/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/Problem13_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:08:58,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:08:58,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:08:58,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:08:58,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 00:08:58,441 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:08:58,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:08:58,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:08:58,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:08:58,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:08:58,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:08:58,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:08:58,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:08:58,443 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:08:58,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:08:58,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:08:58,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:08:58,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:08:58,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:08:58,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:08:58,445 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:08:58,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:08:58,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:08:58,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:08:58,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:08:58,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:08:58,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:08:58,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:08:58,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:08:58,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:08:58,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:08:58,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:08:58,446 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:08:58,446 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:08:58,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:08:58,446 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:08:58,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:08:58,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:08:58,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:08:58,636 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:08:58,636 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:08:58,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label13.c [2022-01-10 00:08:58,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/296c79eac/8b70055ea02943179c6f4148f287650c/FLAG2ad0298ce [2022-01-10 00:08:59,332 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:08:59,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label13.c [2022-01-10 00:08:59,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/296c79eac/8b70055ea02943179c6f4148f287650c/FLAG2ad0298ce [2022-01-10 00:08:59,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/296c79eac/8b70055ea02943179c6f4148f287650c [2022-01-10 00:08:59,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:08:59,722 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:08:59,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:08:59,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:08:59,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:08:59,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:08:59" (1/1) ... [2022-01-10 00:08:59,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a751f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:08:59, skipping insertion in model container [2022-01-10 00:08:59,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:08:59" (1/1) ... [2022-01-10 00:08:59,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:08:59,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:09:00,056 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/Problem13_label13.c[8099,8112] [2022-01-10 00:09:00,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:09:00,728 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:09:00,752 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/Problem13_label13.c[8099,8112] [2022-01-10 00:09:01,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:09:01,144 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:09:01,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:01 WrapperNode [2022-01-10 00:09:01,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:09:01,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:09:01,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:09:01,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:09:01,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:01" (1/1) ... [2022-01-10 00:09:01,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:01" (1/1) ... [2022-01-10 00:09:01,684 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-01-10 00:09:01,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:09:01,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:09:01,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:09:01,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:09:01,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:01" (1/1) ... [2022-01-10 00:09:01,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:01" (1/1) ... [2022-01-10 00:09:01,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:01" (1/1) ... [2022-01-10 00:09:01,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:01" (1/1) ... [2022-01-10 00:09:02,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:01" (1/1) ... [2022-01-10 00:09:02,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:01" (1/1) ... [2022-01-10 00:09:02,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:01" (1/1) ... [2022-01-10 00:09:02,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:09:02,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:09:02,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:09:02,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:09:02,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:01" (1/1) ... [2022-01-10 00:09:02,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:09:02,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:09:02,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 00:09:02,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 00:09:02,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:09:02,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:09:02,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:09:02,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:09:02,313 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:09:02,314 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:09:05,507 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:09:05,520 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:09:05,521 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:09:05,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:09:05 BoogieIcfgContainer [2022-01-10 00:09:05,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:09:05,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:09:05,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:09:05,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:09:05,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:08:59" (1/3) ... [2022-01-10 00:09:05,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b716ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:09:05, skipping insertion in model container [2022-01-10 00:09:05,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:09:01" (2/3) ... [2022-01-10 00:09:05,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b716ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:09:05, skipping insertion in model container [2022-01-10 00:09:05,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:09:05" (3/3) ... [2022-01-10 00:09:05,528 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label13.c [2022-01-10 00:09:05,531 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:09:05,531 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:09:05,564 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:09:05,568 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 00:09:05,568 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:09:05,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:05,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 00:09:05,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:09:05,598 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] [2022-01-10 00:09:05,598 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:09:05,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:09:05,602 INFO L85 PathProgramCache]: Analyzing trace with hash -66916295, now seen corresponding path program 1 times [2022-01-10 00:09:05,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:09:05,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598031957] [2022-01-10 00:09:05,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:09:05,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:09:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:09:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:09:05,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:09:05,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598031957] [2022-01-10 00:09:05,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598031957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:09:05,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:09:05,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:09:05,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574788017] [2022-01-10 00:09:05,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:09:05,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:09:05,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:09:05,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:09:05,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:09:05,839 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:11,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:09:11,103 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2022-01-10 00:09:11,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:09:11,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-10 00:09:11,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:09:11,123 INFO L225 Difference]: With dead ends: 3829 [2022-01-10 00:09:11,124 INFO L226 Difference]: Without dead ends: 2664 [2022-01-10 00:09:11,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:09:11,132 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 2676 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2676 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1610 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:09:11,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2676 Valid, 1067 Invalid, 5856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1610 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-01-10 00:09:11,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2022-01-10 00:09:11,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2022-01-10 00:09:11,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2022-01-10 00:09:11,225 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 57 [2022-01-10 00:09:11,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:09:11,226 INFO L470 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2022-01-10 00:09:11,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:11,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2022-01-10 00:09:11,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-10 00:09:11,237 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:09:11,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:09:11,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:09:11,238 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:09:11,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:09:11,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1953647055, now seen corresponding path program 1 times [2022-01-10 00:09:11,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:09:11,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487551287] [2022-01-10 00:09:11,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:09:11,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:09:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:09:11,440 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-01-10 00:09:11,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:09:11,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487551287] [2022-01-10 00:09:11,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487551287] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:09:11,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:09:11,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:09:11,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122243107] [2022-01-10 00:09:11,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:09:11,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:09:11,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:09:11,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:09:11,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:09:11,443 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:14,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:09:14,342 INFO L93 Difference]: Finished difference Result 6142 states and 9712 transitions. [2022-01-10 00:09:14,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:09:14,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2022-01-10 00:09:14,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:09:14,356 INFO L225 Difference]: With dead ends: 6142 [2022-01-10 00:09:14,357 INFO L226 Difference]: Without dead ends: 4268 [2022-01-10 00:09:14,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:09:14,363 INFO L933 BasicCegarLoop]: 1039 mSDtfsCounter, 743 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:09:14,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 1188 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 00:09:14,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2022-01-10 00:09:14,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 4254. [2022-01-10 00:09:14,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4254 states, 4253 states have (on average 1.3515165765342112) internal successors, (5748), 4253 states have internal predecessors, (5748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:14,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4254 states to 4254 states and 5748 transitions. [2022-01-10 00:09:14,409 INFO L78 Accepts]: Start accepts. Automaton has 4254 states and 5748 transitions. Word has length 182 [2022-01-10 00:09:14,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:09:14,410 INFO L470 AbstractCegarLoop]: Abstraction has 4254 states and 5748 transitions. [2022-01-10 00:09:14,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:14,410 INFO L276 IsEmpty]: Start isEmpty. Operand 4254 states and 5748 transitions. [2022-01-10 00:09:14,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-01-10 00:09:14,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:09:14,412 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, 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] [2022-01-10 00:09:14,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:09:14,412 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:09:14,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:09:14,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1535774173, now seen corresponding path program 1 times [2022-01-10 00:09:14,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:09:14,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305744089] [2022-01-10 00:09:14,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:09:14,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:09:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:09:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-10 00:09:14,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:09:14,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305744089] [2022-01-10 00:09:14,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305744089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:09:14,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:09:14,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:09:14,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293510562] [2022-01-10 00:09:14,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:09:14,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:09:14,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:09:14,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:09:14,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:09:14,548 INFO L87 Difference]: Start difference. First operand 4254 states and 5748 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:17,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:09:17,269 INFO L93 Difference]: Finished difference Result 10897 states and 15274 transitions. [2022-01-10 00:09:17,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:09:17,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2022-01-10 00:09:17,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:09:17,303 INFO L225 Difference]: With dead ends: 10897 [2022-01-10 00:09:17,303 INFO L226 Difference]: Without dead ends: 7432 [2022-01-10 00:09:17,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:09:17,308 INFO L933 BasicCegarLoop]: 824 mSDtfsCounter, 905 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:09:17,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 955 Invalid, 3322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 2567 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 00:09:17,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7432 states. [2022-01-10 00:09:17,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7432 to 7426. [2022-01-10 00:09:17,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7426 states, 7425 states have (on average 1.288888888888889) internal successors, (9570), 7425 states have internal predecessors, (9570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:17,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7426 states to 7426 states and 9570 transitions. [2022-01-10 00:09:17,391 INFO L78 Accepts]: Start accepts. Automaton has 7426 states and 9570 transitions. Word has length 224 [2022-01-10 00:09:17,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:09:17,392 INFO L470 AbstractCegarLoop]: Abstraction has 7426 states and 9570 transitions. [2022-01-10 00:09:17,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:17,392 INFO L276 IsEmpty]: Start isEmpty. Operand 7426 states and 9570 transitions. [2022-01-10 00:09:17,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-01-10 00:09:17,395 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:09:17,395 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, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:09:17,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:09:17,395 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:09:17,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:09:17,396 INFO L85 PathProgramCache]: Analyzing trace with hash -424268410, now seen corresponding path program 1 times [2022-01-10 00:09:17,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:09:17,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462206205] [2022-01-10 00:09:17,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:09:17,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:09:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:09:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-10 00:09:17,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:09:17,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462206205] [2022-01-10 00:09:17,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462206205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:09:17,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:09:17,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:09:17,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509678342] [2022-01-10 00:09:17,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:09:17,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:09:17,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:09:17,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:09:17,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:09:17,523 INFO L87 Difference]: Start difference. First operand 7426 states and 9570 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:20,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:09:20,546 INFO L93 Difference]: Finished difference Result 19619 states and 25904 transitions. [2022-01-10 00:09:20,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:09:20,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2022-01-10 00:09:20,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:09:20,612 INFO L225 Difference]: With dead ends: 19619 [2022-01-10 00:09:20,612 INFO L226 Difference]: Without dead ends: 12982 [2022-01-10 00:09:20,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:09:20,629 INFO L933 BasicCegarLoop]: 473 mSDtfsCounter, 907 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 3429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:09:20,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 637 Invalid, 3429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 00:09:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2022-01-10 00:09:20,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 12975. [2022-01-10 00:09:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12975 states, 12974 states have (on average 1.2719284723292739) internal successors, (16502), 12974 states have internal predecessors, (16502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:20,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12975 states to 12975 states and 16502 transitions. [2022-01-10 00:09:20,825 INFO L78 Accepts]: Start accepts. Automaton has 12975 states and 16502 transitions. Word has length 238 [2022-01-10 00:09:20,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:09:20,825 INFO L470 AbstractCegarLoop]: Abstraction has 12975 states and 16502 transitions. [2022-01-10 00:09:20,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:20,826 INFO L276 IsEmpty]: Start isEmpty. Operand 12975 states and 16502 transitions. [2022-01-10 00:09:20,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-01-10 00:09:20,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:09:20,828 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, 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] [2022-01-10 00:09:20,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:09:20,828 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:09:20,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:09:20,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1333823715, now seen corresponding path program 1 times [2022-01-10 00:09:20,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:09:20,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299219549] [2022-01-10 00:09:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:09:20,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:09:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:09:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-01-10 00:09:20,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:09:20,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299219549] [2022-01-10 00:09:20,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299219549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:09:20,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:09:20,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:09:20,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779195282] [2022-01-10 00:09:20,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:09:20,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:09:20,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:09:20,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:09:20,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:09:20,936 INFO L87 Difference]: Start difference. First operand 12975 states and 16502 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:23,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:09:23,995 INFO L93 Difference]: Finished difference Result 36180 states and 46592 transitions. [2022-01-10 00:09:23,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:09:23,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2022-01-10 00:09:23,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:09:24,065 INFO L225 Difference]: With dead ends: 36180 [2022-01-10 00:09:24,065 INFO L226 Difference]: Without dead ends: 23994 [2022-01-10 00:09:24,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:09:24,107 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:09:24,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 986 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 00:09:24,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23994 states. [2022-01-10 00:09:24,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23994 to 22416. [2022-01-10 00:09:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22416 states, 22415 states have (on average 1.211153245594468) internal successors, (27148), 22415 states have internal predecessors, (27148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:24,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22416 states to 22416 states and 27148 transitions. [2022-01-10 00:09:24,679 INFO L78 Accepts]: Start accepts. Automaton has 22416 states and 27148 transitions. Word has length 254 [2022-01-10 00:09:24,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:09:24,679 INFO L470 AbstractCegarLoop]: Abstraction has 22416 states and 27148 transitions. [2022-01-10 00:09:24,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:24,680 INFO L276 IsEmpty]: Start isEmpty. Operand 22416 states and 27148 transitions. [2022-01-10 00:09:24,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-01-10 00:09:24,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:09:24,683 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 00:09:24,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:09:24,684 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:09:24,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:09:24,699 INFO L85 PathProgramCache]: Analyzing trace with hash 678495218, now seen corresponding path program 1 times [2022-01-10 00:09:24,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:09:24,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725600964] [2022-01-10 00:09:24,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:09:24,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:09:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:09:24,839 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 00:09:24,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:09:24,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725600964] [2022-01-10 00:09:24,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725600964] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:09:24,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:09:24,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:09:24,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452578961] [2022-01-10 00:09:24,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:09:24,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:09:24,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:09:24,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:09:24,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:09:24,841 INFO L87 Difference]: Start difference. First operand 22416 states and 27148 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 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) [2022-01-10 00:09:28,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:09:28,040 INFO L93 Difference]: Finished difference Result 55858 states and 69068 transitions. [2022-01-10 00:09:28,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:09:28,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 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 297 [2022-01-10 00:09:28,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:09:28,095 INFO L225 Difference]: With dead ends: 55858 [2022-01-10 00:09:28,095 INFO L226 Difference]: Without dead ends: 34231 [2022-01-10 00:09:28,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:09:28,119 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 888 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:09:28,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [888 Valid, 926 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 00:09:28,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34231 states. [2022-01-10 00:09:28,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34231 to 33434. [2022-01-10 00:09:28,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33434 states, 33433 states have (on average 1.1906200460622738) internal successors, (39806), 33433 states have internal predecessors, (39806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:28,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33434 states to 33434 states and 39806 transitions. [2022-01-10 00:09:28,769 INFO L78 Accepts]: Start accepts. Automaton has 33434 states and 39806 transitions. Word has length 297 [2022-01-10 00:09:28,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:09:28,770 INFO L470 AbstractCegarLoop]: Abstraction has 33434 states and 39806 transitions. [2022-01-10 00:09:28,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 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) [2022-01-10 00:09:28,770 INFO L276 IsEmpty]: Start isEmpty. Operand 33434 states and 39806 transitions. [2022-01-10 00:09:28,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-01-10 00:09:28,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:09:28,776 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:09:28,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:09:28,776 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:09:28,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:09:28,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1737785822, now seen corresponding path program 1 times [2022-01-10 00:09:28,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:09:28,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025730757] [2022-01-10 00:09:28,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:09:28,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:09:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:09:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 385 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 00:09:28,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:09:28,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025730757] [2022-01-10 00:09:28,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025730757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:09:28,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:09:28,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:09:28,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526360461] [2022-01-10 00:09:28,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:09:28,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:09:28,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:09:28,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:09:28,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:09:28,881 INFO L87 Difference]: Start difference. First operand 33434 states and 39806 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:35,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:09:35,192 INFO L93 Difference]: Finished difference Result 117460 states and 141039 transitions. [2022-01-10 00:09:35,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:09:35,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 345 [2022-01-10 00:09:35,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:09:35,341 INFO L225 Difference]: With dead ends: 117460 [2022-01-10 00:09:35,341 INFO L226 Difference]: Without dead ends: 84815 [2022-01-10 00:09:35,386 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 [2022-01-10 00:09:35,387 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 1739 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6065 mSolverCounterSat, 1189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 7254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1189 IncrementalHoareTripleChecker+Valid, 6065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:09:35,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 690 Invalid, 7254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1189 Valid, 6065 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-01-10 00:09:35,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84815 states. [2022-01-10 00:09:36,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84815 to 83900. [2022-01-10 00:09:36,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83900 states, 83899 states have (on average 1.1735539160180692) internal successors, (98460), 83899 states have internal predecessors, (98460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83900 states to 83900 states and 98460 transitions. [2022-01-10 00:09:37,080 INFO L78 Accepts]: Start accepts. Automaton has 83900 states and 98460 transitions. Word has length 345 [2022-01-10 00:09:37,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:09:37,081 INFO L470 AbstractCegarLoop]: Abstraction has 83900 states and 98460 transitions. [2022-01-10 00:09:37,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:37,081 INFO L276 IsEmpty]: Start isEmpty. Operand 83900 states and 98460 transitions. [2022-01-10 00:09:37,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-01-10 00:09:37,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:09:37,108 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:09:37,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:09:37,108 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:09:37,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:09:37,108 INFO L85 PathProgramCache]: Analyzing trace with hash -127471989, now seen corresponding path program 1 times [2022-01-10 00:09:37,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:09:37,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16698384] [2022-01-10 00:09:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:09:37,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:09:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:09:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-01-10 00:09:37,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:09:37,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16698384] [2022-01-10 00:09:37,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16698384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:09:37,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:09:37,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:09:37,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103489254] [2022-01-10 00:09:37,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:09:37,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:09:37,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:09:37,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:09:37,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:09:37,252 INFO L87 Difference]: Start difference. First operand 83900 states and 98460 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) [2022-01-10 00:09:40,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:09:40,433 INFO L93 Difference]: Finished difference Result 156777 states and 185083 transitions. [2022-01-10 00:09:40,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:09:40,433 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 354 [2022-01-10 00:09:40,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:09:40,874 INFO L225 Difference]: With dead ends: 156777 [2022-01-10 00:09:40,874 INFO L226 Difference]: Without dead ends: 83909 [2022-01-10 00:09:40,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:09:40,931 INFO L933 BasicCegarLoop]: 1020 mSDtfsCounter, 728 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:09:40,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 1201 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-10 00:09:41,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83909 states. [2022-01-10 00:09:41,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83909 to 83900. [2022-01-10 00:09:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83900 states, 83899 states have (on average 1.172779174960369) internal successors, (98395), 83899 states have internal predecessors, (98395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83900 states to 83900 states and 98395 transitions. [2022-01-10 00:09:42,307 INFO L78 Accepts]: Start accepts. Automaton has 83900 states and 98395 transitions. Word has length 354 [2022-01-10 00:09:42,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:09:42,307 INFO L470 AbstractCegarLoop]: Abstraction has 83900 states and 98395 transitions. [2022-01-10 00:09:42,307 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) [2022-01-10 00:09:42,307 INFO L276 IsEmpty]: Start isEmpty. Operand 83900 states and 98395 transitions. [2022-01-10 00:09:42,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-01-10 00:09:42,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:09:42,355 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:09:42,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:09:42,356 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:09:42,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:09:42,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1869300435, now seen corresponding path program 1 times [2022-01-10 00:09:42,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:09:42,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764111818] [2022-01-10 00:09:42,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:09:42,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:09:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:09:42,762 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 278 proven. 113 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 00:09:42,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:09:42,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764111818] [2022-01-10 00:09:42,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764111818] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:09:42,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312069630] [2022-01-10 00:09:42,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:09:42,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:09:42,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:09:42,775 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) [2022-01-10 00:09:42,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 00:09:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:09:42,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:09:42,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:09:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-01-10 00:09:43,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:09:43,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312069630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:09:43,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:09:43,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-01-10 00:09:43,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819237416] [2022-01-10 00:09:43,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:09:43,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:09:43,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:09:43,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:09:43,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:09:43,674 INFO L87 Difference]: Start difference. First operand 83900 states and 98395 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:46,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:09:46,828 INFO L93 Difference]: Finished difference Result 167009 states and 195995 transitions. [2022-01-10 00:09:46,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:09:46,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 383 [2022-01-10 00:09:46,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:09:46,964 INFO L225 Difference]: With dead ends: 167009 [2022-01-10 00:09:46,964 INFO L226 Difference]: Without dead ends: 83898 [2022-01-10 00:09:47,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:09:47,028 INFO L933 BasicCegarLoop]: 1365 mSDtfsCounter, 1123 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:09:47,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 1447 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 00:09:47,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83898 states. [2022-01-10 00:09:47,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83898 to 83110. [2022-01-10 00:09:48,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83110 states, 83109 states have (on average 1.1286142295058297) internal successors, (93798), 83109 states have internal predecessors, (93798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:48,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83110 states to 83110 states and 93798 transitions. [2022-01-10 00:09:48,208 INFO L78 Accepts]: Start accepts. Automaton has 83110 states and 93798 transitions. Word has length 383 [2022-01-10 00:09:48,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:09:48,208 INFO L470 AbstractCegarLoop]: Abstraction has 83110 states and 93798 transitions. [2022-01-10 00:09:48,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:48,208 INFO L276 IsEmpty]: Start isEmpty. Operand 83110 states and 93798 transitions. [2022-01-10 00:09:48,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-01-10 00:09:48,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:09:48,216 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:09:48,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 00:09:48,443 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 [2022-01-10 00:09:48,443 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:09:48,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:09:48,444 INFO L85 PathProgramCache]: Analyzing trace with hash -289451502, now seen corresponding path program 1 times [2022-01-10 00:09:48,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:09:48,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096174243] [2022-01-10 00:09:48,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:09:48,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:09:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:09:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-01-10 00:09:48,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:09:48,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096174243] [2022-01-10 00:09:48,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096174243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:09:48,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:09:48,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:09:48,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657423512] [2022-01-10 00:09:48,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:09:48,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:09:48,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:09:48,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:09:48,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:09:48,677 INFO L87 Difference]: Start difference. First operand 83110 states and 93798 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:52,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:09:52,076 INFO L93 Difference]: Finished difference Result 191411 states and 218503 transitions. [2022-01-10 00:09:52,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:09:52,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 413 [2022-01-10 00:09:52,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:09:52,227 INFO L225 Difference]: With dead ends: 191411 [2022-01-10 00:09:52,228 INFO L226 Difference]: Without dead ends: 109090 [2022-01-10 00:09:52,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:09:52,261 INFO L933 BasicCegarLoop]: 859 mSDtfsCounter, 892 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:09:52,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 944 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 00:09:52,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109090 states. [2022-01-10 00:09:53,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109090 to 107496. [2022-01-10 00:09:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107496 states, 107495 states have (on average 1.13280617703149) internal successors, (121771), 107495 states have internal predecessors, (121771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107496 states to 107496 states and 121771 transitions. [2022-01-10 00:09:53,676 INFO L78 Accepts]: Start accepts. Automaton has 107496 states and 121771 transitions. Word has length 413 [2022-01-10 00:09:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:09:53,678 INFO L470 AbstractCegarLoop]: Abstraction has 107496 states and 121771 transitions. [2022-01-10 00:09:53,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:53,678 INFO L276 IsEmpty]: Start isEmpty. Operand 107496 states and 121771 transitions. [2022-01-10 00:09:53,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-01-10 00:09:53,689 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:09:53,689 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2022-01-10 00:09:53,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:09:53,690 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:09:53,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:09:53,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1031117907, now seen corresponding path program 1 times [2022-01-10 00:09:53,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:09:53,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666681270] [2022-01-10 00:09:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:09:53,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:09:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:09:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 446 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-01-10 00:09:54,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:09:54,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666681270] [2022-01-10 00:09:54,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666681270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:09:54,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:09:54,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:09:54,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275628479] [2022-01-10 00:09:54,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:09:54,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:09:54,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:09:54,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:09:54,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:09:54,095 INFO L87 Difference]: Start difference. First operand 107496 states and 121771 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:57,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:09:57,391 INFO L93 Difference]: Finished difference Result 239402 states and 273697 transitions. [2022-01-10 00:09:57,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:09:57,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 451 [2022-01-10 00:09:57,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:09:57,577 INFO L225 Difference]: With dead ends: 239402 [2022-01-10 00:09:57,577 INFO L226 Difference]: Without dead ends: 132695 [2022-01-10 00:09:57,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:09:57,643 INFO L933 BasicCegarLoop]: 1787 mSDtfsCounter, 781 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:09:57,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 1938 Invalid, 3270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 00:09:57,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132695 states. [2022-01-10 00:09:59,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132695 to 132678. [2022-01-10 00:09:59,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132678 states, 132677 states have (on average 1.1164859018518658) internal successors, (148132), 132677 states have internal predecessors, (148132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:59,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132678 states to 132678 states and 148132 transitions. [2022-01-10 00:09:59,612 INFO L78 Accepts]: Start accepts. Automaton has 132678 states and 148132 transitions. Word has length 451 [2022-01-10 00:09:59,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:09:59,627 INFO L470 AbstractCegarLoop]: Abstraction has 132678 states and 148132 transitions. [2022-01-10 00:09:59,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:09:59,628 INFO L276 IsEmpty]: Start isEmpty. Operand 132678 states and 148132 transitions. [2022-01-10 00:09:59,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2022-01-10 00:09:59,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:09:59,641 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:09:59,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:09:59,641 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:09:59,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:09:59,642 INFO L85 PathProgramCache]: Analyzing trace with hash 581013402, now seen corresponding path program 1 times [2022-01-10 00:09:59,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:09:59,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455846411] [2022-01-10 00:09:59,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:09:59,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:09:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:09:59,861 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 347 proven. 113 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 00:09:59,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:09:59,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455846411] [2022-01-10 00:09:59,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455846411] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:09:59,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344147888] [2022-01-10 00:09:59,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:09:59,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:09:59,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:09:59,863 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) [2022-01-10 00:09:59,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 00:09:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:09:59,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:09:59,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:10:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-01-10 00:10:00,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:10:00,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344147888] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:10:00,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:10:00,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-01-10 00:10:00,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870711552] [2022-01-10 00:10:00,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:10:00,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:10:00,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:10:00,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:10:00,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:10:00,767 INFO L87 Difference]: Start difference. First operand 132678 states and 148132 transitions. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)