/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/locks/test_locks_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 00:39:45,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 00:39:45,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 00:39:45,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 00:39:45,880 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-15 00:39:45,891 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 00:39:45,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 00:39:45,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 00:39:45,893 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 00:39:45,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 00:39:45,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 00:39:45,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 00:39:45,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 00:39:45,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 00:39:45,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 00:39:45,894 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 00:39:45,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 00:39:45,894 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 00:39:45,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 00:39:45,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 00:39:45,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 00:39:45,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 00:39:45,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 00:39:45,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 00:39:45,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 00:39:45,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 00:39:45,896 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-15 00:39:45,896 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 00:39:46,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 00:39:46,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 00:39:46,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 00:39:46,115 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 00:39:46,115 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 00:39:46,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_15-2.c [2022-02-15 00:39:46,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d07570ea/f0c0ddfc6b814f048cfd2f5ed06acd86/FLAG7f4ffaecf [2022-02-15 00:39:46,512 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 00:39:46,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-2.c [2022-02-15 00:39:46,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d07570ea/f0c0ddfc6b814f048cfd2f5ed06acd86/FLAG7f4ffaecf [2022-02-15 00:39:46,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d07570ea/f0c0ddfc6b814f048cfd2f5ed06acd86 [2022-02-15 00:39:46,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 00:39:46,944 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-15 00:39:46,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 00:39:46,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 00:39:46,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 00:39:46,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:39:46" (1/1) ... [2022-02-15 00:39:46,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b33f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:39:46, skipping insertion in model container [2022-02-15 00:39:46,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:39:46" (1/1) ... [2022-02-15 00:39:46,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 00:39:46,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 00:39:47,096 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-2.c[5628,5641] [2022-02-15 00:39:47,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 00:39:47,104 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 00:39:47,121 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-2.c[5628,5641] [2022-02-15 00:39:47,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 00:39:47,131 INFO L208 MainTranslator]: Completed translation [2022-02-15 00:39:47,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:39:47 WrapperNode [2022-02-15 00:39:47,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 00:39:47,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 00:39:47,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 00:39:47,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 00:39:47,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:39:47" (1/1) ... [2022-02-15 00:39:47,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:39:47" (1/1) ... [2022-02-15 00:39:47,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:39:47" (1/1) ... [2022-02-15 00:39:47,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:39:47" (1/1) ... [2022-02-15 00:39:47,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:39:47" (1/1) ... [2022-02-15 00:39:47,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:39:47" (1/1) ... [2022-02-15 00:39:47,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:39:47" (1/1) ... [2022-02-15 00:39:47,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 00:39:47,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 00:39:47,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 00:39:47,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 00:39:47,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:39:47" (1/1) ... [2022-02-15 00:39:47,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 00:39:47,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 00:39:47,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-15 00:39:47,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-15 00:39:47,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 00:39:47,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 00:39:47,215 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 00:39:47,215 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 00:39:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 00:39:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 00:39:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 00:39:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 00:39:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 00:39:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 00:39:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 00:39:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 00:39:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 00:39:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 00:39:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 00:39:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 00:39:47,276 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 00:39:47,277 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 00:39:47,476 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 00:39:47,481 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 00:39:47,481 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 00:39:47,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:39:47 BoogieIcfgContainer [2022-02-15 00:39:47,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 00:39:47,484 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-15 00:39:47,484 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-15 00:39:47,485 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-15 00:39:47,487 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:39:47" (1/1) ... [2022-02-15 00:39:47,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.02 12:39:47 BasicIcfg [2022-02-15 00:39:47,524 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-15 00:39:47,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 00:39:47,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 00:39:47,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 00:39:47,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:39:46" (1/4) ... [2022-02-15 00:39:47,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6868a817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:39:47, skipping insertion in model container [2022-02-15 00:39:47,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:39:47" (2/4) ... [2022-02-15 00:39:47,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6868a817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:39:47, skipping insertion in model container [2022-02-15 00:39:47,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:39:47" (3/4) ... [2022-02-15 00:39:47,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6868a817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:39:47, skipping insertion in model container [2022-02-15 00:39:47,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.02 12:39:47" (4/4) ... [2022-02-15 00:39:47,530 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-2.cJordan [2022-02-15 00:39:47,546 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-15 00:39:47,546 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 00:39:47,595 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 00:39:47,601 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-15 00:39:47,602 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 00:39:47,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 54 states have (on average 1.9074074074074074) internal successors, (103), 55 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 00:39:47,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-15 00:39:47,635 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:47,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:47,636 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:47,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:47,640 INFO L85 PathProgramCache]: Analyzing trace with hash 539653987, now seen corresponding path program 1 times [2022-02-15 00:39:47,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:47,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092029080] [2022-02-15 00:39:47,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:47,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:47,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:47,916 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:47,916 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092029080] [2022-02-15 00:39:47,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092029080] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:47,916 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:47,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:47,918 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974863446] [2022-02-15 00:39:47,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:47,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:47,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:47,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:47,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:47,972 INFO L87 Difference]: Start difference. First operand has 60 states, 54 states have (on average 1.9074074074074074) internal successors, (103), 55 states have internal predecessors, (103), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:48,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:48,187 INFO L93 Difference]: Finished difference Result 111 states and 198 transitions. [2022-02-15 00:39:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:48,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-02-15 00:39:48,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:48,198 INFO L225 Difference]: With dead ends: 111 [2022-02-15 00:39:48,198 INFO L226 Difference]: Without dead ends: 103 [2022-02-15 00:39:48,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:48,202 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 259 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:48,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 119 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:48,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-02-15 00:39:48,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2022-02-15 00:39:48,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.8955223880597014) internal successors, (127), 67 states have internal predecessors, (127), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:48,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 130 transitions. [2022-02-15 00:39:48,233 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 130 transitions. Word has length 26 [2022-02-15 00:39:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:48,233 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 130 transitions. [2022-02-15 00:39:48,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 130 transitions. [2022-02-15 00:39:48,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-15 00:39:48,234 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:48,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:48,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 00:39:48,235 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:48,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:48,235 INFO L85 PathProgramCache]: Analyzing trace with hash -457418366, now seen corresponding path program 1 times [2022-02-15 00:39:48,236 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:48,236 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429268937] [2022-02-15 00:39:48,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:48,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:48,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:48,283 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:48,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429268937] [2022-02-15 00:39:48,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429268937] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:48,283 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:48,283 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:48,283 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295960693] [2022-02-15 00:39:48,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:48,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:48,284 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:48,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:48,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:48,285 INFO L87 Difference]: Start difference. First operand 71 states and 130 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:48,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:48,399 INFO L93 Difference]: Finished difference Result 103 states and 187 transitions. [2022-02-15 00:39:48,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:48,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-02-15 00:39:48,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:48,401 INFO L225 Difference]: With dead ends: 103 [2022-02-15 00:39:48,401 INFO L226 Difference]: Without dead ends: 103 [2022-02-15 00:39:48,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:48,402 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 223 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:48,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 135 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:48,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-02-15 00:39:48,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2022-02-15 00:39:48,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 97 states have (on average 1.8865979381443299) internal successors, (183), 97 states have internal predecessors, (183), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:48,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 186 transitions. [2022-02-15 00:39:48,409 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 186 transitions. Word has length 26 [2022-02-15 00:39:48,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:48,409 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 186 transitions. [2022-02-15 00:39:48,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:48,410 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 186 transitions. [2022-02-15 00:39:48,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 00:39:48,410 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:48,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:48,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 00:39:48,411 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:48,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:48,411 INFO L85 PathProgramCache]: Analyzing trace with hash -450563475, now seen corresponding path program 1 times [2022-02-15 00:39:48,411 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:48,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742216595] [2022-02-15 00:39:48,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:48,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:48,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:48,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:48,454 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:48,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742216595] [2022-02-15 00:39:48,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742216595] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:48,454 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:48,454 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:48,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483659401] [2022-02-15 00:39:48,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:48,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:48,455 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:48,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:48,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:48,455 INFO L87 Difference]: Start difference. First operand 101 states and 186 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:48,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:48,559 INFO L93 Difference]: Finished difference Result 106 states and 189 transitions. [2022-02-15 00:39:48,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:48,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-02-15 00:39:48,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:48,561 INFO L225 Difference]: With dead ends: 106 [2022-02-15 00:39:48,561 INFO L226 Difference]: Without dead ends: 106 [2022-02-15 00:39:48,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:48,562 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 196 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:48,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 163 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:48,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-02-15 00:39:48,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2022-02-15 00:39:48,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 100 states have (on average 1.85) internal successors, (185), 100 states have internal predecessors, (185), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 188 transitions. [2022-02-15 00:39:48,568 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 188 transitions. Word has length 27 [2022-02-15 00:39:48,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:48,568 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 188 transitions. [2022-02-15 00:39:48,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:48,569 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 188 transitions. [2022-02-15 00:39:48,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 00:39:48,569 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:48,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:48,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 00:39:48,569 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:48,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:48,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1295035346, now seen corresponding path program 1 times [2022-02-15 00:39:48,570 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:48,570 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320342565] [2022-02-15 00:39:48,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:48,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:48,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:48,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:48,605 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:48,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320342565] [2022-02-15 00:39:48,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320342565] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:48,605 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:48,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:48,605 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972158967] [2022-02-15 00:39:48,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:48,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:48,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:48,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:48,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:48,606 INFO L87 Difference]: Start difference. First operand 104 states and 188 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:48,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:48,686 INFO L93 Difference]: Finished difference Result 197 states and 358 transitions. [2022-02-15 00:39:48,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:48,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-02-15 00:39:48,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:48,688 INFO L225 Difference]: With dead ends: 197 [2022-02-15 00:39:48,688 INFO L226 Difference]: Without dead ends: 197 [2022-02-15 00:39:48,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:48,689 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 248 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:48,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 109 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:48,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-02-15 00:39:48,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 195. [2022-02-15 00:39:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 191 states have (on average 1.8534031413612566) internal successors, (354), 191 states have internal predecessors, (354), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 357 transitions. [2022-02-15 00:39:48,697 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 357 transitions. Word has length 27 [2022-02-15 00:39:48,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:48,697 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 357 transitions. [2022-02-15 00:39:48,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:48,697 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 357 transitions. [2022-02-15 00:39:48,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-02-15 00:39:48,698 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:48,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:48,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 00:39:48,699 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:48,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:48,699 INFO L85 PathProgramCache]: Analyzing trace with hash -297962993, now seen corresponding path program 1 times [2022-02-15 00:39:48,699 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:48,699 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763194298] [2022-02-15 00:39:48,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:48,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:48,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:48,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:48,733 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:48,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763194298] [2022-02-15 00:39:48,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763194298] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:48,733 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:48,733 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:48,733 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635749322] [2022-02-15 00:39:48,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:48,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:48,734 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:48,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:48,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:48,734 INFO L87 Difference]: Start difference. First operand 195 states and 357 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:48,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:48,811 INFO L93 Difference]: Finished difference Result 253 states and 464 transitions. [2022-02-15 00:39:48,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:48,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2022-02-15 00:39:48,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:48,812 INFO L225 Difference]: With dead ends: 253 [2022-02-15 00:39:48,812 INFO L226 Difference]: Without dead ends: 253 [2022-02-15 00:39:48,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:48,813 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 161 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:48,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 188 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:48,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-02-15 00:39:48,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 195. [2022-02-15 00:39:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 191 states have (on average 1.8429319371727748) internal successors, (352), 191 states have internal predecessors, (352), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:48,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 355 transitions. [2022-02-15 00:39:48,820 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 355 transitions. Word has length 27 [2022-02-15 00:39:48,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:48,820 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 355 transitions. [2022-02-15 00:39:48,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:48,820 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 355 transitions. [2022-02-15 00:39:48,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-15 00:39:48,821 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:48,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:48,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 00:39:48,821 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:48,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1491357826, now seen corresponding path program 1 times [2022-02-15 00:39:48,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:48,841 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726860355] [2022-02-15 00:39:48,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:48,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:48,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:48,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:48,906 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:48,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726860355] [2022-02-15 00:39:48,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726860355] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:48,906 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:48,906 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:48,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095357476] [2022-02-15 00:39:48,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:48,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:48,907 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:48,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:48,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:48,907 INFO L87 Difference]: Start difference. First operand 195 states and 355 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:49,004 INFO L93 Difference]: Finished difference Result 369 states and 678 transitions. [2022-02-15 00:39:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:49,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-02-15 00:39:49,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:49,006 INFO L225 Difference]: With dead ends: 369 [2022-02-15 00:39:49,006 INFO L226 Difference]: Without dead ends: 369 [2022-02-15 00:39:49,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:49,007 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 239 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:49,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 106 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:49,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-02-15 00:39:49,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 263. [2022-02-15 00:39:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 259 states have (on average 1.83011583011583) internal successors, (474), 259 states have internal predecessors, (474), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 477 transitions. [2022-02-15 00:39:49,014 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 477 transitions. Word has length 28 [2022-02-15 00:39:49,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:49,014 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 477 transitions. [2022-02-15 00:39:49,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,014 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 477 transitions. [2022-02-15 00:39:49,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-15 00:39:49,015 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:49,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:49,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 00:39:49,016 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:49,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:49,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1806537117, now seen corresponding path program 1 times [2022-02-15 00:39:49,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:49,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198227967] [2022-02-15 00:39:49,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:49,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:49,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:49,049 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:49,049 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198227967] [2022-02-15 00:39:49,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198227967] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:49,049 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:49,049 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:49,049 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928892187] [2022-02-15 00:39:49,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:49,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:49,050 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:49,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:49,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:49,051 INFO L87 Difference]: Start difference. First operand 263 states and 477 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:49,126 INFO L93 Difference]: Finished difference Result 377 states and 680 transitions. [2022-02-15 00:39:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:49,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-02-15 00:39:49,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:49,128 INFO L225 Difference]: With dead ends: 377 [2022-02-15 00:39:49,128 INFO L226 Difference]: Without dead ends: 377 [2022-02-15 00:39:49,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:49,129 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 211 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:49,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 139 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:49,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-02-15 00:39:49,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 375. [2022-02-15 00:39:49,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 371 states have (on average 1.8221024258760108) internal successors, (676), 371 states have internal predecessors, (676), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 679 transitions. [2022-02-15 00:39:49,136 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 679 transitions. Word has length 28 [2022-02-15 00:39:49,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:49,136 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 679 transitions. [2022-02-15 00:39:49,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,137 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 679 transitions. [2022-02-15 00:39:49,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 00:39:49,137 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:49,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:49,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 00:39:49,138 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:49,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:49,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1012580010, now seen corresponding path program 1 times [2022-02-15 00:39:49,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:49,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032038891] [2022-02-15 00:39:49,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:49,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:49,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:49,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:49,177 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:49,177 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032038891] [2022-02-15 00:39:49,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032038891] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:49,177 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:49,177 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:49,177 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361574412] [2022-02-15 00:39:49,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:49,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:49,178 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:49,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:49,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:49,178 INFO L87 Difference]: Start difference. First operand 375 states and 679 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:49,256 INFO L93 Difference]: Finished difference Result 383 states and 684 transitions. [2022-02-15 00:39:49,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:49,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-02-15 00:39:49,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:49,259 INFO L225 Difference]: With dead ends: 383 [2022-02-15 00:39:49,259 INFO L226 Difference]: Without dead ends: 383 [2022-02-15 00:39:49,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:49,260 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 194 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:49,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 157 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:49,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-02-15 00:39:49,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 381. [2022-02-15 00:39:49,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 377 states have (on average 1.8037135278514589) internal successors, (680), 377 states have internal predecessors, (680), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 683 transitions. [2022-02-15 00:39:49,266 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 683 transitions. Word has length 29 [2022-02-15 00:39:49,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:49,267 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 683 transitions. [2022-02-15 00:39:49,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,267 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 683 transitions. [2022-02-15 00:39:49,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 00:39:49,267 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:49,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:49,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 00:39:49,268 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:49,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:49,268 INFO L85 PathProgramCache]: Analyzing trace with hash 168108139, now seen corresponding path program 1 times [2022-02-15 00:39:49,268 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:49,268 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775317981] [2022-02-15 00:39:49,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:49,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:49,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:49,313 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:49,313 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775317981] [2022-02-15 00:39:49,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775317981] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:49,313 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:49,313 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:49,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10020286] [2022-02-15 00:39:49,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:49,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:49,314 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:49,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:49,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:49,314 INFO L87 Difference]: Start difference. First operand 381 states and 683 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:49,378 INFO L93 Difference]: Finished difference Result 715 states and 1292 transitions. [2022-02-15 00:39:49,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:49,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-02-15 00:39:49,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:49,381 INFO L225 Difference]: With dead ends: 715 [2022-02-15 00:39:49,381 INFO L226 Difference]: Without dead ends: 715 [2022-02-15 00:39:49,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:49,383 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 232 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:49,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 105 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:49,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-02-15 00:39:49,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 521. [2022-02-15 00:39:49,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 517 states have (on average 1.7794970986460348) internal successors, (920), 517 states have internal predecessors, (920), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 923 transitions. [2022-02-15 00:39:49,392 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 923 transitions. Word has length 29 [2022-02-15 00:39:49,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:49,394 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 923 transitions. [2022-02-15 00:39:49,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,394 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 923 transitions. [2022-02-15 00:39:49,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-15 00:39:49,396 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:49,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:49,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 00:39:49,396 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:49,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:49,397 INFO L85 PathProgramCache]: Analyzing trace with hash -828964214, now seen corresponding path program 1 times [2022-02-15 00:39:49,397 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:49,397 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544222040] [2022-02-15 00:39:49,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:49,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:49,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:49,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:49,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544222040] [2022-02-15 00:39:49,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544222040] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:49,462 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:49,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:49,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644559015] [2022-02-15 00:39:49,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:49,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:49,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:49,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:49,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:49,463 INFO L87 Difference]: Start difference. First operand 521 states and 923 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:49,530 INFO L93 Difference]: Finished difference Result 739 states and 1304 transitions. [2022-02-15 00:39:49,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:49,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-02-15 00:39:49,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:49,533 INFO L225 Difference]: With dead ends: 739 [2022-02-15 00:39:49,533 INFO L226 Difference]: Without dead ends: 739 [2022-02-15 00:39:49,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:49,533 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 205 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:49,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 141 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:49,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-02-15 00:39:49,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 737. [2022-02-15 00:39:49,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 733 states have (on average 1.7735334242837653) internal successors, (1300), 733 states have internal predecessors, (1300), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1303 transitions. [2022-02-15 00:39:49,544 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1303 transitions. Word has length 29 [2022-02-15 00:39:49,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:49,544 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 1303 transitions. [2022-02-15 00:39:49,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,545 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1303 transitions. [2022-02-15 00:39:49,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 00:39:49,545 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:49,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:49,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 00:39:49,545 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:49,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:49,546 INFO L85 PathProgramCache]: Analyzing trace with hash 916417497, now seen corresponding path program 1 times [2022-02-15 00:39:49,546 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:49,546 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960084511] [2022-02-15 00:39:49,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:49,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:49,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:49,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:49,584 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:49,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960084511] [2022-02-15 00:39:49,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960084511] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:49,584 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:49,584 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:49,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543071135] [2022-02-15 00:39:49,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:49,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:49,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:49,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:49,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:49,585 INFO L87 Difference]: Start difference. First operand 737 states and 1303 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:49,662 INFO L93 Difference]: Finished difference Result 747 states and 1304 transitions. [2022-02-15 00:39:49,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:49,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-02-15 00:39:49,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:49,665 INFO L225 Difference]: With dead ends: 747 [2022-02-15 00:39:49,665 INFO L226 Difference]: Without dead ends: 747 [2022-02-15 00:39:49,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:49,665 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 193 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:49,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 154 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:49,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-02-15 00:39:49,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 745. [2022-02-15 00:39:49,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 741 states have (on average 1.7543859649122806) internal successors, (1300), 741 states have internal predecessors, (1300), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1303 transitions. [2022-02-15 00:39:49,693 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1303 transitions. Word has length 30 [2022-02-15 00:39:49,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:49,693 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 1303 transitions. [2022-02-15 00:39:49,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,693 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1303 transitions. [2022-02-15 00:39:49,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 00:39:49,694 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:49,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:49,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 00:39:49,694 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:49,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:49,694 INFO L85 PathProgramCache]: Analyzing trace with hash 71945626, now seen corresponding path program 1 times [2022-02-15 00:39:49,694 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:49,694 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438925355] [2022-02-15 00:39:49,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:49,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:49,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:49,729 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:49,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438925355] [2022-02-15 00:39:49,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438925355] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:49,729 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:49,729 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:49,730 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198932228] [2022-02-15 00:39:49,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:49,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:49,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:49,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:49,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:49,730 INFO L87 Difference]: Start difference. First operand 745 states and 1303 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:49,808 INFO L93 Difference]: Finished difference Result 1387 states and 2448 transitions. [2022-02-15 00:39:49,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:49,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-02-15 00:39:49,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:49,812 INFO L225 Difference]: With dead ends: 1387 [2022-02-15 00:39:49,812 INFO L226 Difference]: Without dead ends: 1387 [2022-02-15 00:39:49,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:49,814 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 225 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:49,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 104 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:49,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2022-02-15 00:39:49,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1033. [2022-02-15 00:39:49,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 1029 states have (on average 1.7220602526724975) internal successors, (1772), 1029 states have internal predecessors, (1772), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1775 transitions. [2022-02-15 00:39:49,832 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1775 transitions. Word has length 30 [2022-02-15 00:39:49,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:49,834 INFO L470 AbstractCegarLoop]: Abstraction has 1033 states and 1775 transitions. [2022-02-15 00:39:49,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1775 transitions. [2022-02-15 00:39:49,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-15 00:39:49,836 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:49,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:49,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 00:39:49,836 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:49,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:49,836 INFO L85 PathProgramCache]: Analyzing trace with hash -925126727, now seen corresponding path program 1 times [2022-02-15 00:39:49,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:49,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300372198] [2022-02-15 00:39:49,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:49,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:49,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:49,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:49,900 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:49,900 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300372198] [2022-02-15 00:39:49,900 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300372198] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:49,900 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:49,900 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:49,901 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930369975] [2022-02-15 00:39:49,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:49,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:49,901 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:49,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:49,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:49,901 INFO L87 Difference]: Start difference. First operand 1033 states and 1775 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:49,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:49,972 INFO L93 Difference]: Finished difference Result 1451 states and 2488 transitions. [2022-02-15 00:39:49,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:49,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-02-15 00:39:49,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:49,977 INFO L225 Difference]: With dead ends: 1451 [2022-02-15 00:39:49,977 INFO L226 Difference]: Without dead ends: 1451 [2022-02-15 00:39:49,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:49,978 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 199 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:49,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 143 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:49,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2022-02-15 00:39:49,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1449. [2022-02-15 00:39:49,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1445 states have (on average 1.719031141868512) internal successors, (2484), 1445 states have internal predecessors, (2484), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2487 transitions. [2022-02-15 00:39:50,001 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2487 transitions. Word has length 30 [2022-02-15 00:39:50,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:50,001 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 2487 transitions. [2022-02-15 00:39:50,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2487 transitions. [2022-02-15 00:39:50,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-15 00:39:50,003 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:50,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:50,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 00:39:50,004 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:50,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:50,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2064620282, now seen corresponding path program 1 times [2022-02-15 00:39:50,004 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:50,004 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660961712] [2022-02-15 00:39:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:50,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:50,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:50,031 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:50,031 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660961712] [2022-02-15 00:39:50,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660961712] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:50,032 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:50,032 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:50,032 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489802039] [2022-02-15 00:39:50,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:50,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:50,032 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:50,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:50,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:50,033 INFO L87 Difference]: Start difference. First operand 1449 states and 2487 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:50,122 INFO L93 Difference]: Finished difference Result 1467 states and 2488 transitions. [2022-02-15 00:39:50,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:50,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-02-15 00:39:50,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:50,126 INFO L225 Difference]: With dead ends: 1467 [2022-02-15 00:39:50,126 INFO L226 Difference]: Without dead ends: 1467 [2022-02-15 00:39:50,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:50,127 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 192 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:50,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 151 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2022-02-15 00:39:50,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1465. [2022-02-15 00:39:50,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1461 states have (on average 1.700205338809035) internal successors, (2484), 1461 states have internal predecessors, (2484), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2487 transitions. [2022-02-15 00:39:50,148 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2487 transitions. Word has length 31 [2022-02-15 00:39:50,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:50,148 INFO L470 AbstractCegarLoop]: Abstraction has 1465 states and 2487 transitions. [2022-02-15 00:39:50,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2487 transitions. [2022-02-15 00:39:50,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-15 00:39:50,149 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:50,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:50,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 00:39:50,149 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:50,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:50,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1385875143, now seen corresponding path program 1 times [2022-02-15 00:39:50,150 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:50,150 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217290363] [2022-02-15 00:39:50,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:50,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:50,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:50,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:50,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217290363] [2022-02-15 00:39:50,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217290363] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:50,172 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:50,172 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:50,172 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643899382] [2022-02-15 00:39:50,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:50,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:50,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:50,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:50,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:50,173 INFO L87 Difference]: Start difference. First operand 1465 states and 2487 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:50,246 INFO L93 Difference]: Finished difference Result 2699 states and 4632 transitions. [2022-02-15 00:39:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:50,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-02-15 00:39:50,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:50,253 INFO L225 Difference]: With dead ends: 2699 [2022-02-15 00:39:50,254 INFO L226 Difference]: Without dead ends: 2699 [2022-02-15 00:39:50,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:50,254 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 218 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:50,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 103 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:50,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2022-02-15 00:39:50,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 2057. [2022-02-15 00:39:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2053 states have (on average 1.6619581100828056) internal successors, (3412), 2053 states have internal predecessors, (3412), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 3415 transitions. [2022-02-15 00:39:50,288 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 3415 transitions. Word has length 31 [2022-02-15 00:39:50,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:50,288 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 3415 transitions. [2022-02-15 00:39:50,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 3415 transitions. [2022-02-15 00:39:50,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-02-15 00:39:50,290 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:50,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:50,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 00:39:50,290 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:50,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:50,290 INFO L85 PathProgramCache]: Analyzing trace with hash 388802790, now seen corresponding path program 1 times [2022-02-15 00:39:50,290 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:50,290 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753978268] [2022-02-15 00:39:50,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:50,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:50,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:50,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:50,319 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:50,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753978268] [2022-02-15 00:39:50,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753978268] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:50,319 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:50,320 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:50,320 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889955782] [2022-02-15 00:39:50,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:50,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:50,320 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:50,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:50,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:50,320 INFO L87 Difference]: Start difference. First operand 2057 states and 3415 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:50,391 INFO L93 Difference]: Finished difference Result 2859 states and 4744 transitions. [2022-02-15 00:39:50,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:50,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-02-15 00:39:50,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:50,399 INFO L225 Difference]: With dead ends: 2859 [2022-02-15 00:39:50,399 INFO L226 Difference]: Without dead ends: 2859 [2022-02-15 00:39:50,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:50,400 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 193 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:50,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 145 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:50,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2022-02-15 00:39:50,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 2857. [2022-02-15 00:39:50,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2857 states, 2853 states have (on average 1.6614090431125133) internal successors, (4740), 2853 states have internal predecessors, (4740), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2857 states to 2857 states and 4743 transitions. [2022-02-15 00:39:50,443 INFO L78 Accepts]: Start accepts. Automaton has 2857 states and 4743 transitions. Word has length 31 [2022-02-15 00:39:50,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:50,444 INFO L470 AbstractCegarLoop]: Abstraction has 2857 states and 4743 transitions. [2022-02-15 00:39:50,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2857 states and 4743 transitions. [2022-02-15 00:39:50,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-15 00:39:50,446 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:50,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:50,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 00:39:50,446 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:50,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:50,446 INFO L85 PathProgramCache]: Analyzing trace with hash 12489205, now seen corresponding path program 1 times [2022-02-15 00:39:50,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:50,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554875086] [2022-02-15 00:39:50,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:50,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:50,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:50,493 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:50,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554875086] [2022-02-15 00:39:50,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554875086] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:50,493 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:50,493 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:50,493 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655266404] [2022-02-15 00:39:50,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:50,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:50,494 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:50,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:50,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:50,494 INFO L87 Difference]: Start difference. First operand 2857 states and 4743 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:50,565 INFO L93 Difference]: Finished difference Result 2891 states and 4744 transitions. [2022-02-15 00:39:50,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:50,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-02-15 00:39:50,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:50,573 INFO L225 Difference]: With dead ends: 2891 [2022-02-15 00:39:50,573 INFO L226 Difference]: Without dead ends: 2891 [2022-02-15 00:39:50,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:50,574 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 191 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:50,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 148 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 00:39:50,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2022-02-15 00:39:50,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 2889. [2022-02-15 00:39:50,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2889 states, 2885 states have (on average 1.6429809358752165) internal successors, (4740), 2885 states have internal predecessors, (4740), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 4743 transitions. [2022-02-15 00:39:50,623 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 4743 transitions. Word has length 32 [2022-02-15 00:39:50,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:50,624 INFO L470 AbstractCegarLoop]: Abstraction has 2889 states and 4743 transitions. [2022-02-15 00:39:50,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 4743 transitions. [2022-02-15 00:39:50,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-15 00:39:50,626 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:50,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:50,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 00:39:50,626 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:50,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:50,627 INFO L85 PathProgramCache]: Analyzing trace with hash -831982666, now seen corresponding path program 1 times [2022-02-15 00:39:50,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:50,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722981666] [2022-02-15 00:39:50,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:50,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:50,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:50,667 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:50,667 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722981666] [2022-02-15 00:39:50,667 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722981666] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:50,667 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:50,667 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:50,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694209337] [2022-02-15 00:39:50,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:50,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:50,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:50,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:50,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:50,668 INFO L87 Difference]: Start difference. First operand 2889 states and 4743 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:50,747 INFO L93 Difference]: Finished difference Result 5259 states and 8744 transitions. [2022-02-15 00:39:50,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:50,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-02-15 00:39:50,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:50,761 INFO L225 Difference]: With dead ends: 5259 [2022-02-15 00:39:50,762 INFO L226 Difference]: Without dead ends: 5259 [2022-02-15 00:39:50,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:50,762 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 211 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:50,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 102 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:50,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2022-02-15 00:39:50,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 4105. [2022-02-15 00:39:50,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4105 states, 4101 states have (on average 1.6005852231163131) internal successors, (6564), 4101 states have internal predecessors, (6564), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4105 states to 4105 states and 6567 transitions. [2022-02-15 00:39:50,832 INFO L78 Accepts]: Start accepts. Automaton has 4105 states and 6567 transitions. Word has length 32 [2022-02-15 00:39:50,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:50,832 INFO L470 AbstractCegarLoop]: Abstraction has 4105 states and 6567 transitions. [2022-02-15 00:39:50,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,832 INFO L276 IsEmpty]: Start isEmpty. Operand 4105 states and 6567 transitions. [2022-02-15 00:39:50,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-02-15 00:39:50,835 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:50,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:50,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 00:39:50,836 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:50,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:50,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1829055019, now seen corresponding path program 1 times [2022-02-15 00:39:50,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:50,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83299166] [2022-02-15 00:39:50,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:50,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:50,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:50,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:50,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83299166] [2022-02-15 00:39:50,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83299166] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:50,856 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:50,856 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:50,856 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091877984] [2022-02-15 00:39:50,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:50,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:50,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:50,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:50,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:50,857 INFO L87 Difference]: Start difference. First operand 4105 states and 6567 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:50,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:50,934 INFO L93 Difference]: Finished difference Result 5643 states and 9032 transitions. [2022-02-15 00:39:50,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:50,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-02-15 00:39:50,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:50,946 INFO L225 Difference]: With dead ends: 5643 [2022-02-15 00:39:50,946 INFO L226 Difference]: Without dead ends: 5643 [2022-02-15 00:39:50,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:50,951 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 187 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:50,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 147 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:50,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5643 states. [2022-02-15 00:39:51,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5643 to 5641. [2022-02-15 00:39:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5641 states, 5637 states have (on average 1.6015611140677666) internal successors, (9028), 5637 states have internal predecessors, (9028), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:51,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5641 states to 5641 states and 9031 transitions. [2022-02-15 00:39:51,058 INFO L78 Accepts]: Start accepts. Automaton has 5641 states and 9031 transitions. Word has length 32 [2022-02-15 00:39:51,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:51,058 INFO L470 AbstractCegarLoop]: Abstraction has 5641 states and 9031 transitions. [2022-02-15 00:39:51,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:51,059 INFO L276 IsEmpty]: Start isEmpty. Operand 5641 states and 9031 transitions. [2022-02-15 00:39:51,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 00:39:51,064 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:51,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:51,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 00:39:51,065 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:51,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:51,065 INFO L85 PathProgramCache]: Analyzing trace with hash -21626014, now seen corresponding path program 1 times [2022-02-15 00:39:51,065 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:51,065 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807017257] [2022-02-15 00:39:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:51,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:51,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:51,084 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:51,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807017257] [2022-02-15 00:39:51,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807017257] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:51,084 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:51,084 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:51,084 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146925574] [2022-02-15 00:39:51,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:51,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:51,084 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:51,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:51,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:51,085 INFO L87 Difference]: Start difference. First operand 5641 states and 9031 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:51,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:51,156 INFO L93 Difference]: Finished difference Result 5707 states and 9032 transitions. [2022-02-15 00:39:51,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:51,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-02-15 00:39:51,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:51,164 INFO L225 Difference]: With dead ends: 5707 [2022-02-15 00:39:51,165 INFO L226 Difference]: Without dead ends: 5707 [2022-02-15 00:39:51,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:51,165 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 190 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:51,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 145 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 00:39:51,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2022-02-15 00:39:51,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 5705. [2022-02-15 00:39:51,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5705 states, 5701 states have (on average 1.5835818277495177) internal successors, (9028), 5701 states have internal predecessors, (9028), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:51,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5705 states to 5705 states and 9031 transitions. [2022-02-15 00:39:51,233 INFO L78 Accepts]: Start accepts. Automaton has 5705 states and 9031 transitions. Word has length 33 [2022-02-15 00:39:51,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:51,234 INFO L470 AbstractCegarLoop]: Abstraction has 5705 states and 9031 transitions. [2022-02-15 00:39:51,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:51,234 INFO L276 IsEmpty]: Start isEmpty. Operand 5705 states and 9031 transitions. [2022-02-15 00:39:51,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 00:39:51,238 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:51,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:51,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 00:39:51,238 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:51,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:51,238 INFO L85 PathProgramCache]: Analyzing trace with hash -866097885, now seen corresponding path program 1 times [2022-02-15 00:39:51,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:51,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199239589] [2022-02-15 00:39:51,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:51,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:51,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:51,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:51,265 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:51,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199239589] [2022-02-15 00:39:51,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199239589] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:51,265 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:51,265 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:51,265 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287052455] [2022-02-15 00:39:51,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:51,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:51,266 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:51,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:51,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:51,267 INFO L87 Difference]: Start difference. First operand 5705 states and 9031 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:51,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:51,375 INFO L93 Difference]: Finished difference Result 10251 states and 16456 transitions. [2022-02-15 00:39:51,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:51,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-02-15 00:39:51,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:51,398 INFO L225 Difference]: With dead ends: 10251 [2022-02-15 00:39:51,398 INFO L226 Difference]: Without dead ends: 10251 [2022-02-15 00:39:51,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:51,399 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 204 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:51,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 101 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:51,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10251 states. [2022-02-15 00:39:51,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10251 to 8201. [2022-02-15 00:39:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8201 states, 8197 states have (on average 1.5386116872026352) internal successors, (12612), 8197 states have internal predecessors, (12612), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:51,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8201 states to 8201 states and 12615 transitions. [2022-02-15 00:39:51,526 INFO L78 Accepts]: Start accepts. Automaton has 8201 states and 12615 transitions. Word has length 33 [2022-02-15 00:39:51,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:51,526 INFO L470 AbstractCegarLoop]: Abstraction has 8201 states and 12615 transitions. [2022-02-15 00:39:51,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:51,526 INFO L276 IsEmpty]: Start isEmpty. Operand 8201 states and 12615 transitions. [2022-02-15 00:39:51,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-02-15 00:39:51,533 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:51,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:51,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 00:39:51,533 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:51,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:51,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1863170238, now seen corresponding path program 1 times [2022-02-15 00:39:51,534 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:51,534 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24284610] [2022-02-15 00:39:51,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:51,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:51,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:51,562 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:51,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24284610] [2022-02-15 00:39:51,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24284610] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:51,562 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:51,562 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:51,562 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634343046] [2022-02-15 00:39:51,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:51,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:51,563 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:51,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:51,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:51,563 INFO L87 Difference]: Start difference. First operand 8201 states and 12615 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:51,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:51,646 INFO L93 Difference]: Finished difference Result 11147 states and 17160 transitions. [2022-02-15 00:39:51,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:51,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-02-15 00:39:51,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:51,663 INFO L225 Difference]: With dead ends: 11147 [2022-02-15 00:39:51,664 INFO L226 Difference]: Without dead ends: 11147 [2022-02-15 00:39:51,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:51,664 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 181 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:51,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 149 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:51,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11147 states. [2022-02-15 00:39:51,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11147 to 11145. [2022-02-15 00:39:51,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11145 states, 11141 states have (on average 1.5398976752535678) internal successors, (17156), 11141 states have internal predecessors, (17156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:51,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11145 states to 11145 states and 17159 transitions. [2022-02-15 00:39:51,852 INFO L78 Accepts]: Start accepts. Automaton has 11145 states and 17159 transitions. Word has length 33 [2022-02-15 00:39:51,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:51,853 INFO L470 AbstractCegarLoop]: Abstraction has 11145 states and 17159 transitions. [2022-02-15 00:39:51,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:51,853 INFO L276 IsEmpty]: Start isEmpty. Operand 11145 states and 17159 transitions. [2022-02-15 00:39:51,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-15 00:39:51,860 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:51,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:51,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 00:39:51,860 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:51,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:51,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1079197679, now seen corresponding path program 1 times [2022-02-15 00:39:51,862 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:51,862 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761941733] [2022-02-15 00:39:51,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:51,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:51,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:51,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:51,887 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:51,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761941733] [2022-02-15 00:39:51,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761941733] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:51,887 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:51,887 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:51,889 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040736230] [2022-02-15 00:39:51,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:51,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:51,889 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:51,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:51,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:51,890 INFO L87 Difference]: Start difference. First operand 11145 states and 17159 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:51,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:51,975 INFO L93 Difference]: Finished difference Result 11275 states and 17160 transitions. [2022-02-15 00:39:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:51,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-02-15 00:39:51,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:51,991 INFO L225 Difference]: With dead ends: 11275 [2022-02-15 00:39:51,991 INFO L226 Difference]: Without dead ends: 11275 [2022-02-15 00:39:51,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:51,992 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 189 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:51,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 142 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:52,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11275 states. [2022-02-15 00:39:52,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11275 to 11273. [2022-02-15 00:39:52,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11273 states, 11269 states have (on average 1.5224066021829799) internal successors, (17156), 11269 states have internal predecessors, (17156), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11273 states to 11273 states and 17159 transitions. [2022-02-15 00:39:52,127 INFO L78 Accepts]: Start accepts. Automaton has 11273 states and 17159 transitions. Word has length 34 [2022-02-15 00:39:52,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:52,127 INFO L470 AbstractCegarLoop]: Abstraction has 11273 states and 17159 transitions. [2022-02-15 00:39:52,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:52,127 INFO L276 IsEmpty]: Start isEmpty. Operand 11273 states and 17159 transitions. [2022-02-15 00:39:52,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-15 00:39:52,134 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:52,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:52,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 00:39:52,134 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:52,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:52,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1923669550, now seen corresponding path program 1 times [2022-02-15 00:39:52,135 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:52,135 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607497322] [2022-02-15 00:39:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:52,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:52,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:52,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:52,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607497322] [2022-02-15 00:39:52,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607497322] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:52,158 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:52,158 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:52,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274344235] [2022-02-15 00:39:52,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:52,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:52,160 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:52,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:52,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:52,161 INFO L87 Difference]: Start difference. First operand 11273 states and 17159 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:52,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:52,293 INFO L93 Difference]: Finished difference Result 19979 states and 30856 transitions. [2022-02-15 00:39:52,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:52,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-02-15 00:39:52,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:52,325 INFO L225 Difference]: With dead ends: 19979 [2022-02-15 00:39:52,325 INFO L226 Difference]: Without dead ends: 19979 [2022-02-15 00:39:52,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:52,326 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 197 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:52,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 100 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:52,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19979 states. [2022-02-15 00:39:52,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19979 to 16393. [2022-02-15 00:39:52,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16393 states, 16389 states have (on average 1.4763560925010677) internal successors, (24196), 16389 states have internal predecessors, (24196), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:52,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16393 states to 16393 states and 24199 transitions. [2022-02-15 00:39:52,608 INFO L78 Accepts]: Start accepts. Automaton has 16393 states and 24199 transitions. Word has length 34 [2022-02-15 00:39:52,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:52,609 INFO L470 AbstractCegarLoop]: Abstraction has 16393 states and 24199 transitions. [2022-02-15 00:39:52,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:52,609 INFO L276 IsEmpty]: Start isEmpty. Operand 16393 states and 24199 transitions. [2022-02-15 00:39:52,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-02-15 00:39:52,626 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:52,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:52,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 00:39:52,626 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:52,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:52,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1374225393, now seen corresponding path program 1 times [2022-02-15 00:39:52,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:52,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503648319] [2022-02-15 00:39:52,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:52,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:52,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:52,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:52,696 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:52,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503648319] [2022-02-15 00:39:52,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503648319] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:52,696 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:52,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:52,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911391134] [2022-02-15 00:39:52,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:52,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:52,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:52,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:52,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:52,697 INFO L87 Difference]: Start difference. First operand 16393 states and 24199 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:52,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:52,812 INFO L93 Difference]: Finished difference Result 22027 states and 32520 transitions. [2022-02-15 00:39:52,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:52,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-02-15 00:39:52,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:52,846 INFO L225 Difference]: With dead ends: 22027 [2022-02-15 00:39:52,846 INFO L226 Difference]: Without dead ends: 22027 [2022-02-15 00:39:52,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:52,846 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 175 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:52,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 151 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:52,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22027 states. [2022-02-15 00:39:53,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22027 to 22025. [2022-02-15 00:39:53,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22025 states, 22021 states have (on average 1.4765905272240134) internal successors, (32516), 22021 states have internal predecessors, (32516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:53,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22025 states to 22025 states and 32519 transitions. [2022-02-15 00:39:53,133 INFO L78 Accepts]: Start accepts. Automaton has 22025 states and 32519 transitions. Word has length 34 [2022-02-15 00:39:53,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:53,133 INFO L470 AbstractCegarLoop]: Abstraction has 22025 states and 32519 transitions. [2022-02-15 00:39:53,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:53,133 INFO L276 IsEmpty]: Start isEmpty. Operand 22025 states and 32519 transitions. [2022-02-15 00:39:53,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-15 00:39:53,146 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:53,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:53,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 00:39:53,147 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:53,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:53,147 INFO L85 PathProgramCache]: Analyzing trace with hash 495819198, now seen corresponding path program 1 times [2022-02-15 00:39:53,147 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:53,147 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414656976] [2022-02-15 00:39:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:53,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:53,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:53,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:53,169 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:53,169 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414656976] [2022-02-15 00:39:53,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414656976] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:53,169 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:53,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:53,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129867034] [2022-02-15 00:39:53,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:53,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:53,170 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:53,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:53,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:53,171 INFO L87 Difference]: Start difference. First operand 22025 states and 32519 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:53,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:53,282 INFO L93 Difference]: Finished difference Result 22283 states and 32520 transitions. [2022-02-15 00:39:53,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:53,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-02-15 00:39:53,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:53,314 INFO L225 Difference]: With dead ends: 22283 [2022-02-15 00:39:53,315 INFO L226 Difference]: Without dead ends: 22283 [2022-02-15 00:39:53,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:53,315 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 188 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:53,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 139 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:53,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22283 states. [2022-02-15 00:39:53,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22283 to 22281. [2022-02-15 00:39:53,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22281 states, 22277 states have (on average 1.4596220316918795) internal successors, (32516), 22277 states have internal predecessors, (32516), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:53,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22281 states to 22281 states and 32519 transitions. [2022-02-15 00:39:53,660 INFO L78 Accepts]: Start accepts. Automaton has 22281 states and 32519 transitions. Word has length 35 [2022-02-15 00:39:53,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:53,661 INFO L470 AbstractCegarLoop]: Abstraction has 22281 states and 32519 transitions. [2022-02-15 00:39:53,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:53,661 INFO L276 IsEmpty]: Start isEmpty. Operand 22281 states and 32519 transitions. [2022-02-15 00:39:53,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-15 00:39:53,673 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:53,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:53,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 00:39:53,674 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:53,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:53,674 INFO L85 PathProgramCache]: Analyzing trace with hash -348652673, now seen corresponding path program 1 times [2022-02-15 00:39:53,674 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:53,674 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243632285] [2022-02-15 00:39:53,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:53,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:53,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:53,703 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:53,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243632285] [2022-02-15 00:39:53,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243632285] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:53,703 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:53,703 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:53,703 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336566493] [2022-02-15 00:39:53,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:53,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:53,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:53,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:53,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:53,704 INFO L87 Difference]: Start difference. First operand 22281 states and 32519 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:53,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:53,862 INFO L93 Difference]: Finished difference Result 43531 states and 61960 transitions. [2022-02-15 00:39:53,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:53,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-02-15 00:39:53,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:53,924 INFO L225 Difference]: With dead ends: 43531 [2022-02-15 00:39:53,924 INFO L226 Difference]: Without dead ends: 43531 [2022-02-15 00:39:53,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:53,925 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 208 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:53,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 117 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:53,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43531 states. [2022-02-15 00:39:54,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43531 to 43529. [2022-02-15 00:39:54,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43529 states, 43525 states have (on average 1.4234577828834003) internal successors, (61956), 43525 states have internal predecessors, (61956), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:54,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43529 states to 43529 states and 61959 transitions. [2022-02-15 00:39:54,554 INFO L78 Accepts]: Start accepts. Automaton has 43529 states and 61959 transitions. Word has length 35 [2022-02-15 00:39:54,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:54,554 INFO L470 AbstractCegarLoop]: Abstraction has 43529 states and 61959 transitions. [2022-02-15 00:39:54,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 43529 states and 61959 transitions. [2022-02-15 00:39:54,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-02-15 00:39:54,577 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:54,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:54,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 00:39:54,577 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:54,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:54,578 INFO L85 PathProgramCache]: Analyzing trace with hash 648419680, now seen corresponding path program 1 times [2022-02-15 00:39:54,578 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:54,578 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643936403] [2022-02-15 00:39:54,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:54,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:54,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:54,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:54,597 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:54,597 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643936403] [2022-02-15 00:39:54,597 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643936403] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:54,597 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:54,597 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:54,597 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598947751] [2022-02-15 00:39:54,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:54,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:54,597 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:54,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:54,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:54,598 INFO L87 Difference]: Start difference. First operand 43529 states and 61959 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:54,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:54,916 INFO L93 Difference]: Finished difference Result 49675 states and 72712 transitions. [2022-02-15 00:39:54,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:54,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-02-15 00:39:54,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:54,992 INFO L225 Difference]: With dead ends: 49675 [2022-02-15 00:39:54,992 INFO L226 Difference]: Without dead ends: 49675 [2022-02-15 00:39:54,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:54,993 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 129 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:54,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 156 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:55,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49675 states. [2022-02-15 00:39:55,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49675 to 43529. [2022-02-15 00:39:55,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43529 states, 43525 states have (on average 1.411694428489374) internal successors, (61444), 43525 states have internal predecessors, (61444), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:55,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43529 states to 43529 states and 61447 transitions. [2022-02-15 00:39:55,533 INFO L78 Accepts]: Start accepts. Automaton has 43529 states and 61447 transitions. Word has length 35 [2022-02-15 00:39:55,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:55,533 INFO L470 AbstractCegarLoop]: Abstraction has 43529 states and 61447 transitions. [2022-02-15 00:39:55,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:55,533 INFO L276 IsEmpty]: Start isEmpty. Operand 43529 states and 61447 transitions. [2022-02-15 00:39:55,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-15 00:39:55,555 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:55,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:55,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 00:39:55,556 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:55,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:55,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2076702253, now seen corresponding path program 1 times [2022-02-15 00:39:55,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:55,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988694146] [2022-02-15 00:39:55,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:55,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:55,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:55,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:55,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:55,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988694146] [2022-02-15 00:39:55,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988694146] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:55,697 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:55,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:55,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905476064] [2022-02-15 00:39:55,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:55,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:55,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:55,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:55,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:55,698 INFO L87 Difference]: Start difference. First operand 43529 states and 61447 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:55,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:55,906 INFO L93 Difference]: Finished difference Result 75275 states and 107528 transitions. [2022-02-15 00:39:55,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:55,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-02-15 00:39:55,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:56,004 INFO L225 Difference]: With dead ends: 75275 [2022-02-15 00:39:56,004 INFO L226 Difference]: Without dead ends: 75275 [2022-02-15 00:39:56,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:56,005 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 183 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:56,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 98 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:56,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75275 states. [2022-02-15 00:39:56,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75275 to 65033. [2022-02-15 00:39:56,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65033 states, 65029 states have (on average 1.3700349075028064) internal successors, (89092), 65029 states have internal predecessors, (89092), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:56,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65033 states to 65033 states and 89095 transitions. [2022-02-15 00:39:56,938 INFO L78 Accepts]: Start accepts. Automaton has 65033 states and 89095 transitions. Word has length 36 [2022-02-15 00:39:56,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:56,938 INFO L470 AbstractCegarLoop]: Abstraction has 65033 states and 89095 transitions. [2022-02-15 00:39:56,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:56,938 INFO L276 IsEmpty]: Start isEmpty. Operand 65033 states and 89095 transitions. [2022-02-15 00:39:56,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-02-15 00:39:56,990 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:56,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:56,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 00:39:56,990 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:56,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:56,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1079629900, now seen corresponding path program 1 times [2022-02-15 00:39:56,991 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:56,991 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353277943] [2022-02-15 00:39:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:56,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:57,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:57,182 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:57,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353277943] [2022-02-15 00:39:57,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353277943] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:57,182 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:57,182 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:57,182 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948340083] [2022-02-15 00:39:57,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:57,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:57,182 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:57,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:57,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:57,183 INFO L87 Difference]: Start difference. First operand 65033 states and 89095 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:57,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:57,438 INFO L93 Difference]: Finished difference Result 85515 states and 116744 transitions. [2022-02-15 00:39:57,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:57,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-02-15 00:39:57,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:57,531 INFO L225 Difference]: With dead ends: 85515 [2022-02-15 00:39:57,532 INFO L226 Difference]: Without dead ends: 85515 [2022-02-15 00:39:57,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:57,532 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 163 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:57,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 155 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:57,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85515 states. [2022-02-15 00:39:58,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85515 to 85513. [2022-02-15 00:39:58,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85513 states, 85509 states have (on average 1.3652364078634998) internal successors, (116740), 85509 states have internal predecessors, (116740), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85513 states to 85513 states and 116743 transitions. [2022-02-15 00:39:58,657 INFO L78 Accepts]: Start accepts. Automaton has 85513 states and 116743 transitions. Word has length 36 [2022-02-15 00:39:58,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:39:58,657 INFO L470 AbstractCegarLoop]: Abstraction has 85513 states and 116743 transitions. [2022-02-15 00:39:58,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 85513 states and 116743 transitions. [2022-02-15 00:39:58,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-15 00:39:58,725 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:39:58,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:39:58,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 00:39:58,726 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:39:58,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:39:58,726 INFO L85 PathProgramCache]: Analyzing trace with hash -46706245, now seen corresponding path program 1 times [2022-02-15 00:39:58,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:39:58,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668796861] [2022-02-15 00:39:58,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:39:58,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:39:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:58,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:39:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:39:58,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:39:58,747 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:39:58,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668796861] [2022-02-15 00:39:58,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668796861] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:39:58,748 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:39:58,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:39:58,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607659789] [2022-02-15 00:39:58,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:39:58,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:39:58,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:39:58,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:39:58,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:39:58,749 INFO L87 Difference]: Start difference. First operand 85513 states and 116743 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:39:59,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:39:59,245 INFO L93 Difference]: Finished difference Result 87051 states and 117768 transitions. [2022-02-15 00:39:59,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:39:59,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-02-15 00:39:59,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:39:59,329 INFO L225 Difference]: With dead ends: 87051 [2022-02-15 00:39:59,329 INFO L226 Difference]: Without dead ends: 87051 [2022-02-15 00:39:59,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:39:59,330 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 186 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:39:59,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 133 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:39:59,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87051 states. [2022-02-15 00:40:00,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87051 to 87049. [2022-02-15 00:40:00,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87049 states, 87045 states have (on average 1.3529094146705727) internal successors, (117764), 87045 states have internal predecessors, (117764), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:00,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87049 states to 87049 states and 117767 transitions. [2022-02-15 00:40:00,233 INFO L78 Accepts]: Start accepts. Automaton has 87049 states and 117767 transitions. Word has length 37 [2022-02-15 00:40:00,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:40:00,233 INFO L470 AbstractCegarLoop]: Abstraction has 87049 states and 117767 transitions. [2022-02-15 00:40:00,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:00,233 INFO L276 IsEmpty]: Start isEmpty. Operand 87049 states and 117767 transitions. [2022-02-15 00:40:00,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-15 00:40:00,275 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:40:00,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:40:00,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 00:40:00,275 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:40:00,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:40:00,276 INFO L85 PathProgramCache]: Analyzing trace with hash -891178116, now seen corresponding path program 1 times [2022-02-15 00:40:00,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:40:00,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230972434] [2022-02-15 00:40:00,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:40:00,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:40:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:00,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:40:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:40:00,294 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:40:00,294 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230972434] [2022-02-15 00:40:00,294 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230972434] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:40:00,294 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:40:00,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:40:00,295 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578141684] [2022-02-15 00:40:00,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:40:00,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:40:00,295 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:40:00,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:40:00,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:40:00,295 INFO L87 Difference]: Start difference. First operand 87049 states and 117767 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:00,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:40:00,666 INFO L93 Difference]: Finished difference Result 147467 states and 200712 transitions. [2022-02-15 00:40:00,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:40:00,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-02-15 00:40:00,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:40:00,865 INFO L225 Difference]: With dead ends: 147467 [2022-02-15 00:40:00,865 INFO L226 Difference]: Without dead ends: 147467 [2022-02-15 00:40:00,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:40:00,866 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 176 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:40:00,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 97 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:40:00,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147467 states. [2022-02-15 00:40:02,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147467 to 131081. [2022-02-15 00:40:02,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131081 states, 131077 states have (on average 1.312480450422271) internal successors, (172036), 131077 states have internal predecessors, (172036), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:03,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131081 states to 131081 states and 172039 transitions. [2022-02-15 00:40:03,013 INFO L78 Accepts]: Start accepts. Automaton has 131081 states and 172039 transitions. Word has length 37 [2022-02-15 00:40:03,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:40:03,013 INFO L470 AbstractCegarLoop]: Abstraction has 131081 states and 172039 transitions. [2022-02-15 00:40:03,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:03,013 INFO L276 IsEmpty]: Start isEmpty. Operand 131081 states and 172039 transitions. [2022-02-15 00:40:03,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-02-15 00:40:03,089 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:40:03,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:40:03,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 00:40:03,090 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:40:03,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:40:03,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1888250469, now seen corresponding path program 1 times [2022-02-15 00:40:03,090 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:40:03,090 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68671166] [2022-02-15 00:40:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:40:03,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:40:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:03,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:40:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:40:03,112 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:40:03,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68671166] [2022-02-15 00:40:03,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68671166] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:40:03,112 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:40:03,113 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:40:03,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787483459] [2022-02-15 00:40:03,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:40:03,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:40:03,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:40:03,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:40:03,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:40:03,113 INFO L87 Difference]: Start difference. First operand 131081 states and 172039 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:03,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:40:03,802 INFO L93 Difference]: Finished difference Result 169995 states and 221192 transitions. [2022-02-15 00:40:03,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:40:03,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-02-15 00:40:03,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:40:03,981 INFO L225 Difference]: With dead ends: 169995 [2022-02-15 00:40:03,982 INFO L226 Difference]: Without dead ends: 169995 [2022-02-15 00:40:03,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:40:03,982 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 157 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:40:03,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 157 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:40:04,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169995 states. [2022-02-15 00:40:05,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169995 to 169993. [2022-02-15 00:40:05,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169993 states, 169989 states have (on average 1.3011900770049827) internal successors, (221188), 169989 states have internal predecessors, (221188), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:06,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169993 states to 169993 states and 221191 transitions. [2022-02-15 00:40:06,006 INFO L78 Accepts]: Start accepts. Automaton has 169993 states and 221191 transitions. Word has length 37 [2022-02-15 00:40:06,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:40:06,007 INFO L470 AbstractCegarLoop]: Abstraction has 169993 states and 221191 transitions. [2022-02-15 00:40:06,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:06,007 INFO L276 IsEmpty]: Start isEmpty. Operand 169993 states and 221191 transitions. [2022-02-15 00:40:06,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-15 00:40:06,102 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:40:06,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:40:06,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 00:40:06,103 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:40:06,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:40:06,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1856684344, now seen corresponding path program 1 times [2022-02-15 00:40:06,103 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:40:06,103 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556031346] [2022-02-15 00:40:06,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:40:06,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:40:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:06,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:40:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:06,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:40:06,131 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:40:06,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556031346] [2022-02-15 00:40:06,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556031346] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:40:06,131 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:40:06,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:40:06,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981716047] [2022-02-15 00:40:06,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:40:06,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:40:06,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:40:06,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:40:06,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:40:06,132 INFO L87 Difference]: Start difference. First operand 169993 states and 221191 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:06,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:40:06,941 INFO L93 Difference]: Finished difference Result 172043 states and 221192 transitions. [2022-02-15 00:40:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:40:06,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-02-15 00:40:06,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:40:07,177 INFO L225 Difference]: With dead ends: 172043 [2022-02-15 00:40:07,177 INFO L226 Difference]: Without dead ends: 172043 [2022-02-15 00:40:07,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:40:07,178 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 185 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:40:07,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 130 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:40:07,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172043 states. [2022-02-15 00:40:08,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172043 to 172041. [2022-02-15 00:40:08,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172041 states, 172037 states have (on average 1.2857001691496597) internal successors, (221188), 172037 states have internal predecessors, (221188), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:09,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172041 states to 172041 states and 221191 transitions. [2022-02-15 00:40:09,370 INFO L78 Accepts]: Start accepts. Automaton has 172041 states and 221191 transitions. Word has length 38 [2022-02-15 00:40:09,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:40:09,370 INFO L470 AbstractCegarLoop]: Abstraction has 172041 states and 221191 transitions. [2022-02-15 00:40:09,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:09,370 INFO L276 IsEmpty]: Start isEmpty. Operand 172041 states and 221191 transitions. [2022-02-15 00:40:09,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-15 00:40:09,473 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:40:09,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:40:09,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-15 00:40:09,474 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:40:09,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:40:09,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1593811081, now seen corresponding path program 1 times [2022-02-15 00:40:09,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:40:09,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802142625] [2022-02-15 00:40:09,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:40:09,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:40:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:09,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:40:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:09,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:40:09,504 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:40:09,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802142625] [2022-02-15 00:40:09,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802142625] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:40:09,504 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:40:09,504 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:40:09,504 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818552223] [2022-02-15 00:40:09,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:40:09,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:40:09,504 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:40:09,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:40:09,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:40:09,505 INFO L87 Difference]: Start difference. First operand 172041 states and 221191 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:10,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:40:10,540 INFO L93 Difference]: Finished difference Result 286731 states and 368648 transitions. [2022-02-15 00:40:10,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:40:10,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-02-15 00:40:10,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:40:10,972 INFO L225 Difference]: With dead ends: 286731 [2022-02-15 00:40:10,972 INFO L226 Difference]: Without dead ends: 286731 [2022-02-15 00:40:10,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:40:10,972 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 169 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:40:10,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 96 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:40:11,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286731 states. [2022-02-15 00:40:13,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286731 to 262153. [2022-02-15 00:40:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262153 states, 262149 states have (on average 1.2499914170948583) internal successors, (327684), 262149 states have internal predecessors, (327684), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:14,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262153 states to 262153 states and 327687 transitions. [2022-02-15 00:40:14,014 INFO L78 Accepts]: Start accepts. Automaton has 262153 states and 327687 transitions. Word has length 38 [2022-02-15 00:40:14,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:40:14,014 INFO L470 AbstractCegarLoop]: Abstraction has 262153 states and 327687 transitions. [2022-02-15 00:40:14,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:14,014 INFO L276 IsEmpty]: Start isEmpty. Operand 262153 states and 327687 transitions. [2022-02-15 00:40:14,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-15 00:40:14,575 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:40:14,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:40:14,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-15 00:40:14,575 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:40:14,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:40:14,576 INFO L85 PathProgramCache]: Analyzing trace with hash 596738728, now seen corresponding path program 1 times [2022-02-15 00:40:14,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:40:14,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457041832] [2022-02-15 00:40:14,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:40:14,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:40:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:14,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:40:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:40:14,596 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:40:14,597 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457041832] [2022-02-15 00:40:14,597 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457041832] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:40:14,597 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:40:14,597 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:40:14,597 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523231166] [2022-02-15 00:40:14,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:40:14,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:40:14,597 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:40:14,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:40:14,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:40:14,597 INFO L87 Difference]: Start difference. First operand 262153 states and 327687 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:15,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:40:15,606 INFO L93 Difference]: Finished difference Result 335883 states and 413704 transitions. [2022-02-15 00:40:15,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:40:15,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-02-15 00:40:15,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:40:16,114 INFO L225 Difference]: With dead ends: 335883 [2022-02-15 00:40:16,114 INFO L226 Difference]: Without dead ends: 335883 [2022-02-15 00:40:16,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:40:16,115 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 151 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:40:16,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 159 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:40:16,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335883 states. [2022-02-15 00:40:19,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335883 to 335881. [2022-02-15 00:40:19,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335881 states, 335877 states have (on average 1.2317008905045597) internal successors, (413700), 335877 states have internal predecessors, (413700), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:20,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335881 states to 335881 states and 413703 transitions. [2022-02-15 00:40:20,297 INFO L78 Accepts]: Start accepts. Automaton has 335881 states and 413703 transitions. Word has length 38 [2022-02-15 00:40:20,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:40:20,297 INFO L470 AbstractCegarLoop]: Abstraction has 335881 states and 413703 transitions. [2022-02-15 00:40:20,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:20,298 INFO L276 IsEmpty]: Start isEmpty. Operand 335881 states and 413703 transitions. [2022-02-15 00:40:20,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 00:40:20,836 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:40:20,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:40:20,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-15 00:40:20,836 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:40:20,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:40:20,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2131430441, now seen corresponding path program 1 times [2022-02-15 00:40:20,837 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:40:20,837 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084368701] [2022-02-15 00:40:20,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:40:20,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:40:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:20,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:40:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:40:20,861 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:40:20,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084368701] [2022-02-15 00:40:20,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084368701] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:40:20,861 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:40:20,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:40:20,861 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378006022] [2022-02-15 00:40:20,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:40:20,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:40:20,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:40:20,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:40:20,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:40:20,862 INFO L87 Difference]: Start difference. First operand 335881 states and 413703 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:21,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:40:21,882 INFO L93 Difference]: Finished difference Result 339979 states and 413704 transitions. [2022-02-15 00:40:21,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:40:21,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-02-15 00:40:21,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:40:22,328 INFO L225 Difference]: With dead ends: 339979 [2022-02-15 00:40:22,328 INFO L226 Difference]: Without dead ends: 339979 [2022-02-15 00:40:22,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:40:22,329 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 184 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:40:22,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 127 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:40:22,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339979 states. [2022-02-15 00:40:25,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339979 to 339977. [2022-02-15 00:40:25,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339977 states, 339973 states have (on average 1.2168613389886844) internal successors, (413700), 339973 states have internal predecessors, (413700), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339977 states to 339977 states and 413703 transitions. [2022-02-15 00:40:26,301 INFO L78 Accepts]: Start accepts. Automaton has 339977 states and 413703 transitions. Word has length 39 [2022-02-15 00:40:26,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:40:26,302 INFO L470 AbstractCegarLoop]: Abstraction has 339977 states and 413703 transitions. [2022-02-15 00:40:26,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:26,302 INFO L276 IsEmpty]: Start isEmpty. Operand 339977 states and 413703 transitions. [2022-02-15 00:40:26,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 00:40:26,509 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:40:26,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:40:26,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-15 00:40:26,509 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:40:26,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:40:26,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1319064984, now seen corresponding path program 1 times [2022-02-15 00:40:26,510 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:40:26,510 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886850804] [2022-02-15 00:40:26,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:40:26,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:40:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:26,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:40:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:40:26,539 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:40:26,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886850804] [2022-02-15 00:40:26,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886850804] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:40:26,539 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:40:26,539 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:40:26,539 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886471217] [2022-02-15 00:40:26,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:40:26,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:40:26,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:40:26,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:40:26,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:40:26,541 INFO L87 Difference]: Start difference. First operand 339977 states and 413703 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:28,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:40:28,185 INFO L93 Difference]: Finished difference Result 557067 states and 671752 transitions. [2022-02-15 00:40:28,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:40:28,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-02-15 00:40:28,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:40:29,301 INFO L225 Difference]: With dead ends: 557067 [2022-02-15 00:40:29,301 INFO L226 Difference]: Without dead ends: 557067 [2022-02-15 00:40:29,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:40:29,302 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 162 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:40:29,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 95 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:40:29,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557067 states. [2022-02-15 00:40:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557067 to 524297. [2022-02-15 00:40:34,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524297 states, 524293 states have (on average 1.1874963045472664) internal successors, (622596), 524293 states have internal predecessors, (622596), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524297 states to 524297 states and 622599 transitions. [2022-02-15 00:40:36,536 INFO L78 Accepts]: Start accepts. Automaton has 524297 states and 622599 transitions. Word has length 39 [2022-02-15 00:40:36,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:40:36,536 INFO L470 AbstractCegarLoop]: Abstraction has 524297 states and 622599 transitions. [2022-02-15 00:40:36,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 524297 states and 622599 transitions. [2022-02-15 00:40:37,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-02-15 00:40:37,053 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:40:37,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:40:37,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-15 00:40:37,054 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:40:37,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:40:37,067 INFO L85 PathProgramCache]: Analyzing trace with hash 321992631, now seen corresponding path program 1 times [2022-02-15 00:40:37,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:40:37,068 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746341340] [2022-02-15 00:40:37,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:40:37,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:40:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:37,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:40:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:37,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:40:37,101 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:40:37,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746341340] [2022-02-15 00:40:37,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746341340] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:40:37,102 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:40:37,102 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:40:37,102 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084005802] [2022-02-15 00:40:37,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:40:37,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:40:37,102 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:40:37,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:40:37,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:40:37,102 INFO L87 Difference]: Start difference. First operand 524297 states and 622599 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:39,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:40:39,464 INFO L93 Difference]: Finished difference Result 663563 states and 770056 transitions. [2022-02-15 00:40:39,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:40:39,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-02-15 00:40:39,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:40:40,647 INFO L225 Difference]: With dead ends: 663563 [2022-02-15 00:40:40,647 INFO L226 Difference]: Without dead ends: 663563 [2022-02-15 00:40:40,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:40:40,648 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 145 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:40:40,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 161 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:40:40,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663563 states. [2022-02-15 00:40:46,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663563 to 663561. [2022-02-15 00:40:46,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663561 states, 663557 states have (on average 1.1604911107862625) internal successors, (770052), 663557 states have internal predecessors, (770052), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:49,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663561 states to 663561 states and 770055 transitions. [2022-02-15 00:40:49,098 INFO L78 Accepts]: Start accepts. Automaton has 663561 states and 770055 transitions. Word has length 39 [2022-02-15 00:40:49,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:40:49,099 INFO L470 AbstractCegarLoop]: Abstraction has 663561 states and 770055 transitions. [2022-02-15 00:40:49,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:49,099 INFO L276 IsEmpty]: Start isEmpty. Operand 663561 states and 770055 transitions. [2022-02-15 00:40:49,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-15 00:40:49,574 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:40:49,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:40:49,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-15 00:40:49,574 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:40:49,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:40:49,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2058624732, now seen corresponding path program 1 times [2022-02-15 00:40:49,574 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:40:49,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441809420] [2022-02-15 00:40:49,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:40:49,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:40:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:49,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:40:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:40:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:40:49,648 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:40:49,648 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441809420] [2022-02-15 00:40:49,648 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441809420] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:40:49,648 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:40:49,648 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:40:49,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43276617] [2022-02-15 00:40:49,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:40:49,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:40:49,649 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:40:49,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:40:49,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:40:49,649 INFO L87 Difference]: Start difference. First operand 663561 states and 770055 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:40:51,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:40:51,974 INFO L93 Difference]: Finished difference Result 671755 states and 770056 transitions. [2022-02-15 00:40:51,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:40:51,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-02-15 00:40:51,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:40:53,421 INFO L225 Difference]: With dead ends: 671755 [2022-02-15 00:40:53,421 INFO L226 Difference]: Without dead ends: 671755 [2022-02-15 00:40:53,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:40:53,422 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 183 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:40:53,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 124 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:40:53,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671755 states. [2022-02-15 00:40:59,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671755 to 671753. [2022-02-15 00:41:00,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671753 states, 671749 states have (on average 1.1463388855063423) internal successors, (770052), 671749 states have internal predecessors, (770052), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:41:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671753 states to 671753 states and 770055 transitions. [2022-02-15 00:41:02,578 INFO L78 Accepts]: Start accepts. Automaton has 671753 states and 770055 transitions. Word has length 40 [2022-02-15 00:41:02,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:41:02,579 INFO L470 AbstractCegarLoop]: Abstraction has 671753 states and 770055 transitions. [2022-02-15 00:41:02,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:41:02,579 INFO L276 IsEmpty]: Start isEmpty. Operand 671753 states and 770055 transitions. [2022-02-15 00:41:03,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-15 00:41:03,456 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:41:03,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:41:03,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-15 00:41:03,457 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:41:03,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:41:03,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1391870693, now seen corresponding path program 1 times [2022-02-15 00:41:03,457 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:41:03,457 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445131250] [2022-02-15 00:41:03,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:41:03,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:41:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:41:03,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:41:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:41:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:41:03,484 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:41:03,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445131250] [2022-02-15 00:41:03,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445131250] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:41:03,485 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:41:03,485 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:41:03,485 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080233544] [2022-02-15 00:41:03,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:41:03,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:41:03,485 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:41:03,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:41:03,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:41:03,487 INFO L87 Difference]: Start difference. First operand 671753 states and 770055 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:41:06,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:41:06,556 INFO L93 Difference]: Finished difference Result 1081353 states and 1212423 transitions. [2022-02-15 00:41:06,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:41:06,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-02-15 00:41:06,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:41:08,442 INFO L225 Difference]: With dead ends: 1081353 [2022-02-15 00:41:08,442 INFO L226 Difference]: Without dead ends: 1081353 [2022-02-15 00:41:08,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:41:08,442 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 154 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:41:08,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 93 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:41:08,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081353 states. [2022-02-15 00:41:18,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081353 to 1048585. [2022-02-15 00:41:19,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048585 states, 1048581 states have (on average 1.1249984502866255) internal successors, (1179652), 1048581 states have internal predecessors, (1179652), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:41:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048585 states to 1048585 states and 1179655 transitions. [2022-02-15 00:41:22,269 INFO L78 Accepts]: Start accepts. Automaton has 1048585 states and 1179655 transitions. Word has length 40 [2022-02-15 00:41:22,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:41:22,270 INFO L470 AbstractCegarLoop]: Abstraction has 1048585 states and 1179655 transitions. [2022-02-15 00:41:22,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:41:22,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1048585 states and 1179655 transitions. [2022-02-15 00:41:23,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-15 00:41:23,432 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 00:41:23,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:41:23,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-15 00:41:23,434 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 00:41:23,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 00:41:23,435 INFO L85 PathProgramCache]: Analyzing trace with hash 394798340, now seen corresponding path program 1 times [2022-02-15 00:41:23,435 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 00:41:23,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315287726] [2022-02-15 00:41:23,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 00:41:23,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 00:41:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:41:23,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 00:41:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 00:41:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 00:41:23,895 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 00:41:23,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315287726] [2022-02-15 00:41:23,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315287726] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 00:41:23,895 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 00:41:23,895 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 00:41:23,895 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929983250] [2022-02-15 00:41:23,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 00:41:23,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 00:41:23,896 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 00:41:23,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 00:41:23,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-15 00:41:23,896 INFO L87 Difference]: Start difference. First operand 1048585 states and 1179655 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:41:28,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 00:41:28,069 INFO L93 Difference]: Finished difference Result 1310727 states and 1425414 transitions. [2022-02-15 00:41:28,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 00:41:28,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-02-15 00:41:28,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 00:41:28,070 INFO L225 Difference]: With dead ends: 1310727 [2022-02-15 00:41:28,070 INFO L226 Difference]: Without dead ends: 0 [2022-02-15 00:41:28,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-15 00:41:28,071 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 136 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 00:41:28,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 162 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 00:41:28,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-15 00:41:28,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-15 00:41:28,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 00:41:28,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-15 00:41:28,072 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2022-02-15 00:41:28,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 00:41:28,072 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-15 00:41:28,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-15 00:41:28,072 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-15 00:41:28,073 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-15 00:41:28,080 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-15 00:41:28,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-15 00:41:28,083 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 00:41:28,092 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 00:41:28,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:41:28 BasicIcfg [2022-02-15 00:41:28,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 00:41:28,094 INFO L158 Benchmark]: Toolchain (without parser) took 101150.25ms. Allocated memory was 208.7MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 160.0MB in the beginning and 5.1GB in the end (delta: -5.0GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2022-02-15 00:41:28,094 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 208.7MB. Free memory is still 176.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 00:41:28,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.58ms. Allocated memory is still 208.7MB. Free memory was 159.7MB in the beginning and 184.5MB in the end (delta: -24.7MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. [2022-02-15 00:41:28,094 INFO L158 Benchmark]: Boogie Preprocessor took 26.47ms. Allocated memory is still 208.7MB. Free memory was 184.5MB in the beginning and 182.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-15 00:41:28,094 INFO L158 Benchmark]: RCFGBuilder took 323.67ms. Allocated memory is still 208.7MB. Free memory was 182.4MB in the beginning and 167.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-02-15 00:41:28,094 INFO L158 Benchmark]: IcfgTransformer took 40.67ms. Allocated memory is still 208.7MB. Free memory was 167.7MB in the beginning and 166.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-15 00:41:28,094 INFO L158 Benchmark]: TraceAbstraction took 100568.01ms. Allocated memory was 208.7MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 165.6MB in the beginning and 5.1GB in the end (delta: -5.0GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2022-02-15 00:41:28,095 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 208.7MB. Free memory is still 176.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 184.58ms. Allocated memory is still 208.7MB. Free memory was 159.7MB in the beginning and 184.5MB in the end (delta: -24.7MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.47ms. Allocated memory is still 208.7MB. Free memory was 184.5MB in the beginning and 182.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 323.67ms. Allocated memory is still 208.7MB. Free memory was 182.4MB in the beginning and 167.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * IcfgTransformer took 40.67ms. Allocated memory is still 208.7MB. Free memory was 167.7MB in the beginning and 166.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 100568.01ms. Allocated memory was 208.7MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 165.6MB in the beginning and 5.1GB in the end (delta: -5.0GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 233]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 100.5s, OverallIterations: 42, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 4.9s, AutomataDifference: 30.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7972 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7972 mSDsluCounter, 5546 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 296 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3679 IncrementalHoareTripleChecker+Invalid, 3778 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 5250 mSDtfsCounter, 3679 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 294 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1048585occurred in iteration=41, InterpolantAutomatonStates: 168, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 62.2s AutomataMinimizationTime, 42 MinimizatonAttempts, 131118 StatesRemovedByMinimization, 41 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 1395 NumberOfCodeBlocks, 1395 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 1353 ConstructedInterpolants, 0 QuantifiedInterpolants, 3075 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 42 InterpolantComputations, 42 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-15 00:41:28,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...