/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/Problem19_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:35:47,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:35:47,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:35:47,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:35:47,571 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 00:35:47,606 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:35:47,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:35:47,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:35:47,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:35:47,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:35:47,607 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:35:47,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:35:47,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:35:47,608 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:35:47,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:35:47,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:35:47,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:35:47,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:35:47,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:35:47,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:35:47,610 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:35:47,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:35:47,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:35:47,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:35:47,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:35:47,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:35:47,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:35:47,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:35:47,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:35:47,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:35:47,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:35:47,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:35:47,611 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:35:47,611 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:35:47,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:35:47,612 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:35:47,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:35:47,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:35:47,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:35:47,848 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:35:47,849 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:35:47,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label54.c [2022-01-10 00:35:47,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95a3cecd1/39c9bdf35a6d483ea993e555842206bc/FLAGfa4deefa1 [2022-01-10 00:35:48,676 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:35:48,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label54.c [2022-01-10 00:35:48,719 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95a3cecd1/39c9bdf35a6d483ea993e555842206bc/FLAGfa4deefa1 [2022-01-10 00:35:48,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95a3cecd1/39c9bdf35a6d483ea993e555842206bc [2022-01-10 00:35:48,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:35:48,923 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:35:48,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:35:48,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:35:48,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:35:48,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:35:48" (1/1) ... [2022-01-10 00:35:48,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b431bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:48, skipping insertion in model container [2022-01-10 00:35:48,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:35:48" (1/1) ... [2022-01-10 00:35:48,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:35:49,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:35:49,432 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/Problem19_label54.c[8269,8282] [2022-01-10 00:35:50,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:35:50,670 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:35:50,692 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/Problem19_label54.c[8269,8282] [2022-01-10 00:35:51,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:35:51,357 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:35:51,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:51 WrapperNode [2022-01-10 00:35:51,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:35:51,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:35:51,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:35:51,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:35:51,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:51" (1/1) ... [2022-01-10 00:35:51,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:51" (1/1) ... [2022-01-10 00:35:52,212 INFO L137 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-01-10 00:35:52,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:35:52,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:35:52,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:35:52,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:35:52,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:51" (1/1) ... [2022-01-10 00:35:52,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:51" (1/1) ... [2022-01-10 00:35:52,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:51" (1/1) ... [2022-01-10 00:35:52,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:51" (1/1) ... [2022-01-10 00:35:52,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:51" (1/1) ... [2022-01-10 00:35:52,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:51" (1/1) ... [2022-01-10 00:35:52,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:51" (1/1) ... [2022-01-10 00:35:53,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:35:53,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:35:53,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:35:53,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:35:53,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:51" (1/1) ... [2022-01-10 00:35:53,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:35:53,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:35:53,309 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 00:35:53,320 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 00:35:53,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:35:53,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:35:53,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:35:53,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:35:53,407 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:35:53,408 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:35:59,922 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:35:59,942 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:35:59,942 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:35:59,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:35:59 BoogieIcfgContainer [2022-01-10 00:35:59,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:35:59,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:35:59,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:35:59,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:35:59,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:35:48" (1/3) ... [2022-01-10 00:35:59,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477301b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:35:59, skipping insertion in model container [2022-01-10 00:35:59,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:35:51" (2/3) ... [2022-01-10 00:35:59,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477301b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:35:59, skipping insertion in model container [2022-01-10 00:35:59,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:35:59" (3/3) ... [2022-01-10 00:35:59,952 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label54.c [2022-01-10 00:35:59,956 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:35:59,956 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:35:59,999 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:36:00,004 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 00:36:00,005 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:36:00,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 00:36:00,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 00:36:00,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:36:00,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:36:00,047 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:36:00,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:36:00,051 INFO L85 PathProgramCache]: Analyzing trace with hash -107486446, now seen corresponding path program 1 times [2022-01-10 00:36:00,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:36:00,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661966099] [2022-01-10 00:36:00,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:36:00,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:36:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:36:00,364 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 00:36:00,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:36:00,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661966099] [2022-01-10 00:36:00,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661966099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:36:00,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:36:00,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:36:00,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787684079] [2022-01-10 00:36:00,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:36:00,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:36:00,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:36:00,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:36:00,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:36:00,404 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 00:36:11,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:36:11,301 INFO L93 Difference]: Finished difference Result 6287 states and 12043 transitions. [2022-01-10 00:36:11,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:36:11,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 00:36:11,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:36:11,338 INFO L225 Difference]: With dead ends: 6287 [2022-01-10 00:36:11,338 INFO L226 Difference]: Without dead ends: 4470 [2022-01-10 00:36:11,344 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 00:36:11,347 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 4561 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 7115 mSolverCounterSat, 3691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4561 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 10806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3691 IncrementalHoareTripleChecker+Valid, 7115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:36:11,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4561 Valid, 998 Invalid, 10806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3691 Valid, 7115 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-01-10 00:36:11,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2022-01-10 00:36:11,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 4467. [2022-01-10 00:36:11,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4467 states, 4466 states have (on average 1.5685176892073445) internal successors, (7005), 4466 states have internal predecessors, (7005), 0 states have call successors, (0), 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 00:36:11,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 7005 transitions. [2022-01-10 00:36:11,493 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 7005 transitions. Word has length 64 [2022-01-10 00:36:11,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:36:11,495 INFO L470 AbstractCegarLoop]: Abstraction has 4467 states and 7005 transitions. [2022-01-10 00:36:11,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 00:36:11,495 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 7005 transitions. [2022-01-10 00:36:11,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-01-10 00:36:11,510 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:36:11,511 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:36:11,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:36:11,511 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:36:11,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:36:11,512 INFO L85 PathProgramCache]: Analyzing trace with hash -853741225, now seen corresponding path program 1 times [2022-01-10 00:36:11,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:36:11,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651745682] [2022-01-10 00:36:11,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:36:11,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:36:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:36:11,915 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 00:36:11,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:36:11,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651745682] [2022-01-10 00:36:11,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651745682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:36:11,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:36:11,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:36:11,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911351625] [2022-01-10 00:36:11,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:36:11,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:36:11,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:36:11,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:36:11,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:36:11,921 INFO L87 Difference]: Start difference. First operand 4467 states and 7005 transitions. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 00:36:21,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:36:21,100 INFO L93 Difference]: Finished difference Result 11709 states and 20252 transitions. [2022-01-10 00:36:21,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:36:21,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2022-01-10 00:36:21,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:36:21,137 INFO L225 Difference]: With dead ends: 11709 [2022-01-10 00:36:21,138 INFO L226 Difference]: Without dead ends: 8609 [2022-01-10 00:36:21,150 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 00:36:21,151 INFO L933 BasicCegarLoop]: 1804 mSDtfsCounter, 3755 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9457 mSolverCounterSat, 1344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 10801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1344 IncrementalHoareTripleChecker+Valid, 9457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:36:21,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3755 Valid, 2158 Invalid, 10801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1344 Valid, 9457 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-01-10 00:36:21,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8609 states. [2022-01-10 00:36:21,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8609 to 8595. [2022-01-10 00:36:21,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8595 states, 8594 states have (on average 1.350942518035839) internal successors, (11610), 8594 states have internal predecessors, (11610), 0 states have call successors, (0), 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 00:36:21,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8595 states to 8595 states and 11610 transitions. [2022-01-10 00:36:21,311 INFO L78 Accepts]: Start accepts. Automaton has 8595 states and 11610 transitions. Word has length 338 [2022-01-10 00:36:21,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:36:21,311 INFO L470 AbstractCegarLoop]: Abstraction has 8595 states and 11610 transitions. [2022-01-10 00:36:21,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 00:36:21,312 INFO L276 IsEmpty]: Start isEmpty. Operand 8595 states and 11610 transitions. [2022-01-10 00:36:21,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-01-10 00:36:21,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:36:21,316 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:36:21,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:36:21,317 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:36:21,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:36:21,317 INFO L85 PathProgramCache]: Analyzing trace with hash 349521469, now seen corresponding path program 1 times [2022-01-10 00:36:21,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:36:21,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279071301] [2022-01-10 00:36:21,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:36:21,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:36:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:36:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 00:36:21,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:36:21,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279071301] [2022-01-10 00:36:21,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279071301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:36:21,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:36:21,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:36:21,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436921859] [2022-01-10 00:36:21,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:36:21,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:36:21,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:36:21,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:36:21,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:36:21,653 INFO L87 Difference]: Start difference. First operand 8595 states and 11610 transitions. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 00:36:27,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:36:27,655 INFO L93 Difference]: Finished difference Result 14489 states and 20501 transitions. [2022-01-10 00:36:27,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:36:27,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 366 [2022-01-10 00:36:27,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:36:27,679 INFO L225 Difference]: With dead ends: 14489 [2022-01-10 00:36:27,680 INFO L226 Difference]: Without dead ends: 8595 [2022-01-10 00:36:27,689 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 00:36:27,690 INFO L933 BasicCegarLoop]: 1776 mSDtfsCounter, 1140 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7327 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 7335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:36:27,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 2118 Invalid, 7335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7327 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-01-10 00:36:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8595 states. [2022-01-10 00:36:27,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8595 to 8595. [2022-01-10 00:36:27,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8595 states, 8594 states have (on average 1.349429834768443) internal successors, (11597), 8594 states have internal predecessors, (11597), 0 states have call successors, (0), 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 00:36:27,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8595 states to 8595 states and 11597 transitions. [2022-01-10 00:36:27,832 INFO L78 Accepts]: Start accepts. Automaton has 8595 states and 11597 transitions. Word has length 366 [2022-01-10 00:36:27,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:36:27,834 INFO L470 AbstractCegarLoop]: Abstraction has 8595 states and 11597 transitions. [2022-01-10 00:36:27,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 00:36:27,834 INFO L276 IsEmpty]: Start isEmpty. Operand 8595 states and 11597 transitions. [2022-01-10 00:36:27,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2022-01-10 00:36:27,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:36:27,846 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:36:27,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:36:27,847 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:36:27,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:36:27,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1354892508, now seen corresponding path program 1 times [2022-01-10 00:36:27,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:36:27,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112791629] [2022-01-10 00:36:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:36:27,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:36:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:36:28,232 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 145 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:36:28,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:36:28,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112791629] [2022-01-10 00:36:28,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112791629] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:36:28,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800177693] [2022-01-10 00:36:28,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:36:28,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:36:28,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:36:28,235 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 00:36:28,279 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 00:36:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:36:28,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:36:28,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:36:29,405 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:36:29,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:36:29,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800177693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:36:29,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:36:29,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-01-10 00:36:29,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452467074] [2022-01-10 00:36:29,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:36:29,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:36:29,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:36:29,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:36:29,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:36:29,410 INFO L87 Difference]: Start difference. First operand 8595 states and 11597 transitions. Second operand has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 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 00:36:34,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:36:34,617 INFO L93 Difference]: Finished difference Result 19939 states and 28772 transitions. [2022-01-10 00:36:34,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:36:34,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 618 [2022-01-10 00:36:34,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:36:34,658 INFO L225 Difference]: With dead ends: 19939 [2022-01-10 00:36:34,659 INFO L226 Difference]: Without dead ends: 14076 [2022-01-10 00:36:34,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:36:34,667 INFO L933 BasicCegarLoop]: 1370 mSDtfsCounter, 1743 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 3871 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 5599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 3871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:36:34,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1743 Valid, 1508 Invalid, 5599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 3871 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-01-10 00:36:34,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14076 states. [2022-01-10 00:36:34,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14076 to 14076. [2022-01-10 00:36:34,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14076 states, 14075 states have (on average 1.2716873889875666) internal successors, (17899), 14075 states have internal predecessors, (17899), 0 states have call successors, (0), 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 00:36:34,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14076 states to 14076 states and 17899 transitions. [2022-01-10 00:36:34,868 INFO L78 Accepts]: Start accepts. Automaton has 14076 states and 17899 transitions. Word has length 618 [2022-01-10 00:36:34,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:36:34,869 INFO L470 AbstractCegarLoop]: Abstraction has 14076 states and 17899 transitions. [2022-01-10 00:36:34,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 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 00:36:34,870 INFO L276 IsEmpty]: Start isEmpty. Operand 14076 states and 17899 transitions. [2022-01-10 00:36:34,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2022-01-10 00:36:34,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:36:34,874 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:36:34,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 00:36:35,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:36:35,099 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:36:35,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:36:35,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1875183880, now seen corresponding path program 1 times [2022-01-10 00:36:35,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:36:35,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494661741] [2022-01-10 00:36:35,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:36:35,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:36:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:36:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 145 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:36:35,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:36:35,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494661741] [2022-01-10 00:36:35,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494661741] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:36:35,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776744766] [2022-01-10 00:36:35,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:36:35,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:36:35,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:36:35,436 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 00:36:35,472 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 00:36:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:36:35,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:36:35,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:36:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:36:36,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:36:36,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776744766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:36:36,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:36:36,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-01-10 00:36:36,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23795817] [2022-01-10 00:36:36,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:36:36,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:36:36,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:36:36,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:36:36,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:36:36,384 INFO L87 Difference]: Start difference. First operand 14076 states and 17899 transitions. Second operand has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 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 00:36:41,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:36:41,647 INFO L93 Difference]: Finished difference Result 36343 states and 47665 transitions. [2022-01-10 00:36:41,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:36:41,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 620 [2022-01-10 00:36:41,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:36:41,698 INFO L225 Difference]: With dead ends: 36343 [2022-01-10 00:36:41,698 INFO L226 Difference]: Without dead ends: 24999 [2022-01-10 00:36:41,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:36:41,717 INFO L933 BasicCegarLoop]: 684 mSDtfsCounter, 2531 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4031 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2531 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 5503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 4031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:36:41,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2531 Valid, 794 Invalid, 5503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 4031 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-01-10 00:36:41,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24999 states. [2022-01-10 00:36:41,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24999 to 23631. [2022-01-10 00:36:42,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23631 states, 23630 states have (on average 1.2681760473973762) internal successors, (29967), 23630 states have internal predecessors, (29967), 0 states have call successors, (0), 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 00:36:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23631 states to 23631 states and 29967 transitions. [2022-01-10 00:36:42,056 INFO L78 Accepts]: Start accepts. Automaton has 23631 states and 29967 transitions. Word has length 620 [2022-01-10 00:36:42,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:36:42,057 INFO L470 AbstractCegarLoop]: Abstraction has 23631 states and 29967 transitions. [2022-01-10 00:36:42,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 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 00:36:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 23631 states and 29967 transitions. [2022-01-10 00:36:42,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2022-01-10 00:36:42,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:36:42,063 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:36:42,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 00:36:42,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:36:42,278 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:36:42,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:36:42,278 INFO L85 PathProgramCache]: Analyzing trace with hash 956812462, now seen corresponding path program 1 times [2022-01-10 00:36:42,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:36:42,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240067981] [2022-01-10 00:36:42,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:36:42,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:36:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:36:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-01-10 00:36:42,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:36:42,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240067981] [2022-01-10 00:36:42,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240067981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:36:42,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:36:42,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:36:42,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580187392] [2022-01-10 00:36:42,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:36:42,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:36:42,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:36:42,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:36:42,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:36:42,678 INFO L87 Difference]: Start difference. First operand 23631 states and 29967 transitions. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 2 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)