions. [2021-06-05 17:20:10,046 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 17928 transitions. Word has length 39 [2021-06-05 17:20:10,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:10,046 INFO L482 AbstractCegarLoop]: Abstraction has 5292 states and 17928 transitions. [2021-06-05 17:20:10,046 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) [2021-06-05 17:20:10,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 17928 transitions. [2021-06-05 17:20:10,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:10,052 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:10,052 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:10,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-06-05 17:20:10,052 INFO L430 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:10,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:10,052 INFO L82 PathProgramCache]: Analyzing trace with hash 562655848, now seen corresponding path program 378 times [2021-06-05 17:20:10,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:10,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416335947] [2021-06-05 17:20:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:10,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:10,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416335947] [2021-06-05 17:20:10,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416335947] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:10,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:10,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:10,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43804248] [2021-06-05 17:20:10,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:10,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:10,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:10,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:10,233 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) [2021-06-05 17:20:11,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:11,511 INFO L93 Difference]: Finished difference Result 5732 states and 19160 transitions. [2021-06-05 17:20:11,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 17:20:11,511 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 [2021-06-05 17:20:11,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:11,520 INFO L225 Difference]: With dead ends: 5732 [2021-06-05 17:20:11,520 INFO L226 Difference]: Without dead ends: 5689 [2021-06-05 17:20:11,520 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 813.9ms TimeCoverageRelationStatistics Valid=261, Invalid=2495, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 17:20:11,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5689 states. [2021-06-05 17:20:11,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5689 to 5298. [2021-06-05 17:20:11,580 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) [2021-06-05 17:20:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5298 states to 5298 states and 17941 transitions. [2021-06-05 17:20:11,588 INFO L78 Accepts]: Start accepts. Automaton has 5298 states and 17941 transitions. Word has length 39 [2021-06-05 17:20:11,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:11,588 INFO L482 AbstractCegarLoop]: Abstraction has 5298 states and 17941 transitions. [2021-06-05 17:20:11,588 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:11,588 INFO L276 IsEmpty]: Start isEmpty. Operand 5298 states and 17941 transitions. [2021-06-05 17:20:11,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:11,593 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:11,593 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:11,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-06-05 17:20:11,594 INFO L430 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:11,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:11,594 INFO L82 PathProgramCache]: Analyzing trace with hash 582804582, now seen corresponding path program 379 times [2021-06-05 17:20:11,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:11,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835025613] [2021-06-05 17:20:11,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:11,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:11,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:11,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835025613] [2021-06-05 17:20:11,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835025613] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:11,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:11,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:11,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858399817] [2021-06-05 17:20:11,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:11,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:11,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:11,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:11,772 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) [2021-06-05 17:20:13,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:13,072 INFO L93 Difference]: Finished difference Result 5695 states and 19078 transitions. [2021-06-05 17:20:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 17:20:13,072 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 [2021-06-05 17:20:13,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:13,080 INFO L225 Difference]: With dead ends: 5695 [2021-06-05 17:20:13,080 INFO L226 Difference]: Without dead ends: 5652 [2021-06-05 17:20:13,080 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 844.9ms TimeCoverageRelationStatistics Valid=264, Invalid=2492, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 17:20:13,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2021-06-05 17:20:13,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 5294. [2021-06-05 17:20:13,138 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) [2021-06-05 17:20:13,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 17931 transitions. [2021-06-05 17:20:13,146 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 17931 transitions. Word has length 39 [2021-06-05 17:20:13,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:13,146 INFO L482 AbstractCegarLoop]: Abstraction has 5294 states and 17931 transitions. [2021-06-05 17:20:13,146 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) [2021-06-05 17:20:13,146 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 17931 transitions. [2021-06-05 17:20:13,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:13,152 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:13,152 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:13,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-06-05 17:20:13,152 INFO L430 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:13,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:13,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1735308070, now seen corresponding path program 380 times [2021-06-05 17:20:13,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:13,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666273551] [2021-06-05 17:20:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:13,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:13,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:13,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666273551] [2021-06-05 17:20:13,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666273551] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:13,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:13,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:13,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401764842] [2021-06-05 17:20:13,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:13,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:13,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:13,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:13,336 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) [2021-06-05 17:20:14,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:14,814 INFO L93 Difference]: Finished difference Result 5736 states and 19182 transitions. [2021-06-05 17:20:14,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:20:14,814 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:14,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:14,823 INFO L225 Difference]: With dead ends: 5736 [2021-06-05 17:20:14,823 INFO L226 Difference]: Without dead ends: 5676 [2021-06-05 17:20:14,824 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 980.3ms TimeCoverageRelationStatistics Valid=308, Invalid=2998, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 17:20:14,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5676 states. [2021-06-05 17:20:14,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5676 to 5300. [2021-06-05 17:20:14,921 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) [2021-06-05 17:20:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 17952 transitions. [2021-06-05 17:20:14,929 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 17952 transitions. Word has length 39 [2021-06-05 17:20:14,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:14,929 INFO L482 AbstractCegarLoop]: Abstraction has 5300 states and 17952 transitions. [2021-06-05 17:20:14,929 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:14,929 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 17952 transitions. [2021-06-05 17:20:14,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:14,935 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:14,935 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:14,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-06-05 17:20:14,935 INFO L430 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:14,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:14,935 INFO L82 PathProgramCache]: Analyzing trace with hash -344258472, now seen corresponding path program 381 times [2021-06-05 17:20:14,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:14,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595506338] [2021-06-05 17:20:14,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:15,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:15,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595506338] [2021-06-05 17:20:15,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595506338] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:15,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:15,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:20:15,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31659495] [2021-06-05 17:20:15,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:20:15,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:15,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:20:15,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:20:15,102 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) [2021-06-05 17:20:16,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:16,381 INFO L93 Difference]: Finished difference Result 5707 states and 19123 transitions. [2021-06-05 17:20:16,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 17:20:16,381 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:16,390 INFO L225 Difference]: With dead ends: 5707 [2021-06-05 17:20:16,390 INFO L226 Difference]: Without dead ends: 5631 [2021-06-05 17:20:16,390 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 830.7ms TimeCoverageRelationStatistics Valid=260, Invalid=2496, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 17:20:16,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2021-06-05 17:20:16,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 5312. [2021-06-05 17:20:16,449 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) [2021-06-05 17:20:16,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 17976 transitions. [2021-06-05 17:20:16,457 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 17976 transitions. Word has length 39 [2021-06-05 17:20:16,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:16,457 INFO L482 AbstractCegarLoop]: Abstraction has 5312 states and 17976 transitions. [2021-06-05 17:20:16,457 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) [2021-06-05 17:20:16,458 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 17976 transitions. [2021-06-05 17:20:16,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:16,463 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:16,463 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:16,463 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-06-05 17:20:16,463 INFO L430 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:16,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:16,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1362312084, now seen corresponding path program 382 times [2021-06-05 17:20:16,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:16,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141481692] [2021-06-05 17:20:16,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:16,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:16,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141481692] [2021-06-05 17:20:16,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141481692] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:16,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:16,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:16,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713201285] [2021-06-05 17:20:16,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:16,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:16,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:16,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:16,645 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) [2021-06-05 17:20:18,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:18,055 INFO L93 Difference]: Finished difference Result 5689 states and 19069 transitions. [2021-06-05 17:20:18,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 17:20:18,055 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:18,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:18,064 INFO L225 Difference]: With dead ends: 5689 [2021-06-05 17:20:18,064 INFO L226 Difference]: Without dead ends: 5619 [2021-06-05 17:20:18,064 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 936.6ms TimeCoverageRelationStatistics Valid=280, Invalid=2800, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:20:18,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5619 states. [2021-06-05 17:20:18,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5619 to 5300. [2021-06-05 17:20:18,121 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) [2021-06-05 17:20:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 17946 transitions. [2021-06-05 17:20:18,131 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 17946 transitions. Word has length 39 [2021-06-05 17:20:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:18,131 INFO L482 AbstractCegarLoop]: Abstraction has 5300 states and 17946 transitions. [2021-06-05 17:20:18,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:18,131 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 17946 transitions. [2021-06-05 17:20:18,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:18,138 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:18,138 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:18,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-06-05 17:20:18,138 INFO L430 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:18,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:18,138 INFO L82 PathProgramCache]: Analyzing trace with hash -885924214, now seen corresponding path program 383 times [2021-06-05 17:20:18,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:18,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891460560] [2021-06-05 17:20:18,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:18,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:18,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891460560] [2021-06-05 17:20:18,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891460560] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:18,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:18,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:18,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039606483] [2021-06-05 17:20:18,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:18,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:18,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:18,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:18,321 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) [2021-06-05 17:20:20,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:20,222 INFO L93 Difference]: Finished difference Result 5861 states and 19500 transitions. [2021-06-05 17:20:20,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 17:20:20,222 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:20,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:20,230 INFO L225 Difference]: With dead ends: 5861 [2021-06-05 17:20:20,230 INFO L226 Difference]: Without dead ends: 5797 [2021-06-05 17:20:20,230 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 1240.0ms TimeCoverageRelationStatistics Valid=366, Invalid=4056, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 17:20:20,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5797 states. [2021-06-05 17:20:20,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5797 to 5309. [2021-06-05 17:20:20,288 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) [2021-06-05 17:20:20,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 17970 transitions. [2021-06-05 17:20:20,297 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 17970 transitions. Word has length 39 [2021-06-05 17:20:20,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:20,297 INFO L482 AbstractCegarLoop]: Abstraction has 5309 states and 17970 transitions. [2021-06-05 17:20:20,297 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) [2021-06-05 17:20:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 17970 transitions. [2021-06-05 17:20:20,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:20,303 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:20,303 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:20,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-06-05 17:20:20,304 INFO L430 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:20,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:20,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1871623852, now seen corresponding path program 384 times [2021-06-05 17:20:20,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:20,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037489259] [2021-06-05 17:20:20,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:20,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:20,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037489259] [2021-06-05 17:20:20,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037489259] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:20,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:20,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:20,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781918145] [2021-06-05 17:20:20,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:20,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:20,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:20,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:20,487 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) [2021-06-05 17:20:21,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:21,678 INFO L93 Difference]: Finished difference Result 5712 states and 19100 transitions. [2021-06-05 17:20:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 17:20:21,679 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:21,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:21,689 INFO L225 Difference]: With dead ends: 5712 [2021-06-05 17:20:21,689 INFO L226 Difference]: Without dead ends: 5669 [2021-06-05 17:20:21,690 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 726.3ms TimeCoverageRelationStatistics Valid=224, Invalid=2226, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 17:20:21,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2021-06-05 17:20:21,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 5318. [2021-06-05 17:20:21,755 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) [2021-06-05 17:20:21,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 17991 transitions. [2021-06-05 17:20:21,764 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 17991 transitions. Word has length 39 [2021-06-05 17:20:21,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:21,764 INFO L482 AbstractCegarLoop]: Abstraction has 5318 states and 17991 transitions. [2021-06-05 17:20:21,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:21,764 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 17991 transitions. [2021-06-05 17:20:21,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:21,770 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:21,770 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:21,770 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-06-05 17:20:21,770 INFO L430 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:21,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:21,771 INFO L82 PathProgramCache]: Analyzing trace with hash -673236308, now seen corresponding path program 385 times [2021-06-05 17:20:21,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:21,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918645199] [2021-06-05 17:20:21,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:21,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:21,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:21,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918645199] [2021-06-05 17:20:21,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918645199] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:21,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:21,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:21,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835875198] [2021-06-05 17:20:21,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:21,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:21,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:21,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:21,955 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) [2021-06-05 17:20:23,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:23,218 INFO L93 Difference]: Finished difference Result 5681 states and 19033 transitions. [2021-06-05 17:20:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 17:20:23,219 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:23,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:23,227 INFO L225 Difference]: With dead ends: 5681 [2021-06-05 17:20:23,228 INFO L226 Difference]: Without dead ends: 5630 [2021-06-05 17:20:23,228 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 776.7ms TimeCoverageRelationStatistics Valid=241, Invalid=2411, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 17:20:23,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2021-06-05 17:20:23,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 5312. [2021-06-05 17:20:23,289 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) [2021-06-05 17:20:23,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 17975 transitions. [2021-06-05 17:20:23,298 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 17975 transitions. Word has length 39 [2021-06-05 17:20:23,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:23,298 INFO L482 AbstractCegarLoop]: Abstraction has 5312 states and 17975 transitions. [2021-06-05 17:20:23,298 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) [2021-06-05 17:20:23,298 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 17975 transitions. [2021-06-05 17:20:23,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:23,305 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:23,305 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:23,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-06-05 17:20:23,305 INFO L430 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:23,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:23,305 INFO L82 PathProgramCache]: Analyzing trace with hash -56017906, now seen corresponding path program 386 times [2021-06-05 17:20:23,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:23,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632977153] [2021-06-05 17:20:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:23,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:23,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:23,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632977153] [2021-06-05 17:20:23,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632977153] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:23,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:23,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:23,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670043182] [2021-06-05 17:20:23,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:23,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:23,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:23,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:23,484 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) [2021-06-05 17:20:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:24,890 INFO L93 Difference]: Finished difference Result 5754 states and 19200 transitions. [2021-06-05 17:20:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 17:20:24,890 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:24,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:24,899 INFO L225 Difference]: With dead ends: 5754 [2021-06-05 17:20:24,899 INFO L226 Difference]: Without dead ends: 5708 [2021-06-05 17:20:24,899 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 903.3ms TimeCoverageRelationStatistics Valid=275, Invalid=2805, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:20:24,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5708 states. [2021-06-05 17:20:24,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5708 to 5319. [2021-06-05 17:20:24,958 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) [2021-06-05 17:20:24,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 17990 transitions. [2021-06-05 17:20:24,967 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 17990 transitions. Word has length 39 [2021-06-05 17:20:24,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:24,967 INFO L482 AbstractCegarLoop]: Abstraction has 5319 states and 17990 transitions. [2021-06-05 17:20:24,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:24,967 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 17990 transitions. [2021-06-05 17:20:24,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:24,973 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:24,973 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:24,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-06-05 17:20:24,973 INFO L430 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:24,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:24,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1491085396, now seen corresponding path program 387 times [2021-06-05 17:20:24,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:24,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419242991] [2021-06-05 17:20:24,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:25,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:25,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419242991] [2021-06-05 17:20:25,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419242991] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:25,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:25,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:25,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096973532] [2021-06-05 17:20:25,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:25,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:25,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:25,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:25,187 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) [2021-06-05 17:20:26,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:26,429 INFO L93 Difference]: Finished difference Result 5689 states and 19047 transitions. [2021-06-05 17:20:26,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 17:20:26,430 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:26,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:26,438 INFO L225 Difference]: With dead ends: 5689 [2021-06-05 17:20:26,438 INFO L226 Difference]: Without dead ends: 5634 [2021-06-05 17:20:26,438 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 810.2ms TimeCoverageRelationStatistics Valid=243, Invalid=2409, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 17:20:26,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5634 states. [2021-06-05 17:20:26,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5634 to 5316. [2021-06-05 17:20:26,496 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) [2021-06-05 17:20:26,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 17982 transitions. [2021-06-05 17:20:26,505 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 17982 transitions. Word has length 39 [2021-06-05 17:20:26,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:26,505 INFO L482 AbstractCegarLoop]: Abstraction has 5316 states and 17982 transitions. [2021-06-05 17:20:26,505 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:26,505 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 17982 transitions. [2021-06-05 17:20:26,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:26,511 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:26,511 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:26,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-06-05 17:20:26,511 INFO L430 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:26,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:26,511 INFO L82 PathProgramCache]: Analyzing trace with hash -2071702106, now seen corresponding path program 388 times [2021-06-05 17:20:26,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:26,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116690939] [2021-06-05 17:20:26,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:26,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:26,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116690939] [2021-06-05 17:20:26,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116690939] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:26,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:26,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-05 17:20:26,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987965868] [2021-06-05 17:20:26,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 17:20:26,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:26,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 17:20:26,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-05 17:20:26,679 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) [2021-06-05 17:20:27,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:27,985 INFO L93 Difference]: Finished difference Result 5650 states and 18957 transitions. [2021-06-05 17:20:27,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 17:20:27,986 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:27,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:27,994 INFO L225 Difference]: With dead ends: 5650 [2021-06-05 17:20:27,994 INFO L226 Difference]: Without dead ends: 5574 [2021-06-05 17:20:27,994 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 819.3ms TimeCoverageRelationStatistics Valid=249, Invalid=2403, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 17:20:28,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5574 states. [2021-06-05 17:20:28,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5574 to 5330. [2021-06-05 17:20:28,055 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) [2021-06-05 17:20:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18012 transitions. [2021-06-05 17:20:28,064 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18012 transitions. Word has length 39 [2021-06-05 17:20:28,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:28,064 INFO L482 AbstractCegarLoop]: Abstraction has 5330 states and 18012 transitions. [2021-06-05 17:20:28,064 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:28,064 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18012 transitions. [2021-06-05 17:20:28,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:28,071 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:28,071 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:28,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-06-05 17:20:28,071 INFO L430 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:28,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:28,071 INFO L82 PathProgramCache]: Analyzing trace with hash 675342856, now seen corresponding path program 389 times [2021-06-05 17:20:28,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:28,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381600474] [2021-06-05 17:20:28,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:28,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:28,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:28,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381600474] [2021-06-05 17:20:28,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381600474] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:28,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:28,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:28,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061595894] [2021-06-05 17:20:28,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:28,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:28,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:28,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:28,253 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) [2021-06-05 17:20:29,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:29,634 INFO L93 Difference]: Finished difference Result 5674 states and 18990 transitions. [2021-06-05 17:20:29,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 17:20:29,635 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 [2021-06-05 17:20:29,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:29,643 INFO L225 Difference]: With dead ends: 5674 [2021-06-05 17:20:29,643 INFO L226 Difference]: Without dead ends: 5628 [2021-06-05 17:20:29,644 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 885.8ms TimeCoverageRelationStatistics Valid=267, Invalid=2703, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 17:20:29,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2021-06-05 17:20:29,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 5330. [2021-06-05 17:20:29,705 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) [2021-06-05 17:20:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18012 transitions. [2021-06-05 17:20:29,715 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18012 transitions. Word has length 39 [2021-06-05 17:20:29,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:29,715 INFO L482 AbstractCegarLoop]: Abstraction has 5330 states and 18012 transitions. [2021-06-05 17:20:29,715 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) [2021-06-05 17:20:29,715 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18012 transitions. [2021-06-05 17:20:29,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:29,721 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:29,721 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:29,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-06-05 17:20:29,721 INFO L430 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:29,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:29,721 INFO L82 PathProgramCache]: Analyzing trace with hash -759724634, now seen corresponding path program 390 times [2021-06-05 17:20:29,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:29,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634912787] [2021-06-05 17:20:29,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:29,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:29,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:29,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634912787] [2021-06-05 17:20:29,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634912787] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:29,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:29,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:29,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989812091] [2021-06-05 17:20:29,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:29,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:29,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:29,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:29,906 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) [2021-06-05 17:20:31,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:31,126 INFO L93 Difference]: Finished difference Result 5602 states and 18822 transitions. [2021-06-05 17:20:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 17:20:31,126 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 [2021-06-05 17:20:31,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:31,134 INFO L225 Difference]: With dead ends: 5602 [2021-06-05 17:20:31,134 INFO L226 Difference]: Without dead ends: 5530 [2021-06-05 17:20:31,134 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 771.1ms TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:20:31,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5530 states. [2021-06-05 17:20:31,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5530 to 5310. [2021-06-05 17:20:31,193 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) [2021-06-05 17:20:31,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5310 states to 5310 states and 17963 transitions. [2021-06-05 17:20:31,201 INFO L78 Accepts]: Start accepts. Automaton has 5310 states and 17963 transitions. Word has length 39 [2021-06-05 17:20:31,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:31,201 INFO L482 AbstractCegarLoop]: Abstraction has 5310 states and 17963 transitions. [2021-06-05 17:20:31,201 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) [2021-06-05 17:20:31,201 INFO L276 IsEmpty]: Start isEmpty. Operand 5310 states and 17963 transitions. [2021-06-05 17:20:31,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:31,207 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:31,207 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:31,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-06-05 17:20:31,207 INFO L430 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:31,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:31,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1304361526, now seen corresponding path program 391 times [2021-06-05 17:20:31,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:31,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28715470] [2021-06-05 17:20:31,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:31,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:31,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:31,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28715470] [2021-06-05 17:20:31,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28715470] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:31,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:31,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:31,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706012582] [2021-06-05 17:20:31,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:31,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:31,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:31,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:31,388 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) [2021-06-05 17:20:32,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:32,858 INFO L93 Difference]: Finished difference Result 5762 states and 19200 transitions. [2021-06-05 17:20:32,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 17:20:32,858 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:32,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:32,867 INFO L225 Difference]: With dead ends: 5762 [2021-06-05 17:20:32,867 INFO L226 Difference]: Without dead ends: 5711 [2021-06-05 17:20:32,867 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 981.9ms TimeCoverageRelationStatistics Valid=315, Invalid=3107, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 17:20:32,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2021-06-05 17:20:32,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 5323. [2021-06-05 17:20:32,953 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) [2021-06-05 17:20:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 17999 transitions. [2021-06-05 17:20:32,962 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 17999 transitions. Word has length 39 [2021-06-05 17:20:32,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:32,962 INFO L482 AbstractCegarLoop]: Abstraction has 5323 states and 17999 transitions. [2021-06-05 17:20:32,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:32,962 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 17999 transitions. [2021-06-05 17:20:32,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:32,968 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:32,968 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:32,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-06-05 17:20:32,968 INFO L430 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:32,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:32,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1284212792, now seen corresponding path program 392 times [2021-06-05 17:20:32,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:32,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155875820] [2021-06-05 17:20:32,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:33,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:33,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155875820] [2021-06-05 17:20:33,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155875820] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:33,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:33,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:33,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945743941] [2021-06-05 17:20:33,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:33,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:33,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:33,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:33,150 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) [2021-06-05 17:20:34,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:34,529 INFO L93 Difference]: Finished difference Result 5729 states and 19122 transitions. [2021-06-05 17:20:34,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 17:20:34,530 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:34,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:34,539 INFO L225 Difference]: With dead ends: 5729 [2021-06-05 17:20:34,539 INFO L226 Difference]: Without dead ends: 5686 [2021-06-05 17:20:34,539 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 914.9ms TimeCoverageRelationStatistics Valid=292, Invalid=2788, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 17:20:34,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-06-05 17:20:34,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 5323. [2021-06-05 17:20:34,599 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) [2021-06-05 17:20:34,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5323 states to 5323 states and 17997 transitions. [2021-06-05 17:20:34,608 INFO L78 Accepts]: Start accepts. Automaton has 5323 states and 17997 transitions. Word has length 39 [2021-06-05 17:20:34,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:34,608 INFO L482 AbstractCegarLoop]: Abstraction has 5323 states and 17997 transitions. [2021-06-05 17:20:34,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:34,608 INFO L276 IsEmpty]: Start isEmpty. Operand 5323 states and 17997 transitions. [2021-06-05 17:20:34,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:34,613 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:34,613 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:34,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-06-05 17:20:34,613 INFO L430 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:34,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:34,614 INFO L82 PathProgramCache]: Analyzing trace with hash -131709304, now seen corresponding path program 393 times [2021-06-05 17:20:34,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:34,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572053314] [2021-06-05 17:20:34,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:34,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:34,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572053314] [2021-06-05 17:20:34,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572053314] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:34,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:34,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:34,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663072076] [2021-06-05 17:20:34,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:34,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:34,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:34,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:34,792 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) [2021-06-05 17:20:36,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:36,355 INFO L93 Difference]: Finished difference Result 5794 states and 19270 transitions. [2021-06-05 17:20:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 17:20:36,355 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:36,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:36,364 INFO L225 Difference]: With dead ends: 5794 [2021-06-05 17:20:36,364 INFO L226 Difference]: Without dead ends: 5734 [2021-06-05 17:20:36,364 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 1087.8ms TimeCoverageRelationStatistics Valid=338, Invalid=3322, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 17:20:36,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5734 states. [2021-06-05 17:20:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5734 to 5319. [2021-06-05 17:20:36,427 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) [2021-06-05 17:20:36,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 17986 transitions. [2021-06-05 17:20:36,436 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 17986 transitions. Word has length 39 [2021-06-05 17:20:36,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:36,436 INFO L482 AbstractCegarLoop]: Abstraction has 5319 states and 17986 transitions. [2021-06-05 17:20:36,436 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) [2021-06-05 17:20:36,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 17986 transitions. [2021-06-05 17:20:36,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:36,442 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:36,443 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:36,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-06-05 17:20:36,443 INFO L430 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:36,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:36,443 INFO L82 PathProgramCache]: Analyzing trace with hash -199454184, now seen corresponding path program 394 times [2021-06-05 17:20:36,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:36,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687874133] [2021-06-05 17:20:36,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:36,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:36,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687874133] [2021-06-05 17:20:36,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687874133] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:36,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:36,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:36,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752681609] [2021-06-05 17:20:36,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:36,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:36,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:36,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:36,623 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) [2021-06-05 17:20:37,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:37,992 INFO L93 Difference]: Finished difference Result 5736 states and 19120 transitions. [2021-06-05 17:20:37,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 17:20:37,992 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:37,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:38,001 INFO L225 Difference]: With dead ends: 5736 [2021-06-05 17:20:38,001 INFO L226 Difference]: Without dead ends: 5693 [2021-06-05 17:20:38,001 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 875.6ms TimeCoverageRelationStatistics Valid=272, Invalid=2698, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 17:20:38,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2021-06-05 17:20:38,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 5328. [2021-06-05 17:20:38,086 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) [2021-06-05 17:20:38,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 18007 transitions. [2021-06-05 17:20:38,095 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 18007 transitions. Word has length 39 [2021-06-05 17:20:38,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:38,095 INFO L482 AbstractCegarLoop]: Abstraction has 5328 states and 18007 transitions. [2021-06-05 17:20:38,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:38,095 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 18007 transitions. [2021-06-05 17:20:38,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:38,101 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:38,101 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:38,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-06-05 17:20:38,101 INFO L430 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:38,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:38,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1550652952, now seen corresponding path program 395 times [2021-06-05 17:20:38,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:38,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062286885] [2021-06-05 17:20:38,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:38,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:38,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:38,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062286885] [2021-06-05 17:20:38,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062286885] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:38,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:38,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:38,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24979376] [2021-06-05 17:20:38,280 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:38,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:38,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:38,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:38,281 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) [2021-06-05 17:20:39,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:39,653 INFO L93 Difference]: Finished difference Result 5770 states and 19204 transitions. [2021-06-05 17:20:39,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 17:20:39,654 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 [2021-06-05 17:20:39,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:39,662 INFO L225 Difference]: With dead ends: 5770 [2021-06-05 17:20:39,662 INFO L226 Difference]: Without dead ends: 5670 [2021-06-05 17:20:39,663 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 904.5ms TimeCoverageRelationStatistics Valid=288, Invalid=2904, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 17:20:39,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5670 states. [2021-06-05 17:20:39,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5670 to 5330. [2021-06-05 17:20:39,723 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) [2021-06-05 17:20:39,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18005 transitions. [2021-06-05 17:20:39,733 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18005 transitions. Word has length 39 [2021-06-05 17:20:39,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:39,733 INFO L482 AbstractCegarLoop]: Abstraction has 5330 states and 18005 transitions. [2021-06-05 17:20:39,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:39,733 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18005 transitions. [2021-06-05 17:20:39,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:39,739 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:39,739 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:39,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-06-05 17:20:39,739 INFO L430 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:39,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:39,739 INFO L82 PathProgramCache]: Analyzing trace with hash -2127095942, now seen corresponding path program 396 times [2021-06-05 17:20:39,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:39,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569241757] [2021-06-05 17:20:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:39,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:39,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569241757] [2021-06-05 17:20:39,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569241757] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:39,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:39,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:39,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885269316] [2021-06-05 17:20:39,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:39,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:39,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:39,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:39,919 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) [2021-06-05 17:20:41,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:41,380 INFO L93 Difference]: Finished difference Result 5722 states and 19087 transitions. [2021-06-05 17:20:41,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 17:20:41,380 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:41,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:41,388 INFO L225 Difference]: With dead ends: 5722 [2021-06-05 17:20:41,388 INFO L226 Difference]: Without dead ends: 5676 [2021-06-05 17:20:41,388 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 989.3ms TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 17:20:41,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5676 states. [2021-06-05 17:20:41,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5676 to 5328. [2021-06-05 17:20:41,448 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) [2021-06-05 17:20:41,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 18002 transitions. [2021-06-05 17:20:41,456 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 18002 transitions. Word has length 39 [2021-06-05 17:20:41,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:41,456 INFO L482 AbstractCegarLoop]: Abstraction has 5328 states and 18002 transitions. [2021-06-05 17:20:41,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:41,456 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 18002 transitions. [2021-06-05 17:20:41,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:41,462 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:41,462 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:41,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-06-05 17:20:41,462 INFO L430 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:41,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:41,462 INFO L82 PathProgramCache]: Analyzing trace with hash 732803864, now seen corresponding path program 397 times [2021-06-05 17:20:41,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:41,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226519300] [2021-06-05 17:20:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:41,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:41,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226519300] [2021-06-05 17:20:41,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226519300] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:41,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:41,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:41,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463358177] [2021-06-05 17:20:41,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:41,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:41,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:41,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:41,639 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) [2021-06-05 17:20:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:42,934 INFO L93 Difference]: Finished difference Result 5691 states and 19011 transitions. [2021-06-05 17:20:42,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 17:20:42,935 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:42,943 INFO L225 Difference]: With dead ends: 5691 [2021-06-05 17:20:42,943 INFO L226 Difference]: Without dead ends: 5630 [2021-06-05 17:20:42,944 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 830.9ms TimeCoverageRelationStatistics Valid=265, Invalid=2597, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 17:20:42,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5630 states. [2021-06-05 17:20:43,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5630 to 5319. [2021-06-05 17:20:43,004 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) [2021-06-05 17:20:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 17980 transitions. [2021-06-05 17:20:43,013 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 17980 transitions. Word has length 39 [2021-06-05 17:20:43,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:43,014 INFO L482 AbstractCegarLoop]: Abstraction has 5319 states and 17980 transitions. [2021-06-05 17:20:43,014 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:43,014 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 17980 transitions. [2021-06-05 17:20:43,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:43,020 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:43,020 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:43,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-06-05 17:20:43,020 INFO L430 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:43,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:43,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1009249178, now seen corresponding path program 398 times [2021-06-05 17:20:43,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:43,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127860178] [2021-06-05 17:20:43,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:43,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:43,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:43,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127860178] [2021-06-05 17:20:43,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127860178] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:43,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:43,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:43,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924511168] [2021-06-05 17:20:43,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:43,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:43,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:43,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:43,236 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) [2021-06-05 17:20:44,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:44,437 INFO L93 Difference]: Finished difference Result 5622 states and 18854 transitions. [2021-06-05 17:20:44,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 17:20:44,438 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:44,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:44,446 INFO L225 Difference]: With dead ends: 5622 [2021-06-05 17:20:44,446 INFO L226 Difference]: Without dead ends: 5579 [2021-06-05 17:20:44,446 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 806.5ms TimeCoverageRelationStatistics Valid=235, Invalid=2215, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 17:20:44,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5579 states. [2021-06-05 17:20:44,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5579 to 5315. [2021-06-05 17:20:44,508 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) [2021-06-05 17:20:44,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5315 states to 5315 states and 17970 transitions. [2021-06-05 17:20:44,517 INFO L78 Accepts]: Start accepts. Automaton has 5315 states and 17970 transitions. Word has length 39 [2021-06-05 17:20:44,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:44,517 INFO L482 AbstractCegarLoop]: Abstraction has 5315 states and 17970 transitions. [2021-06-05 17:20:44,517 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) [2021-06-05 17:20:44,517 INFO L276 IsEmpty]: Start isEmpty. Operand 5315 states and 17970 transitions. [2021-06-05 17:20:44,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:44,523 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:44,523 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:44,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-06-05 17:20:44,523 INFO L430 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:44,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:44,523 INFO L82 PathProgramCache]: Analyzing trace with hash -549899254, now seen corresponding path program 399 times [2021-06-05 17:20:44,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:44,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529045619] [2021-06-05 17:20:44,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:44,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:44,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529045619] [2021-06-05 17:20:44,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529045619] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:44,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:44,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:44,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763929171] [2021-06-05 17:20:44,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:44,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:44,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:44,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:44,703 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) [2021-06-05 17:20:45,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:45,939 INFO L93 Difference]: Finished difference Result 5624 states and 18861 transitions. [2021-06-05 17:20:45,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 17:20:45,939 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:45,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:45,947 INFO L225 Difference]: With dead ends: 5624 [2021-06-05 17:20:45,947 INFO L226 Difference]: Without dead ends: 5573 [2021-06-05 17:20:45,947 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 768.7ms TimeCoverageRelationStatistics Valid=239, Invalid=2311, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:20:45,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5573 states. [2021-06-05 17:20:45,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5573 to 5309. [2021-06-05 17:20:46,001 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) [2021-06-05 17:20:46,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 17955 transitions. [2021-06-05 17:20:46,009 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 17955 transitions. Word has length 39 [2021-06-05 17:20:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:46,009 INFO L482 AbstractCegarLoop]: Abstraction has 5309 states and 17955 transitions. [2021-06-05 17:20:46,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:46,009 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 17955 transitions. [2021-06-05 17:20:46,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:46,015 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:46,015 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:46,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-06-05 17:20:46,015 INFO L430 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:46,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:46,015 INFO L82 PathProgramCache]: Analyzing trace with hash -175566746, now seen corresponding path program 400 times [2021-06-05 17:20:46,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:46,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210937600] [2021-06-05 17:20:46,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:46,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:46,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210937600] [2021-06-05 17:20:46,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210937600] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:46,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:46,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:46,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386269672] [2021-06-05 17:20:46,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:46,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:46,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:46,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:46,193 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) [2021-06-05 17:20:49,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:49,442 INFO L93 Difference]: Finished difference Result 9865 states and 32666 transitions. [2021-06-05 17:20:49,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-06-05 17:20:49,443 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 [2021-06-05 17:20:49,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:49,457 INFO L225 Difference]: With dead ends: 9865 [2021-06-05 17:20:49,457 INFO L226 Difference]: Without dead ends: 9742 [2021-06-05 17:20:49,458 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3079 ImplicationChecksByTransitivity, 1975.9ms TimeCoverageRelationStatistics Valid=742, Invalid=8764, Unknown=0, NotChecked=0, Total=9506 [2021-06-05 17:20:49,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9742 states. [2021-06-05 17:20:49,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9742 to 5434. [2021-06-05 17:20:49,540 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) [2021-06-05 17:20:49,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5434 states to 5434 states and 18373 transitions. [2021-06-05 17:20:49,549 INFO L78 Accepts]: Start accepts. Automaton has 5434 states and 18373 transitions. Word has length 39 [2021-06-05 17:20:49,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:49,549 INFO L482 AbstractCegarLoop]: Abstraction has 5434 states and 18373 transitions. [2021-06-05 17:20:49,549 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) [2021-06-05 17:20:49,549 INFO L276 IsEmpty]: Start isEmpty. Operand 5434 states and 18373 transitions. [2021-06-05 17:20:49,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:49,555 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:49,555 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:49,555 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-06-05 17:20:49,555 INFO L430 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:49,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:49,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1933551160, now seen corresponding path program 401 times [2021-06-05 17:20:49,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:49,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605563160] [2021-06-05 17:20:49,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:49,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:49,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605563160] [2021-06-05 17:20:49,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605563160] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:49,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:49,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:49,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159635050] [2021-06-05 17:20:49,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:49,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:49,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:49,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:49,734 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) [2021-06-05 17:20:52,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:52,948 INFO L93 Difference]: Finished difference Result 9720 states and 32238 transitions. [2021-06-05 17:20:52,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-06-05 17:20:52,948 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 [2021-06-05 17:20:52,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:52,962 INFO L225 Difference]: With dead ends: 9720 [2021-06-05 17:20:52,962 INFO L226 Difference]: Without dead ends: 9525 [2021-06-05 17:20:52,963 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2920 ImplicationChecksByTransitivity, 1885.6ms TimeCoverageRelationStatistics Valid=705, Invalid=8415, Unknown=0, NotChecked=0, Total=9120 [2021-06-05 17:20:52,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9525 states. [2021-06-05 17:20:53,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9525 to 5493. [2021-06-05 17:20:53,043 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) [2021-06-05 17:20:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 18573 transitions. [2021-06-05 17:20:53,051 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 18573 transitions. Word has length 39 [2021-06-05 17:20:53,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:53,051 INFO L482 AbstractCegarLoop]: Abstraction has 5493 states and 18573 transitions. [2021-06-05 17:20:53,051 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:53,051 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 18573 transitions. [2021-06-05 17:20:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:53,057 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:53,057 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:53,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-06-05 17:20:53,057 INFO L430 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:53,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:53,057 INFO L82 PathProgramCache]: Analyzing trace with hash -602608834, now seen corresponding path program 402 times [2021-06-05 17:20:53,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:53,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535120433] [2021-06-05 17:20:53,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:53,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:53,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535120433] [2021-06-05 17:20:53,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535120433] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:53,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:53,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:53,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594000021] [2021-06-05 17:20:53,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:53,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:53,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:53,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:53,236 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) [2021-06-05 17:20:55,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:55,102 INFO L93 Difference]: Finished difference Result 7872 states and 26181 transitions. [2021-06-05 17:20:55,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 17:20:55,102 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:55,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:55,113 INFO L225 Difference]: With dead ends: 7872 [2021-06-05 17:20:55,114 INFO L226 Difference]: Without dead ends: 7754 [2021-06-05 17:20:55,114 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 1124.5ms TimeCoverageRelationStatistics Valid=407, Invalid=4285, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 17:20:55,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7754 states. [2021-06-05 17:20:55,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7754 to 5504. [2021-06-05 17:20:55,189 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) [2021-06-05 17:20:55,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5504 states to 5504 states and 18609 transitions. [2021-06-05 17:20:55,198 INFO L78 Accepts]: Start accepts. Automaton has 5504 states and 18609 transitions. Word has length 39 [2021-06-05 17:20:55,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:55,198 INFO L482 AbstractCegarLoop]: Abstraction has 5504 states and 18609 transitions. [2021-06-05 17:20:55,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:20:55,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5504 states and 18609 transitions. [2021-06-05 17:20:55,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:55,204 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:55,204 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:55,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-06-05 17:20:55,204 INFO L430 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:55,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:55,204 INFO L82 PathProgramCache]: Analyzing trace with hash 570043388, now seen corresponding path program 403 times [2021-06-05 17:20:55,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:55,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038522314] [2021-06-05 17:20:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:55,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:55,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:55,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038522314] [2021-06-05 17:20:55,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038522314] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:55,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:55,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:55,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104070876] [2021-06-05 17:20:55,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:55,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:55,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:55,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:55,383 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) [2021-06-05 17:20:57,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:57,634 INFO L93 Difference]: Finished difference Result 8538 states and 28553 transitions. [2021-06-05 17:20:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 17:20:57,634 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:20:57,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:57,646 INFO L225 Difference]: With dead ends: 8538 [2021-06-05 17:20:57,647 INFO L226 Difference]: Without dead ends: 8478 [2021-06-05 17:20:57,647 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1653 ImplicationChecksByTransitivity, 1346.1ms TimeCoverageRelationStatistics Valid=469, Invalid=5231, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 17:20:57,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8478 states. [2021-06-05 17:20:57,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8478 to 5502. [2021-06-05 17:20:57,723 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) [2021-06-05 17:20:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 18604 transitions. [2021-06-05 17:20:57,732 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 18604 transitions. Word has length 39 [2021-06-05 17:20:57,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:57,732 INFO L482 AbstractCegarLoop]: Abstraction has 5502 states and 18604 transitions. [2021-06-05 17:20:57,732 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) [2021-06-05 17:20:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 18604 transitions. [2021-06-05 17:20:57,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:57,738 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:57,738 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:57,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-06-05 17:20:57,738 INFO L430 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:57,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:57,738 INFO L82 PathProgramCache]: Analyzing trace with hash -406882806, now seen corresponding path program 404 times [2021-06-05 17:20:57,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:57,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694423109] [2021-06-05 17:20:57,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:57,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:57,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694423109] [2021-06-05 17:20:57,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694423109] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:57,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:57,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:57,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106279553] [2021-06-05 17:20:57,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:57,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:57,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:57,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:57,915 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) [2021-06-05 17:20:59,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:20:59,573 INFO L93 Difference]: Finished difference Result 7666 states and 25683 transitions. [2021-06-05 17:20:59,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 17:20:59,573 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 [2021-06-05 17:20:59,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:20:59,584 INFO L225 Difference]: With dead ends: 7666 [2021-06-05 17:20:59,584 INFO L226 Difference]: Without dead ends: 7575 [2021-06-05 17:20:59,584 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 940.3ms TimeCoverageRelationStatistics Valid=309, Invalid=3231, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 17:20:59,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7575 states. [2021-06-05 17:20:59,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7575 to 5502. [2021-06-05 17:20:59,656 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) [2021-06-05 17:20:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 18598 transitions. [2021-06-05 17:20:59,665 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 18598 transitions. Word has length 39 [2021-06-05 17:20:59,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:20:59,665 INFO L482 AbstractCegarLoop]: Abstraction has 5502 states and 18598 transitions. [2021-06-05 17:20:59,665 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) [2021-06-05 17:20:59,665 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 18598 transitions. [2021-06-05 17:20:59,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:20:59,671 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:20:59,671 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:20:59,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-06-05 17:20:59,671 INFO L430 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:20:59,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:20:59,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1909365012, now seen corresponding path program 405 times [2021-06-05 17:20:59,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:20:59,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5880017] [2021-06-05 17:20:59,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:20:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:20:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:20:59,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:20:59,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5880017] [2021-06-05 17:20:59,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5880017] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:20:59,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:20:59,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:20:59,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288504619] [2021-06-05 17:20:59,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:20:59,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:20:59,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:20:59,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:20:59,848 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) [2021-06-05 17:21:02,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:21:02,041 INFO L93 Difference]: Finished difference Result 8536 states and 28660 transitions. [2021-06-05 17:21:02,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 17:21:02,042 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:21:02,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:21:02,054 INFO L225 Difference]: With dead ends: 8536 [2021-06-05 17:21:02,054 INFO L226 Difference]: Without dead ends: 8436 [2021-06-05 17:21:02,054 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 1242.1ms TimeCoverageRelationStatistics Valid=423, Invalid=4689, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 17:21:02,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8436 states. [2021-06-05 17:21:02,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8436 to 5493. [2021-06-05 17:21:02,127 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) [2021-06-05 17:21:02,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5493 states to 5493 states and 18570 transitions. [2021-06-05 17:21:02,135 INFO L78 Accepts]: Start accepts. Automaton has 5493 states and 18570 transitions. Word has length 39 [2021-06-05 17:21:02,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:21:02,135 INFO L482 AbstractCegarLoop]: Abstraction has 5493 states and 18570 transitions. [2021-06-05 17:21:02,135 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) [2021-06-05 17:21:02,135 INFO L276 IsEmpty]: Start isEmpty. Operand 5493 states and 18570 transitions. [2021-06-05 17:21:02,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:21:02,141 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:21:02,141 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:21:02,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-06-05 17:21:02,141 INFO L430 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:21:02,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:21:02,141 INFO L82 PathProgramCache]: Analyzing trace with hash -734494272, now seen corresponding path program 406 times [2021-06-05 17:21:02,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:21:02,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419867823] [2021-06-05 17:21:02,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:21:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:21:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:21:02,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:21:02,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419867823] [2021-06-05 17:21:02,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419867823] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:21:02,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:21:02,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:21:02,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866533484] [2021-06-05 17:21:02,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:21:02,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:21:02,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:21:02,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:21:02,318 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) [2021-06-05 17:21:03,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:21:03,691 INFO L93 Difference]: Finished difference Result 5889 states and 19625 transitions. [2021-06-05 17:21:03,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 17:21:03,692 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:21:03,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:21:03,700 INFO L225 Difference]: With dead ends: 5889 [2021-06-05 17:21:03,700 INFO L226 Difference]: Without dead ends: 5834 [2021-06-05 17:21:03,701 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 913.3ms TimeCoverageRelationStatistics Valid=279, Invalid=2691, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 17:21:03,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2021-06-05 17:21:03,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5511. [2021-06-05 17:21:03,759 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) [2021-06-05 17:21:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5511 states to 5511 states and 18615 transitions. [2021-06-05 17:21:03,768 INFO L78 Accepts]: Start accepts. Automaton has 5511 states and 18615 transitions. Word has length 39 [2021-06-05 17:21:03,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:21:03,768 INFO L482 AbstractCegarLoop]: Abstraction has 5511 states and 18615 transitions. [2021-06-05 17:21:03,768 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:21:03,768 INFO L276 IsEmpty]: Start isEmpty. Operand 5511 states and 18615 transitions. [2021-06-05 17:21:03,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:21:03,774 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:21:03,774 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:21:03,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-06-05 17:21:03,774 INFO L430 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:21:03,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:21:03,774 INFO L82 PathProgramCache]: Analyzing trace with hash 438157950, now seen corresponding path program 407 times [2021-06-05 17:21:03,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:21:03,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846737069] [2021-06-05 17:21:03,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:21:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:21:03,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:21:03,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:21:03,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846737069] [2021-06-05 17:21:03,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846737069] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:21:03,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:21:03,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:21:03,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998011233] [2021-06-05 17:21:03,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:21:03,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:21:03,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:21:03,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:21:03,985 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) [2021-06-05 17:21:05,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:21:05,338 INFO L93 Difference]: Finished difference Result 5859 states and 19550 transitions. [2021-06-05 17:21:05,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 17:21:05,339 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 17:21:05,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:21:05,348 INFO L225 Difference]: With dead ends: 5859 [2021-06-05 17:21:05,348 INFO L226 Difference]: Without dead ends: 5799 [2021-06-05 17:21:05,349 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 965.2ms TimeCoverageRelationStatistics Valid=270, Invalid=2486, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 17:21:05,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2021-06-05 17:21:05,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 5509. [2021-06-05 17:21:05,412 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) [2021-06-05 17:21:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5509 states to 5509 states and 18609 transitions. [2021-06-05 17:21:05,421 INFO L78 Accepts]: Start accepts. Automaton has 5509 states and 18609 transitions. Word has length 39 [2021-06-05 17:21:05,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:21:05,421 INFO L482 AbstractCegarLoop]: Abstraction has 5509 states and 18609 transitions. [2021-06-05 17:21:05,421 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) [2021-06-05 17:21:05,421 INFO L276 IsEmpty]: Start isEmpty. Operand 5509 states and 18609 transitions. [2021-06-05 17:21:05,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:21:05,428 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:21:05,428 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:21:05,428 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-06-05 17:21:05,428 INFO L430 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:21:05,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:21:05,428 INFO L82 PathProgramCache]: Analyzing trace with hash 370413070, now seen corresponding path program 408 times [2021-06-05 17:21:05,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:21:05,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52155581] [2021-06-05 17:21:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:21:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 17:21:05,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 17:21:05,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 17:21:05,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52155581] [2021-06-05 17:21:05,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52155581] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 17:21:05,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 17:21:05,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-05 17:21:05,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885046439] [2021-06-05 17:21:05,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 17:21:05,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 17:21:05,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 17:21:05,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-05 17:21:05,608 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) [2021-06-05 17:21:06,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 17:21:06,876 INFO L93 Difference]: Finished difference Result 5814 states and 19441 transitions. [2021-06-05 17:21:06,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 17:21:06,876 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 [2021-06-05 17:21:06,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 17:21:06,884 INFO L225 Difference]: With dead ends: 5814 [2021-06-05 17:21:06,884 INFO L226 Difference]: Without dead ends: 5771 [2021-06-05 17:21:06,885 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 847.0ms TimeCoverageRelationStatistics Valid=241, Invalid=2309, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 17:21:06,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5771 states. [2021-06-05 17:21:06,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5771 to 5515. [2021-06-05 17:21:06,942 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) [2021-06-05 17:21:06,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5515 states to 5515 states and 18622 transitions. [2021-06-05 17:21:06,951 INFO L78 Accepts]: Start accepts. Automaton has 5515 states and 18622 transitions. Word has length 39 [2021-06-05 17:21:06,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 17:21:06,951 INFO L482 AbstractCegarLoop]: Abstraction has 5515 states and 18622 transitions. [2021-06-05 17:21:06,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 17:21:06,951 INFO L276 IsEmpty]: Start isEmpty. Operand 5515 states and 18622 transitions. [2021-06-05 17:21:06,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 17:21:06,957 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 17:21:06,957 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 17:21:06,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-06-05 17:21:06,957 INFO L430 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 17:21:06,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 17:21:06,957 INFO L82 PathProgramCache]: Analyzing trace with hash 2120520206, now seen corresponding path program 409 times [2021-06-05 17:21:06,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 17:21:06,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351033756] [2021-06-05 17:21:06,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 17:21:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2021-06-05 17:21:07,134 WARN L222 SmtUtils]: Removed 2 from assertion stack [2021-06-05 17:21:07,134 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-06-05 17:21:07,134 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 17:21:07,135 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 17:21:07,136 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 17:21:07,137 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 05:21:07 BasicIcfg [2021-06-05 17:21:07,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 17:21:07,137 INFO L168 Benchmark]: Toolchain (without parser) took 710448.44 ms. Allocated memory was 352.3 MB in the beginning and 1.3 GB in the end (delta: 922.7 MB). Free memory was 331.9 MB in the beginning and 965.8 MB in the end (delta: -633.9 MB). Peak memory consumption was 289.8 MB. Max. memory is 16.0 GB. [2021-06-05 17:21:07,137 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 352.3 MB. Free memory was 333.0 MB in the beginning and 333.0 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 17:21:07,137 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.40 ms. Allocated memory is still 352.3 MB. Free memory was 331.8 MB in the beginning and 330.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 17:21:07,137 INFO L168 Benchmark]: Boogie Preprocessor took 13.54 ms. Allocated memory is still 352.3 MB. Free memory was 330.3 MB in the beginning and 329.4 MB in the end (delta: 923.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 17:21:07,137 INFO L168 Benchmark]: RCFGBuilder took 245.76 ms. Allocated memory is still 352.3 MB. Free memory was 329.3 MB in the beginning and 316.6 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-05 17:21:07,137 INFO L168 Benchmark]: TraceAbstraction took 710156.90 ms. Allocated memory was 352.3 MB in the beginning and 1.3 GB in the end (delta: 922.7 MB). Free memory was 316.2 MB in the beginning and 965.8 MB in the end (delta: -649.7 MB). Peak memory consumption was 273.1 MB. Max. memory is 16.0 GB. [2021-06-05 17:21:07,138 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 352.3 MB. Free memory was 333.0 MB in the beginning and 333.0 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.40 ms. Allocated memory is still 352.3 MB. Free memory was 331.8 MB in the beginning and 330.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.54 ms. Allocated memory is still 352.3 MB. Free memory was 330.3 MB in the beginning and 329.4 MB in the end (delta: 923.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 245.76 ms. Allocated memory is still 352.3 MB. Free memory was 329.3 MB in the beginning and 316.6 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 710156.90 ms. Allocated memory was 352.3 MB in the beginning and 1.3 GB in the end (delta: 922.7 MB). Free memory was 316.2 MB in the beginning and 965.8 MB in the end (delta: -649.7 MB). Peak memory consumption was 273.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 40 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 6ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 40 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 6ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 40 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 6ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 40 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 6ms.. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 40 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 11 for 6ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 82 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 710034.2ms, OverallIterations: 409, TraceHistogramMax: 1, EmptinessCheckTime: 2025.0ms, AutomataDifference: 604711.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 392.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 63642 SDtfs, 121227 SDslu, 612254 SDs, 0 SdLazy, 684727 SolverSat, 22747 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 218349.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23511 GetRequests, 548 SyntacticMatches, 845 SemanticMatches, 22118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330388 ImplicationChecksByTransitivity, 379844.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5515occurred in iteration=408, InterpolantAutomatonStates: 19760, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25275.9ms AutomataMinimizationTime, 408 MinimizatonAttempts, 362167 StatesRemovedByMinimization, 406 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 198.5ms SsaConstructionTime, 622.7ms SatisfiabilityAnalysisTime, 75333.0ms InterpolantComputationTime, 15912 NumberOfCodeBlocks, 15912 NumberOfCodeBlocksAsserted, 408 NumberOfCheckSat, 15504 ConstructedInterpolants, 0 QuantifiedInterpolants, 202374 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 408 InterpolantComputations, 408 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