/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/eca-rers2012/Problem03_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 23:31:21,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 23:31:21,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 23:31:21,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 23:31:21,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 23:31:21,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 23:31:21,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 23:31:21,708 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 [2022-01-09 23:31:21,730 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 23:31:21,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 23:31:21,731 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 23:31:21,731 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 23:31:21,732 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 23:31:21,732 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 23:31:21,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 23:31:21,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 23:31:21,732 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 23:31:21,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 23:31:21,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 23:31:21,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 23:31:21,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 23:31:21,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 23:31:21,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 23:31:21,734 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 23:31:21,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 23:31:21,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 23:31:21,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 23:31:21,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 23:31:21,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 23:31:21,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:31:21,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 23:31:21,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 23:31:21,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 23:31:21,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 23:31:21,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 23:31:21,735 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 23:31:21,735 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 23:31:21,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 23:31:21,736 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 23:31:21,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 23:31:21,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 23:31:21,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 23:31:21,992 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 23:31:21,993 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 23:31:21,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label30.c [2022-01-09 23:31:22,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83df95dc6/ac107667ca844e888371169eb219ecf4/FLAG09ecfd785 [2022-01-09 23:31:22,656 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 23:31:22,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label30.c [2022-01-09 23:31:22,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83df95dc6/ac107667ca844e888371169eb219ecf4/FLAG09ecfd785 [2022-01-09 23:31:22,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83df95dc6/ac107667ca844e888371169eb219ecf4 [2022-01-09 23:31:22,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 23:31:22,852 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 23:31:22,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 23:31:22,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 23:31:22,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 23:31:22,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:31:22" (1/1) ... [2022-01-09 23:31:22,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c9041a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:31:22, skipping insertion in model container [2022-01-09 23:31:22,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:31:22" (1/1) ... [2022-01-09 23:31:22,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 23:31:22,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 23:31:23,387 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label30.c[57849,57862] [2022-01-09 23:31:23,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:31:23,429 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 23:31:23,581 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label30.c[57849,57862] [2022-01-09 23:31:23,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 23:31:23,607 INFO L208 MainTranslator]: Completed translation [2022-01-09 23:31:23,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:31:23 WrapperNode [2022-01-09 23:31:23,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 23:31:23,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 23:31:23,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 23:31:23,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 23:31:23,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:31:23" (1/1) ... [2022-01-09 23:31:23,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:31:23" (1/1) ... [2022-01-09 23:31:23,744 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-01-09 23:31:23,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 23:31:23,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 23:31:23,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 23:31:23,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 23:31:23,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:31:23" (1/1) ... [2022-01-09 23:31:23,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:31:23" (1/1) ... [2022-01-09 23:31:23,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:31:23" (1/1) ... [2022-01-09 23:31:23,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:31:23" (1/1) ... [2022-01-09 23:31:23,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:31:23" (1/1) ... [2022-01-09 23:31:23,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:31:23" (1/1) ... [2022-01-09 23:31:23,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:31:23" (1/1) ... [2022-01-09 23:31:23,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 23:31:23,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 23:31:23,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 23:31:23,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 23:31:23,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:31:23" (1/1) ... [2022-01-09 23:31:23,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 23:31:23,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:31:23,875 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) [2022-01-09 23:31:23,894 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 [2022-01-09 23:31:23,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 23:31:23,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 23:31:23,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 23:31:23,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 23:31:24,027 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 23:31:24,028 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 23:31:25,441 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 23:31:25,456 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 23:31:25,456 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-09 23:31:25,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:31:25 BoogieIcfgContainer [2022-01-09 23:31:25,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 23:31:25,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 23:31:25,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 23:31:25,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 23:31:25,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:31:22" (1/3) ... [2022-01-09 23:31:25,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371433bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:31:25, skipping insertion in model container [2022-01-09 23:31:25,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:31:23" (2/3) ... [2022-01-09 23:31:25,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371433bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:31:25, skipping insertion in model container [2022-01-09 23:31:25,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:31:25" (3/3) ... [2022-01-09 23:31:25,464 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label30.c [2022-01-09 23:31:25,468 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 23:31:25,468 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 23:31:25,506 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 23:31:25,512 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 [2022-01-09 23:31:25,512 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 23:31:25,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:25,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-01-09 23:31:25,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:31:25,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:31:25,540 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:31:25,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:31:25,544 INFO L85 PathProgramCache]: Analyzing trace with hash 174616531, now seen corresponding path program 1 times [2022-01-09 23:31:25,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:31:25,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481036725] [2022-01-09 23:31:25,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:25,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:31:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:31:26,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:31:26,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481036725] [2022-01-09 23:31:26,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481036725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:31:26,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:31:26,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:31:26,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397250448] [2022-01-09 23:31:26,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:31:26,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:31:26,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:31:26,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:31:26,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:31:26,053 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:27,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:31:27,050 INFO L93 Difference]: Finished difference Result 824 states and 1460 transitions. [2022-01-09 23:31:27,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:31:27,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-01-09 23:31:27,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:31:27,070 INFO L225 Difference]: With dead ends: 824 [2022-01-09 23:31:27,070 INFO L226 Difference]: Without dead ends: 444 [2022-01-09 23:31:27,077 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 [2022-01-09 23:31:27,080 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 55 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-09 23:31:27,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 238 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-09 23:31:27,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-01-09 23:31:27,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 443. [2022-01-09 23:31:27,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.418552036199095) internal successors, (627), 442 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:27,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 627 transitions. [2022-01-09 23:31:27,156 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 627 transitions. Word has length 175 [2022-01-09 23:31:27,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:31:27,158 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 627 transitions. [2022-01-09 23:31:27,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:27,159 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 627 transitions. [2022-01-09 23:31:27,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-01-09 23:31:27,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:31:27,169 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:31:27,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 23:31:27,170 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:31:27,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:31:27,171 INFO L85 PathProgramCache]: Analyzing trace with hash -93879212, now seen corresponding path program 1 times [2022-01-09 23:31:27,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:31:27,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715002996] [2022-01-09 23:31:27,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:27,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:31:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:31:27,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:31:27,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715002996] [2022-01-09 23:31:27,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715002996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:31:27,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:31:27,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:31:27,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293649763] [2022-01-09 23:31:27,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:31:27,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:31:27,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:31:27,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:31:27,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:31:27,298 INFO L87 Difference]: Start difference. First operand 443 states and 627 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:28,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:31:28,071 INFO L93 Difference]: Finished difference Result 1310 states and 1861 transitions. [2022-01-09 23:31:28,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:31:28,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2022-01-09 23:31:28,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:31:28,078 INFO L225 Difference]: With dead ends: 1310 [2022-01-09 23:31:28,079 INFO L226 Difference]: Without dead ends: 869 [2022-01-09 23:31:28,084 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 [2022-01-09 23:31:28,086 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-09 23:31:28,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 92 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-09 23:31:28,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-01-09 23:31:28,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 855. [2022-01-09 23:31:28,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.3875878220140516) internal successors, (1185), 854 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:28,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1185 transitions. [2022-01-09 23:31:28,111 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1185 transitions. Word has length 183 [2022-01-09 23:31:28,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:31:28,112 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1185 transitions. [2022-01-09 23:31:28,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:28,112 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1185 transitions. [2022-01-09 23:31:28,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-09 23:31:28,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:31:28,115 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:31:28,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-09 23:31:28,115 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:31:28,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:31:28,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1497909608, now seen corresponding path program 1 times [2022-01-09 23:31:28,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:31:28,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451689270] [2022-01-09 23:31:28,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:28,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:31:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-09 23:31:28,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:31:28,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451689270] [2022-01-09 23:31:28,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451689270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:31:28,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:31:28,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:31:28,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949401898] [2022-01-09 23:31:28,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:31:28,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:31:28,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:31:28,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:31:28,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:31:28,211 INFO L87 Difference]: Start difference. First operand 855 states and 1185 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:28,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:31:28,976 INFO L93 Difference]: Finished difference Result 2547 states and 3535 transitions. [2022-01-09 23:31:28,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:31:28,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2022-01-09 23:31:28,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:31:28,982 INFO L225 Difference]: With dead ends: 2547 [2022-01-09 23:31:28,983 INFO L226 Difference]: Without dead ends: 1694 [2022-01-09 23:31:28,984 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 [2022-01-09 23:31:28,985 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 275 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-09 23:31:28,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 227 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-09 23:31:28,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2022-01-09 23:31:29,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1687. [2022-01-09 23:31:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1686 states have (on average 1.3724792408066429) internal successors, (2314), 1686 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:29,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2314 transitions. [2022-01-09 23:31:29,016 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2314 transitions. Word has length 192 [2022-01-09 23:31:29,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:31:29,016 INFO L470 AbstractCegarLoop]: Abstraction has 1687 states and 2314 transitions. [2022-01-09 23:31:29,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 2 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:29,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2314 transitions. [2022-01-09 23:31:29,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-01-09 23:31:29,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:31:29,022 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:31:29,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-09 23:31:29,023 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:31:29,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:31:29,023 INFO L85 PathProgramCache]: Analyzing trace with hash 800099661, now seen corresponding path program 1 times [2022-01-09 23:31:29,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:31:29,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778359723] [2022-01-09 23:31:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:29,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:31:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:31:29,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:31:29,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778359723] [2022-01-09 23:31:29,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778359723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:31:29,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:31:29,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:31:29,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816707486] [2022-01-09 23:31:29,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:31:29,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:31:29,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:31:29,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:31:29,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:31:29,111 INFO L87 Difference]: Start difference. First operand 1687 states and 2314 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:29,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:31:29,833 INFO L93 Difference]: Finished difference Result 4190 states and 5944 transitions. [2022-01-09 23:31:29,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:31:29,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2022-01-09 23:31:29,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:31:29,842 INFO L225 Difference]: With dead ends: 4190 [2022-01-09 23:31:29,842 INFO L226 Difference]: Without dead ends: 2505 [2022-01-09 23:31:29,845 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 [2022-01-09 23:31:29,846 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 236 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-09 23:31:29,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 405 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-09 23:31:29,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2022-01-09 23:31:29,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2502. [2022-01-09 23:31:29,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2501 states have (on average 1.3102758896441424) internal successors, (3277), 2501 states have internal predecessors, (3277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 3277 transitions. [2022-01-09 23:31:29,892 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 3277 transitions. Word has length 195 [2022-01-09 23:31:29,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:31:29,892 INFO L470 AbstractCegarLoop]: Abstraction has 2502 states and 3277 transitions. [2022-01-09 23:31:29,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 3277 transitions. [2022-01-09 23:31:29,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-01-09 23:31:29,897 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:31:29,897 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:31:29,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-09 23:31:29,898 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:31:29,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:31:29,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1457983073, now seen corresponding path program 1 times [2022-01-09 23:31:29,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:31:29,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123460773] [2022-01-09 23:31:29,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:29,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:31:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:29,978 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:31:29,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:31:29,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123460773] [2022-01-09 23:31:29,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123460773] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:31:29,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:31:29,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:31:29,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353801650] [2022-01-09 23:31:29,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:31:29,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:31:29,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:31:29,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:31:29,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:31:29,980 INFO L87 Difference]: Start difference. First operand 2502 states and 3277 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:30,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:31:30,655 INFO L93 Difference]: Finished difference Result 5827 states and 7690 transitions. [2022-01-09 23:31:30,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:31:30,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2022-01-09 23:31:30,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:31:30,668 INFO L225 Difference]: With dead ends: 5827 [2022-01-09 23:31:30,669 INFO L226 Difference]: Without dead ends: 3327 [2022-01-09 23:31:30,674 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 [2022-01-09 23:31:30,679 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-09 23:31:30,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 364 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-09 23:31:30,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3327 states. [2022-01-09 23:31:30,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3327 to 3317. [2022-01-09 23:31:30,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3317 states, 3316 states have (on average 1.2831724969843186) internal successors, (4255), 3316 states have internal predecessors, (4255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:30,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 4255 transitions. [2022-01-09 23:31:30,737 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 4255 transitions. Word has length 203 [2022-01-09 23:31:30,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:31:30,737 INFO L470 AbstractCegarLoop]: Abstraction has 3317 states and 4255 transitions. [2022-01-09 23:31:30,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:30,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 4255 transitions. [2022-01-09 23:31:30,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-01-09 23:31:30,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:31:30,743 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:31:30,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-09 23:31:30,744 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:31:30,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:31:30,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1450768731, now seen corresponding path program 1 times [2022-01-09 23:31:30,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:31:30,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395450627] [2022-01-09 23:31:30,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:30,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:31:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:31:30,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:31:30,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395450627] [2022-01-09 23:31:30,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395450627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:31:30,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:31:30,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:31:30,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51737330] [2022-01-09 23:31:30,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:31:30,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:31:30,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:31:30,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:31:30,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:31:30,837 INFO L87 Difference]: Start difference. First operand 3317 states and 4255 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:31,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:31:31,587 INFO L93 Difference]: Finished difference Result 9081 states and 11775 transitions. [2022-01-09 23:31:31,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:31:31,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2022-01-09 23:31:31,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:31:31,609 INFO L225 Difference]: With dead ends: 9081 [2022-01-09 23:31:31,609 INFO L226 Difference]: Without dead ends: 5766 [2022-01-09 23:31:31,614 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 [2022-01-09 23:31:31,617 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 202 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-09 23:31:31,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 386 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-09 23:31:31,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5766 states. [2022-01-09 23:31:31,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5766 to 5760. [2022-01-09 23:31:31,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5760 states, 5759 states have (on average 1.2401458586560166) internal successors, (7142), 5759 states have internal predecessors, (7142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:31,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5760 states to 5760 states and 7142 transitions. [2022-01-09 23:31:31,724 INFO L78 Accepts]: Start accepts. Automaton has 5760 states and 7142 transitions. Word has length 210 [2022-01-09 23:31:31,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:31:31,725 INFO L470 AbstractCegarLoop]: Abstraction has 5760 states and 7142 transitions. [2022-01-09 23:31:31,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:31,726 INFO L276 IsEmpty]: Start isEmpty. Operand 5760 states and 7142 transitions. [2022-01-09 23:31:31,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-01-09 23:31:31,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:31:31,736 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:31:31,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-09 23:31:31,737 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:31:31,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:31:31,737 INFO L85 PathProgramCache]: Analyzing trace with hash 543920742, now seen corresponding path program 1 times [2022-01-09 23:31:31,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:31:31,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779560615] [2022-01-09 23:31:31,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:31,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:31:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:31:31,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:31:31,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779560615] [2022-01-09 23:31:31,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779560615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:31:31,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:31:31,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:31:31,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113195120] [2022-01-09 23:31:31,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:31:31,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:31:31,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:31:31,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:31:31,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:31:31,853 INFO L87 Difference]: Start difference. First operand 5760 states and 7142 transitions. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:33,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:31:33,003 INFO L93 Difference]: Finished difference Result 11544 states and 14334 transitions. [2022-01-09 23:31:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:31:33,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2022-01-09 23:31:33,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:31:33,022 INFO L225 Difference]: With dead ends: 11544 [2022-01-09 23:31:33,023 INFO L226 Difference]: Without dead ends: 5786 [2022-01-09 23:31:33,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:31:33,030 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 407 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:31:33,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 199 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-09 23:31:33,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2022-01-09 23:31:33,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 4948. [2022-01-09 23:31:33,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4948 states, 4947 states have (on average 1.2460076814230847) internal successors, (6164), 4947 states have internal predecessors, (6164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4948 states to 4948 states and 6164 transitions. [2022-01-09 23:31:33,124 INFO L78 Accepts]: Start accepts. Automaton has 4948 states and 6164 transitions. Word has length 219 [2022-01-09 23:31:33,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:31:33,124 INFO L470 AbstractCegarLoop]: Abstraction has 4948 states and 6164 transitions. [2022-01-09 23:31:33,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:33,124 INFO L276 IsEmpty]: Start isEmpty. Operand 4948 states and 6164 transitions. [2022-01-09 23:31:33,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-01-09 23:31:33,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:31:33,133 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:31:33,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-09 23:31:33,134 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:31:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:31:33,135 INFO L85 PathProgramCache]: Analyzing trace with hash 659726089, now seen corresponding path program 1 times [2022-01-09 23:31:33,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:31:33,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287081487] [2022-01-09 23:31:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:33,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:31:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-09 23:31:33,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:31:33,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287081487] [2022-01-09 23:31:33,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287081487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:31:33,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:31:33,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:31:33,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510785689] [2022-01-09 23:31:33,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:31:33,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:31:33,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:31:33,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:31:33,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:31:33,215 INFO L87 Difference]: Start difference. First operand 4948 states and 6164 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:33,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:31:33,898 INFO L93 Difference]: Finished difference Result 14393 states and 17935 transitions. [2022-01-09 23:31:33,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:31:33,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2022-01-09 23:31:33,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:31:33,928 INFO L225 Difference]: With dead ends: 14393 [2022-01-09 23:31:33,928 INFO L226 Difference]: Without dead ends: 9447 [2022-01-09 23:31:33,937 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 [2022-01-09 23:31:33,938 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 218 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-09 23:31:33,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 196 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-09 23:31:33,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9447 states. [2022-01-09 23:31:34,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9447 to 9436. [2022-01-09 23:31:34,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9436 states, 9435 states have (on average 1.2218335983041866) internal successors, (11528), 9435 states have internal predecessors, (11528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9436 states to 9436 states and 11528 transitions. [2022-01-09 23:31:34,145 INFO L78 Accepts]: Start accepts. Automaton has 9436 states and 11528 transitions. Word has length 223 [2022-01-09 23:31:34,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:31:34,145 INFO L470 AbstractCegarLoop]: Abstraction has 9436 states and 11528 transitions. [2022-01-09 23:31:34,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:34,146 INFO L276 IsEmpty]: Start isEmpty. Operand 9436 states and 11528 transitions. [2022-01-09 23:31:34,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-01-09 23:31:34,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:31:34,161 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 23:31:34,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-09 23:31:34,161 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:31:34,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:31:34,164 INFO L85 PathProgramCache]: Analyzing trace with hash 890126555, now seen corresponding path program 1 times [2022-01-09 23:31:34,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:31:34,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103335234] [2022-01-09 23:31:34,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:34,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:31:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:34,280 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-09 23:31:34,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:31:34,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103335234] [2022-01-09 23:31:34,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103335234] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:31:34,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161929126] [2022-01-09 23:31:34,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:34,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:31:34,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:31:34,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:31:34,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 23:31:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:34,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-09 23:31:34,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:31:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 56 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:31:34,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 23:31:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 56 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:31:35,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161929126] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 23:31:35,330 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 23:31:35,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 6 [2022-01-09 23:31:35,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777230719] [2022-01-09 23:31:35,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 23:31:35,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-09 23:31:35,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:31:35,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-09 23:31:35,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-09 23:31:35,337 INFO L87 Difference]: Start difference. First operand 9436 states and 11528 transitions. Second operand has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:38,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:31:38,886 INFO L93 Difference]: Finished difference Result 61772 states and 76379 transitions. [2022-01-09 23:31:38,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-09 23:31:38,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 226 [2022-01-09 23:31:38,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:31:38,999 INFO L225 Difference]: With dead ends: 61772 [2022-01-09 23:31:38,999 INFO L226 Difference]: Without dead ends: 52541 [2022-01-09 23:31:39,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-01-09 23:31:39,023 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 2651 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 3778 mSolverCounterSat, 1227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2651 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 5005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1227 IncrementalHoareTripleChecker+Valid, 3778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-09 23:31:39,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2651 Valid, 407 Invalid, 5005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1227 Valid, 3778 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-09 23:31:39,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52541 states. [2022-01-09 23:31:39,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52541 to 51667. [2022-01-09 23:31:39,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51667 states, 51666 states have (on average 1.178066813765339) internal successors, (60866), 51666 states have internal predecessors, (60866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:39,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51667 states to 51667 states and 60866 transitions. [2022-01-09 23:31:39,996 INFO L78 Accepts]: Start accepts. Automaton has 51667 states and 60866 transitions. Word has length 226 [2022-01-09 23:31:39,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:31:39,996 INFO L470 AbstractCegarLoop]: Abstraction has 51667 states and 60866 transitions. [2022-01-09 23:31:39,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:39,996 INFO L276 IsEmpty]: Start isEmpty. Operand 51667 states and 60866 transitions. [2022-01-09 23:31:40,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-01-09 23:31:40,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:31:40,037 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-09 23:31:40,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-09 23:31:40,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:31:40,260 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:31:40,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:31:40,261 INFO L85 PathProgramCache]: Analyzing trace with hash 26999431, now seen corresponding path program 1 times [2022-01-09 23:31:40,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:31:40,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977241870] [2022-01-09 23:31:40,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:40,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:31:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:31:40,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:31:40,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977241870] [2022-01-09 23:31:40,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977241870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:31:40,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:31:40,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:31:40,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382707958] [2022-01-09 23:31:40,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:31:40,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:31:40,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:31:40,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:31:40,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:31:40,491 INFO L87 Difference]: Start difference. First operand 51667 states and 60866 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:41,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:31:41,372 INFO L93 Difference]: Finished difference Result 102113 states and 120353 transitions. [2022-01-09 23:31:41,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:31:41,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2022-01-09 23:31:41,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:31:41,485 INFO L225 Difference]: With dead ends: 102113 [2022-01-09 23:31:41,486 INFO L226 Difference]: Without dead ends: 51057 [2022-01-09 23:31:41,523 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 [2022-01-09 23:31:41,523 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 133 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-09 23:31:41,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 196 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-09 23:31:41,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51057 states. [2022-01-09 23:31:42,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51057 to 51056. [2022-01-09 23:31:42,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51056 states, 51055 states have (on average 1.1772206444030946) internal successors, (60103), 51055 states have internal predecessors, (60103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:42,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51056 states to 51056 states and 60103 transitions. [2022-01-09 23:31:42,533 INFO L78 Accepts]: Start accepts. Automaton has 51056 states and 60103 transitions. Word has length 249 [2022-01-09 23:31:42,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:31:42,534 INFO L470 AbstractCegarLoop]: Abstraction has 51056 states and 60103 transitions. [2022-01-09 23:31:42,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:42,534 INFO L276 IsEmpty]: Start isEmpty. Operand 51056 states and 60103 transitions. [2022-01-09 23:31:42,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-01-09 23:31:42,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:31:42,605 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-09 23:31:42,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-09 23:31:42,605 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:31:42,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:31:42,606 INFO L85 PathProgramCache]: Analyzing trace with hash -213655855, now seen corresponding path program 1 times [2022-01-09 23:31:42,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:31:42,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151551677] [2022-01-09 23:31:42,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:42,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:31:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 23:31:42,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:31:42,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151551677] [2022-01-09 23:31:42,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151551677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:31:42,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:31:42,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:31:42,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675551224] [2022-01-09 23:31:42,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:31:42,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:31:42,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:31:42,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:31:42,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:31:42,736 INFO L87 Difference]: Start difference. First operand 51056 states and 60103 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 2 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:43,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:31:43,772 INFO L93 Difference]: Finished difference Result 122493 states and 144278 transitions. [2022-01-09 23:31:43,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:31:43,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 2 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2022-01-09 23:31:43,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:31:43,883 INFO L225 Difference]: With dead ends: 122493 [2022-01-09 23:31:43,884 INFO L226 Difference]: Without dead ends: 72454 [2022-01-09 23:31:44,046 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 [2022-01-09 23:31:44,047 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 188 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-09 23:31:44,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 219 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-09 23:31:44,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72454 states. [2022-01-09 23:31:44,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72454 to 72036. [2022-01-09 23:31:44,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72036 states, 72035 states have (on average 1.169945165544527) internal successors, (84277), 72035 states have internal predecessors, (84277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:45,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72036 states to 72036 states and 84277 transitions. [2022-01-09 23:31:45,060 INFO L78 Accepts]: Start accepts. Automaton has 72036 states and 84277 transitions. Word has length 253 [2022-01-09 23:31:45,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:31:45,060 INFO L470 AbstractCegarLoop]: Abstraction has 72036 states and 84277 transitions. [2022-01-09 23:31:45,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 2 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:45,061 INFO L276 IsEmpty]: Start isEmpty. Operand 72036 states and 84277 transitions. [2022-01-09 23:31:45,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-01-09 23:31:45,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:31:45,111 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-09 23:31:45,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-09 23:31:45,112 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:31:45,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:31:45,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1780262992, now seen corresponding path program 1 times [2022-01-09 23:31:45,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:31:45,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061116819] [2022-01-09 23:31:45,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:45,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:31:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:45,215 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-09 23:31:45,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:31:45,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061116819] [2022-01-09 23:31:45,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061116819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:31:45,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:31:45,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:31:45,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25506000] [2022-01-09 23:31:45,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:31:45,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:31:45,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:31:45,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:31:45,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:31:45,217 INFO L87 Difference]: Start difference. First operand 72036 states and 84277 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:46,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:31:46,425 INFO L93 Difference]: Finished difference Result 147986 states and 173071 transitions. [2022-01-09 23:31:46,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:31:46,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 283 [2022-01-09 23:31:46,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:31:46,558 INFO L225 Difference]: With dead ends: 147986 [2022-01-09 23:31:46,558 INFO L226 Difference]: Without dead ends: 83678 [2022-01-09 23:31:46,605 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 [2022-01-09 23:31:46,615 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 241 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-09 23:31:46,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 219 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-09 23:31:46,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83678 states. [2022-01-09 23:31:47,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83678 to 83654. [2022-01-09 23:31:47,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83654 states, 83653 states have (on average 1.1674297395192044) internal successors, (97659), 83653 states have internal predecessors, (97659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:47,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83654 states to 83654 states and 97659 transitions. [2022-01-09 23:31:47,726 INFO L78 Accepts]: Start accepts. Automaton has 83654 states and 97659 transitions. Word has length 283 [2022-01-09 23:31:47,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:31:47,726 INFO L470 AbstractCegarLoop]: Abstraction has 83654 states and 97659 transitions. [2022-01-09 23:31:47,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:47,727 INFO L276 IsEmpty]: Start isEmpty. Operand 83654 states and 97659 transitions. [2022-01-09 23:31:47,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-01-09 23:31:47,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:31:47,780 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-09 23:31:47,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-09 23:31:47,781 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:31:47,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:31:47,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1542055283, now seen corresponding path program 1 times [2022-01-09 23:31:47,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:31:47,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972155421] [2022-01-09 23:31:47,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:47,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:31:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:47,902 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-09 23:31:47,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:31:47,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972155421] [2022-01-09 23:31:47,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972155421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:31:47,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:31:47,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:31:47,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759859364] [2022-01-09 23:31:47,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:31:47,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:31:47,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:31:47,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:31:47,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:31:47,904 INFO L87 Difference]: Start difference. First operand 83654 states and 97659 transitions. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:49,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:31:49,565 INFO L93 Difference]: Finished difference Result 185337 states and 216498 transitions. [2022-01-09 23:31:49,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:31:49,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 290 [2022-01-09 23:31:49,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:31:49,711 INFO L225 Difference]: With dead ends: 185337 [2022-01-09 23:31:49,711 INFO L226 Difference]: Without dead ends: 103717 [2022-01-09 23:31:49,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:31:49,764 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 353 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-09 23:31:49,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 169 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-09 23:31:49,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103717 states. [2022-01-09 23:31:50,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103717 to 94863. [2022-01-09 23:31:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94863 states, 94862 states have (on average 1.1641015369694925) internal successors, (110429), 94862 states have internal predecessors, (110429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:51,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94863 states to 94863 states and 110429 transitions. [2022-01-09 23:31:51,229 INFO L78 Accepts]: Start accepts. Automaton has 94863 states and 110429 transitions. Word has length 290 [2022-01-09 23:31:51,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:31:51,229 INFO L470 AbstractCegarLoop]: Abstraction has 94863 states and 110429 transitions. [2022-01-09 23:31:51,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:51,230 INFO L276 IsEmpty]: Start isEmpty. Operand 94863 states and 110429 transitions. [2022-01-09 23:31:51,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-01-09 23:31:51,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:31:51,277 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-09 23:31:51,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-09 23:31:51,277 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:31:51,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:31:51,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1500203540, now seen corresponding path program 1 times [2022-01-09 23:31:51,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:31:51,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139645021] [2022-01-09 23:31:51,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:51,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:31:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-09 23:31:51,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:31:51,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139645021] [2022-01-09 23:31:51,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139645021] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:31:51,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:31:51,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:31:51,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418241391] [2022-01-09 23:31:51,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:31:51,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:31:51,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:31:51,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:31:51,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:31:51,398 INFO L87 Difference]: Start difference. First operand 94863 states and 110429 transitions. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:52,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:31:52,449 INFO L93 Difference]: Finished difference Result 167798 states and 196240 transitions. [2022-01-09 23:31:52,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:31:52,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2022-01-09 23:31:52,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:31:52,523 INFO L225 Difference]: With dead ends: 167798 [2022-01-09 23:31:52,523 INFO L226 Difference]: Without dead ends: 68067 [2022-01-09 23:31:52,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:31:52,569 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 695 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-09 23:31:52,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 45 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-09 23:31:52,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68067 states. [2022-01-09 23:31:53,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68067 to 67833. [2022-01-09 23:31:53,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67833 states, 67832 states have (on average 1.0934367260290128) internal successors, (74170), 67832 states have internal predecessors, (74170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:53,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67833 states to 67833 states and 74170 transitions. [2022-01-09 23:31:53,585 INFO L78 Accepts]: Start accepts. Automaton has 67833 states and 74170 transitions. Word has length 291 [2022-01-09 23:31:53,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:31:53,585 INFO L470 AbstractCegarLoop]: Abstraction has 67833 states and 74170 transitions. [2022-01-09 23:31:53,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:53,585 INFO L276 IsEmpty]: Start isEmpty. Operand 67833 states and 74170 transitions. [2022-01-09 23:31:53,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-01-09 23:31:53,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:31:53,604 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-09 23:31:53,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-09 23:31:53,604 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:31:53,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:31:53,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1717943634, now seen corresponding path program 1 times [2022-01-09 23:31:53,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:31:53,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682701313] [2022-01-09 23:31:53,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:53,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:31:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-09 23:31:53,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:31:53,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682701313] [2022-01-09 23:31:53,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682701313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:31:53,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:31:53,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:31:53,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975126686] [2022-01-09 23:31:53,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:31:53,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:31:53,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:31:53,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:31:53,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:31:53,715 INFO L87 Difference]: Start difference. First operand 67833 states and 74170 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:31:54,604 INFO L93 Difference]: Finished difference Result 130741 states and 143823 transitions. [2022-01-09 23:31:54,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:31:54,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 296 [2022-01-09 23:31:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:31:54,676 INFO L225 Difference]: With dead ends: 130741 [2022-01-09 23:31:54,676 INFO L226 Difference]: Without dead ends: 64331 [2022-01-09 23:31:54,712 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 [2022-01-09 23:31:54,713 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 151 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-09 23:31:54,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 122 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-09 23:31:54,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64331 states. [2022-01-09 23:31:55,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64331 to 63316. [2022-01-09 23:31:55,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63316 states, 63315 states have (on average 1.0763168285556346) internal successors, (68147), 63315 states have internal predecessors, (68147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:55,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63316 states to 63316 states and 68147 transitions. [2022-01-09 23:31:55,693 INFO L78 Accepts]: Start accepts. Automaton has 63316 states and 68147 transitions. Word has length 296 [2022-01-09 23:31:55,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:31:55,694 INFO L470 AbstractCegarLoop]: Abstraction has 63316 states and 68147 transitions. [2022-01-09 23:31:55,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:55,694 INFO L276 IsEmpty]: Start isEmpty. Operand 63316 states and 68147 transitions. [2022-01-09 23:31:55,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-01-09 23:31:55,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:31:55,709 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-09 23:31:55,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-09 23:31:55,710 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:31:55,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:31:55,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1588882839, now seen corresponding path program 1 times [2022-01-09 23:31:55,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:31:55,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89503333] [2022-01-09 23:31:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:55,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:31:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:55,800 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-09 23:31:55,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:31:55,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89503333] [2022-01-09 23:31:55,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89503333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:31:55,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:31:55,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:31:55,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950170156] [2022-01-09 23:31:55,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:31:55,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:31:55,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:31:55,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:31:55,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:31:55,803 INFO L87 Difference]: Start difference. First operand 63316 states and 68147 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:56,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:31:56,739 INFO L93 Difference]: Finished difference Result 145781 states and 157454 transitions. [2022-01-09 23:31:56,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:31:56,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 303 [2022-01-09 23:31:56,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:31:56,826 INFO L225 Difference]: With dead ends: 145781 [2022-01-09 23:31:56,826 INFO L226 Difference]: Without dead ends: 82467 [2022-01-09 23:31:56,853 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 [2022-01-09 23:31:56,854 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 207 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-09 23:31:56,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 136 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-09 23:31:56,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82467 states. [2022-01-09 23:31:57,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82467 to 78991. [2022-01-09 23:31:57,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78991 states, 78990 states have (on average 1.0816559058108621) internal successors, (85440), 78990 states have internal predecessors, (85440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:57,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78991 states to 78991 states and 85440 transitions. [2022-01-09 23:31:57,889 INFO L78 Accepts]: Start accepts. Automaton has 78991 states and 85440 transitions. Word has length 303 [2022-01-09 23:31:57,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:31:57,889 INFO L470 AbstractCegarLoop]: Abstraction has 78991 states and 85440 transitions. [2022-01-09 23:31:57,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 78991 states and 85440 transitions. [2022-01-09 23:31:57,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-01-09 23:31:57,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:31:57,924 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-09 23:31:57,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-09 23:31:57,925 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:31:57,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:31:57,925 INFO L85 PathProgramCache]: Analyzing trace with hash -441816732, now seen corresponding path program 1 times [2022-01-09 23:31:57,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:31:57,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374611860] [2022-01-09 23:31:57,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:57,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:31:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:58,074 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 190 proven. 9 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-09 23:31:58,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:31:58,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374611860] [2022-01-09 23:31:58,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374611860] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:31:58,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379203469] [2022-01-09 23:31:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:31:58,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:31:58,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:31:58,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:31:58,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-09 23:31:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:31:58,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-09 23:31:58,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:31:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-09 23:31:58,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:31:58,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379203469] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:31:58,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:31:58,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-01-09 23:31:58,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25223656] [2022-01-09 23:31:58,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:31:58,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:31:58,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:31:58,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:31:58,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-09 23:31:58,932 INFO L87 Difference]: Start difference. First operand 78991 states and 85440 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:31:59,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:31:59,719 INFO L93 Difference]: Finished difference Result 155358 states and 168152 transitions. [2022-01-09 23:31:59,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:31:59,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 354 [2022-01-09 23:31:59,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:31:59,815 INFO L225 Difference]: With dead ends: 155358 [2022-01-09 23:31:59,816 INFO L226 Difference]: Without dead ends: 78196 [2022-01-09 23:31:59,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-09 23:31:59,869 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 86 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-09 23:31:59,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 272 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-09 23:31:59,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78196 states. [2022-01-09 23:32:00,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78196 to 78179. [2022-01-09 23:32:00,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78179 states, 78178 states have (on average 1.078065440405229) internal successors, (84281), 78178 states have internal predecessors, (84281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:00,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78179 states to 78179 states and 84281 transitions. [2022-01-09 23:32:00,949 INFO L78 Accepts]: Start accepts. Automaton has 78179 states and 84281 transitions. Word has length 354 [2022-01-09 23:32:00,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:00,950 INFO L470 AbstractCegarLoop]: Abstraction has 78179 states and 84281 transitions. [2022-01-09 23:32:00,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:00,950 INFO L276 IsEmpty]: Start isEmpty. Operand 78179 states and 84281 transitions. [2022-01-09 23:32:00,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-01-09 23:32:00,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:00,976 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-09 23:32:00,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-09 23:32:01,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-09 23:32:01,177 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:01,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:01,178 INFO L85 PathProgramCache]: Analyzing trace with hash -393080461, now seen corresponding path program 1 times [2022-01-09 23:32:01,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:01,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733694322] [2022-01-09 23:32:01,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:01,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:01,307 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 215 proven. 29 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-01-09 23:32:01,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:01,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733694322] [2022-01-09 23:32:01,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733694322] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:32:01,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562359178] [2022-01-09 23:32:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:01,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:32:01,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:32:01,309 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:32:01,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-09 23:32:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:01,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-09 23:32:01,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:32:02,101 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-01-09 23:32:02,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:32:02,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562359178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:02,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:32:02,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-01-09 23:32:02,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49523043] [2022-01-09 23:32:02,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:02,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:02,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:02,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:02,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:32:02,104 INFO L87 Difference]: Start difference. First operand 78179 states and 84281 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:02,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:02,773 INFO L93 Difference]: Finished difference Result 129458 states and 139659 transitions. [2022-01-09 23:32:02,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:02,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 362 [2022-01-09 23:32:02,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:02,832 INFO L225 Difference]: With dead ends: 129458 [2022-01-09 23:32:02,832 INFO L226 Difference]: Without dead ends: 50875 [2022-01-09 23:32:02,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-09 23:32:02,870 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 203 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:02,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 292 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-09 23:32:02,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50875 states. [2022-01-09 23:32:03,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50875 to 46601. [2022-01-09 23:32:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46601 states, 46600 states have (on average 1.0630257510729613) internal successors, (49537), 46600 states have internal predecessors, (49537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:03,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46601 states to 46601 states and 49537 transitions. [2022-01-09 23:32:03,749 INFO L78 Accepts]: Start accepts. Automaton has 46601 states and 49537 transitions. Word has length 362 [2022-01-09 23:32:03,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:03,750 INFO L470 AbstractCegarLoop]: Abstraction has 46601 states and 49537 transitions. [2022-01-09 23:32:03,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:03,750 INFO L276 IsEmpty]: Start isEmpty. Operand 46601 states and 49537 transitions. [2022-01-09 23:32:03,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-01-09 23:32:03,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:03,777 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-09 23:32:03,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-09 23:32:03,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-09 23:32:03,977 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:03,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:03,978 INFO L85 PathProgramCache]: Analyzing trace with hash 67321743, now seen corresponding path program 1 times [2022-01-09 23:32:03,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:03,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699483300] [2022-01-09 23:32:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:03,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-01-09 23:32:04,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:04,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699483300] [2022-01-09 23:32:04,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699483300] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:04,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:32:04,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 23:32:04,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713324423] [2022-01-09 23:32:04,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:04,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:04,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:04,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:04,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 23:32:04,122 INFO L87 Difference]: Start difference. First operand 46601 states and 49537 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:04,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:04,712 INFO L93 Difference]: Finished difference Result 91780 states and 97615 transitions. [2022-01-09 23:32:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:04,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 392 [2022-01-09 23:32:04,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:04,752 INFO L225 Difference]: With dead ends: 91780 [2022-01-09 23:32:04,753 INFO L226 Difference]: Without dead ends: 46602 [2022-01-09 23:32:04,777 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 [2022-01-09 23:32:04,777 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 70 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:04,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 116 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-09 23:32:04,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46602 states. [2022-01-09 23:32:05,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46602 to 46601. [2022-01-09 23:32:05,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46601 states, 46600 states have (on average 1.0628969957081544) internal successors, (49531), 46600 states have internal predecessors, (49531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:05,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46601 states to 46601 states and 49531 transitions. [2022-01-09 23:32:05,507 INFO L78 Accepts]: Start accepts. Automaton has 46601 states and 49531 transitions. Word has length 392 [2022-01-09 23:32:05,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:05,508 INFO L470 AbstractCegarLoop]: Abstraction has 46601 states and 49531 transitions. [2022-01-09 23:32:05,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:05,508 INFO L276 IsEmpty]: Start isEmpty. Operand 46601 states and 49531 transitions. [2022-01-09 23:32:05,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2022-01-09 23:32:05,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:05,535 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-09 23:32:05,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-09 23:32:05,535 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:05,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:05,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1353325147, now seen corresponding path program 1 times [2022-01-09 23:32:05,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:05,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875095487] [2022-01-09 23:32:05,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:05,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 224 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-01-09 23:32:05,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:05,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875095487] [2022-01-09 23:32:05,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875095487] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:32:05,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569418908] [2022-01-09 23:32:05,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:05,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:32:05,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:32:05,716 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:32:05,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-09 23:32:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:05,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-09 23:32:05,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:32:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-09 23:32:06,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:32:06,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569418908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:06,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:32:06,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-01-09 23:32:06,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914980561] [2022-01-09 23:32:06,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:06,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:06,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:06,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:06,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:32:06,526 INFO L87 Difference]: Start difference. First operand 46601 states and 49531 transitions. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:07,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:07,265 INFO L93 Difference]: Finished difference Result 93830 states and 99860 transitions. [2022-01-09 23:32:07,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:07,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 400 [2022-01-09 23:32:07,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:07,320 INFO L225 Difference]: With dead ends: 93830 [2022-01-09 23:32:07,320 INFO L226 Difference]: Without dead ends: 48652 [2022-01-09 23:32:07,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:32:07,345 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 135 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:07,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 332 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-09 23:32:07,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48652 states. [2022-01-09 23:32:07,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48652 to 45579. [2022-01-09 23:32:07,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45579 states, 45578 states have (on average 1.0597876168326825) internal successors, (48303), 45578 states have internal predecessors, (48303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:07,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45579 states to 45579 states and 48303 transitions. [2022-01-09 23:32:07,908 INFO L78 Accepts]: Start accepts. Automaton has 45579 states and 48303 transitions. Word has length 400 [2022-01-09 23:32:07,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:07,908 INFO L470 AbstractCegarLoop]: Abstraction has 45579 states and 48303 transitions. [2022-01-09 23:32:07,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:07,909 INFO L276 IsEmpty]: Start isEmpty. Operand 45579 states and 48303 transitions. [2022-01-09 23:32:07,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-01-09 23:32:07,945 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:07,945 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-01-09 23:32:07,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-09 23:32:08,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:32:08,160 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:08,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:08,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2084760706, now seen corresponding path program 1 times [2022-01-09 23:32:08,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:08,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111792043] [2022-01-09 23:32:08,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:08,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 333 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-01-09 23:32:08,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:08,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111792043] [2022-01-09 23:32:08,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111792043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:08,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 23:32:08,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 23:32:08,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267723955] [2022-01-09 23:32:08,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:08,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-09 23:32:08,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:08,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-09 23:32:08,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:32:08,318 INFO L87 Difference]: Start difference. First operand 45579 states and 48303 transitions. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:09,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:09,303 INFO L93 Difference]: Finished difference Result 109064 states and 115591 transitions. [2022-01-09 23:32:09,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-09 23:32:09,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 403 [2022-01-09 23:32:09,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:09,371 INFO L225 Difference]: With dead ends: 109064 [2022-01-09 23:32:09,371 INFO L226 Difference]: Without dead ends: 64705 [2022-01-09 23:32:09,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-09 23:32:09,391 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 388 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:09,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 386 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-09 23:32:09,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64705 states. [2022-01-09 23:32:10,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64705 to 63683. [2022-01-09 23:32:10,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63683 states, 63682 states have (on average 1.0586979052165446) internal successors, (67420), 63682 states have internal predecessors, (67420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:10,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63683 states to 63683 states and 67420 transitions. [2022-01-09 23:32:10,135 INFO L78 Accepts]: Start accepts. Automaton has 63683 states and 67420 transitions. Word has length 403 [2022-01-09 23:32:10,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:10,135 INFO L470 AbstractCegarLoop]: Abstraction has 63683 states and 67420 transitions. [2022-01-09 23:32:10,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:10,135 INFO L276 IsEmpty]: Start isEmpty. Operand 63683 states and 67420 transitions. [2022-01-09 23:32:10,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-01-09 23:32:10,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:10,165 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-01-09 23:32:10,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-09 23:32:10,165 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:10,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:10,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1428899627, now seen corresponding path program 1 times [2022-01-09 23:32:10,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:10,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575300544] [2022-01-09 23:32:10,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:10,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:10,820 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 290 proven. 58 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-01-09 23:32:10,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:10,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575300544] [2022-01-09 23:32:10,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575300544] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:32:10,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746391347] [2022-01-09 23:32:10,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:10,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:32:10,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:32:10,823 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:32:10,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-09 23:32:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:11,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-09 23:32:11,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:32:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 368 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-01-09 23:32:11,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:32:11,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746391347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:11,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:32:11,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-01-09 23:32:11,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552909971] [2022-01-09 23:32:11,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:11,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:11,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:11,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:11,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-09 23:32:11,533 INFO L87 Difference]: Start difference. First operand 63683 states and 67420 transitions. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:12,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:12,219 INFO L93 Difference]: Finished difference Result 126140 states and 133547 transitions. [2022-01-09 23:32:12,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:12,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 408 [2022-01-09 23:32:12,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:12,458 INFO L225 Difference]: With dead ends: 126140 [2022-01-09 23:32:12,459 INFO L226 Difference]: Without dead ends: 63270 [2022-01-09 23:32:12,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-09 23:32:12,482 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 161 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:12,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 95 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-09 23:32:12,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63270 states. [2022-01-09 23:32:13,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63270 to 60217. [2022-01-09 23:32:13,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60217 states, 60216 states have (on average 1.0528264912979939) internal successors, (63397), 60216 states have internal predecessors, (63397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60217 states to 60217 states and 63397 transitions. [2022-01-09 23:32:13,163 INFO L78 Accepts]: Start accepts. Automaton has 60217 states and 63397 transitions. Word has length 408 [2022-01-09 23:32:13,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:13,163 INFO L470 AbstractCegarLoop]: Abstraction has 60217 states and 63397 transitions. [2022-01-09 23:32:13,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:13,163 INFO L276 IsEmpty]: Start isEmpty. Operand 60217 states and 63397 transitions. [2022-01-09 23:32:13,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2022-01-09 23:32:13,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 23:32:13,193 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-09 23:32:13,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-09 23:32:13,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-01-09 23:32:13,405 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 23:32:13,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 23:32:13,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2000446158, now seen corresponding path program 1 times [2022-01-09 23:32:13,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 23:32:13,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378498541] [2022-01-09 23:32:13,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:13,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 23:32:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:13,723 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 153 proven. 252 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-09 23:32:13,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 23:32:13,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378498541] [2022-01-09 23:32:13,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378498541] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 23:32:13,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059139840] [2022-01-09 23:32:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 23:32:13,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:32:13,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 23:32:13,726 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 23:32:13,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-09 23:32:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 23:32:13,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-09 23:32:13,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 23:32:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-01-09 23:32:14,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-09 23:32:14,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059139840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 23:32:14,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-09 23:32:14,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-01-09 23:32:14,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046977994] [2022-01-09 23:32:14,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 23:32:14,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 23:32:14,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 23:32:14,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 23:32:14,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-09 23:32:14,647 INFO L87 Difference]: Start difference. First operand 60217 states and 63397 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:15,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 23:32:15,305 INFO L93 Difference]: Finished difference Result 122079 states and 128707 transitions. [2022-01-09 23:32:15,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 23:32:15,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 430 [2022-01-09 23:32:15,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 23:32:15,306 INFO L225 Difference]: With dead ends: 122079 [2022-01-09 23:32:15,306 INFO L226 Difference]: Without dead ends: 0 [2022-01-09 23:32:15,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-09 23:32:15,342 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 52 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-09 23:32:15,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 312 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-09 23:32:15,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-09 23:32:15,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-09 23:32:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:15,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-09 23:32:15,343 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 430 [2022-01-09 23:32:15,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 23:32:15,344 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-09 23:32:15,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-09 23:32:15,344 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-09 23:32:15,344 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-09 23:32:15,346 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-09 23:32:15,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-09 23:32:15,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 23:32:15,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.