/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:29:58,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:29:58,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:29:58,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:29:58,693 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 02:29:58,722 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:29:58,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:29:58,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:29:58,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:29:58,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:29:58,724 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:29:58,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:29:58,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:29:58,724 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:29:58,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:29:58,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:29:58,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:29:58,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:29:58,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:29:58,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:29:58,725 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:29:58,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:29:58,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:29:58,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:29:58,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:29:58,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:29:58,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:29:58,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:29:58,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:29:58,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:29:58,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:29:58,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:29:58,726 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:29:58,726 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:29:58,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:29:58,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:29:58,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:29:58,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:29:58,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:29:58,954 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:29:58,954 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:29:58,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label00.c [2022-01-10 02:29:59,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86eddf5f2/4b6d17866307441a82423bd1180f343b/FLAG2432060df [2022-01-10 02:29:59,502 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:29:59,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label00.c [2022-01-10 02:29:59,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86eddf5f2/4b6d17866307441a82423bd1180f343b/FLAG2432060df [2022-01-10 02:29:59,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86eddf5f2/4b6d17866307441a82423bd1180f343b [2022-01-10 02:29:59,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:29:59,741 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:29:59,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:29:59,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:29:59,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:29:59,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:29:59" (1/1) ... [2022-01-10 02:29:59,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494e2b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:59, skipping insertion in model container [2022-01-10 02:29:59,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:29:59" (1/1) ... [2022-01-10 02:29:59,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:29:59,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:30:00,169 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label00.c[26888,26901] [2022-01-10 02:30:00,195 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label00.c[28763,28776] [2022-01-10 02:30:00,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:30:00,718 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:30:00,746 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label00.c[26888,26901] [2022-01-10 02:30:00,748 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label00.c[28763,28776] [2022-01-10 02:30:00,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:30:01,060 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:30:01,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:01 WrapperNode [2022-01-10 02:30:01,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:30:01,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:30:01,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:30:01,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:30:01,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:01" (1/1) ... [2022-01-10 02:30:01,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:01" (1/1) ... [2022-01-10 02:30:01,277 INFO L137 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5279 [2022-01-10 02:30:01,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:30:01,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:30:01,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:30:01,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:30:01,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:01" (1/1) ... [2022-01-10 02:30:01,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:01" (1/1) ... [2022-01-10 02:30:01,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:01" (1/1) ... [2022-01-10 02:30:01,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:01" (1/1) ... [2022-01-10 02:30:01,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:01" (1/1) ... [2022-01-10 02:30:01,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:01" (1/1) ... [2022-01-10 02:30:01,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:01" (1/1) ... [2022-01-10 02:30:01,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:30:01,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:30:01,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:30:01,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:30:01,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:01" (1/1) ... [2022-01-10 02:30:01,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:30:01,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:30:01,650 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) [2022-01-10 02:30:01,655 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 [2022-01-10 02:30:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:30:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:30:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:30:01,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:30:01,832 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:30:01,833 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:30:04,642 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:30:04,654 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:30:04,655 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 02:30:04,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:30:04 BoogieIcfgContainer [2022-01-10 02:30:04,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:30:04,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:30:04,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:30:04,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:30:04,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:29:59" (1/3) ... [2022-01-10 02:30:04,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bda5f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:30:04, skipping insertion in model container [2022-01-10 02:30:04,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:30:01" (2/3) ... [2022-01-10 02:30:04,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bda5f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:30:04, skipping insertion in model container [2022-01-10 02:30:04,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:30:04" (3/3) ... [2022-01-10 02:30:04,663 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label00.c [2022-01-10 02:30:04,667 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:30:04,667 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:30:04,701 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:30:04,706 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2022-01-10 02:30:04,706 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:30:04,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:04,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 02:30:04,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:04,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:04,734 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:04,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:04,738 INFO L85 PathProgramCache]: Analyzing trace with hash -34194955, now seen corresponding path program 1 times [2022-01-10 02:30:04,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:04,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025425859] [2022-01-10 02:30:04,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:04,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:04,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:04,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025425859] [2022-01-10 02:30:04,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025425859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:04,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:04,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 02:30:04,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544746631] [2022-01-10 02:30:04,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:04,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:04,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:04,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:04,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:04,926 INFO L87 Difference]: Start difference. First operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:07,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:07,793 INFO L93 Difference]: Finished difference Result 2616 states and 5018 transitions. [2022-01-10 02:30:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:07,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-10 02:30:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:07,815 INFO L225 Difference]: With dead ends: 2616 [2022-01-10 02:30:07,815 INFO L226 Difference]: Without dead ends: 1650 [2022-01-10 02:30:07,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:07,823 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 1071 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:07,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 735 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-10 02:30:07,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2022-01-10 02:30:07,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2022-01-10 02:30:07,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1648 states have (on average 1.6492718446601942) internal successors, (2718), 1649 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:07,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2718 transitions. [2022-01-10 02:30:07,910 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2718 transitions. Word has length 16 [2022-01-10 02:30:07,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:07,910 INFO L470 AbstractCegarLoop]: Abstraction has 1650 states and 2718 transitions. [2022-01-10 02:30:07,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:07,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2718 transitions. [2022-01-10 02:30:07,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 02:30:07,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:07,912 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, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:07,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:30:07,912 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:07,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:07,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2117945689, now seen corresponding path program 1 times [2022-01-10 02:30:07,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:07,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316512248] [2022-01-10 02:30:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:07,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:07,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:07,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316512248] [2022-01-10 02:30:07,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316512248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:07,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:07,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:30:07,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57888825] [2022-01-10 02:30:07,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:07,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:30:07,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:07,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:30:07,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:30:07,988 INFO L87 Difference]: Start difference. First operand 1650 states and 2718 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:08,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:08,066 INFO L93 Difference]: Finished difference Result 1732 states and 2846 transitions. [2022-01-10 02:30:08,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:30:08,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-01-10 02:30:08,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:08,072 INFO L225 Difference]: With dead ends: 1732 [2022-01-10 02:30:08,072 INFO L226 Difference]: Without dead ends: 1650 [2022-01-10 02:30:08,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:30:08,077 INFO L933 BasicCegarLoop]: 1689 mSDtfsCounter, 3 mSDsluCounter, 5003 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6692 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:08,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6692 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:08,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2022-01-10 02:30:08,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2022-01-10 02:30:08,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1648 states have (on average 1.612257281553398) internal successors, (2657), 1649 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:08,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2657 transitions. [2022-01-10 02:30:08,110 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2657 transitions. Word has length 46 [2022-01-10 02:30:08,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:08,110 INFO L470 AbstractCegarLoop]: Abstraction has 1650 states and 2657 transitions. [2022-01-10 02:30:08,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:08,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2657 transitions. [2022-01-10 02:30:08,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 02:30:08,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:08,113 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:08,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:30:08,113 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:08,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:08,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1258624732, now seen corresponding path program 1 times [2022-01-10 02:30:08,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:08,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318718725] [2022-01-10 02:30:08,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:08,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:08,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:08,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318718725] [2022-01-10 02:30:08,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318718725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:08,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:08,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:08,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366608358] [2022-01-10 02:30:08,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:08,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:08,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:08,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:08,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:08,228 INFO L87 Difference]: Start difference. First operand 1650 states and 2657 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:10,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:10,753 INFO L93 Difference]: Finished difference Result 4656 states and 7584 transitions. [2022-01-10 02:30:10,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:10,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-01-10 02:30:10,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:10,764 INFO L225 Difference]: With dead ends: 4656 [2022-01-10 02:30:10,764 INFO L226 Difference]: Without dead ends: 3152 [2022-01-10 02:30:10,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:10,774 INFO L933 BasicCegarLoop]: 1340 mSDtfsCounter, 753 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:10,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 1539 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 02:30:10,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2022-01-10 02:30:10,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 3152. [2022-01-10 02:30:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3152 states, 3150 states have (on average 1.527936507936508) internal successors, (4813), 3151 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:10,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3152 states to 3152 states and 4813 transitions. [2022-01-10 02:30:10,829 INFO L78 Accepts]: Start accepts. Automaton has 3152 states and 4813 transitions. Word has length 87 [2022-01-10 02:30:10,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:10,831 INFO L470 AbstractCegarLoop]: Abstraction has 3152 states and 4813 transitions. [2022-01-10 02:30:10,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:10,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3152 states and 4813 transitions. [2022-01-10 02:30:10,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 02:30:10,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:10,836 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:10,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:30:10,837 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:10,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:10,837 INFO L85 PathProgramCache]: Analyzing trace with hash 368682225, now seen corresponding path program 1 times [2022-01-10 02:30:10,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:10,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895007154] [2022-01-10 02:30:10,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:10,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:10,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:10,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:10,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895007154] [2022-01-10 02:30:10,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895007154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:10,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:10,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 02:30:10,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121096984] [2022-01-10 02:30:10,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:10,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:10,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:10,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:10,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:10,955 INFO L87 Difference]: Start difference. First operand 3152 states and 4813 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:13,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:13,546 INFO L93 Difference]: Finished difference Result 9164 states and 14053 transitions. [2022-01-10 02:30:13,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:13,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-10 02:30:13,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:13,566 INFO L225 Difference]: With dead ends: 9164 [2022-01-10 02:30:13,566 INFO L226 Difference]: Without dead ends: 6158 [2022-01-10 02:30:13,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:13,576 INFO L933 BasicCegarLoop]: 684 mSDtfsCounter, 917 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:13,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 691 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 02:30:13,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6158 states. [2022-01-10 02:30:13,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6158 to 6156. [2022-01-10 02:30:13,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 6154 states have (on average 1.3639909002274944) internal successors, (8394), 6155 states have internal predecessors, (8394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:13,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 8394 transitions. [2022-01-10 02:30:13,674 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 8394 transitions. Word has length 90 [2022-01-10 02:30:13,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:13,675 INFO L470 AbstractCegarLoop]: Abstraction has 6156 states and 8394 transitions. [2022-01-10 02:30:13,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:13,676 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 8394 transitions. [2022-01-10 02:30:13,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 02:30:13,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:13,677 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:13,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:30:13,677 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:13,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:13,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1647713710, now seen corresponding path program 1 times [2022-01-10 02:30:13,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:13,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524819073] [2022-01-10 02:30:13,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:13,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:13,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:13,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524819073] [2022-01-10 02:30:13,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524819073] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:13,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:13,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 02:30:13,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004175908] [2022-01-10 02:30:13,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:13,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:13,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:13,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:13,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:13,774 INFO L87 Difference]: Start difference. First operand 6156 states and 8394 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:16,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:16,308 INFO L93 Difference]: Finished difference Result 18176 states and 24796 transitions. [2022-01-10 02:30:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:16,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-01-10 02:30:16,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:16,351 INFO L225 Difference]: With dead ends: 18176 [2022-01-10 02:30:16,351 INFO L226 Difference]: Without dead ends: 12166 [2022-01-10 02:30:16,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:16,357 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 1106 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:16,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1106 Valid, 786 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 02:30:16,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12166 states. [2022-01-10 02:30:16,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12166 to 12164. [2022-01-10 02:30:16,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12164 states, 12162 states have (on average 1.2800526229238611) internal successors, (15568), 12163 states have internal predecessors, (15568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:16,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12164 states to 12164 states and 15568 transitions. [2022-01-10 02:30:16,582 INFO L78 Accepts]: Start accepts. Automaton has 12164 states and 15568 transitions. Word has length 91 [2022-01-10 02:30:16,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:16,582 INFO L470 AbstractCegarLoop]: Abstraction has 12164 states and 15568 transitions. [2022-01-10 02:30:16,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:16,583 INFO L276 IsEmpty]: Start isEmpty. Operand 12164 states and 15568 transitions. [2022-01-10 02:30:16,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 02:30:16,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:16,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:16,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:30:16,584 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:16,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:16,584 INFO L85 PathProgramCache]: Analyzing trace with hash 211182729, now seen corresponding path program 1 times [2022-01-10 02:30:16,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:16,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706437080] [2022-01-10 02:30:16,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:16,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:16,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:16,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:16,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706437080] [2022-01-10 02:30:16,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706437080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:16,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:16,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:16,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991602689] [2022-01-10 02:30:16,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:16,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:16,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:16,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:16,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:16,624 INFO L87 Difference]: Start difference. First operand 12164 states and 15568 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:16,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:16,667 INFO L93 Difference]: Finished difference Result 12314 states and 15806 transitions. [2022-01-10 02:30:16,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:16,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 02:30:16,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:16,690 INFO L225 Difference]: With dead ends: 12314 [2022-01-10 02:30:16,690 INFO L226 Difference]: Without dead ends: 12236 [2022-01-10 02:30:16,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:16,696 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 1549 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:16,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:16,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12236 states. [2022-01-10 02:30:16,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12236 to 12234. [2022-01-10 02:30:16,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12234 states, 12232 states have (on average 1.2818835840418574) internal successors, (15680), 12233 states have internal predecessors, (15680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:16,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12234 states to 12234 states and 15680 transitions. [2022-01-10 02:30:16,843 INFO L78 Accepts]: Start accepts. Automaton has 12234 states and 15680 transitions. Word has length 106 [2022-01-10 02:30:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:16,844 INFO L470 AbstractCegarLoop]: Abstraction has 12234 states and 15680 transitions. [2022-01-10 02:30:16,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand 12234 states and 15680 transitions. [2022-01-10 02:30:16,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 02:30:16,845 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:16,845 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:16,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:30:16,845 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:16,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:16,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1458691583, now seen corresponding path program 1 times [2022-01-10 02:30:16,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:16,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208560257] [2022-01-10 02:30:16,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:16,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:16,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:16,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208560257] [2022-01-10 02:30:16,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208560257] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:16,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:16,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:16,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204160254] [2022-01-10 02:30:16,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:16,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:16,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:16,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:16,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:16,906 INFO L87 Difference]: Start difference. First operand 12234 states and 15680 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:16,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:16,957 INFO L93 Difference]: Finished difference Result 12518 states and 16132 transitions. [2022-01-10 02:30:16,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:16,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 02:30:16,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:16,979 INFO L225 Difference]: With dead ends: 12518 [2022-01-10 02:30:16,979 INFO L226 Difference]: Without dead ends: 12370 [2022-01-10 02:30:16,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:16,987 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 1545 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:16,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 1849 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:16,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12370 states. [2022-01-10 02:30:17,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12370 to 12368. [2022-01-10 02:30:17,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12368 states, 12366 states have (on average 1.2852175319424228) internal successors, (15893), 12367 states have internal predecessors, (15893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:17,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12368 states to 12368 states and 15893 transitions. [2022-01-10 02:30:17,130 INFO L78 Accepts]: Start accepts. Automaton has 12368 states and 15893 transitions. Word has length 106 [2022-01-10 02:30:17,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:17,130 INFO L470 AbstractCegarLoop]: Abstraction has 12368 states and 15893 transitions. [2022-01-10 02:30:17,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:17,130 INFO L276 IsEmpty]: Start isEmpty. Operand 12368 states and 15893 transitions. [2022-01-10 02:30:17,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 02:30:17,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:17,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:17,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 02:30:17,131 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:17,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:17,132 INFO L85 PathProgramCache]: Analyzing trace with hash 717259381, now seen corresponding path program 1 times [2022-01-10 02:30:17,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:17,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165306782] [2022-01-10 02:30:17,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:17,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:17,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:17,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165306782] [2022-01-10 02:30:17,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165306782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:17,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:17,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:17,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209284906] [2022-01-10 02:30:17,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:17,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:17,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:17,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:17,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:17,189 INFO L87 Difference]: Start difference. First operand 12368 states and 15893 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:17,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:17,312 INFO L93 Difference]: Finished difference Result 12908 states and 16751 transitions. [2022-01-10 02:30:17,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:17,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 02:30:17,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:17,333 INFO L225 Difference]: With dead ends: 12908 [2022-01-10 02:30:17,333 INFO L226 Difference]: Without dead ends: 12626 [2022-01-10 02:30:17,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:17,338 INFO L933 BasicCegarLoop]: 1714 mSDtfsCounter, 1541 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:17,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1541 Valid, 1848 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:17,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12626 states. [2022-01-10 02:30:17,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12626 to 12624. [2022-01-10 02:30:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12624 states, 12622 states have (on average 1.2911582950404057) internal successors, (16297), 12623 states have internal predecessors, (16297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:17,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12624 states to 12624 states and 16297 transitions. [2022-01-10 02:30:17,508 INFO L78 Accepts]: Start accepts. Automaton has 12624 states and 16297 transitions. Word has length 106 [2022-01-10 02:30:17,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:17,509 INFO L470 AbstractCegarLoop]: Abstraction has 12624 states and 16297 transitions. [2022-01-10 02:30:17,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:17,509 INFO L276 IsEmpty]: Start isEmpty. Operand 12624 states and 16297 transitions. [2022-01-10 02:30:17,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 02:30:17,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:17,512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:17,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 02:30:17,514 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:17,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:17,519 INFO L85 PathProgramCache]: Analyzing trace with hash -28323349, now seen corresponding path program 1 times [2022-01-10 02:30:17,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:17,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758439456] [2022-01-10 02:30:17,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:17,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:17,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:17,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758439456] [2022-01-10 02:30:17,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758439456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:17,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:17,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:17,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841000608] [2022-01-10 02:30:17,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:17,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:17,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:17,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:17,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:17,578 INFO L87 Difference]: Start difference. First operand 12624 states and 16297 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:17,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:17,653 INFO L93 Difference]: Finished difference Result 13652 states and 17923 transitions. [2022-01-10 02:30:17,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:17,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 02:30:17,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:17,674 INFO L225 Difference]: With dead ends: 13652 [2022-01-10 02:30:17,674 INFO L226 Difference]: Without dead ends: 13114 [2022-01-10 02:30:17,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:17,682 INFO L933 BasicCegarLoop]: 1709 mSDtfsCounter, 1537 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:17,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1847 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:17,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13114 states. [2022-01-10 02:30:17,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13114 to 13112. [2022-01-10 02:30:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13112 states, 13110 states have (on average 1.3013729977116706) internal successors, (17061), 13111 states have internal predecessors, (17061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:17,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13112 states to 13112 states and 17061 transitions. [2022-01-10 02:30:17,862 INFO L78 Accepts]: Start accepts. Automaton has 13112 states and 17061 transitions. Word has length 106 [2022-01-10 02:30:17,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:17,862 INFO L470 AbstractCegarLoop]: Abstraction has 13112 states and 17061 transitions. [2022-01-10 02:30:17,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:17,862 INFO L276 IsEmpty]: Start isEmpty. Operand 13112 states and 17061 transitions. [2022-01-10 02:30:17,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 02:30:17,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:17,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:17,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:30:17,863 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:17,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:17,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1968354207, now seen corresponding path program 1 times [2022-01-10 02:30:17,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:17,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033593690] [2022-01-10 02:30:17,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:17,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:17,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:17,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033593690] [2022-01-10 02:30:17,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033593690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:17,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:17,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:17,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227735450] [2022-01-10 02:30:17,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:17,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:17,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:17,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:17,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:17,913 INFO L87 Difference]: Start difference. First operand 13112 states and 17061 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:17,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:17,993 INFO L93 Difference]: Finished difference Result 15068 states and 20135 transitions. [2022-01-10 02:30:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:17,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 02:30:17,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:18,016 INFO L225 Difference]: With dead ends: 15068 [2022-01-10 02:30:18,016 INFO L226 Difference]: Without dead ends: 14042 [2022-01-10 02:30:18,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:18,023 INFO L933 BasicCegarLoop]: 1704 mSDtfsCounter, 1533 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:18,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 1846 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:18,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14042 states. [2022-01-10 02:30:18,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14042 to 14040. [2022-01-10 02:30:18,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14040 states, 14038 states have (on average 1.3179227810229377) internal successors, (18501), 14039 states have internal predecessors, (18501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:18,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14040 states to 14040 states and 18501 transitions. [2022-01-10 02:30:18,192 INFO L78 Accepts]: Start accepts. Automaton has 14040 states and 18501 transitions. Word has length 106 [2022-01-10 02:30:18,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:18,192 INFO L470 AbstractCegarLoop]: Abstraction has 14040 states and 18501 transitions. [2022-01-10 02:30:18,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:18,192 INFO L276 IsEmpty]: Start isEmpty. Operand 14040 states and 18501 transitions. [2022-01-10 02:30:18,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 02:30:18,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:18,193 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:18,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:30:18,193 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:18,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:18,194 INFO L85 PathProgramCache]: Analyzing trace with hash 732328407, now seen corresponding path program 1 times [2022-01-10 02:30:18,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:18,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449021153] [2022-01-10 02:30:18,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:18,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:18,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:18,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:18,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449021153] [2022-01-10 02:30:18,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449021153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:18,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:18,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:18,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013993308] [2022-01-10 02:30:18,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:18,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:18,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:18,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:18,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:18,233 INFO L87 Difference]: Start difference. First operand 14040 states and 18501 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:18,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:18,346 INFO L93 Difference]: Finished difference Result 17756 states and 24295 transitions. [2022-01-10 02:30:18,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:18,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 02:30:18,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:18,454 INFO L225 Difference]: With dead ends: 17756 [2022-01-10 02:30:18,455 INFO L226 Difference]: Without dead ends: 15802 [2022-01-10 02:30:18,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:18,459 INFO L933 BasicCegarLoop]: 1699 mSDtfsCounter, 1529 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:18,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 1845 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:18,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15802 states. [2022-01-10 02:30:18,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15802 to 15800. [2022-01-10 02:30:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15800 states, 15798 states have (on average 1.342258513735916) internal successors, (21205), 15799 states have internal predecessors, (21205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:18,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15800 states to 15800 states and 21205 transitions. [2022-01-10 02:30:18,675 INFO L78 Accepts]: Start accepts. Automaton has 15800 states and 21205 transitions. Word has length 106 [2022-01-10 02:30:18,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:18,675 INFO L470 AbstractCegarLoop]: Abstraction has 15800 states and 21205 transitions. [2022-01-10 02:30:18,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:18,677 INFO L276 IsEmpty]: Start isEmpty. Operand 15800 states and 21205 transitions. [2022-01-10 02:30:18,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 02:30:18,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:18,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:18,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 02:30:18,679 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:18,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:18,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1070121549, now seen corresponding path program 1 times [2022-01-10 02:30:18,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:18,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148955199] [2022-01-10 02:30:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:18,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:18,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:18,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:18,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148955199] [2022-01-10 02:30:18,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148955199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:18,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:18,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:18,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991785613] [2022-01-10 02:30:18,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:18,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:18,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:18,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:18,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:18,725 INFO L87 Difference]: Start difference. First operand 15800 states and 21205 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:18,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:18,892 INFO L93 Difference]: Finished difference Result 22844 states and 32087 transitions. [2022-01-10 02:30:18,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:18,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 02:30:18,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:18,923 INFO L225 Difference]: With dead ends: 22844 [2022-01-10 02:30:18,924 INFO L226 Difference]: Without dead ends: 19130 [2022-01-10 02:30:18,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:18,934 INFO L933 BasicCegarLoop]: 1694 mSDtfsCounter, 1525 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:18,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1844 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:18,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19130 states. [2022-01-10 02:30:19,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19130 to 19128. [2022-01-10 02:30:19,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19128 states, 19126 states have (on average 1.3730523894175468) internal successors, (26261), 19127 states have internal predecessors, (26261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:19,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19128 states to 19128 states and 26261 transitions. [2022-01-10 02:30:19,396 INFO L78 Accepts]: Start accepts. Automaton has 19128 states and 26261 transitions. Word has length 106 [2022-01-10 02:30:19,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:19,396 INFO L470 AbstractCegarLoop]: Abstraction has 19128 states and 26261 transitions. [2022-01-10 02:30:19,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:19,397 INFO L276 IsEmpty]: Start isEmpty. Operand 19128 states and 26261 transitions. [2022-01-10 02:30:19,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 02:30:19,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:19,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:19,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 02:30:19,398 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:19,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:19,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1478760321, now seen corresponding path program 1 times [2022-01-10 02:30:19,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:19,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231166090] [2022-01-10 02:30:19,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:19,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:19,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:19,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231166090] [2022-01-10 02:30:19,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231166090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:19,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:19,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 02:30:19,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216982758] [2022-01-10 02:30:19,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:19,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:30:19,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:19,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:30:19,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:30:19,495 INFO L87 Difference]: Start difference. First operand 19128 states and 26261 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:22,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:22,967 INFO L93 Difference]: Finished difference Result 131800 states and 199333 transitions. [2022-01-10 02:30:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 02:30:22,968 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-10 02:30:22,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:23,189 INFO L225 Difference]: With dead ends: 131800 [2022-01-10 02:30:23,189 INFO L226 Difference]: Without dead ends: 124758 [2022-01-10 02:30:23,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-01-10 02:30:23,223 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 15488 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15488 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:23,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15488 Valid, 4869 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:30:23,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124758 states. [2022-01-10 02:30:24,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124758 to 26168. [2022-01-10 02:30:24,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26168 states, 26166 states have (on average 1.407207826951005) internal successors, (36821), 26167 states have internal predecessors, (36821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26168 states to 26168 states and 36821 transitions. [2022-01-10 02:30:24,890 INFO L78 Accepts]: Start accepts. Automaton has 26168 states and 36821 transitions. Word has length 106 [2022-01-10 02:30:24,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:24,890 INFO L470 AbstractCegarLoop]: Abstraction has 26168 states and 36821 transitions. [2022-01-10 02:30:24,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:24,890 INFO L276 IsEmpty]: Start isEmpty. Operand 26168 states and 36821 transitions. [2022-01-10 02:30:24,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 02:30:24,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:24,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:24,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 02:30:24,892 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:24,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:24,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1961193007, now seen corresponding path program 1 times [2022-01-10 02:30:24,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:24,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665437334] [2022-01-10 02:30:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:24,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:24,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:24,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665437334] [2022-01-10 02:30:24,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665437334] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:24,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:24,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:24,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957826378] [2022-01-10 02:30:24,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:24,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:24,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:24,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:24,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:24,950 INFO L87 Difference]: Start difference. First operand 26168 states and 36821 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:26,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:26,661 INFO L93 Difference]: Finished difference Result 52924 states and 77143 transitions. [2022-01-10 02:30:26,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:26,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-01-10 02:30:26,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:26,708 INFO L225 Difference]: With dead ends: 52924 [2022-01-10 02:30:26,708 INFO L226 Difference]: Without dead ends: 38842 [2022-01-10 02:30:26,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:26,729 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 1516 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:26,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 1744 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:26,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38842 states. [2022-01-10 02:30:28,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38842 to 38584. [2022-01-10 02:30:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38584 states, 38582 states have (on average 1.422139857964854) internal successors, (54869), 38583 states have internal predecessors, (54869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:28,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38584 states to 38584 states and 54869 transitions. [2022-01-10 02:30:28,821 INFO L78 Accepts]: Start accepts. Automaton has 38584 states and 54869 transitions. Word has length 108 [2022-01-10 02:30:28,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:28,821 INFO L470 AbstractCegarLoop]: Abstraction has 38584 states and 54869 transitions. [2022-01-10 02:30:28,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:28,821 INFO L276 IsEmpty]: Start isEmpty. Operand 38584 states and 54869 transitions. [2022-01-10 02:30:28,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 02:30:28,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:28,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:28,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 02:30:28,823 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:28,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:28,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1894699495, now seen corresponding path program 1 times [2022-01-10 02:30:28,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:28,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038097444] [2022-01-10 02:30:28,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:28,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:29,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:29,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:29,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038097444] [2022-01-10 02:30:29,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038097444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:29,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:29,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 02:30:29,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918286782] [2022-01-10 02:30:29,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:29,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:30:29,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:29,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:30:29,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:30:29,065 INFO L87 Difference]: Start difference. First operand 38584 states and 54869 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:31,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:31,282 INFO L93 Difference]: Finished difference Result 65084 states and 94295 transitions. [2022-01-10 02:30:31,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:30:31,282 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-01-10 02:30:31,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:31,336 INFO L225 Difference]: With dead ends: 65084 [2022-01-10 02:30:31,336 INFO L226 Difference]: Without dead ends: 38586 [2022-01-10 02:30:31,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:30:31,360 INFO L933 BasicCegarLoop]: 1620 mSDtfsCounter, 9676 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9676 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:31,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9676 Valid, 2473 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:30:31,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38586 states. [2022-01-10 02:30:33,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38586 to 38584. [2022-01-10 02:30:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38584 states, 38582 states have (on average 1.4155046394691826) internal successors, (54613), 38583 states have internal predecessors, (54613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:33,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38584 states to 38584 states and 54613 transitions. [2022-01-10 02:30:33,599 INFO L78 Accepts]: Start accepts. Automaton has 38584 states and 54613 transitions. Word has length 108 [2022-01-10 02:30:33,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:33,599 INFO L470 AbstractCegarLoop]: Abstraction has 38584 states and 54613 transitions. [2022-01-10 02:30:33,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:33,600 INFO L276 IsEmpty]: Start isEmpty. Operand 38584 states and 54613 transitions. [2022-01-10 02:30:33,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 02:30:33,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:33,601 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:33,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 02:30:33,601 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:33,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:33,601 INFO L85 PathProgramCache]: Analyzing trace with hash 979135041, now seen corresponding path program 1 times [2022-01-10 02:30:33,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:33,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081181356] [2022-01-10 02:30:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:33,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:33,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:33,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:33,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081181356] [2022-01-10 02:30:33,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081181356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:33,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:33,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:30:33,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820373600] [2022-01-10 02:30:33,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:33,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:30:33,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:30:33,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:30:33,694 INFO L87 Difference]: Start difference. First operand 38584 states and 54613 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:35,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:35,623 INFO L93 Difference]: Finished difference Result 65082 states and 93782 transitions. [2022-01-10 02:30:35,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:30:35,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-01-10 02:30:35,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:35,672 INFO L225 Difference]: With dead ends: 65082 [2022-01-10 02:30:35,672 INFO L226 Difference]: Without dead ends: 38584 [2022-01-10 02:30:35,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:30:35,701 INFO L933 BasicCegarLoop]: 1568 mSDtfsCounter, 4752 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4752 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:35,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4752 Valid, 3123 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 02:30:35,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38584 states. [2022-01-10 02:30:37,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38584 to 38584. [2022-01-10 02:30:37,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38584 states, 38582 states have (on average 1.4088694209735109) internal successors, (54357), 38583 states have internal predecessors, (54357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:37,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38584 states to 38584 states and 54357 transitions. [2022-01-10 02:30:37,854 INFO L78 Accepts]: Start accepts. Automaton has 38584 states and 54357 transitions. Word has length 109 [2022-01-10 02:30:37,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:37,855 INFO L470 AbstractCegarLoop]: Abstraction has 38584 states and 54357 transitions. [2022-01-10 02:30:37,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 38584 states and 54357 transitions. [2022-01-10 02:30:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 02:30:37,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:37,856 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:37,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 02:30:37,856 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:37,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:37,856 INFO L85 PathProgramCache]: Analyzing trace with hash 278070463, now seen corresponding path program 1 times [2022-01-10 02:30:37,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:37,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967755550] [2022-01-10 02:30:37,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:37,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:37,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:37,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967755550] [2022-01-10 02:30:37,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967755550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:37,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:37,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:30:37,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568462453] [2022-01-10 02:30:37,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:37,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:30:37,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:37,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:30:37,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:30:37,924 INFO L87 Difference]: Start difference. First operand 38584 states and 54357 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:41,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:41,314 INFO L93 Difference]: Finished difference Result 58210 states and 82826 transitions. [2022-01-10 02:30:41,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:30:41,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-01-10 02:30:41,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:41,403 INFO L225 Difference]: With dead ends: 58210 [2022-01-10 02:30:41,403 INFO L226 Difference]: Without dead ends: 58208 [2022-01-10 02:30:41,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:30:41,421 INFO L933 BasicCegarLoop]: 1688 mSDtfsCounter, 339 mSDsluCounter, 4889 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 6577 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:41,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 6577 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:41,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58208 states. [2022-01-10 02:30:43,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58208 to 39352. [2022-01-10 02:30:43,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39352 states, 39350 states have (on average 1.3976365946632783) internal successors, (54997), 39351 states have internal predecessors, (54997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:43,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39352 states to 39352 states and 54997 transitions. [2022-01-10 02:30:43,821 INFO L78 Accepts]: Start accepts. Automaton has 39352 states and 54997 transitions. Word has length 109 [2022-01-10 02:30:43,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:43,821 INFO L470 AbstractCegarLoop]: Abstraction has 39352 states and 54997 transitions. [2022-01-10 02:30:43,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:43,821 INFO L276 IsEmpty]: Start isEmpty. Operand 39352 states and 54997 transitions. [2022-01-10 02:30:43,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 02:30:43,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:43,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:43,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 02:30:43,822 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:43,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:43,823 INFO L85 PathProgramCache]: Analyzing trace with hash 171324818, now seen corresponding path program 1 times [2022-01-10 02:30:43,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:43,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398005915] [2022-01-10 02:30:43,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:43,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:43,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:43,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:43,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398005915] [2022-01-10 02:30:43,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398005915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:43,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:43,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:30:43,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568078360] [2022-01-10 02:30:43,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:43,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:43,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:43,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:43,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:43,874 INFO L87 Difference]: Start difference. First operand 39352 states and 54997 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:47,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:47,103 INFO L93 Difference]: Finished difference Result 67007 states and 95451 transitions. [2022-01-10 02:30:47,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:47,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-01-10 02:30:47,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:47,172 INFO L225 Difference]: With dead ends: 67007 [2022-01-10 02:30:47,173 INFO L226 Difference]: Without dead ends: 52156 [2022-01-10 02:30:47,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:47,200 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 1549 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:47,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:30:47,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52156 states. [2022-01-10 02:30:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52156 to 52154. [2022-01-10 02:30:50,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52154 states, 52152 states have (on average 1.4055645037582452) internal successors, (73303), 52153 states have internal predecessors, (73303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:50,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52154 states to 52154 states and 73303 transitions. [2022-01-10 02:30:50,753 INFO L78 Accepts]: Start accepts. Automaton has 52154 states and 73303 transitions. Word has length 110 [2022-01-10 02:30:50,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:30:50,754 INFO L470 AbstractCegarLoop]: Abstraction has 52154 states and 73303 transitions. [2022-01-10 02:30:50,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:50,754 INFO L276 IsEmpty]: Start isEmpty. Operand 52154 states and 73303 transitions. [2022-01-10 02:30:50,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 02:30:50,755 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:30:50,755 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:30:50,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 02:30:50,755 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:30:50,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:30:50,756 INFO L85 PathProgramCache]: Analyzing trace with hash -502556093, now seen corresponding path program 1 times [2022-01-10 02:30:50,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:30:50,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248276786] [2022-01-10 02:30:50,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:30:50,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:30:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:30:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:30:50,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:30:50,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248276786] [2022-01-10 02:30:50,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248276786] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:30:50,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:30:50,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 02:30:50,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594795834] [2022-01-10 02:30:50,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:30:50,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:30:50,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:30:50,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:30:50,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:50,805 INFO L87 Difference]: Start difference. First operand 52154 states and 73303 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:30:56,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:30:56,379 INFO L93 Difference]: Finished difference Result 75437 states and 103259 transitions. [2022-01-10 02:30:56,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:30:56,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 02:30:56,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:30:56,462 INFO L225 Difference]: With dead ends: 75437 [2022-01-10 02:30:56,462 INFO L226 Difference]: Without dead ends: 63419 [2022-01-10 02:30:56,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:30:56,486 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 928 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:30:56,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 638 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 02:30:56,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63419 states. [2022-01-10 02:31:00,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63419 to 62668. [2022-01-10 02:31:00,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62668 states, 62666 states have (on average 1.353285673251843) internal successors, (84805), 62667 states have internal predecessors, (84805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:31:00,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62668 states to 62668 states and 84805 transitions. [2022-01-10 02:31:00,194 INFO L78 Accepts]: Start accepts. Automaton has 62668 states and 84805 transitions. Word has length 125 [2022-01-10 02:31:00,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:31:00,195 INFO L470 AbstractCegarLoop]: Abstraction has 62668 states and 84805 transitions. [2022-01-10 02:31:00,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 2 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:31:00,195 INFO L276 IsEmpty]: Start isEmpty. Operand 62668 states and 84805 transitions. [2022-01-10 02:31:00,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 02:31:00,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:31:00,209 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:31:00,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 02:31:00,210 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:31:00,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:31:00,210 INFO L85 PathProgramCache]: Analyzing trace with hash 635734382, now seen corresponding path program 1 times [2022-01-10 02:31:00,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:31:00,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469897737] [2022-01-10 02:31:00,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:31:00,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:31:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:31:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-10 02:31:00,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:31:00,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469897737] [2022-01-10 02:31:00,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469897737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:31:00,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:31:00,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 02:31:00,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535700243] [2022-01-10 02:31:00,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:31:00,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:31:00,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:31:00,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:31:00,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:31:00,321 INFO L87 Difference]: Start difference. First operand 62668 states and 84805 transitions. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)