/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-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:19:26,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:19:26,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:19:26,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 07:19:26,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:19:26,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:19:26,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:19:26,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:19:26,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:19:26,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:19:26,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:19:26,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:19:26,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:19:26,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:19:26,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:19:26,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:19:26,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:19:26,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:19:26,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:19:26,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:19:26,519 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 07:19:26,543 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:19:26,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:19:26,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:19:26,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:19:26,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:19:26,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:19:26,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:19:26,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:19:26,545 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:19:26,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:19:26,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:19:26,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:19:26,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:19:26,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:19:26,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:19:26,546 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:19:26,546 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:19:26,546 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:19:26,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:19:26,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:19:26,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:19:26,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:19:26,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:19:26,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:19:26,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:19:26,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:19:26,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:19:26,548 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:19:26,548 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:19:26,548 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:19:26,548 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:19:26,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:19:26,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:19:26,548 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:19:26,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:19:26,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:19:26,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:19:26,770 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:19:26,770 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:19:26,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 07:19:26,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7b414567/6e20a2fcc0104f4aab1f629cfafcc0f5/FLAG2901be9e6 [2022-01-10 07:19:27,194 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:19:27,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 07:19:27,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7b414567/6e20a2fcc0104f4aab1f629cfafcc0f5/FLAG2901be9e6 [2022-01-10 07:19:27,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7b414567/6e20a2fcc0104f4aab1f629cfafcc0f5 [2022-01-10 07:19:27,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:19:27,576 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:19:27,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:19:27,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:19:27,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:19:27,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:19:27" (1/1) ... [2022-01-10 07:19:27,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@202a335e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:27, skipping insertion in model container [2022-01-10 07:19:27,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:19:27" (1/1) ... [2022-01-10 07:19:27,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:19:27,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:19:27,853 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-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7669,7682] [2022-01-10 07:19:27,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:19:27,904 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:19:27,952 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-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7669,7682] [2022-01-10 07:19:27,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:19:28,012 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:19:28,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:28 WrapperNode [2022-01-10 07:19:28,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:19:28,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:19:28,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:19:28,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:19:28,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:28" (1/1) ... [2022-01-10 07:19:28,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:28" (1/1) ... [2022-01-10 07:19:28,066 INFO L137 Inliner]: procedures = 27, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 552 [2022-01-10 07:19:28,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:19:28,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:19:28,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:19:28,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:19:28,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:28" (1/1) ... [2022-01-10 07:19:28,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:28" (1/1) ... [2022-01-10 07:19:28,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:28" (1/1) ... [2022-01-10 07:19:28,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:28" (1/1) ... [2022-01-10 07:19:28,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:28" (1/1) ... [2022-01-10 07:19:28,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:28" (1/1) ... [2022-01-10 07:19:28,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:28" (1/1) ... [2022-01-10 07:19:28,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:19:28,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:19:28,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:19:28,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:19:28,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:28" (1/1) ... [2022-01-10 07:19:28,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:19:28,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:19:28,159 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 07:19:28,166 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 07:19:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:19:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:19:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:19:28,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:19:28,317 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:19:28,318 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:19:28,651 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:19:28,656 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:19:28,656 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:19:28,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:19:28 BoogieIcfgContainer [2022-01-10 07:19:28,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:19:28,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:19:28,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:19:28,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:19:28,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:19:27" (1/3) ... [2022-01-10 07:19:28,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e111c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:19:28, skipping insertion in model container [2022-01-10 07:19:28,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:19:28" (2/3) ... [2022-01-10 07:19:28,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e111c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:19:28, skipping insertion in model container [2022-01-10 07:19:28,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:19:28" (3/3) ... [2022-01-10 07:19:28,663 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 07:19:28,666 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:19:28,666 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 07:19:28,696 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:19:28,700 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 07:19:28,700 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 07:19:28,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 137 states have internal predecessors, (237), 0 states have call successors, (0), 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 07:19:28,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 07:19:28,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:28,722 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] [2022-01-10 07:19:28,723 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:28,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:28,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2006546999, now seen corresponding path program 1 times [2022-01-10 07:19:28,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:28,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986049281] [2022-01-10 07:19:28,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:28,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:28,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:28,763 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 07:19:28,765 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 07:19:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:28,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:19:28,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:29,680 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 07:19:29,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:29,680 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:29,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986049281] [2022-01-10 07:19:29,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986049281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:29,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:29,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:19:29,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911729443] [2022-01-10 07:19:29,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:29,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:19:29,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:29,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:19:29,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:19:29,708 INFO L87 Difference]: Start difference. First operand has 138 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 137 states have internal predecessors, (237), 0 states have call successors, (0), 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 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:29,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:29,794 INFO L93 Difference]: Finished difference Result 240 states and 386 transitions. [2022-01-10 07:19:29,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:19:29,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-01-10 07:19:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:29,803 INFO L225 Difference]: With dead ends: 240 [2022-01-10 07:19:29,803 INFO L226 Difference]: Without dead ends: 140 [2022-01-10 07:19:29,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:19:29,807 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 212 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:29,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 358 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2022-01-10 07:19:29,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-01-10 07:19:29,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2022-01-10 07:19:29,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.364963503649635) internal successors, (187), 137 states have internal predecessors, (187), 0 states have call successors, (0), 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 07:19:29,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 187 transitions. [2022-01-10 07:19:29,834 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 187 transitions. Word has length 87 [2022-01-10 07:19:29,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:29,835 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 187 transitions. [2022-01-10 07:19:29,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:29,835 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 187 transitions. [2022-01-10 07:19:29,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 07:19:29,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:29,837 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] [2022-01-10 07:19:29,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 07:19:30,044 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 07:19:30,044 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:30,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:30,045 INFO L85 PathProgramCache]: Analyzing trace with hash 819926446, now seen corresponding path program 1 times [2022-01-10 07:19:30,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:30,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470979151] [2022-01-10 07:19:30,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:30,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:30,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:30,047 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 07:19:30,048 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 07:19:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:30,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:19:30,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:30,355 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 07:19:30,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:30,357 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:30,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470979151] [2022-01-10 07:19:30,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470979151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:30,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:30,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:19:30,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955887801] [2022-01-10 07:19:30,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:30,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:19:30,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:30,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:19:30,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:19:30,362 INFO L87 Difference]: Start difference. First operand 138 states and 187 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:30,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:30,391 INFO L93 Difference]: Finished difference Result 294 states and 434 transitions. [2022-01-10 07:19:30,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:19:30,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-01-10 07:19:30,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:30,396 INFO L225 Difference]: With dead ends: 294 [2022-01-10 07:19:30,396 INFO L226 Difference]: Without dead ends: 212 [2022-01-10 07:19:30,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 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 07:19:30,397 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 115 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 407 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 07:19:30,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 407 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:19:30,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-01-10 07:19:30,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2022-01-10 07:19:30,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.444976076555024) internal successors, (302), 209 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:30,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 302 transitions. [2022-01-10 07:19:30,411 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 302 transitions. Word has length 87 [2022-01-10 07:19:30,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:30,411 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 302 transitions. [2022-01-10 07:19:30,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 302 transitions. [2022-01-10 07:19:30,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 07:19:30,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:30,412 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] [2022-01-10 07:19:30,421 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 07:19:30,612 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 07:19:30,613 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:30,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:30,614 INFO L85 PathProgramCache]: Analyzing trace with hash 161590262, now seen corresponding path program 1 times [2022-01-10 07:19:30,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:30,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829197214] [2022-01-10 07:19:30,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:30,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:30,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:30,617 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 07:19:30,617 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 07:19:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:30,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:19:30,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:31,170 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 07:19:31,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:31,170 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:31,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829197214] [2022-01-10 07:19:31,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829197214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:31,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:31,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:19:31,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779997368] [2022-01-10 07:19:31,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:31,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:19:31,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:31,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:19:31,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:19:31,176 INFO L87 Difference]: Start difference. First operand 210 states and 302 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:19:31,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:31,241 INFO L93 Difference]: Finished difference Result 371 states and 557 transitions. [2022-01-10 07:19:31,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:19:31,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 07:19:31,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:31,244 INFO L225 Difference]: With dead ends: 371 [2022-01-10 07:19:31,244 INFO L226 Difference]: Without dead ends: 217 [2022-01-10 07:19:31,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:19:31,247 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 75 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:31,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 279 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2022-01-10 07:19:31,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-01-10 07:19:31,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2022-01-10 07:19:31,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.439252336448598) internal successors, (308), 214 states have internal predecessors, (308), 0 states have call successors, (0), 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 07:19:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 308 transitions. [2022-01-10 07:19:31,263 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 308 transitions. Word has length 88 [2022-01-10 07:19:31,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:31,263 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 308 transitions. [2022-01-10 07:19:31,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:19:31,264 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 308 transitions. [2022-01-10 07:19:31,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 07:19:31,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:31,265 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] [2022-01-10 07:19:31,277 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 07:19:31,477 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 07:19:31,478 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:31,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:31,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1488975451, now seen corresponding path program 1 times [2022-01-10 07:19:31,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:31,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386761154] [2022-01-10 07:19:31,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:31,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:31,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:31,480 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 07:19:31,481 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 07:19:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:31,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:19:31,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:31,712 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 07:19:31,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:31,712 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:31,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386761154] [2022-01-10 07:19:31,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386761154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:31,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:31,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:19:31,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972063132] [2022-01-10 07:19:31,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:31,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:19:31,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:31,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:19:31,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:19:31,714 INFO L87 Difference]: Start difference. First operand 215 states and 308 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:19:31,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:31,729 INFO L93 Difference]: Finished difference Result 507 states and 772 transitions. [2022-01-10 07:19:31,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:19:31,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 07:19:31,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:31,731 INFO L225 Difference]: With dead ends: 507 [2022-01-10 07:19:31,731 INFO L226 Difference]: Without dead ends: 353 [2022-01-10 07:19:31,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 86 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 07:19:31,732 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 110 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 403 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 07:19:31,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 403 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:19:31,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-01-10 07:19:31,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 351. [2022-01-10 07:19:31,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.497142857142857) internal successors, (524), 350 states have internal predecessors, (524), 0 states have call successors, (0), 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 07:19:31,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 524 transitions. [2022-01-10 07:19:31,741 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 524 transitions. Word has length 88 [2022-01-10 07:19:31,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:31,741 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 524 transitions. [2022-01-10 07:19:31,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 07:19:31,742 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 524 transitions. [2022-01-10 07:19:31,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 07:19:31,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:31,742 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] [2022-01-10 07:19:31,765 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 07:19:31,950 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 07:19:31,950 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:31,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:31,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1459231275, now seen corresponding path program 1 times [2022-01-10 07:19:31,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:31,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455302197] [2022-01-10 07:19:31,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:31,951 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:31,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:31,952 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 07:19:31,953 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 07:19:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:32,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:19:32,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:32,336 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 07:19:32,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:32,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:32,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455302197] [2022-01-10 07:19:32,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455302197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:32,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:32,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:19:32,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966693133] [2022-01-10 07:19:32,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:32,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:19:32,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:32,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:19:32,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:19:32,338 INFO L87 Difference]: Start difference. First operand 351 states and 524 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 07:19:32,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:32,357 INFO L93 Difference]: Finished difference Result 899 states and 1394 transitions. [2022-01-10 07:19:32,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:19:32,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-01-10 07:19:32,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:32,359 INFO L225 Difference]: With dead ends: 899 [2022-01-10 07:19:32,359 INFO L226 Difference]: Without dead ends: 609 [2022-01-10 07:19:32,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 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 07:19:32,360 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 105 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 399 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 07:19:32,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 399 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:19:32,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-01-10 07:19:32,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 607. [2022-01-10 07:19:32,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 606 states have (on average 1.5313531353135315) internal successors, (928), 606 states have internal predecessors, (928), 0 states have call successors, (0), 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 07:19:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 928 transitions. [2022-01-10 07:19:32,374 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 928 transitions. Word has length 89 [2022-01-10 07:19:32,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:32,374 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 928 transitions. [2022-01-10 07:19:32,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 07:19:32,374 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 928 transitions. [2022-01-10 07:19:32,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:19:32,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:32,375 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] [2022-01-10 07:19:32,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 07:19:32,582 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 07:19:32,583 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:32,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:32,584 INFO L85 PathProgramCache]: Analyzing trace with hash -493647415, now seen corresponding path program 1 times [2022-01-10 07:19:32,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:32,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003804857] [2022-01-10 07:19:32,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:32,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:32,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:32,598 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 07:19:32,614 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 07:19:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:32,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:19:32,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:33,155 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 07:19:33,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:33,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:33,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003804857] [2022-01-10 07:19:33,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003804857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:33,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:33,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:19:33,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574198549] [2022-01-10 07:19:33,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:33,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:19:33,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:33,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:19:33,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:19:33,157 INFO L87 Difference]: Start difference. First operand 607 states and 928 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:33,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:33,234 INFO L93 Difference]: Finished difference Result 1165 states and 1810 transitions. [2022-01-10 07:19:33,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:19:33,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-10 07:19:33,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:33,237 INFO L225 Difference]: With dead ends: 1165 [2022-01-10 07:19:33,237 INFO L226 Difference]: Without dead ends: 619 [2022-01-10 07:19:33,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:19:33,238 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 49 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:33,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 347 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time] [2022-01-10 07:19:33,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-01-10 07:19:33,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2022-01-10 07:19:33,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 616 states have (on average 1.5275974025974026) internal successors, (941), 616 states have internal predecessors, (941), 0 states have call successors, (0), 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 07:19:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 941 transitions. [2022-01-10 07:19:33,264 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 941 transitions. Word has length 90 [2022-01-10 07:19:33,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:33,264 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 941 transitions. [2022-01-10 07:19:33,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:33,265 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 941 transitions. [2022-01-10 07:19:33,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:19:33,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:33,265 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] [2022-01-10 07:19:33,285 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 07:19:33,483 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 07:19:33,484 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:33,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:33,484 INFO L85 PathProgramCache]: Analyzing trace with hash 480315694, now seen corresponding path program 1 times [2022-01-10 07:19:33,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:33,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194010961] [2022-01-10 07:19:33,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:33,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:33,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:33,487 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 07:19:33,496 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 07:19:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:33,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:19:33,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:33,731 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 07:19:33,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:33,732 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:33,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194010961] [2022-01-10 07:19:33,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194010961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:33,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:33,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:19:33,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161599139] [2022-01-10 07:19:33,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:33,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:19:33,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:33,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:19:33,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:19:33,733 INFO L87 Difference]: Start difference. First operand 617 states and 941 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:33,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:33,773 INFO L93 Difference]: Finished difference Result 1645 states and 2567 transitions. [2022-01-10 07:19:33,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:19:33,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-10 07:19:33,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:33,777 INFO L225 Difference]: With dead ends: 1645 [2022-01-10 07:19:33,777 INFO L226 Difference]: Without dead ends: 1099 [2022-01-10 07:19:33,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 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 07:19:33,778 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 100 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 395 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 07:19:33,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 395 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:19:33,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2022-01-10 07:19:33,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1097. [2022-01-10 07:19:33,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 1096 states have (on average 1.5447080291970803) internal successors, (1693), 1096 states have internal predecessors, (1693), 0 states have call successors, (0), 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 07:19:33,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1693 transitions. [2022-01-10 07:19:33,803 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1693 transitions. Word has length 90 [2022-01-10 07:19:33,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:33,803 INFO L470 AbstractCegarLoop]: Abstraction has 1097 states and 1693 transitions. [2022-01-10 07:19:33,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:33,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1693 transitions. [2022-01-10 07:19:33,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 07:19:33,804 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:33,804 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] [2022-01-10 07:19:33,813 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 07:19:34,011 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 07:19:34,011 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:34,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:34,012 INFO L85 PathProgramCache]: Analyzing trace with hash 64547220, now seen corresponding path program 1 times [2022-01-10 07:19:34,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:34,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864611506] [2022-01-10 07:19:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:34,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:34,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:34,014 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 07:19:34,027 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 07:19:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:34,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:19:34,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:34,288 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 07:19:34,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:34,288 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:34,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864611506] [2022-01-10 07:19:34,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864611506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:34,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:34,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:19:34,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723699079] [2022-01-10 07:19:34,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:34,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:19:34,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:34,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:19:34,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:19:34,290 INFO L87 Difference]: Start difference. First operand 1097 states and 1693 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:34,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:34,339 INFO L93 Difference]: Finished difference Result 3021 states and 4719 transitions. [2022-01-10 07:19:34,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:19:34,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-01-10 07:19:34,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:34,345 INFO L225 Difference]: With dead ends: 3021 [2022-01-10 07:19:34,345 INFO L226 Difference]: Without dead ends: 1995 [2022-01-10 07:19:34,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 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 07:19:34,348 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 95 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 391 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 07:19:34,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 391 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:19:34,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2022-01-10 07:19:34,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1993. [2022-01-10 07:19:34,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1992 states have (on average 1.5486947791164658) internal successors, (3085), 1992 states have internal predecessors, (3085), 0 states have call successors, (0), 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 07:19:34,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3085 transitions. [2022-01-10 07:19:34,394 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3085 transitions. Word has length 91 [2022-01-10 07:19:34,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:34,394 INFO L470 AbstractCegarLoop]: Abstraction has 1993 states and 3085 transitions. [2022-01-10 07:19:34,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:19:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3085 transitions. [2022-01-10 07:19:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 07:19:34,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:34,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:19:34,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 07:19:34,604 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 07:19:34,604 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:34,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:34,604 INFO L85 PathProgramCache]: Analyzing trace with hash 640777012, now seen corresponding path program 1 times [2022-01-10 07:19:34,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:34,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438822423] [2022-01-10 07:19:34,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:34,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:34,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:34,606 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 07:19:34,608 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 07:19:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:34,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:19:34,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:35,138 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 07:19:35,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:35,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:35,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438822423] [2022-01-10 07:19:35,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438822423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:35,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:35,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:19:35,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839967835] [2022-01-10 07:19:35,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:35,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:19:35,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:35,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:19:35,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:19:35,140 INFO L87 Difference]: Start difference. First operand 1993 states and 3085 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 07:19:35,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:35,220 INFO L93 Difference]: Finished difference Result 3927 states and 6111 transitions. [2022-01-10 07:19:35,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:19:35,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 07:19:35,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:35,226 INFO L225 Difference]: With dead ends: 3927 [2022-01-10 07:19:35,226 INFO L226 Difference]: Without dead ends: 2005 [2022-01-10 07:19:35,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:19:35,228 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 55 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:35,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 297 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 34 Unchecked, 0.0s Time] [2022-01-10 07:19:35,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2022-01-10 07:19:35,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 2003. [2022-01-10 07:19:35,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 2002 states have (on average 1.5474525474525473) internal successors, (3098), 2002 states have internal predecessors, (3098), 0 states have call successors, (0), 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 07:19:35,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 3098 transitions. [2022-01-10 07:19:35,269 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 3098 transitions. Word has length 92 [2022-01-10 07:19:35,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:35,269 INFO L470 AbstractCegarLoop]: Abstraction has 2003 states and 3098 transitions. [2022-01-10 07:19:35,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 07:19:35,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 3098 transitions. [2022-01-10 07:19:35,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 07:19:35,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:35,270 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] [2022-01-10 07:19:35,293 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 07:19:35,477 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 07:19:35,477 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:35,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:35,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1412640665, now seen corresponding path program 1 times [2022-01-10 07:19:35,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:35,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315063990] [2022-01-10 07:19:35,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:35,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:35,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:35,483 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 07:19:35,485 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 07:19:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:35,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:19:35,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:35,709 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 07:19:35,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:35,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:35,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315063990] [2022-01-10 07:19:35,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315063990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:35,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:35,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:19:35,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759128243] [2022-01-10 07:19:35,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:35,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:19:35,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:35,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:19:35,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:19:35,710 INFO L87 Difference]: Start difference. First operand 2003 states and 3098 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 07:19:35,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:35,792 INFO L93 Difference]: Finished difference Result 5591 states and 8700 transitions. [2022-01-10 07:19:35,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:19:35,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 07:19:35,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:35,802 INFO L225 Difference]: With dead ends: 5591 [2022-01-10 07:19:35,803 INFO L226 Difference]: Without dead ends: 3669 [2022-01-10 07:19:35,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 90 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 07:19:35,806 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 90 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 387 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 07:19:35,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 387 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:19:35,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3669 states. [2022-01-10 07:19:35,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3669 to 3667. [2022-01-10 07:19:35,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3667 states, 3666 states have (on average 1.5433715220949265) internal successors, (5658), 3666 states have internal predecessors, (5658), 0 states have call successors, (0), 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 07:19:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3667 states to 3667 states and 5658 transitions. [2022-01-10 07:19:35,900 INFO L78 Accepts]: Start accepts. Automaton has 3667 states and 5658 transitions. Word has length 92 [2022-01-10 07:19:35,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:35,900 INFO L470 AbstractCegarLoop]: Abstraction has 3667 states and 5658 transitions. [2022-01-10 07:19:35,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 07:19:35,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3667 states and 5658 transitions. [2022-01-10 07:19:35,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 07:19:35,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:35,901 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] [2022-01-10 07:19:35,919 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 07:19:36,108 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 07:19:36,108 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:36,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:36,109 INFO L85 PathProgramCache]: Analyzing trace with hash -545873402, now seen corresponding path program 1 times [2022-01-10 07:19:36,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:36,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441909205] [2022-01-10 07:19:36,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:36,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:36,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:36,110 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 07:19:36,112 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 07:19:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:36,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:19:36,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:36,637 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 07:19:36,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:36,638 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:36,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441909205] [2022-01-10 07:19:36,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441909205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:36,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:36,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:19:36,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448034357] [2022-01-10 07:19:36,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:36,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:19:36,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:36,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:19:36,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:19:36,639 INFO L87 Difference]: Start difference. First operand 3667 states and 5658 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 07:19:36,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:36,738 INFO L93 Difference]: Finished difference Result 7260 states and 11237 transitions. [2022-01-10 07:19:36,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:19:36,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-10 07:19:36,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:36,748 INFO L225 Difference]: With dead ends: 7260 [2022-01-10 07:19:36,748 INFO L226 Difference]: Without dead ends: 3674 [2022-01-10 07:19:36,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:19:36,752 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 50 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:36,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 302 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2022-01-10 07:19:36,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2022-01-10 07:19:36,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3672. [2022-01-10 07:19:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3672 states, 3671 states have (on average 1.542903840915282) internal successors, (5664), 3671 states have internal predecessors, (5664), 0 states have call successors, (0), 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 07:19:36,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 5664 transitions. [2022-01-10 07:19:36,829 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 5664 transitions. Word has length 93 [2022-01-10 07:19:36,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:36,830 INFO L470 AbstractCegarLoop]: Abstraction has 3672 states and 5664 transitions. [2022-01-10 07:19:36,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 07:19:36,830 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 5664 transitions. [2022-01-10 07:19:36,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 07:19:36,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:36,831 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] [2022-01-10 07:19:36,850 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 07:19:37,038 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 07:19:37,038 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:37,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:37,038 INFO L85 PathProgramCache]: Analyzing trace with hash 727994603, now seen corresponding path program 1 times [2022-01-10 07:19:37,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:37,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047112057] [2022-01-10 07:19:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:37,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:37,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:37,062 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 07:19:37,063 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 07:19:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:37,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:19:37,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:38,524 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 07:19:38,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:38,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:38,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047112057] [2022-01-10 07:19:38,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047112057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:38,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:38,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 07:19:38,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326783330] [2022-01-10 07:19:38,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:38,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:19:38,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:38,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:19:38,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:19:38,526 INFO L87 Difference]: Start difference. First operand 3672 states and 5664 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 07:19:39,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:39,212 INFO L93 Difference]: Finished difference Result 32360 states and 50216 transitions. [2022-01-10 07:19:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:19:39,213 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-10 07:19:39,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:39,298 INFO L225 Difference]: With dead ends: 32360 [2022-01-10 07:19:39,299 INFO L226 Difference]: Without dead ends: 28774 [2022-01-10 07:19:39,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:19:39,312 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 1558 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:39,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1558 Valid, 1538 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:19:39,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28774 states. [2022-01-10 07:19:39,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28774 to 10840. [2022-01-10 07:19:39,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10840 states, 10839 states have (on average 1.5322446720177139) internal successors, (16608), 10839 states have internal predecessors, (16608), 0 states have call successors, (0), 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 07:19:39,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10840 states to 10840 states and 16608 transitions. [2022-01-10 07:19:39,870 INFO L78 Accepts]: Start accepts. Automaton has 10840 states and 16608 transitions. Word has length 93 [2022-01-10 07:19:39,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:39,870 INFO L470 AbstractCegarLoop]: Abstraction has 10840 states and 16608 transitions. [2022-01-10 07:19:39,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 07:19:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 10840 states and 16608 transitions. [2022-01-10 07:19:39,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 07:19:39,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:39,872 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] [2022-01-10 07:19:39,890 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 07:19:40,079 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 07:19:40,079 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:40,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:40,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1398673945, now seen corresponding path program 1 times [2022-01-10 07:19:40,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:40,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582614438] [2022-01-10 07:19:40,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:40,080 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:40,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:40,081 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 07:19:40,082 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 07:19:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:40,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:19:40,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:40,306 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 07:19:40,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:40,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:40,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582614438] [2022-01-10 07:19:40,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582614438] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:40,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:40,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:19:40,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660874279] [2022-01-10 07:19:40,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:40,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:19:40,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:40,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:19:40,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:19:40,307 INFO L87 Difference]: Start difference. First operand 10840 states and 16608 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 07:19:40,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:40,932 INFO L93 Difference]: Finished difference Result 31324 states and 47842 transitions. [2022-01-10 07:19:40,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:19:40,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-01-10 07:19:40,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:40,966 INFO L225 Difference]: With dead ends: 31324 [2022-01-10 07:19:40,966 INFO L226 Difference]: Without dead ends: 20570 [2022-01-10 07:19:40,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 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 07:19:40,982 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 80 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:40,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 360 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:19:40,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20570 states. [2022-01-10 07:19:41,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20570 to 20376. [2022-01-10 07:19:41,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20376 states, 20375 states have (on average 1.5030184049079756) internal successors, (30624), 20375 states have internal predecessors, (30624), 0 states have call successors, (0), 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 07:19:41,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20376 states to 20376 states and 30624 transitions. [2022-01-10 07:19:41,732 INFO L78 Accepts]: Start accepts. Automaton has 20376 states and 30624 transitions. Word has length 95 [2022-01-10 07:19:41,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:41,732 INFO L470 AbstractCegarLoop]: Abstraction has 20376 states and 30624 transitions. [2022-01-10 07:19:41,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 07:19:41,732 INFO L276 IsEmpty]: Start isEmpty. Operand 20376 states and 30624 transitions. [2022-01-10 07:19:41,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 07:19:41,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:41,733 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] [2022-01-10 07:19:41,752 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 07:19:41,939 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 07:19:41,940 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:41,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:41,940 INFO L85 PathProgramCache]: Analyzing trace with hash 232587604, now seen corresponding path program 1 times [2022-01-10 07:19:41,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:41,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254386923] [2022-01-10 07:19:41,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:41,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:41,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:41,942 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 07:19:41,944 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 07:19:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:42,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:19:42,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:42,122 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 07:19:42,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:42,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:42,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254386923] [2022-01-10 07:19:42,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254386923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:42,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:42,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:19:42,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191822800] [2022-01-10 07:19:42,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:42,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:19:42,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:42,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:19:42,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:19:42,123 INFO L87 Difference]: Start difference. First operand 20376 states and 30624 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 07:19:43,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:43,093 INFO L93 Difference]: Finished difference Result 39965 states and 60579 transitions. [2022-01-10 07:19:43,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:19:43,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-01-10 07:19:43,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:43,178 INFO L225 Difference]: With dead ends: 39965 [2022-01-10 07:19:43,178 INFO L226 Difference]: Without dead ends: 29210 [2022-01-10 07:19:43,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 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 07:19:43,200 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 117 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 414 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 07:19:43,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 414 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:19:43,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29210 states. [2022-01-10 07:19:44,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29210 to 29208. [2022-01-10 07:19:44,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29208 states, 29207 states have (on average 1.5020714212346356) internal successors, (43871), 29207 states have internal predecessors, (43871), 0 states have call successors, (0), 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 07:19:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29208 states to 29208 states and 43871 transitions. [2022-01-10 07:19:44,309 INFO L78 Accepts]: Start accepts. Automaton has 29208 states and 43871 transitions. Word has length 96 [2022-01-10 07:19:44,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:44,311 INFO L470 AbstractCegarLoop]: Abstraction has 29208 states and 43871 transitions. [2022-01-10 07:19:44,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 07:19:44,311 INFO L276 IsEmpty]: Start isEmpty. Operand 29208 states and 43871 transitions. [2022-01-10 07:19:44,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 07:19:44,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:44,313 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] [2022-01-10 07:19:44,322 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 07:19:44,520 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 07:19:44,521 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:44,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:44,521 INFO L85 PathProgramCache]: Analyzing trace with hash 239953701, now seen corresponding path program 1 times [2022-01-10 07:19:44,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:44,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771558311] [2022-01-10 07:19:44,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:44,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:44,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:44,523 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 07:19:44,530 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 07:19:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:44,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:19:44,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:44,754 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 07:19:44,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:44,755 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:44,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771558311] [2022-01-10 07:19:44,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771558311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:44,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:44,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:19:44,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025214617] [2022-01-10 07:19:44,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:44,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:19:44,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:44,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:19:44,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:19:44,756 INFO L87 Difference]: Start difference. First operand 29208 states and 43871 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 07:19:46,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:46,736 INFO L93 Difference]: Finished difference Result 53252 states and 79702 transitions. [2022-01-10 07:19:46,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:19:46,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-01-10 07:19:46,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:46,828 INFO L225 Difference]: With dead ends: 53252 [2022-01-10 07:19:46,828 INFO L226 Difference]: Without dead ends: 53250 [2022-01-10 07:19:46,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 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 07:19:46,847 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 244 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:46,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 600 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:19:46,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53250 states. [2022-01-10 07:19:48,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53250 to 30104. [2022-01-10 07:19:48,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30104 states, 30103 states have (on average 1.4850014948676211) internal successors, (44703), 30103 states have internal predecessors, (44703), 0 states have call successors, (0), 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 07:19:48,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30104 states to 30104 states and 44703 transitions. [2022-01-10 07:19:48,220 INFO L78 Accepts]: Start accepts. Automaton has 30104 states and 44703 transitions. Word has length 96 [2022-01-10 07:19:48,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:48,220 INFO L470 AbstractCegarLoop]: Abstraction has 30104 states and 44703 transitions. [2022-01-10 07:19:48,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 07:19:48,220 INFO L276 IsEmpty]: Start isEmpty. Operand 30104 states and 44703 transitions. [2022-01-10 07:19:48,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 07:19:48,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:48,228 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:19:48,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 07:19:48,437 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 07:19:48,438 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:48,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:48,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1758661178, now seen corresponding path program 1 times [2022-01-10 07:19:48,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:48,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749246226] [2022-01-10 07:19:48,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:48,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:48,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:48,440 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 07:19:48,441 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 07:19:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:48,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:19:48,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:48,756 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:19:48,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:48,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:48,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749246226] [2022-01-10 07:19:48,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749246226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:48,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:48,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:19:48,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505956227] [2022-01-10 07:19:48,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:48,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:19:48,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:48,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:19:48,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:19:48,758 INFO L87 Difference]: Start difference. First operand 30104 states and 44703 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 07:19:49,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:49,655 INFO L93 Difference]: Finished difference Result 50508 states and 75294 transitions. [2022-01-10 07:19:49,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:19:49,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 07:19:49,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:49,684 INFO L225 Difference]: With dead ends: 50508 [2022-01-10 07:19:49,685 INFO L226 Difference]: Without dead ends: 20490 [2022-01-10 07:19:49,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 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 07:19:49,718 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 84 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:49,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 406 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:19:49,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20490 states. [2022-01-10 07:19:50,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20490 to 20488. [2022-01-10 07:19:50,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20488 states, 20487 states have (on average 1.4883096597842533) internal successors, (30491), 20487 states have internal predecessors, (30491), 0 states have call successors, (0), 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 07:19:50,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20488 states to 20488 states and 30491 transitions. [2022-01-10 07:19:50,886 INFO L78 Accepts]: Start accepts. Automaton has 20488 states and 30491 transitions. Word has length 131 [2022-01-10 07:19:50,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:50,886 INFO L470 AbstractCegarLoop]: Abstraction has 20488 states and 30491 transitions. [2022-01-10 07:19:50,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 07:19:50,886 INFO L276 IsEmpty]: Start isEmpty. Operand 20488 states and 30491 transitions. [2022-01-10 07:19:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 07:19:50,890 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:50,890 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:19:50,898 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 07:19:51,098 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 07:19:51,098 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:51,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:51,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2098875790, now seen corresponding path program 1 times [2022-01-10 07:19:51,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:51,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977651623] [2022-01-10 07:19:51,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:51,099 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:51,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:51,100 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 07:19:51,102 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 07:19:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:51,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:19:51,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:19:52,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:19:52,955 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:19:52,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:52,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977651623] [2022-01-10 07:19:52,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977651623] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:19:52,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:19:52,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 07:19:52,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684490922] [2022-01-10 07:19:52,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:19:52,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:19:52,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:52,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:19:52,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:19:52,957 INFO L87 Difference]: Start difference. First operand 20488 states and 30491 transitions. Second operand has 16 states, 16 states have (on average 14.875) internal successors, (238), 15 states have internal predecessors, (238), 0 states have call successors, (0), 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 07:19:53,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:53,760 INFO L93 Difference]: Finished difference Result 41252 states and 61248 transitions. [2022-01-10 07:19:53,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 07:19:53,761 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.875) internal successors, (238), 15 states have internal predecessors, (238), 0 states have call successors, (0), 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 07:19:53,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:53,792 INFO L225 Difference]: With dead ends: 41252 [2022-01-10 07:19:53,792 INFO L226 Difference]: Without dead ends: 20898 [2022-01-10 07:19:53,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-01-10 07:19:53,814 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 126 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:53,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 1351 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 209 Unchecked, 0.1s Time] [2022-01-10 07:19:53,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20898 states. [2022-01-10 07:19:54,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20898 to 20512. [2022-01-10 07:19:54,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20512 states, 20511 states have (on average 1.4880308127346302) internal successors, (30521), 20511 states have internal predecessors, (30521), 0 states have call successors, (0), 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 07:19:54,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20512 states to 20512 states and 30521 transitions. [2022-01-10 07:19:54,617 INFO L78 Accepts]: Start accepts. Automaton has 20512 states and 30521 transitions. Word has length 132 [2022-01-10 07:19:54,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:54,617 INFO L470 AbstractCegarLoop]: Abstraction has 20512 states and 30521 transitions. [2022-01-10 07:19:54,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.875) internal successors, (238), 15 states have internal predecessors, (238), 0 states have call successors, (0), 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 07:19:54,617 INFO L276 IsEmpty]: Start isEmpty. Operand 20512 states and 30521 transitions. [2022-01-10 07:19:54,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 07:19:54,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:54,622 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:19:54,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 07:19:54,829 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 07:19:54,830 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:54,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:54,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1129171436, now seen corresponding path program 1 times [2022-01-10 07:19:54,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:54,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809005755] [2022-01-10 07:19:54,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:54,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:54,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:54,836 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 07:19:54,838 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 07:19:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:54,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:19:54,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:55,689 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:19:55,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:19:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:19:56,352 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:56,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809005755] [2022-01-10 07:19:56,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809005755] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:19:56,352 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:19:56,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 07:19:56,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846962515] [2022-01-10 07:19:56,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:19:56,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:19:56,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:56,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:19:56,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:19:56,353 INFO L87 Difference]: Start difference. First operand 20512 states and 30521 transitions. Second operand has 16 states, 16 states have (on average 14.5) internal successors, (232), 15 states have internal predecessors, (232), 0 states have call successors, (0), 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 07:19:57,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:57,335 INFO L93 Difference]: Finished difference Result 40866 states and 60858 transitions. [2022-01-10 07:19:57,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:19:57,336 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.5) internal successors, (232), 15 states have internal predecessors, (232), 0 states have call successors, (0), 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 07:19:57,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:57,366 INFO L225 Difference]: With dead ends: 40866 [2022-01-10 07:19:57,366 INFO L226 Difference]: Without dead ends: 20512 [2022-01-10 07:19:57,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-01-10 07:19:57,388 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 87 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:57,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 1341 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 105 Unchecked, 0.0s Time] [2022-01-10 07:19:57,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20512 states. [2022-01-10 07:19:58,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20512 to 20512. [2022-01-10 07:19:58,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20512 states, 20511 states have (on average 1.4879820584076837) internal successors, (30520), 20511 states have internal predecessors, (30520), 0 states have call successors, (0), 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 07:19:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20512 states to 20512 states and 30520 transitions. [2022-01-10 07:19:58,213 INFO L78 Accepts]: Start accepts. Automaton has 20512 states and 30520 transitions. Word has length 132 [2022-01-10 07:19:58,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:19:58,214 INFO L470 AbstractCegarLoop]: Abstraction has 20512 states and 30520 transitions. [2022-01-10 07:19:58,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.5) internal successors, (232), 15 states have internal predecessors, (232), 0 states have call successors, (0), 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 07:19:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 20512 states and 30520 transitions. [2022-01-10 07:19:58,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 07:19:58,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:19:58,218 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:19:58,226 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 07:19:58,426 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 07:19:58,426 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:19:58,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:19:58,426 INFO L85 PathProgramCache]: Analyzing trace with hash 341503219, now seen corresponding path program 1 times [2022-01-10 07:19:58,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:19:58,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350691315] [2022-01-10 07:19:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:19:58,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:19:58,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:19:58,429 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 07:19:58,433 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 07:19:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:19:58,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:19:58,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:19:59,002 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 07:19:59,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:19:59,003 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:19:59,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350691315] [2022-01-10 07:19:59,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350691315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:19:59,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:19:59,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:19:59,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816710083] [2022-01-10 07:19:59,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:19:59,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:19:59,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:19:59,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:19:59,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:19:59,006 INFO L87 Difference]: Start difference. First operand 20512 states and 30520 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 07:19:59,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:19:59,907 INFO L93 Difference]: Finished difference Result 40890 states and 60885 transitions. [2022-01-10 07:19:59,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:19:59,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 07:19:59,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:19:59,936 INFO L225 Difference]: With dead ends: 40890 [2022-01-10 07:19:59,936 INFO L226 Difference]: Without dead ends: 20512 [2022-01-10 07:19:59,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:19:59,967 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 36 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:19:59,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 423 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 67 Unchecked, 0.1s Time] [2022-01-10 07:19:59,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20512 states. [2022-01-10 07:20:00,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20512 to 20512. [2022-01-10 07:20:00,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20512 states, 20511 states have (on average 1.4879333040807372) internal successors, (30519), 20511 states have internal predecessors, (30519), 0 states have call successors, (0), 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 07:20:00,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20512 states to 20512 states and 30519 transitions. [2022-01-10 07:20:00,770 INFO L78 Accepts]: Start accepts. Automaton has 20512 states and 30519 transitions. Word has length 132 [2022-01-10 07:20:00,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:00,770 INFO L470 AbstractCegarLoop]: Abstraction has 20512 states and 30519 transitions. [2022-01-10 07:20:00,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 07:20:00,770 INFO L276 IsEmpty]: Start isEmpty. Operand 20512 states and 30519 transitions. [2022-01-10 07:20:00,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 07:20:00,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:00,783 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:00,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:00,995 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 07:20:00,995 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:00,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:00,995 INFO L85 PathProgramCache]: Analyzing trace with hash 462858638, now seen corresponding path program 1 times [2022-01-10 07:20:00,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:00,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399356080] [2022-01-10 07:20:00,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:00,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:00,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:00,997 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 07:20:00,998 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 07:20:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:01,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:20:01,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 07:20:01,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:01,591 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:01,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399356080] [2022-01-10 07:20:01,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399356080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:01,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:01,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:20:01,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233186663] [2022-01-10 07:20:01,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:01,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:20:01,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:01,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:20:01,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:20:01,592 INFO L87 Difference]: Start difference. First operand 20512 states and 30519 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 07:20:02,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:02,343 INFO L93 Difference]: Finished difference Result 40902 states and 60900 transitions. [2022-01-10 07:20:02,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:20:02,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 07:20:02,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:02,371 INFO L225 Difference]: With dead ends: 40902 [2022-01-10 07:20:02,372 INFO L226 Difference]: Without dead ends: 20512 [2022-01-10 07:20:02,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:20:02,393 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 64 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:02,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 282 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2022-01-10 07:20:02,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20512 states. [2022-01-10 07:20:03,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20512 to 20512. [2022-01-10 07:20:03,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20512 states, 20511 states have (on average 1.4878845497537907) internal successors, (30518), 20511 states have internal predecessors, (30518), 0 states have call successors, (0), 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 07:20:03,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20512 states to 20512 states and 30518 transitions. [2022-01-10 07:20:03,439 INFO L78 Accepts]: Start accepts. Automaton has 20512 states and 30518 transitions. Word has length 132 [2022-01-10 07:20:03,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:03,439 INFO L470 AbstractCegarLoop]: Abstraction has 20512 states and 30518 transitions. [2022-01-10 07:20:03,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 07:20:03,439 INFO L276 IsEmpty]: Start isEmpty. Operand 20512 states and 30518 transitions. [2022-01-10 07:20:03,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 07:20:03,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:03,443 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:03,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:03,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:03,651 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:03,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:03,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2108932297, now seen corresponding path program 1 times [2022-01-10 07:20:03,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:03,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911350051] [2022-01-10 07:20:03,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:03,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:03,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:03,655 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:03,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:20:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:03,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:20:03,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 07:20:03,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:03,991 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:03,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911350051] [2022-01-10 07:20:03,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911350051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:03,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:03,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:20:03,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438956946] [2022-01-10 07:20:03,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:03,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:20:03,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:03,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:20:03,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:20:03,992 INFO L87 Difference]: Start difference. First operand 20512 states and 30518 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 07:20:05,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:05,052 INFO L93 Difference]: Finished difference Result 40908 states and 60907 transitions. [2022-01-10 07:20:05,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:20:05,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 133 [2022-01-10 07:20:05,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:05,082 INFO L225 Difference]: With dead ends: 40908 [2022-01-10 07:20:05,082 INFO L226 Difference]: Without dead ends: 20512 [2022-01-10 07:20:05,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 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 07:20:05,106 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 119 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:05,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 257 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:20:05,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20512 states. [2022-01-10 07:20:05,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20512 to 20512. [2022-01-10 07:20:05,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20512 states, 20511 states have (on average 1.4784262103261665) internal successors, (30324), 20511 states have internal predecessors, (30324), 0 states have call successors, (0), 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 07:20:05,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20512 states to 20512 states and 30324 transitions. [2022-01-10 07:20:05,950 INFO L78 Accepts]: Start accepts. Automaton has 20512 states and 30324 transitions. Word has length 133 [2022-01-10 07:20:05,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:05,950 INFO L470 AbstractCegarLoop]: Abstraction has 20512 states and 30324 transitions. [2022-01-10 07:20:05,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 07:20:05,950 INFO L276 IsEmpty]: Start isEmpty. Operand 20512 states and 30324 transitions. [2022-01-10 07:20:05,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 07:20:05,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:05,954 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:05,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:06,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:06,161 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:06,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:06,162 INFO L85 PathProgramCache]: Analyzing trace with hash 988750408, now seen corresponding path program 1 times [2022-01-10 07:20:06,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:06,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848564372] [2022-01-10 07:20:06,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:06,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:06,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:06,163 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:06,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:20:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:06,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:20:06,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 07:20:06,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:06,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:06,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848564372] [2022-01-10 07:20:06,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848564372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:06,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:06,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:20:06,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645864694] [2022-01-10 07:20:06,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:06,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:20:06,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:06,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:20:06,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:20:06,443 INFO L87 Difference]: Start difference. First operand 20512 states and 30324 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 07:20:07,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:07,266 INFO L93 Difference]: Finished difference Result 40896 states and 60505 transitions. [2022-01-10 07:20:07,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:20:07,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 133 [2022-01-10 07:20:07,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:07,295 INFO L225 Difference]: With dead ends: 40896 [2022-01-10 07:20:07,295 INFO L226 Difference]: Without dead ends: 20512 [2022-01-10 07:20:07,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 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 07:20:07,314 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 108 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:07,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 225 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:20:07,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20512 states. [2022-01-10 07:20:08,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20512 to 20512. [2022-01-10 07:20:08,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20512 states, 20511 states have (on average 1.4689678708985423) internal successors, (30130), 20511 states have internal predecessors, (30130), 0 states have call successors, (0), 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 07:20:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20512 states to 20512 states and 30130 transitions. [2022-01-10 07:20:08,294 INFO L78 Accepts]: Start accepts. Automaton has 20512 states and 30130 transitions. Word has length 133 [2022-01-10 07:20:08,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:08,294 INFO L470 AbstractCegarLoop]: Abstraction has 20512 states and 30130 transitions. [2022-01-10 07:20:08,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 07:20:08,294 INFO L276 IsEmpty]: Start isEmpty. Operand 20512 states and 30130 transitions. [2022-01-10 07:20:08,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 07:20:08,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:08,298 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:08,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:08,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:08,508 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:08,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:08,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1651697669, now seen corresponding path program 1 times [2022-01-10 07:20:08,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:08,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547672743] [2022-01-10 07:20:08,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:08,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:08,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:08,511 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:08,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:20:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:08,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:08,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:09,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:20:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:10,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:10,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547672743] [2022-01-10 07:20:10,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547672743] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:20:10,386 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:20:10,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 07:20:10,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472512634] [2022-01-10 07:20:10,387 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:20:10,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:20:10,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:10,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:20:10,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:20:10,388 INFO L87 Difference]: Start difference. First operand 20512 states and 30130 transitions. Second operand has 16 states, 16 states have (on average 15.25) internal successors, (244), 15 states have internal predecessors, (244), 0 states have call successors, (0), 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 07:20:11,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:11,415 INFO L93 Difference]: Finished difference Result 41266 states and 60495 transitions. [2022-01-10 07:20:11,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 07:20:11,415 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.25) internal successors, (244), 15 states have internal predecessors, (244), 0 states have call successors, (0), 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 133 [2022-01-10 07:20:11,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:11,443 INFO L225 Difference]: With dead ends: 41266 [2022-01-10 07:20:11,443 INFO L226 Difference]: Without dead ends: 20912 [2022-01-10 07:20:11,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-01-10 07:20:11,465 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 148 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:11,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 1243 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 175 Invalid, 0 Unknown, 151 Unchecked, 0.1s Time] [2022-01-10 07:20:11,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20912 states. [2022-01-10 07:20:12,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20912 to 20524. [2022-01-10 07:20:12,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20524 states, 20523 states have (on average 1.4689860156897139) internal successors, (30148), 20523 states have internal predecessors, (30148), 0 states have call successors, (0), 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 07:20:12,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20524 states to 20524 states and 30148 transitions. [2022-01-10 07:20:12,307 INFO L78 Accepts]: Start accepts. Automaton has 20524 states and 30148 transitions. Word has length 133 [2022-01-10 07:20:12,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:12,307 INFO L470 AbstractCegarLoop]: Abstraction has 20524 states and 30148 transitions. [2022-01-10 07:20:12,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.25) internal successors, (244), 15 states have internal predecessors, (244), 0 states have call successors, (0), 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 07:20:12,308 INFO L276 IsEmpty]: Start isEmpty. Operand 20524 states and 30148 transitions. [2022-01-10 07:20:12,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 07:20:12,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:12,311 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:12,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:12,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:12,518 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:12,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:12,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1154314262, now seen corresponding path program 1 times [2022-01-10 07:20:12,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:12,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054214370] [2022-01-10 07:20:12,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:12,519 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:12,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:12,521 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:12,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:20:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:12,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:20:12,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:12,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:12,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:12,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054214370] [2022-01-10 07:20:12,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1054214370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:12,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:12,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:20:12,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131498185] [2022-01-10 07:20:12,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:12,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:20:12,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:12,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:20:12,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:20:12,758 INFO L87 Difference]: Start difference. First operand 20524 states and 30148 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 07:20:13,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:13,175 INFO L93 Difference]: Finished difference Result 30704 states and 45126 transitions. [2022-01-10 07:20:13,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:20:13,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-01-10 07:20:13,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:13,187 INFO L225 Difference]: With dead ends: 30704 [2022-01-10 07:20:13,187 INFO L226 Difference]: Without dead ends: 10350 [2022-01-10 07:20:13,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 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 07:20:13,202 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 73 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:13,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 387 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:20:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10350 states. [2022-01-10 07:20:13,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10350 to 10348. [2022-01-10 07:20:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10348 states, 10347 states have (on average 1.4568473953803034) internal successors, (15074), 10347 states have internal predecessors, (15074), 0 states have call successors, (0), 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 07:20:13,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10348 states to 10348 states and 15074 transitions. [2022-01-10 07:20:13,615 INFO L78 Accepts]: Start accepts. Automaton has 10348 states and 15074 transitions. Word has length 133 [2022-01-10 07:20:13,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:13,615 INFO L470 AbstractCegarLoop]: Abstraction has 10348 states and 15074 transitions. [2022-01-10 07:20:13,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 07:20:13,616 INFO L276 IsEmpty]: Start isEmpty. Operand 10348 states and 15074 transitions. [2022-01-10 07:20:13,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 07:20:13,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:13,617 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:13,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:13,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:13,819 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:13,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:13,820 INFO L85 PathProgramCache]: Analyzing trace with hash -318964535, now seen corresponding path program 1 times [2022-01-10 07:20:13,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:13,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576943056] [2022-01-10 07:20:13,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:13,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:13,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:13,821 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:13,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:20:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:13,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:20:13,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 07:20:14,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:14,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:14,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576943056] [2022-01-10 07:20:14,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576943056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:14,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:14,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:20:14,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424474652] [2022-01-10 07:20:14,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:14,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:20:14,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:14,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:20:14,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:20:14,116 INFO L87 Difference]: Start difference. First operand 10348 states and 15074 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 07:20:14,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:14,600 INFO L93 Difference]: Finished difference Result 20538 states and 29967 transitions. [2022-01-10 07:20:14,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:20:14,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 133 [2022-01-10 07:20:14,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:14,612 INFO L225 Difference]: With dead ends: 20538 [2022-01-10 07:20:14,613 INFO L226 Difference]: Without dead ends: 10348 [2022-01-10 07:20:14,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 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 07:20:14,621 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 92 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:14,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 177 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:20:14,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10348 states. [2022-01-10 07:20:15,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10348 to 10348. [2022-01-10 07:20:15,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10348 states, 10347 states have (on average 1.447376051029284) internal successors, (14976), 10347 states have internal predecessors, (14976), 0 states have call successors, (0), 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 07:20:15,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10348 states to 10348 states and 14976 transitions. [2022-01-10 07:20:15,053 INFO L78 Accepts]: Start accepts. Automaton has 10348 states and 14976 transitions. Word has length 133 [2022-01-10 07:20:15,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:15,053 INFO L470 AbstractCegarLoop]: Abstraction has 10348 states and 14976 transitions. [2022-01-10 07:20:15,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 07:20:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 10348 states and 14976 transitions. [2022-01-10 07:20:15,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 07:20:15,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:15,055 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:15,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-01-10 07:20:15,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:15,260 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:15,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:15,261 INFO L85 PathProgramCache]: Analyzing trace with hash -816462439, now seen corresponding path program 1 times [2022-01-10 07:20:15,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:15,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339965986] [2022-01-10 07:20:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:15,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:15,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:15,262 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:15,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:20:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:15,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:20:15,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 07:20:15,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:15,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:15,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339965986] [2022-01-10 07:20:15,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339965986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:15,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:15,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:20:15,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451300886] [2022-01-10 07:20:15,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:15,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:20:15,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:15,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:20:15,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:20:15,547 INFO L87 Difference]: Start difference. First operand 10348 states and 14976 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 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 07:20:15,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:15,999 INFO L93 Difference]: Finished difference Result 20544 states and 29780 transitions. [2022-01-10 07:20:15,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:20:16,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 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 133 [2022-01-10 07:20:16,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:16,013 INFO L225 Difference]: With dead ends: 20544 [2022-01-10 07:20:16,013 INFO L226 Difference]: Without dead ends: 10348 [2022-01-10 07:20:16,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 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 07:20:16,023 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 96 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:16,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 192 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:20:16,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10348 states. [2022-01-10 07:20:16,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10348 to 10348. [2022-01-10 07:20:16,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10348 states, 10347 states have (on average 1.4379047066782642) internal successors, (14878), 10347 states have internal predecessors, (14878), 0 states have call successors, (0), 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 07:20:16,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10348 states to 10348 states and 14878 transitions. [2022-01-10 07:20:16,459 INFO L78 Accepts]: Start accepts. Automaton has 10348 states and 14878 transitions. Word has length 133 [2022-01-10 07:20:16,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:16,459 INFO L470 AbstractCegarLoop]: Abstraction has 10348 states and 14878 transitions. [2022-01-10 07:20:16,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 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 07:20:16,459 INFO L276 IsEmpty]: Start isEmpty. Operand 10348 states and 14878 transitions. [2022-01-10 07:20:16,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 07:20:16,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:16,461 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:16,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:16,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:16,671 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:16,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:16,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1835410731, now seen corresponding path program 1 times [2022-01-10 07:20:16,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:16,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167634477] [2022-01-10 07:20:16,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:16,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:16,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:16,673 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:16,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 07:20:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:16,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:20:16,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 07:20:16,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:16,930 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:16,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167634477] [2022-01-10 07:20:16,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167634477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:16,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:16,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:20:16,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363396158] [2022-01-10 07:20:16,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:16,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:20:16,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:16,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:20:16,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:20:16,931 INFO L87 Difference]: Start difference. First operand 10348 states and 14878 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:17,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:17,399 INFO L93 Difference]: Finished difference Result 20550 states and 29593 transitions. [2022-01-10 07:20:17,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:20:17,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-01-10 07:20:17,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:17,412 INFO L225 Difference]: With dead ends: 20550 [2022-01-10 07:20:17,412 INFO L226 Difference]: Without dead ends: 10348 [2022-01-10 07:20:17,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 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 07:20:17,422 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 100 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:17,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 207 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:20:17,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10348 states. [2022-01-10 07:20:17,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10348 to 10348. [2022-01-10 07:20:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10348 states, 10347 states have (on average 1.4284333623272447) internal successors, (14780), 10347 states have internal predecessors, (14780), 0 states have call successors, (0), 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 07:20:17,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10348 states to 10348 states and 14780 transitions. [2022-01-10 07:20:17,865 INFO L78 Accepts]: Start accepts. Automaton has 10348 states and 14780 transitions. Word has length 133 [2022-01-10 07:20:17,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:17,865 INFO L470 AbstractCegarLoop]: Abstraction has 10348 states and 14780 transitions. [2022-01-10 07:20:17,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:20:17,866 INFO L276 IsEmpty]: Start isEmpty. Operand 10348 states and 14780 transitions. [2022-01-10 07:20:17,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 07:20:17,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:17,867 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:17,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:18,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:18,074 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:18,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:18,075 INFO L85 PathProgramCache]: Analyzing trace with hash -243181924, now seen corresponding path program 1 times [2022-01-10 07:20:18,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:18,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707921779] [2022-01-10 07:20:18,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:18,077 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:18,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:18,078 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:18,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 07:20:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:18,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:20:18,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 07:20:18,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:18,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:18,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707921779] [2022-01-10 07:20:18,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707921779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:18,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:18,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:20:18,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714297904] [2022-01-10 07:20:18,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:18,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:20:18,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:18,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:20:18,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:20:18,427 INFO L87 Difference]: Start difference. First operand 10348 states and 14780 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 07:20:18,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:18,890 INFO L93 Difference]: Finished difference Result 20562 states and 29413 transitions. [2022-01-10 07:20:18,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:20:18,890 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 133 [2022-01-10 07:20:18,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:18,904 INFO L225 Difference]: With dead ends: 20562 [2022-01-10 07:20:18,905 INFO L226 Difference]: Without dead ends: 10348 [2022-01-10 07:20:18,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 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 07:20:18,915 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 109 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:18,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 237 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:20:18,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10348 states. [2022-01-10 07:20:19,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10348 to 10348. [2022-01-10 07:20:19,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10348 states, 10347 states have (on average 1.418962017976225) internal successors, (14682), 10347 states have internal predecessors, (14682), 0 states have call successors, (0), 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 07:20:19,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10348 states to 10348 states and 14682 transitions. [2022-01-10 07:20:19,364 INFO L78 Accepts]: Start accepts. Automaton has 10348 states and 14682 transitions. Word has length 133 [2022-01-10 07:20:19,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:19,364 INFO L470 AbstractCegarLoop]: Abstraction has 10348 states and 14682 transitions. [2022-01-10 07:20:19,365 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 07:20:19,365 INFO L276 IsEmpty]: Start isEmpty. Operand 10348 states and 14682 transitions. [2022-01-10 07:20:19,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 07:20:19,366 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:19,366 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:19,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:19,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:19,573 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:19,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:19,574 INFO L85 PathProgramCache]: Analyzing trace with hash -549508059, now seen corresponding path program 1 times [2022-01-10 07:20:19,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:19,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868793210] [2022-01-10 07:20:19,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:19,574 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:19,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:19,575 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:19,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 07:20:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:19,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:20:19,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:19,848 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 07:20:19,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:19,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:19,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868793210] [2022-01-10 07:20:19,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868793210] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:19,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:19,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:20:19,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507994245] [2022-01-10 07:20:19,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:19,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:20:19,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:19,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:20:19,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:20:19,850 INFO L87 Difference]: Start difference. First operand 10348 states and 14682 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 07:20:20,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:20,364 INFO L93 Difference]: Finished difference Result 20526 states and 29179 transitions. [2022-01-10 07:20:20,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:20:20,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 133 [2022-01-10 07:20:20,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:20,377 INFO L225 Difference]: With dead ends: 20526 [2022-01-10 07:20:20,378 INFO L226 Difference]: Without dead ends: 10300 [2022-01-10 07:20:20,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 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 07:20:20,387 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 112 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:20,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 250 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:20:20,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10300 states. [2022-01-10 07:20:20,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10300 to 10300. [2022-01-10 07:20:20,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10300 states, 10299 states have (on average 1.410913680939897) internal successors, (14531), 10299 states have internal predecessors, (14531), 0 states have call successors, (0), 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 07:20:20,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10300 states to 10300 states and 14531 transitions. [2022-01-10 07:20:20,842 INFO L78 Accepts]: Start accepts. Automaton has 10300 states and 14531 transitions. Word has length 133 [2022-01-10 07:20:20,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:20,842 INFO L470 AbstractCegarLoop]: Abstraction has 10300 states and 14531 transitions. [2022-01-10 07:20:20,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 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 07:20:20,842 INFO L276 IsEmpty]: Start isEmpty. Operand 10300 states and 14531 transitions. [2022-01-10 07:20:20,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 07:20:20,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:20,844 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:20,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-01-10 07:20:21,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:21,052 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:21,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:21,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1080437813, now seen corresponding path program 1 times [2022-01-10 07:20:21,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:21,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929647899] [2022-01-10 07:20:21,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:21,053 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:21,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:21,054 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:21,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 07:20:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:21,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:21,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:22,257 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:22,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:20:22,563 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:22,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:22,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929647899] [2022-01-10 07:20:22,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929647899] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:20:22,563 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:20:22,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 07:20:22,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962510671] [2022-01-10 07:20:22,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:20:22,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:20:22,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:22,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:20:22,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:20:22,565 INFO L87 Difference]: Start difference. First operand 10300 states and 14531 transitions. Second operand has 16 states, 16 states have (on average 15.625) internal successors, (250), 15 states have internal predecessors, (250), 0 states have call successors, (0), 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 07:20:23,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:23,187 INFO L93 Difference]: Finished difference Result 20494 states and 28960 transitions. [2022-01-10 07:20:23,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 07:20:23,187 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.625) internal successors, (250), 15 states have internal predecessors, (250), 0 states have call successors, (0), 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 07:20:23,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:23,196 INFO L225 Difference]: With dead ends: 20494 [2022-01-10 07:20:23,196 INFO L226 Difference]: Without dead ends: 10316 [2022-01-10 07:20:23,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-01-10 07:20:23,203 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 198 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:23,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 1117 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 105 Unchecked, 0.0s Time] [2022-01-10 07:20:23,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10316 states. [2022-01-10 07:20:23,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10316 to 10312. [2022-01-10 07:20:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10312 states, 10311 states have (on average 1.411017360100863) internal successors, (14549), 10311 states have internal predecessors, (14549), 0 states have call successors, (0), 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 07:20:23,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10312 states to 10312 states and 14549 transitions. [2022-01-10 07:20:23,635 INFO L78 Accepts]: Start accepts. Automaton has 10312 states and 14549 transitions. Word has length 134 [2022-01-10 07:20:23,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:23,635 INFO L470 AbstractCegarLoop]: Abstraction has 10312 states and 14549 transitions. [2022-01-10 07:20:23,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.625) internal successors, (250), 15 states have internal predecessors, (250), 0 states have call successors, (0), 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 07:20:23,636 INFO L276 IsEmpty]: Start isEmpty. Operand 10312 states and 14549 transitions. [2022-01-10 07:20:23,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 07:20:23,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:23,637 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:23,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:23,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:23,844 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:23,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:23,845 INFO L85 PathProgramCache]: Analyzing trace with hash -35850187, now seen corresponding path program 1 times [2022-01-10 07:20:23,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:23,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542300425] [2022-01-10 07:20:23,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:23,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:23,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:23,846 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:23,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 07:20:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:23,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:20:23,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:24,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:24,101 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:24,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542300425] [2022-01-10 07:20:24,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542300425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:24,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:24,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:20:24,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970466616] [2022-01-10 07:20:24,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:24,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:20:24,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:24,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:20:24,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:20:24,102 INFO L87 Difference]: Start difference. First operand 10312 states and 14549 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 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 07:20:24,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:24,349 INFO L93 Difference]: Finished difference Result 15404 states and 21751 transitions. [2022-01-10 07:20:24,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:20:24,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 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 07:20:24,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:24,355 INFO L225 Difference]: With dead ends: 15404 [2022-01-10 07:20:24,355 INFO L226 Difference]: Without dead ends: 5226 [2022-01-10 07:20:24,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 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 07:20:24,362 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 63 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:24,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 369 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:20:24,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2022-01-10 07:20:24,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 5224. [2022-01-10 07:20:24,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5224 states, 5223 states have (on average 1.3974727168294083) internal successors, (7299), 5223 states have internal predecessors, (7299), 0 states have call successors, (0), 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 07:20:24,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5224 states to 5224 states and 7299 transitions. [2022-01-10 07:20:24,587 INFO L78 Accepts]: Start accepts. Automaton has 5224 states and 7299 transitions. Word has length 134 [2022-01-10 07:20:24,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:24,587 INFO L470 AbstractCegarLoop]: Abstraction has 5224 states and 7299 transitions. [2022-01-10 07:20:24,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 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 07:20:24,587 INFO L276 IsEmpty]: Start isEmpty. Operand 5224 states and 7299 transitions. [2022-01-10 07:20:24,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 07:20:24,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:24,588 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:24,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:24,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:24,796 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:24,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:24,797 INFO L85 PathProgramCache]: Analyzing trace with hash 926682985, now seen corresponding path program 1 times [2022-01-10 07:20:24,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:24,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139180857] [2022-01-10 07:20:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:24,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:24,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:24,810 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:24,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 07:20:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:24,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:20:24,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:25,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:25,211 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:25,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139180857] [2022-01-10 07:20:25,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139180857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:25,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:25,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:20:25,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482846988] [2022-01-10 07:20:25,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:25,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:20:25,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:25,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:20:25,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:20:25,213 INFO L87 Difference]: Start difference. First operand 5224 states and 7299 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 07:20:25,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:25,374 INFO L93 Difference]: Finished difference Result 7772 states and 10877 transitions. [2022-01-10 07:20:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:20:25,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2022-01-10 07:20:25,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:25,377 INFO L225 Difference]: With dead ends: 7772 [2022-01-10 07:20:25,377 INFO L226 Difference]: Without dead ends: 2682 [2022-01-10 07:20:25,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 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 07:20:25,384 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 57 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:25,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 353 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:20:25,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2022-01-10 07:20:25,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2680. [2022-01-10 07:20:25,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2679 states have (on average 1.3799925345278088) internal successors, (3697), 2679 states have internal predecessors, (3697), 0 states have call successors, (0), 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 07:20:25,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 3697 transitions. [2022-01-10 07:20:25,506 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 3697 transitions. Word has length 135 [2022-01-10 07:20:25,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:25,506 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 3697 transitions. [2022-01-10 07:20:25,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 07:20:25,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 3697 transitions. [2022-01-10 07:20:25,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 07:20:25,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:25,507 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:25,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:25,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:25,715 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:25,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:25,715 INFO L85 PathProgramCache]: Analyzing trace with hash 641276238, now seen corresponding path program 1 times [2022-01-10 07:20:25,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:25,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164638765] [2022-01-10 07:20:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:25,715 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:25,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:25,716 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:25,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 07:20:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:25,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:25,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:27,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:20:27,499 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:27,499 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:27,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164638765] [2022-01-10 07:20:27,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164638765] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:20:27,499 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:20:27,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 07:20:27,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712591929] [2022-01-10 07:20:27,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:20:27,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:20:27,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:27,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:20:27,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:20:27,500 INFO L87 Difference]: Start difference. First operand 2680 states and 3697 transitions. Second operand has 16 states, 16 states have (on average 16.0) internal successors, (256), 15 states have internal predecessors, (256), 0 states have call successors, (0), 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 07:20:27,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:27,661 INFO L93 Difference]: Finished difference Result 5240 states and 7274 transitions. [2022-01-10 07:20:27,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:20:27,662 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.0) internal successors, (256), 15 states have internal predecessors, (256), 0 states have call successors, (0), 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 135 [2022-01-10 07:20:27,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:27,665 INFO L225 Difference]: With dead ends: 5240 [2022-01-10 07:20:27,665 INFO L226 Difference]: Without dead ends: 2694 [2022-01-10 07:20:27,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-01-10 07:20:27,667 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 151 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:27,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 1335 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 109 Unchecked, 0.0s Time] [2022-01-10 07:20:27,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2022-01-10 07:20:27,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2692. [2022-01-10 07:20:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2691 states have (on average 1.380527684875511) internal successors, (3715), 2691 states have internal predecessors, (3715), 0 states have call successors, (0), 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 07:20:27,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 3715 transitions. [2022-01-10 07:20:27,785 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 3715 transitions. Word has length 135 [2022-01-10 07:20:27,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:27,785 INFO L470 AbstractCegarLoop]: Abstraction has 2692 states and 3715 transitions. [2022-01-10 07:20:27,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.0) internal successors, (256), 15 states have internal predecessors, (256), 0 states have call successors, (0), 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 07:20:27,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 3715 transitions. [2022-01-10 07:20:27,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 07:20:27,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:27,786 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:27,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:27,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:27,994 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:27,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:27,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2063023732, now seen corresponding path program 1 times [2022-01-10 07:20:27,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:27,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587470900] [2022-01-10 07:20:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:27,995 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:27,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:27,997 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:27,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-01-10 07:20:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:28,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:28,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:29,297 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:29,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:20:29,803 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:29,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:29,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587470900] [2022-01-10 07:20:29,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587470900] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:20:29,803 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:20:29,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 07:20:29,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312564796] [2022-01-10 07:20:29,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:20:29,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:20:29,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:29,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:20:29,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:20:29,804 INFO L87 Difference]: Start difference. First operand 2692 states and 3715 transitions. Second operand has 16 states, 16 states have (on average 16.375) internal successors, (262), 15 states have internal predecessors, (262), 0 states have call successors, (0), 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 07:20:30,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:30,022 INFO L93 Difference]: Finished difference Result 5254 states and 7296 transitions. [2022-01-10 07:20:30,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 07:20:30,023 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.375) internal successors, (262), 15 states have internal predecessors, (262), 0 states have call successors, (0), 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 07:20:30,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:30,025 INFO L225 Difference]: With dead ends: 5254 [2022-01-10 07:20:30,025 INFO L226 Difference]: Without dead ends: 2708 [2022-01-10 07:20:30,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-01-10 07:20:30,027 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 245 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:30,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1236 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 121 Unchecked, 0.0s Time] [2022-01-10 07:20:30,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2022-01-10 07:20:30,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2704. [2022-01-10 07:20:30,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2704 states, 2703 states have (on average 1.3810580836108028) internal successors, (3733), 2703 states have internal predecessors, (3733), 0 states have call successors, (0), 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 07:20:30,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 3733 transitions. [2022-01-10 07:20:30,203 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 3733 transitions. Word has length 136 [2022-01-10 07:20:30,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:30,203 INFO L470 AbstractCegarLoop]: Abstraction has 2704 states and 3733 transitions. [2022-01-10 07:20:30,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.375) internal successors, (262), 15 states have internal predecessors, (262), 0 states have call successors, (0), 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 07:20:30,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 3733 transitions. [2022-01-10 07:20:30,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 07:20:30,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:30,204 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:30,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:30,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:30,412 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:30,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:30,413 INFO L85 PathProgramCache]: Analyzing trace with hash 759356788, now seen corresponding path program 1 times [2022-01-10 07:20:30,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:30,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13082657] [2022-01-10 07:20:30,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:30,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:30,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:30,414 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:30,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-01-10 07:20:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:30,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:20:30,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:30,692 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:30,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:30,692 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:30,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13082657] [2022-01-10 07:20:30,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13082657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:30,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:30,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:20:30,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101912189] [2022-01-10 07:20:30,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:30,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:20:30,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:30,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:20:30,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:20:30,693 INFO L87 Difference]: Start difference. First operand 2704 states and 3733 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 07:20:30,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:30,767 INFO L93 Difference]: Finished difference Result 3980 states and 5511 transitions. [2022-01-10 07:20:30,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:20:30,768 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 07:20:30,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:30,769 INFO L225 Difference]: With dead ends: 3980 [2022-01-10 07:20:30,769 INFO L226 Difference]: Without dead ends: 1434 [2022-01-10 07:20:30,770 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 07:20:30,771 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 51 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:30,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 335 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:20:30,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2022-01-10 07:20:30,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1432. [2022-01-10 07:20:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 1.3577917540181692) internal successors, (1943), 1431 states have internal predecessors, (1943), 0 states have call successors, (0), 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 07:20:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1943 transitions. [2022-01-10 07:20:30,833 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1943 transitions. Word has length 136 [2022-01-10 07:20:30,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:30,834 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 1943 transitions. [2022-01-10 07:20:30,834 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 07:20:30,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1943 transitions. [2022-01-10 07:20:30,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-10 07:20:30,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:30,834 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:30,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:31,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:31,042 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:31,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:31,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1830960556, now seen corresponding path program 1 times [2022-01-10 07:20:31,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:31,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284119595] [2022-01-10 07:20:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:31,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:31,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:31,044 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:31,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-01-10 07:20:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:31,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:20:31,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:31,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:31,362 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:31,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284119595] [2022-01-10 07:20:31,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284119595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:31,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:31,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:20:31,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117906178] [2022-01-10 07:20:31,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:31,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:20:31,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:31,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:20:31,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:20:31,363 INFO L87 Difference]: Start difference. First operand 1432 states and 1943 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 07:20:31,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:31,419 INFO L93 Difference]: Finished difference Result 2072 states and 2827 transitions. [2022-01-10 07:20:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:20:31,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2022-01-10 07:20:31,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:31,420 INFO L225 Difference]: With dead ends: 2072 [2022-01-10 07:20:31,420 INFO L226 Difference]: Without dead ends: 798 [2022-01-10 07:20:31,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 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 07:20:31,421 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 45 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:31,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 319 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:20:31,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-01-10 07:20:31,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 796. [2022-01-10 07:20:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 795 states have (on average 1.3245283018867924) internal successors, (1053), 795 states have internal predecessors, (1053), 0 states have call successors, (0), 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 07:20:31,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1053 transitions. [2022-01-10 07:20:31,456 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1053 transitions. Word has length 137 [2022-01-10 07:20:31,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:31,456 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 1053 transitions. [2022-01-10 07:20:31,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 07:20:31,456 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1053 transitions. [2022-01-10 07:20:31,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-10 07:20:31,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:31,457 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:31,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:31,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:31,664 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:31,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash -90755527, now seen corresponding path program 1 times [2022-01-10 07:20:31,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:31,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626576002] [2022-01-10 07:20:31,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:31,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:31,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:31,666 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:31,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-01-10 07:20:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:31,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:31,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:32,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:20:33,416 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:20:33,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:33,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626576002] [2022-01-10 07:20:33,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626576002] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:20:33,416 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:20:33,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-01-10 07:20:33,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75598697] [2022-01-10 07:20:33,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:20:33,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 07:20:33,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:33,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 07:20:33,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-01-10 07:20:33,417 INFO L87 Difference]: Start difference. First operand 796 states and 1053 transitions. Second operand has 16 states, 16 states have (on average 16.75) internal successors, (268), 15 states have internal predecessors, (268), 0 states have call successors, (0), 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 07:20:33,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:33,566 INFO L93 Difference]: Finished difference Result 1458 states and 1970 transitions. [2022-01-10 07:20:33,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 07:20:33,566 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.75) internal successors, (268), 15 states have internal predecessors, (268), 0 states have call successors, (0), 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 137 [2022-01-10 07:20:33,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:33,567 INFO L225 Difference]: With dead ends: 1458 [2022-01-10 07:20:33,567 INFO L226 Difference]: Without dead ends: 820 [2022-01-10 07:20:33,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-01-10 07:20:33,568 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 203 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:33,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 1145 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 95 Unchecked, 0.0s Time] [2022-01-10 07:20:33,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2022-01-10 07:20:33,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 808. [2022-01-10 07:20:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 1.3271375464684014) internal successors, (1071), 807 states have internal predecessors, (1071), 0 states have call successors, (0), 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 07:20:33,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1071 transitions. [2022-01-10 07:20:33,603 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1071 transitions. Word has length 137 [2022-01-10 07:20:33,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:33,604 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 1071 transitions. [2022-01-10 07:20:33,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.75) internal successors, (268), 15 states have internal predecessors, (268), 0 states have call successors, (0), 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 07:20:33,604 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1071 transitions. [2022-01-10 07:20:33,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 07:20:33,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:33,604 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:33,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:33,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:33,812 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:33,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:33,813 INFO L85 PathProgramCache]: Analyzing trace with hash 928625739, now seen corresponding path program 1 times [2022-01-10 07:20:33,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:33,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624194769] [2022-01-10 07:20:33,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:33,814 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:33,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:33,815 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:33,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-01-10 07:20:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:33,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:33,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 07:20:35,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:35,501 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:35,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624194769] [2022-01-10 07:20:35,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624194769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:35,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:35,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 07:20:35,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283174644] [2022-01-10 07:20:35,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:35,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:20:35,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:35,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:20:35,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:35,503 INFO L87 Difference]: Start difference. First operand 808 states and 1071 transitions. Second operand has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 states have internal predecessors, (137), 0 states have call successors, (0), 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 07:20:35,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:35,840 INFO L93 Difference]: Finished difference Result 2600 states and 3540 transitions. [2022-01-10 07:20:35,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:20:35,840 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 states have internal predecessors, (137), 0 states have call successors, (0), 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 138 [2022-01-10 07:20:35,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:35,843 INFO L225 Difference]: With dead ends: 2600 [2022-01-10 07:20:35,843 INFO L226 Difference]: Without dead ends: 2386 [2022-01-10 07:20:35,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:35,844 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1079 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:35,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 1431 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:20:35,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2022-01-10 07:20:35,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 1260. [2022-01-10 07:20:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1259 states have (on average 1.3312152501985703) internal successors, (1676), 1259 states have internal predecessors, (1676), 0 states have call successors, (0), 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 07:20:35,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1676 transitions. [2022-01-10 07:20:35,917 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1676 transitions. Word has length 138 [2022-01-10 07:20:35,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:35,917 INFO L470 AbstractCegarLoop]: Abstraction has 1260 states and 1676 transitions. [2022-01-10 07:20:35,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 states have internal predecessors, (137), 0 states have call successors, (0), 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 07:20:35,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1676 transitions. [2022-01-10 07:20:35,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 07:20:35,918 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:35,918 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:35,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:36,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:36,125 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:36,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:36,126 INFO L85 PathProgramCache]: Analyzing trace with hash 548885771, now seen corresponding path program 1 times [2022-01-10 07:20:36,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:36,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229435803] [2022-01-10 07:20:36,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:36,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:36,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:36,128 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:36,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-01-10 07:20:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:36,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:36,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 07:20:37,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:37,687 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:37,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229435803] [2022-01-10 07:20:37,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229435803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:37,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:37,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 07:20:37,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395484822] [2022-01-10 07:20:37,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:37,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:20:37,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:37,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:20:37,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:37,688 INFO L87 Difference]: Start difference. First operand 1260 states and 1676 transitions. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 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 07:20:38,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:38,029 INFO L93 Difference]: Finished difference Result 2840 states and 3861 transitions. [2022-01-10 07:20:38,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:20:38,047 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 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 138 [2022-01-10 07:20:38,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:38,050 INFO L225 Difference]: With dead ends: 2840 [2022-01-10 07:20:38,050 INFO L226 Difference]: Without dead ends: 2626 [2022-01-10 07:20:38,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:38,052 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 1255 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:38,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1255 Valid, 1297 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:20:38,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2022-01-10 07:20:38,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 1482. [2022-01-10 07:20:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 1.3322079675894665) internal successors, (1973), 1481 states have internal predecessors, (1973), 0 states have call successors, (0), 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 07:20:38,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1973 transitions. [2022-01-10 07:20:38,140 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1973 transitions. Word has length 138 [2022-01-10 07:20:38,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:38,141 INFO L470 AbstractCegarLoop]: Abstraction has 1482 states and 1973 transitions. [2022-01-10 07:20:38,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 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 07:20:38,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1973 transitions. [2022-01-10 07:20:38,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 07:20:38,141 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:38,141 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:38,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:38,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:38,350 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:38,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:38,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1861029256, now seen corresponding path program 1 times [2022-01-10 07:20:38,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:38,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528874230] [2022-01-10 07:20:38,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:38,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:38,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:38,353 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:38,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-01-10 07:20:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:38,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:38,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:20:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 07:20:40,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:20:40,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:20:40,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528874230] [2022-01-10 07:20:40,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528874230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:20:40,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:20:40,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 07:20:40,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862214579] [2022-01-10 07:20:40,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:20:40,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 07:20:40,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:20:40,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 07:20:40,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:40,448 INFO L87 Difference]: Start difference. First operand 1482 states and 1973 transitions. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 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 07:20:40,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:20:40,793 INFO L93 Difference]: Finished difference Result 3056 states and 4150 transitions. [2022-01-10 07:20:40,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:20:40,793 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 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 138 [2022-01-10 07:20:40,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:20:40,796 INFO L225 Difference]: With dead ends: 3056 [2022-01-10 07:20:40,796 INFO L226 Difference]: Without dead ends: 2842 [2022-01-10 07:20:40,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:20:40,797 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 1795 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:20:40,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1795 Valid, 1239 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:20:40,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2022-01-10 07:20:40,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1698. [2022-01-10 07:20:40,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1697 states have (on average 1.332940483205657) internal successors, (2262), 1697 states have internal predecessors, (2262), 0 states have call successors, (0), 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 07:20:40,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2262 transitions. [2022-01-10 07:20:40,912 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2262 transitions. Word has length 138 [2022-01-10 07:20:40,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:20:40,913 INFO L470 AbstractCegarLoop]: Abstraction has 1698 states and 2262 transitions. [2022-01-10 07:20:40,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 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 07:20:40,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2262 transitions. [2022-01-10 07:20:40,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-10 07:20:40,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:20:40,913 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:20:40,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-01-10 07:20:41,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:20:41,122 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:20:41,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:20:41,122 INFO L85 PathProgramCache]: Analyzing trace with hash 582175083, now seen corresponding path program 1 times [2022-01-10 07:20:41,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:20:41,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613401866] [2022-01-10 07:20:41,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:20:41,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:20:41,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:20:41,124 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:20:41,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-01-10 07:20:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:20:41,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:20:41,247 INFO L286 TraceCheckSpWp]: Computing forward predicates...