/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_Bitvector.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:47:40,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:47:40,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:47:40,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 06:47:40,471 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:47:40,511 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:47:40,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:47:40,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:47:40,512 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:47:40,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:47:40,513 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:47:40,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:47:40,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:47:40,513 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:47:40,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:47:40,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:47:40,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:47:40,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:47:40,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:47:40,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:47:40,514 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:47:40,514 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:47:40,515 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:47:40,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:47:40,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:47:40,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:47:40,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:47:40,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:47:40,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:47:40,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:47:40,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:47:40,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:47:40,516 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:47:40,516 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:47:40,516 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:47:40,516 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:47:40,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:47:40,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:47:40,517 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:47:40,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:47:40,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:47:40,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:47:40,782 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:47:40,785 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:47:40,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c [2022-01-10 06:47:40,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eea247aa5/4fa31b4bcc784dd2b12062c4da04bcab/FLAG206534a32 [2022-01-10 06:47:41,305 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:47:41,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c [2022-01-10 06:47:41,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eea247aa5/4fa31b4bcc784dd2b12062c4da04bcab/FLAG206534a32 [2022-01-10 06:47:41,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eea247aa5/4fa31b4bcc784dd2b12062c4da04bcab [2022-01-10 06:47:41,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:47:41,334 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:47:41,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:47:41,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:47:41,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:47:41,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:47:41" (1/1) ... [2022-01-10 06:47:41,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ae25e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41, skipping insertion in model container [2022-01-10 06:47:41,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:47:41" (1/1) ... [2022-01-10 06:47:41,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:47:41,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:47:41,649 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c[28368,28381] [2022-01-10 06:47:41,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:47:41,674 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:47:41,744 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c[28368,28381] [2022-01-10 06:47:41,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:47:41,759 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:47:41,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41 WrapperNode [2022-01-10 06:47:41,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:47:41,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:47:41,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:47:41,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:47:41,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 06:47:41,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 06:47:41,845 INFO L137 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 930 [2022-01-10 06:47:41,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:47:41,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:47:41,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:47:41,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:47:41,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 06:47:41,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 06:47:41,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 06:47:41,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 06:47:41,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 06:47:41,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 06:47:41,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 06:47:41,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:47:41,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:47:41,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:47:41,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:47:41,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (1/1) ... [2022-01-10 06:47:41,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:47:41,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:47:41,973 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 06:47:41,991 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 06:47:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:47:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:47:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:47:42,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:47:42,116 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:47:42,117 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:47:42,853 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:47:42,863 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:47:42,864 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:47:42,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:47:42 BoogieIcfgContainer [2022-01-10 06:47:42,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:47:42,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:47:42,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:47:42,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:47:42,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:47:41" (1/3) ... [2022-01-10 06:47:42,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377e40e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:47:42, skipping insertion in model container [2022-01-10 06:47:42,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:47:41" (2/3) ... [2022-01-10 06:47:42,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377e40e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:47:42, skipping insertion in model container [2022-01-10 06:47:42,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:47:42" (3/3) ... [2022-01-10 06:47:42,874 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.UNBOUNDED.pals.c [2022-01-10 06:47:42,878 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:47:42,878 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:47:42,924 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:47:42,930 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 06:47:42,930 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:47:42,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 312 states, 310 states have (on average 1.8) internal successors, (558), 311 states have internal predecessors, (558), 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 06:47:42,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 06:47:42,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:47:42,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:47:42,982 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:47:42,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:47:42,986 INFO L85 PathProgramCache]: Analyzing trace with hash 883240596, now seen corresponding path program 1 times [2022-01-10 06:47:42,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:47:42,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125992208] [2022-01-10 06:47:42,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:47:42,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:47:42,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:47:42,998 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:47:43,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:47:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:47:43,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:47:43,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:47:43,395 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 06:47:43,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:47:43,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:47:43,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125992208] [2022-01-10 06:47:43,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125992208] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:47:43,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:47:43,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:47:43,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425756433] [2022-01-10 06:47:43,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:47:43,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:47:43,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:47:43,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:47:43,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:47:43,438 INFO L87 Difference]: Start difference. First operand has 312 states, 310 states have (on average 1.8) internal successors, (558), 311 states have internal predecessors, (558), 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 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 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 06:47:43,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:47:43,492 INFO L93 Difference]: Finished difference Result 429 states and 759 transitions. [2022-01-10 06:47:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:47:43,496 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2022-01-10 06:47:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:47:43,517 INFO L225 Difference]: With dead ends: 429 [2022-01-10 06:47:43,518 INFO L226 Difference]: Without dead ends: 308 [2022-01-10 06:47:43,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:47:43,524 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:47:43,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:47:43,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-01-10 06:47:43,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2022-01-10 06:47:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.794788273615635) internal successors, (551), 307 states have internal predecessors, (551), 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 06:47:43,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 551 transitions. [2022-01-10 06:47:43,595 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 551 transitions. Word has length 77 [2022-01-10 06:47:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:47:43,595 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 551 transitions. [2022-01-10 06:47:43,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 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 06:47:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 551 transitions. [2022-01-10 06:47:43,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 06:47:43,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:47:43,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:47:43,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:47:43,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:47:43,810 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:47:43,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:47:43,811 INFO L85 PathProgramCache]: Analyzing trace with hash 749227090, now seen corresponding path program 1 times [2022-01-10 06:47:43,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:47:43,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811092546] [2022-01-10 06:47:43,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:47:43,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:47:43,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:47:43,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:47:43,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:47:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:47:43,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:47:43,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:47:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:47:44,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:47:44,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:47:44,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811092546] [2022-01-10 06:47:44,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811092546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:47:44,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:47:44,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:47:44,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241443205] [2022-01-10 06:47:44,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:47:44,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:47:44,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:47:44,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:47:44,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:47:44,105 INFO L87 Difference]: Start difference. First operand 308 states and 551 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 06:47:44,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:47:44,202 INFO L93 Difference]: Finished difference Result 428 states and 752 transitions. [2022-01-10 06:47:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:47:44,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2022-01-10 06:47:44,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:47:44,205 INFO L225 Difference]: With dead ends: 428 [2022-01-10 06:47:44,205 INFO L226 Difference]: Without dead ends: 308 [2022-01-10 06:47:44,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:47:44,208 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 3 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2151 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:47:44,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2151 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:47:44,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-01-10 06:47:44,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2022-01-10 06:47:44,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.6579804560260587) internal successors, (509), 307 states have internal predecessors, (509), 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 06:47:44,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 509 transitions. [2022-01-10 06:47:44,229 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 509 transitions. Word has length 77 [2022-01-10 06:47:44,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:47:44,232 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 509 transitions. [2022-01-10 06:47:44,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 06:47:44,234 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 509 transitions. [2022-01-10 06:47:44,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 06:47:44,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:47:44,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:47:44,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:47:44,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:47:44,441 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:47:44,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:47:44,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1045938854, now seen corresponding path program 1 times [2022-01-10 06:47:44,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:47:44,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850497829] [2022-01-10 06:47:44,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:47:44,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:47:44,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:47:44,445 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:47:44,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:47:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:47:44,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:47:44,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:47:44,860 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 06:47:44,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:47:44,860 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:47:44,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850497829] [2022-01-10 06:47:44,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850497829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:47:44,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:47:44,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:47:44,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430546884] [2022-01-10 06:47:44,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:47:44,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:47:44,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:47:44,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:47:44,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:47:44,862 INFO L87 Difference]: Start difference. First operand 308 states and 509 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 06:47:44,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:47:44,921 INFO L93 Difference]: Finished difference Result 529 states and 882 transitions. [2022-01-10 06:47:44,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:47:44,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 118 [2022-01-10 06:47:44,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:47:44,923 INFO L225 Difference]: With dead ends: 529 [2022-01-10 06:47:44,924 INFO L226 Difference]: Without dead ends: 413 [2022-01-10 06:47:44,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 116 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 06:47:44,925 INFO L933 BasicCegarLoop]: 503 mSDtfsCounter, 167 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:47:44,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 959 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:47:44,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-01-10 06:47:44,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 410. [2022-01-10 06:47:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.6552567237163813) internal successors, (677), 409 states have internal predecessors, (677), 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 06:47:44,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 677 transitions. [2022-01-10 06:47:44,934 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 677 transitions. Word has length 118 [2022-01-10 06:47:44,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:47:44,947 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 677 transitions. [2022-01-10 06:47:44,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 06:47:44,948 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 677 transitions. [2022-01-10 06:47:44,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 06:47:44,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:47:44,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:47:44,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:47:45,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:47:45,152 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:47:45,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:47:45,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1919052267, now seen corresponding path program 1 times [2022-01-10 06:47:45,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:47:45,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15893888] [2022-01-10 06:47:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:47:45,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:47:45,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:47:45,155 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:47:45,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 06:47:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:47:45,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:47:45,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:47:45,557 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 06:47:45,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:47:45,557 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:47:45,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15893888] [2022-01-10 06:47:45,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15893888] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:47:45,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:47:45,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:47:45,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183948162] [2022-01-10 06:47:45,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:47:45,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:47:45,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:47:45,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:47:45,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:47:45,564 INFO L87 Difference]: Start difference. First operand 410 states and 677 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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 06:47:45,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:47:45,647 INFO L93 Difference]: Finished difference Result 1204 states and 1986 transitions. [2022-01-10 06:47:45,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:47:45,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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 121 [2022-01-10 06:47:45,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:47:45,654 INFO L225 Difference]: With dead ends: 1204 [2022-01-10 06:47:45,655 INFO L226 Difference]: Without dead ends: 805 [2022-01-10 06:47:45,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 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 06:47:45,664 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 1367 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:47:45,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1367 Valid, 984 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:47:45,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-01-10 06:47:45,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 803. [2022-01-10 06:47:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.64214463840399) internal successors, (1317), 802 states have internal predecessors, (1317), 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 06:47:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1317 transitions. [2022-01-10 06:47:45,695 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1317 transitions. Word has length 121 [2022-01-10 06:47:45,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:47:45,697 INFO L470 AbstractCegarLoop]: Abstraction has 803 states and 1317 transitions. [2022-01-10 06:47:45,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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 06:47:45,697 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1317 transitions. [2022-01-10 06:47:45,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 06:47:45,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:47:45,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:47:45,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:47:45,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:47:45,911 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:47:45,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:47:45,912 INFO L85 PathProgramCache]: Analyzing trace with hash -928810818, now seen corresponding path program 1 times [2022-01-10 06:47:45,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:47:45,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180088377] [2022-01-10 06:47:45,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:47:45,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:47:45,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:47:45,914 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:47:45,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:47:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:47:46,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:47:46,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:47:46,232 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 06:47:46,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:47:46,233 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:47:46,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180088377] [2022-01-10 06:47:46,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180088377] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:47:46,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:47:46,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:47:46,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127151541] [2022-01-10 06:47:46,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:47:46,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:47:46,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:47:46,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:47:46,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:47:46,244 INFO L87 Difference]: Start difference. First operand 803 states and 1317 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 06:47:46,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:47:46,270 INFO L93 Difference]: Finished difference Result 1221 states and 2025 transitions. [2022-01-10 06:47:46,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:47:46,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 123 [2022-01-10 06:47:46,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:47:46,275 INFO L225 Difference]: With dead ends: 1221 [2022-01-10 06:47:46,275 INFO L226 Difference]: Without dead ends: 992 [2022-01-10 06:47:46,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 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 06:47:46,276 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 174 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:47:46,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 1134 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:47:46,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2022-01-10 06:47:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 990. [2022-01-10 06:47:46,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 989 states have (on average 1.6501516683518707) internal successors, (1632), 989 states have internal predecessors, (1632), 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 06:47:46,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1632 transitions. [2022-01-10 06:47:46,298 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1632 transitions. Word has length 123 [2022-01-10 06:47:46,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:47:46,299 INFO L470 AbstractCegarLoop]: Abstraction has 990 states and 1632 transitions. [2022-01-10 06:47:46,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 06:47:46,299 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1632 transitions. [2022-01-10 06:47:46,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 06:47:46,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:47:46,301 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:47:46,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:47:46,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:47:46,510 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:47:46,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:47:46,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1801610138, now seen corresponding path program 1 times [2022-01-10 06:47:46,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:47:46,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130501551] [2022-01-10 06:47:46,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:47:46,512 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:47:46,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:47:46,513 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:47:46,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 06:47:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:47:46,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:47:46,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:47:46,907 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 06:47:46,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:47:46,908 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:47:46,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130501551] [2022-01-10 06:47:46,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130501551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:47:46,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:47:46,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:47:46,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101238244] [2022-01-10 06:47:46,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:47:46,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:47:46,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:47:46,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:47:46,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:47:46,910 INFO L87 Difference]: Start difference. First operand 990 states and 1632 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 06:47:46,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:47:46,986 INFO L93 Difference]: Finished difference Result 2928 states and 4825 transitions. [2022-01-10 06:47:46,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:47:46,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 123 [2022-01-10 06:47:46,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:47:46,995 INFO L225 Difference]: With dead ends: 2928 [2022-01-10 06:47:46,995 INFO L226 Difference]: Without dead ends: 1950 [2022-01-10 06:47:46,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 120 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 06:47:46,999 INFO L933 BasicCegarLoop]: 509 mSDtfsCounter, 1353 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:47:46,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1353 Valid, 989 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:47:47,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2022-01-10 06:47:47,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1948. [2022-01-10 06:47:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1947 states have (on average 1.6384180790960452) internal successors, (3190), 1947 states have internal predecessors, (3190), 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 06:47:47,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 3190 transitions. [2022-01-10 06:47:47,053 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 3190 transitions. Word has length 123 [2022-01-10 06:47:47,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:47:47,054 INFO L470 AbstractCegarLoop]: Abstraction has 1948 states and 3190 transitions. [2022-01-10 06:47:47,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 06:47:47,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 3190 transitions. [2022-01-10 06:47:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 06:47:47,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:47:47,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:47:47,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:47:47,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:47:47,267 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:47:47,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:47:47,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1319733973, now seen corresponding path program 1 times [2022-01-10 06:47:47,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:47:47,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759313641] [2022-01-10 06:47:47,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:47:47,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:47:47,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:47:47,269 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:47:47,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:47:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:47:47,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:47:47,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:47:47,593 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 06:47:47,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:47:47,594 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:47:47,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759313641] [2022-01-10 06:47:47,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759313641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:47:47,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:47:47,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:47:47,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553847929] [2022-01-10 06:47:47,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:47:47,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:47:47,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:47:47,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:47:47,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:47:47,596 INFO L87 Difference]: Start difference. First operand 1948 states and 3190 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:47:47,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:47:47,692 INFO L93 Difference]: Finished difference Result 5761 states and 9431 transitions. [2022-01-10 06:47:47,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:47:47,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-10 06:47:47,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:47:47,707 INFO L225 Difference]: With dead ends: 5761 [2022-01-10 06:47:47,708 INFO L226 Difference]: Without dead ends: 3840 [2022-01-10 06:47:47,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 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 06:47:47,712 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 1337 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:47:47,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1337 Valid, 992 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:47:47,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3840 states. [2022-01-10 06:47:47,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3840 to 3838. [2022-01-10 06:47:47,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3838 states, 3837 states have (on average 1.6270523846755278) internal successors, (6243), 3837 states have internal predecessors, (6243), 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 06:47:47,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3838 states to 3838 states and 6243 transitions. [2022-01-10 06:47:47,870 INFO L78 Accepts]: Start accepts. Automaton has 3838 states and 6243 transitions. Word has length 125 [2022-01-10 06:47:47,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:47:47,871 INFO L470 AbstractCegarLoop]: Abstraction has 3838 states and 6243 transitions. [2022-01-10 06:47:47,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:47:47,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3838 states and 6243 transitions. [2022-01-10 06:47:47,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:47:47,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:47:47,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:47:47,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:47:48,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:47:48,088 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:47:48,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:47:48,089 INFO L85 PathProgramCache]: Analyzing trace with hash -69701222, now seen corresponding path program 1 times [2022-01-10 06:47:48,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:47:48,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911482250] [2022-01-10 06:47:48,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:47:48,090 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:47:48,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:47:48,091 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:47:48,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 06:47:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:47:48,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:47:48,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:47:48,393 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 06:47:48,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:47:48,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:47:48,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911482250] [2022-01-10 06:47:48,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911482250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:47:48,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:47:48,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:47:48,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556975624] [2022-01-10 06:47:48,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:47:48,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:47:48,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:47:48,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:47:48,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:47:48,395 INFO L87 Difference]: Start difference. First operand 3838 states and 6243 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 06:47:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:47:48,481 INFO L93 Difference]: Finished difference Result 8398 states and 13801 transitions. [2022-01-10 06:47:48,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:47:48,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2022-01-10 06:47:48,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:47:48,506 INFO L225 Difference]: With dead ends: 8398 [2022-01-10 06:47:48,506 INFO L226 Difference]: Without dead ends: 6016 [2022-01-10 06:47:48,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 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 06:47:48,513 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 162 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:47:48,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 981 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:47:48,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6016 states. [2022-01-10 06:47:48,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6016 to 5990. [2022-01-10 06:47:48,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5990 states, 5989 states have (on average 1.6301552846885958) internal successors, (9763), 5989 states have internal predecessors, (9763), 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 06:47:48,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5990 states to 5990 states and 9763 transitions. [2022-01-10 06:47:48,690 INFO L78 Accepts]: Start accepts. Automaton has 5990 states and 9763 transitions. Word has length 127 [2022-01-10 06:47:48,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:47:48,691 INFO L470 AbstractCegarLoop]: Abstraction has 5990 states and 9763 transitions. [2022-01-10 06:47:48,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 06:47:48,691 INFO L276 IsEmpty]: Start isEmpty. Operand 5990 states and 9763 transitions. [2022-01-10 06:47:48,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 06:47:48,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:47:48,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:47:48,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 06:47:48,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:47:48,912 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:47:48,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:47:48,913 INFO L85 PathProgramCache]: Analyzing trace with hash -46043419, now seen corresponding path program 1 times [2022-01-10 06:47:48,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:47:48,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284934239] [2022-01-10 06:47:48,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:47:48,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:47:48,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:47:48,915 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:47:48,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 06:47:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:47:49,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:47:49,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:47:49,295 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 06:47:49,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:47:49,295 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:47:49,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284934239] [2022-01-10 06:47:49,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284934239] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:47:49,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:47:49,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:47:49,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915232856] [2022-01-10 06:47:49,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:47:49,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:47:49,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:47:49,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:47:49,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:47:49,297 INFO L87 Difference]: Start difference. First operand 5990 states and 9763 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 06:47:49,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:47:49,480 INFO L93 Difference]: Finished difference Result 17586 states and 28657 transitions. [2022-01-10 06:47:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:47:49,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 130 [2022-01-10 06:47:49,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:47:49,522 INFO L225 Difference]: With dead ends: 17586 [2022-01-10 06:47:49,523 INFO L226 Difference]: Without dead ends: 11732 [2022-01-10 06:47:49,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 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 06:47:49,536 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 1157 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:47:49,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1157 Valid, 1113 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:47:49,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11732 states. [2022-01-10 06:47:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11732 to 11730. [2022-01-10 06:47:49,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11730 states, 11729 states have (on average 1.6205132577372325) internal successors, (19007), 11729 states have internal predecessors, (19007), 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 06:47:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11730 states to 11730 states and 19007 transitions. [2022-01-10 06:47:49,885 INFO L78 Accepts]: Start accepts. Automaton has 11730 states and 19007 transitions. Word has length 130 [2022-01-10 06:47:49,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:47:49,885 INFO L470 AbstractCegarLoop]: Abstraction has 11730 states and 19007 transitions. [2022-01-10 06:47:49,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 06:47:49,886 INFO L276 IsEmpty]: Start isEmpty. Operand 11730 states and 19007 transitions. [2022-01-10 06:47:49,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 06:47:49,897 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:47:49,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:47:49,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 06:47:50,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:47:50,107 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:47:50,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:47:50,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1902918976, now seen corresponding path program 1 times [2022-01-10 06:47:50,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:47:50,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334711412] [2022-01-10 06:47:50,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:47:50,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:47:50,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:47:50,110 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:47:50,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 06:47:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:47:50,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:47:50,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:47:50,458 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 06:47:50,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:47:50,458 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:47:50,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334711412] [2022-01-10 06:47:50,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334711412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:47:50,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:47:50,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:47:50,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348400588] [2022-01-10 06:47:50,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:47:50,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:47:50,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:47:50,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:47:50,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:47:50,461 INFO L87 Difference]: Start difference. First operand 11730 states and 19007 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 06:47:50,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:47:50,833 INFO L93 Difference]: Finished difference Result 34632 states and 56097 transitions. [2022-01-10 06:47:50,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:47:50,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 132 [2022-01-10 06:47:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:47:50,897 INFO L225 Difference]: With dead ends: 34632 [2022-01-10 06:47:50,897 INFO L226 Difference]: Without dead ends: 23031 [2022-01-10 06:47:50,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 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 06:47:50,920 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 1303 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:47:50,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1303 Valid, 988 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:47:50,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23031 states. [2022-01-10 06:47:51,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23031 to 23029. [2022-01-10 06:47:51,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23029 states, 23028 states have (on average 1.6079989577905158) internal successors, (37029), 23028 states have internal predecessors, (37029), 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 06:47:51,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23029 states to 23029 states and 37029 transitions. [2022-01-10 06:47:51,658 INFO L78 Accepts]: Start accepts. Automaton has 23029 states and 37029 transitions. Word has length 132 [2022-01-10 06:47:51,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:47:51,658 INFO L470 AbstractCegarLoop]: Abstraction has 23029 states and 37029 transitions. [2022-01-10 06:47:51,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 06:47:51,659 INFO L276 IsEmpty]: Start isEmpty. Operand 23029 states and 37029 transitions. [2022-01-10 06:47:51,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 06:47:51,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:47:51,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:47:51,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 06:47:51,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:47:51,889 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:47:51,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:47:51,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2014980325, now seen corresponding path program 1 times [2022-01-10 06:47:51,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:47:51,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023911552] [2022-01-10 06:47:51,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:47:51,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:47:51,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:47:51,891 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:47:52,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 06:47:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:47:52,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:47:52,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:47:52,286 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 06:47:52,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:47:52,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:47:52,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023911552] [2022-01-10 06:47:52,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023911552] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:47:52,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:47:52,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:47:52,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996894388] [2022-01-10 06:47:52,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:47:52,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:47:52,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:47:52,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:47:52,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:47:52,289 INFO L87 Difference]: Start difference. First operand 23029 states and 37029 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 06:47:52,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:47:52,821 INFO L93 Difference]: Finished difference Result 45693 states and 73243 transitions. [2022-01-10 06:47:52,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:47:52,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 132 [2022-01-10 06:47:52,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:47:52,916 INFO L225 Difference]: With dead ends: 45693 [2022-01-10 06:47:52,916 INFO L226 Difference]: Without dead ends: 34153 [2022-01-10 06:47:52,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 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 06:47:52,946 INFO L933 BasicCegarLoop]: 834 mSDtfsCounter, 494 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:47:52,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 1322 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:47:52,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34153 states. [2022-01-10 06:47:53,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34153 to 23023. [2022-01-10 06:47:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23023 states, 23022 states have (on average 1.6078533576578924) internal successors, (37016), 23022 states have internal predecessors, (37016), 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 06:47:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23023 states to 23023 states and 37016 transitions. [2022-01-10 06:47:53,786 INFO L78 Accepts]: Start accepts. Automaton has 23023 states and 37016 transitions. Word has length 132 [2022-01-10 06:47:53,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:47:53,786 INFO L470 AbstractCegarLoop]: Abstraction has 23023 states and 37016 transitions. [2022-01-10 06:47:53,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 06:47:53,787 INFO L276 IsEmpty]: Start isEmpty. Operand 23023 states and 37016 transitions. [2022-01-10 06:47:53,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 06:47:53,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:47:53,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:47:53,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 06:47:54,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:47:54,016 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:47:54,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:47:54,017 INFO L85 PathProgramCache]: Analyzing trace with hash -886678350, now seen corresponding path program 1 times [2022-01-10 06:47:54,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:47:54,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967112608] [2022-01-10 06:47:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:47:54,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:47:54,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:47:54,019 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:47:54,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 06:47:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:47:54,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:47:54,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:47:54,278 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 06:47:54,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:47:54,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:47:54,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967112608] [2022-01-10 06:47:54,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967112608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:47:54,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:47:54,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:47:54,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281414438] [2022-01-10 06:47:54,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:47:54,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:47:54,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:47:54,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:47:54,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:47:54,279 INFO L87 Difference]: Start difference. First operand 23023 states and 37016 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 06:47:54,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:47:54,785 INFO L93 Difference]: Finished difference Result 45846 states and 73505 transitions. [2022-01-10 06:47:54,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:47:54,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 132 [2022-01-10 06:47:54,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:47:54,847 INFO L225 Difference]: With dead ends: 45846 [2022-01-10 06:47:54,847 INFO L226 Difference]: Without dead ends: 34321 [2022-01-10 06:47:54,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 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 06:47:54,866 INFO L933 BasicCegarLoop]: 834 mSDtfsCounter, 487 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:47:54,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 1322 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:47:54,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34321 states. [2022-01-10 06:47:55,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34321 to 23031. [2022-01-10 06:47:55,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23031 states, 23030 states have (on average 1.60755536257056) internal successors, (37022), 23030 states have internal predecessors, (37022), 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 06:47:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23031 states to 23031 states and 37022 transitions. [2022-01-10 06:47:55,573 INFO L78 Accepts]: Start accepts. Automaton has 23031 states and 37022 transitions. Word has length 132 [2022-01-10 06:47:55,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:47:55,573 INFO L470 AbstractCegarLoop]: Abstraction has 23031 states and 37022 transitions. [2022-01-10 06:47:55,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 06:47:55,574 INFO L276 IsEmpty]: Start isEmpty. Operand 23031 states and 37022 transitions. [2022-01-10 06:47:55,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 06:47:55,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:47:55,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:47:55,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 06:47:55,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:47:55,802 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:47:55,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:47:55,802 INFO L85 PathProgramCache]: Analyzing trace with hash -392705719, now seen corresponding path program 1 times [2022-01-10 06:47:55,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:47:55,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337311649] [2022-01-10 06:47:55,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:47:55,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:47:55,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:47:55,804 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:47:55,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 06:47:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:47:55,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:47:55,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:47:56,090 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 06:47:56,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:47:56,091 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:47:56,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337311649] [2022-01-10 06:47:56,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337311649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:47:56,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:47:56,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:47:56,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200374613] [2022-01-10 06:47:56,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:47:56,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:47:56,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:47:56,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:47:56,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:47:56,093 INFO L87 Difference]: Start difference. First operand 23031 states and 37022 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 06:47:56,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:47:56,863 INFO L93 Difference]: Finished difference Result 83038 states and 133006 transitions. [2022-01-10 06:47:56,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:47:56,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 132 [2022-01-10 06:47:56,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:47:56,998 INFO L225 Difference]: With dead ends: 83038 [2022-01-10 06:47:56,998 INFO L226 Difference]: Without dead ends: 61740 [2022-01-10 06:47:57,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 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 06:47:57,040 INFO L933 BasicCegarLoop]: 1189 mSDtfsCounter, 1102 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:47:57,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 2533 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:47:57,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61740 states. [2022-01-10 06:47:57,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61740 to 24536. [2022-01-10 06:47:57,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24536 states, 24535 states have (on average 1.6084369268392094) internal successors, (39463), 24535 states have internal predecessors, (39463), 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 06:47:57,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24536 states to 24536 states and 39463 transitions. [2022-01-10 06:47:57,990 INFO L78 Accepts]: Start accepts. Automaton has 24536 states and 39463 transitions. Word has length 132 [2022-01-10 06:47:57,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:47:57,990 INFO L470 AbstractCegarLoop]: Abstraction has 24536 states and 39463 transitions. [2022-01-10 06:47:57,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 06:47:57,990 INFO L276 IsEmpty]: Start isEmpty. Operand 24536 states and 39463 transitions. [2022-01-10 06:47:58,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 06:47:58,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:47:58,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:47:58,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-01-10 06:47:58,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:47:58,235 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:47:58,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:47:58,236 INFO L85 PathProgramCache]: Analyzing trace with hash -2107154674, now seen corresponding path program 1 times [2022-01-10 06:47:58,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:47:58,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461960150] [2022-01-10 06:47:58,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:47:58,237 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:47:58,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:47:58,238 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:47:58,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 06:47:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:47:58,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:47:58,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:47:58,502 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 06:47:58,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:47:58,503 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:47:58,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461960150] [2022-01-10 06:47:58,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461960150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:47:58,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:47:58,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:47:58,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346461325] [2022-01-10 06:47:58,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:47:58,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:47:58,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:47:58,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:47:58,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:47:58,504 INFO L87 Difference]: Start difference. First operand 24536 states and 39463 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 06:47:59,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:47:59,013 INFO L93 Difference]: Finished difference Result 41548 states and 67385 transitions. [2022-01-10 06:47:59,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:47:59,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 132 [2022-01-10 06:47:59,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:47:59,050 INFO L225 Difference]: With dead ends: 41548 [2022-01-10 06:47:59,051 INFO L226 Difference]: Without dead ends: 32250 [2022-01-10 06:47:59,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 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 06:47:59,060 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 163 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:47:59,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1124 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:47:59,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32250 states. [2022-01-10 06:47:59,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32250 to 32248. [2022-01-10 06:47:59,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32248 states, 32247 states have (on average 1.6107854994263031) internal successors, (51943), 32247 states have internal predecessors, (51943), 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 06:47:59,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32248 states to 32248 states and 51943 transitions. [2022-01-10 06:47:59,700 INFO L78 Accepts]: Start accepts. Automaton has 32248 states and 51943 transitions. Word has length 132 [2022-01-10 06:47:59,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:47:59,700 INFO L470 AbstractCegarLoop]: Abstraction has 32248 states and 51943 transitions. [2022-01-10 06:47:59,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 06:47:59,700 INFO L276 IsEmpty]: Start isEmpty. Operand 32248 states and 51943 transitions. [2022-01-10 06:47:59,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:47:59,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:47:59,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:47:59,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 06:47:59,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:47:59,927 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:47:59,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:47:59,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1887921541, now seen corresponding path program 1 times [2022-01-10 06:47:59,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:47:59,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023687823] [2022-01-10 06:47:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:47:59,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:47:59,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:47:59,930 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:47:59,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 06:48:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:48:00,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:48:00,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:48:00,364 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 06:48:00,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:48:00,364 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:48:00,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023687823] [2022-01-10 06:48:00,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023687823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:48:00,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:48:00,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:48:00,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071175954] [2022-01-10 06:48:00,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:48:00,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:48:00,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:48:00,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:48:00,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:48:00,366 INFO L87 Difference]: Start difference. First operand 32248 states and 51943 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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 06:48:01,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:48:01,308 INFO L93 Difference]: Finished difference Result 95202 states and 153321 transitions. [2022-01-10 06:48:01,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:48:01,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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 134 [2022-01-10 06:48:01,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:48:01,401 INFO L225 Difference]: With dead ends: 95202 [2022-01-10 06:48:01,402 INFO L226 Difference]: Without dead ends: 63391 [2022-01-10 06:48:01,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 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 06:48:01,549 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 1262 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:48:01,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1262 Valid, 1004 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:48:01,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63391 states. [2022-01-10 06:48:02,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63391 to 63389. [2022-01-10 06:48:02,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63389 states, 63388 states have (on average 1.599277465766391) internal successors, (101375), 63388 states have internal predecessors, (101375), 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 06:48:03,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63389 states to 63389 states and 101375 transitions. [2022-01-10 06:48:03,099 INFO L78 Accepts]: Start accepts. Automaton has 63389 states and 101375 transitions. Word has length 134 [2022-01-10 06:48:03,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:48:03,099 INFO L470 AbstractCegarLoop]: Abstraction has 63389 states and 101375 transitions. [2022-01-10 06:48:03,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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 06:48:03,100 INFO L276 IsEmpty]: Start isEmpty. Operand 63389 states and 101375 transitions. [2022-01-10 06:48:03,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 06:48:03,127 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:48:03,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:48:03,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-01-10 06:48:03,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:48:03,337 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:48:03,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:48:03,337 INFO L85 PathProgramCache]: Analyzing trace with hash -121919422, now seen corresponding path program 1 times [2022-01-10 06:48:03,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:48:03,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69774035] [2022-01-10 06:48:03,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:48:03,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:48:03,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:48:03,339 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:48:03,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 06:48:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:48:03,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:48:03,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:48:04,044 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 06:48:04,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:48:04,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:48:04,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69774035] [2022-01-10 06:48:04,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69774035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:48:04,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:48:04,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:48:04,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072421530] [2022-01-10 06:48:04,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:48:04,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:48:04,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:48:04,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:48:04,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:48:04,046 INFO L87 Difference]: Start difference. First operand 63389 states and 101375 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 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 06:48:05,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:48:05,197 INFO L93 Difference]: Finished difference Result 89895 states and 143976 transitions. [2022-01-10 06:48:05,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:48:05,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 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 136 [2022-01-10 06:48:05,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:48:05,309 INFO L225 Difference]: With dead ends: 89895 [2022-01-10 06:48:05,309 INFO L226 Difference]: Without dead ends: 64885 [2022-01-10 06:48:05,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:48:05,348 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 355 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:48:05,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 2095 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 124 Unchecked, 0.1s Time] [2022-01-10 06:48:05,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64885 states. [2022-01-10 06:48:06,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64885 to 63757. [2022-01-10 06:48:06,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63757 states, 63756 states have (on average 1.5977006085701737) internal successors, (101863), 63756 states have internal predecessors, (101863), 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 06:48:07,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63757 states to 63757 states and 101863 transitions. [2022-01-10 06:48:07,061 INFO L78 Accepts]: Start accepts. Automaton has 63757 states and 101863 transitions. Word has length 136 [2022-01-10 06:48:07,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:48:07,062 INFO L470 AbstractCegarLoop]: Abstraction has 63757 states and 101863 transitions. [2022-01-10 06:48:07,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 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 06:48:07,062 INFO L276 IsEmpty]: Start isEmpty. Operand 63757 states and 101863 transitions. [2022-01-10 06:48:07,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 06:48:07,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:48:07,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:48:07,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:48:07,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:48:07,292 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:48:07,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:48:07,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1466428480, now seen corresponding path program 1 times [2022-01-10 06:48:07,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:48:07,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187143939] [2022-01-10 06:48:07,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:48:07,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:48:07,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:48:07,294 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:48:07,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 06:48:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:48:07,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:48:07,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:48:07,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:48:07,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:48:07,596 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:48:07,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187143939] [2022-01-10 06:48:07,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187143939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:48:07,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:48:07,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:48:07,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104147095] [2022-01-10 06:48:07,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:48:07,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:48:07,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:48:07,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:48:07,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:48:07,598 INFO L87 Difference]: Start difference. First operand 63757 states and 101863 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 06:48:09,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:48:09,438 INFO L93 Difference]: Finished difference Result 157841 states and 253929 transitions. [2022-01-10 06:48:09,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:48:09,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 136 [2022-01-10 06:48:09,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:48:09,625 INFO L225 Difference]: With dead ends: 157841 [2022-01-10 06:48:09,625 INFO L226 Difference]: Without dead ends: 108495 [2022-01-10 06:48:09,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 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 06:48:09,661 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 151 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:48:09,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 983 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:48:09,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108495 states. [2022-01-10 06:48:11,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108495 to 107917. [2022-01-10 06:48:12,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107917 states, 107916 states have (on average 1.5950832128692687) internal successors, (172135), 107916 states have internal predecessors, (172135), 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 06:48:12,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107917 states to 107917 states and 172135 transitions. [2022-01-10 06:48:12,259 INFO L78 Accepts]: Start accepts. Automaton has 107917 states and 172135 transitions. Word has length 136 [2022-01-10 06:48:12,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:48:12,259 INFO L470 AbstractCegarLoop]: Abstraction has 107917 states and 172135 transitions. [2022-01-10 06:48:12,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 06:48:12,259 INFO L276 IsEmpty]: Start isEmpty. Operand 107917 states and 172135 transitions. [2022-01-10 06:48:12,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 06:48:12,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:48:12,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:48:12,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-01-10 06:48:12,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:48:12,494 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:48:12,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:48:12,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1261721713, now seen corresponding path program 1 times [2022-01-10 06:48:12,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:48:12,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037410156] [2022-01-10 06:48:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:48:12,495 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:48:12,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:48:12,496 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:48:12,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 06:48:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:48:12,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:48:12,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:48:12,838 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 06:48:12,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:48:12,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:48:12,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037410156] [2022-01-10 06:48:12,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037410156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:48:12,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:48:12,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:48:12,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501653122] [2022-01-10 06:48:12,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:48:12,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:48:12,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:48:12,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:48:12,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:48:12,840 INFO L87 Difference]: Start difference. First operand 107917 states and 172135 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 06:48:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:48:16,411 INFO L93 Difference]: Finished difference Result 313367 states and 499373 transitions. [2022-01-10 06:48:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:48:16,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 139 [2022-01-10 06:48:16,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:48:16,905 INFO L225 Difference]: With dead ends: 313367 [2022-01-10 06:48:16,905 INFO L226 Difference]: Without dead ends: 210877 [2022-01-10 06:48:16,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 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 06:48:16,997 INFO L933 BasicCegarLoop]: 916 mSDtfsCounter, 331 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:48:16,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 1406 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:48:17,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210877 states. [2022-01-10 06:48:21,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210877 to 210875. [2022-01-10 06:48:21,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210875 states, 210874 states have (on average 1.586734258372298) internal successors, (334601), 210874 states have internal predecessors, (334601), 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 06:48:22,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210875 states to 210875 states and 334601 transitions. [2022-01-10 06:48:22,693 INFO L78 Accepts]: Start accepts. Automaton has 210875 states and 334601 transitions. Word has length 139 [2022-01-10 06:48:22,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:48:22,693 INFO L470 AbstractCegarLoop]: Abstraction has 210875 states and 334601 transitions. [2022-01-10 06:48:22,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 06:48:22,693 INFO L276 IsEmpty]: Start isEmpty. Operand 210875 states and 334601 transitions. [2022-01-10 06:48:22,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 06:48:22,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:48:22,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:48:22,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 06:48:22,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:48:22,968 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:48:22,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:48:22,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1970411672, now seen corresponding path program 1 times [2022-01-10 06:48:22,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:48:22,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697595978] [2022-01-10 06:48:22,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:48:22,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:48:22,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:48:22,970 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:48:22,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 06:48:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:48:23,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:48:23,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:48:23,238 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 06:48:23,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:48:23,239 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:48:23,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697595978] [2022-01-10 06:48:23,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697595978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:48:23,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:48:23,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:48:23,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398210537] [2022-01-10 06:48:23,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:48:23,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:48:23,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:48:23,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:48:23,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:48:23,240 INFO L87 Difference]: Start difference. First operand 210875 states and 334601 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 06:48:28,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:48:28,410 INFO L93 Difference]: Finished difference Result 418629 states and 662365 transitions. [2022-01-10 06:48:28,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:48:28,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 139 [2022-01-10 06:48:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:48:29,055 INFO L225 Difference]: With dead ends: 418629 [2022-01-10 06:48:29,055 INFO L226 Difference]: Without dead ends: 313309 [2022-01-10 06:48:29,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 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 06:48:29,176 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 461 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:48:29,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 1304 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:48:29,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313309 states. [2022-01-10 06:48:34,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313309 to 210875. [2022-01-10 06:48:34,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210875 states, 210874 states have (on average 1.5865018921251552) internal successors, (334552), 210874 states have internal predecessors, (334552), 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 06:48:35,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210875 states to 210875 states and 334552 transitions. [2022-01-10 06:48:35,663 INFO L78 Accepts]: Start accepts. Automaton has 210875 states and 334552 transitions. Word has length 139 [2022-01-10 06:48:35,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:48:35,663 INFO L470 AbstractCegarLoop]: Abstraction has 210875 states and 334552 transitions. [2022-01-10 06:48:35,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 06:48:35,664 INFO L276 IsEmpty]: Start isEmpty. Operand 210875 states and 334552 transitions. [2022-01-10 06:48:35,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 06:48:35,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:48:35,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:48:35,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-01-10 06:48:35,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:48:35,907 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:48:35,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:48:35,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1129805825, now seen corresponding path program 1 times [2022-01-10 06:48:35,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:48:35,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426770536] [2022-01-10 06:48:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:48:35,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:48:35,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:48:35,909 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:48:35,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 06:48:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:48:36,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:48:36,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:48:36,149 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 06:48:36,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:48:36,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:48:36,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426770536] [2022-01-10 06:48:36,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426770536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:48:36,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:48:36,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:48:36,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089126132] [2022-01-10 06:48:36,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:48:36,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:48:36,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:48:36,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:48:36,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:48:36,151 INFO L87 Difference]: Start difference. First operand 210875 states and 334552 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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)